{"id":2862,"date":"2026-07-20T15:09:47","date_gmt":"2026-07-20T13:09:47","guid":{"rendered":"https:\/\/gekkophotonics.com\/coating-composite-resins\/chemistry\/"},"modified":"2026-07-20T15:09:47","modified_gmt":"2026-07-20T13:09:47","slug":"chemistry","status":"publish","type":"page","link":"https:\/\/gekkophotonics.com\/de\/coating-composite-resins\/beschichtung-verbundharz-chemie-alkyd-acryl-silikon-inline-raman\/","title":{"rendered":"Coating &#038; Composite Resin Chemistry &#8211; Alkyd, Acrylic &#038; Silicone Inline Raman | Gekko Photonics"},"content":{"rendered":"<style>.elementor-2862 .elementor-element.elementor-element-086f5a2{margin-top:0px;margin-bottom:0px;padding:0px 0px 0px 0px;}.elementor-2862 .elementor-element.elementor-element-c22d6b6 > .elementor-element-populated{padding:0px 0px 0px 0px;}@media(min-width:768px){.elementor-2862 .elementor-element.elementor-element-c22d6b6{width:100%;}}<\/style>\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2862\" 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auto;width:46px;height:46px;border-radius:12px;background:var(--gk-blue-50);color:var(--gk-blue);display:flex;align-items:center;justify-content:center;font-size:22px}\n#gkms .how-point h4{font-size:18px;color:var(--gk-navy-deep);margin-bottom:5px}\n#gkms .how-point p{font-size:15px;color:var(--gk-slate);line-height:1.55}\n\n\/* ---- metric band ---- *\/\n#gkms .band{background:linear-gradient(120deg,#141F30 0%,var(--gk-navy-dark) 55%,#1B3048 100%);color:#fff;position:relative;overflow:hidden}\n#gkms .band::before{content:\"\";position:absolute;inset:0;pointer-events:none;\n  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);\n  background-size:56px 56px;mask-image:radial-gradient(70rem 40rem at 30% 0%,#000 0%,transparent 70%)}\n#gkms .band .wrap{position:relative}\n#gkms .band .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}\n@media(max-width:820px){#gkms .band 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.25s var(--ease);display:flex;flex-direction:column}\n#gkms .proof:hover{box-shadow:var(--sh-lg);transform:translateY(-4px);border-color:var(--gk-blue-100)}\n#gkms .proof .pph{aspect-ratio:16\/10;background:var(--g100);overflow:hidden;position:relative}\n#gkms .proof .pph img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}\n#gkms .proof:hover .pph img{transform:scale(1.045)}\n#gkms .proof .pph .ptag{position:absolute;left:14px;top:14px;font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:rgba(15,22,38,.72);backdrop-filter:blur(6px);padding:6px 11px;border-radius:var(--r-pill)}\n#gkms .proof .pbody{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}\n#gkms .proof h4{color:var(--gk-navy-deep);font-size:18px;line-height:1.25;margin:0 0 12px}\n#gkms .proof p{font-size:14px;color:var(--gk-slate);line-height:1.62}\n#gkms .proof p b{color:var(--gk-navy-deep);font-variant-numeric:tabular-nums}\n\n\/* ---- duel ---- *\/\n#gkms .duel{background:#fff;border:1px solid var(--g100);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md)}\n#gkms .duel-row{display:grid;grid-template-columns:1fr 1.15fr;align-items:stretch}\n#gkms .duel-row .mid{display:none}\n#gkms .duel-row .old,#gkms .duel-row .new{padding:18px 28px;font-size:15px;display:flex;align-items:center}\n#gkms .duel-row .old{color:var(--g500);background:var(--g50);border-bottom:1px solid var(--g100)}\n#gkms .duel-row .new{color:var(--gk-navy-deep);font-weight:600;background:var(--gk-blue-50);border-bottom:1px solid rgba(1,159,226,.14);border-left:2px solid var(--gk-blue)}\n#gkms .duel-row:last-child .old{border-bottom:none}\n#gkms .duel-row:last-child .new{border-bottom:none}\n#gkms .duel-row.duel-head .old,#gkms .duel-row.duel-head .new{font-weight:800;text-transform:uppercase;font-size:12px;letter-spacing:.1em;padding-top:20px;padding-bottom:20px}\n#gkms .duel-row.duel-head .old{background:var(--g100);color:var(--g500)}\n#gkms .duel-row.duel-head .new{background:var(--gk-navy-deep);color:#fff;border-bottom:none;border-left-color:var(--gk-navy-deep)}\n#gkms .duel .ck{color:var(--gk-blue);font-weight:800;margin-right:10px}\n#gkms .duel .xk{color:var(--g300);font-weight:800;margin-right:10px}\n@media(max-width:720px){#gkms .duel-row{grid-template-columns:1fr}#gkms .duel-row .old{border-bottom:1px dashed var(--g200)}}\n\n\/* ---- compliance ---- *\/\n#gkms .reg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}\n@media(max-width:820px){#gkms .reg-grid{grid-template-columns:1fr}}\n#gkms .reg{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);padding:24px}\n#gkms .reg .flag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.06em;padding:5px 11px;border-radius:6px;background:var(--gk-blue);color:#fff;text-transform:uppercase;margin-bottom:14px}\n#gkms .reg h4{font-size:17px;color:#fff;margin-bottom:6px}\n#gkms .reg p{font-size:14px;color:#C8D0DC;line-height:1.55}\n\n\/* ---- replace ---- *\/\n#gkms .repl{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}\n@media(max-width:720px){#gkms .repl{grid-template-columns:1fr}}\n#gkms .repl .item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--g100);border-radius:var(--r-md);padding:18px 20px}\n#gkms .repl .lag{flex:0 0 auto;font-size:12px;font-weight:800;color:var(--bad);background:#FDE9E9;padding:5px 10px;border-radius:6px;white-space:nowrap}\n#gkms .repl .m{font-weight:700;color:var(--gk-navy-deep);font-size:15px}\n#gkms .repl .s{font-size:13px;color:var(--gk-slate);margin-top:3px}\n\n\/* ---- product ---- *\/\n#gkms .product{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center}\n@media(max-width:900px){#gkms .product{grid-template-columns:1fr}}\n#gkms .prod-photo{background:radial-gradient(60% 55% at 50% 42%,#101321 0%,#010105 72%);border-radius:var(--r-xl);padding:36px 20px;box-shadow:var(--sh-lg);text-align:center;border:1px solid rgba(255,255,255,.06);position:relative;overflow:hidden}\n#gkms .prod-photo::after{content:\"\";position:absolute;left:10%;right:10%;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(1,159,226,.45),transparent)}\n#gkms .prod-photo img{margin:0 auto;max-height:460px;width:auto;position:relative}\n#gkms .spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--g100);margin-top:22px}\n#gkms .spec-table td{padding:12px 18px;font-size:14px;border-bottom:1px solid var(--g100)}\n#gkms .spec-table tr:last-child td{border-bottom:none}\n#gkms .spec-table td:first-child{font-weight:600;color:var(--gk-navy-deep);width:44%}\n#gkms .spec-table td:last-child{color:var(--gk-slate)}\n\n\/* ---- CTA ---- *\/\n#gkms .cta{background:linear-gradient(135deg,#019FE2 0%,#2B2E83 100%);color:#fff;border-radius:var(--r-xl);padding:64px 48px;text-align:center;position:relative;overflow:hidden}\n#gkms .cta::after{content:\"\";position:absolute;inset:0;background:radial-gradient(40rem 20rem at 80% 120%,rgba(243,201,105,.18),transparent 60%);pointer-events:none}\n#gkms .cta .h2{color:#fff;max-width:20ch;margin:14px auto 0;position:relative}\n#gkms .cta p{color:rgba(255,255,255,.92);max-width:58ch;margin:16px auto 0;position:relative;font-size:17px;line-height:1.6}\n#gkms .cta .hero-cta{justify-content:center;margin-top:30px;position:relative}\n#gkms .cta .sub{margin-top:18px;font-size:13px;color:rgba(255,255,255,.82);position:relative}\n\n\/* ---- workshop strip (secondary, demoted) ---- *\/\n#gkms .strip{background:var(--gk-off);border-top:1px solid var(--g100);border-bottom:1px solid var(--g100)}\n#gkms .strip-in{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;padding:34px 0}\n#gkms .strip .st-l{display:flex;align-items:center;gap:16px}\n#gkms .strip .st-ic{width:48px;height:48px;border-radius:12px;background:var(--gk-blue-50);color:var(--gk-blue);display:flex;align-items:center;justify-content:center;font-size:24px;flex:0 0 auto}\n#gkms .strip h4{font-size:18px;color:var(--gk-navy-deep)}\n#gkms .strip p{font-size:14px;color:var(--gk-slate);margin-top:2px}\n\n\/* ---- footer ---- *\/\n#gkms .foot{background:var(--black);color:#C8D0DC;padding:72px 0 30px}\n#gkms .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}\n@media(max-width:820px){#gkms .foot-grid{grid-template-columns:1fr 1fr}}\n#gkms .foot .flogo{height:42px;width:auto;filter:brightness(0) invert(1);margin-bottom:18px}\n#gkms .foot .ftag{font-size:14px;color:#8A93A0;line-height:1.6;max-width:34ch}\n#gkms .foot h5{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue);margin-bottom:16px}\n#gkms .foot a{display:block;font-size:13px;color:#C8D0DC;line-height:2}\n#gkms .foot a:hover{color:var(--gk-blue-400)}\n#gkms .foot .addr{font-size:13px;color:#8A93A0;line-height:1.7;margin-top:4px}\n#gkms .foot .fbottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#5E6676}\n#gkms .foot .fbottom .tagpl{color:var(--gk-blue);font-weight:700;letter-spacing:.14em;text-transform:uppercase}\n#gkms .mono-note{font-size:12px;color:var(--g400)}\n\n\/* ---- feasibility request form (custom, posts to gekko\/v1\/rsvp) ---- *\/\n#gkms .gkms-form{max-width:560px;margin:28px auto 0;text-align:left;position:relative}\n#gkms .gkms-form-q{font-weight:700;font-size:14px;color:#fff;margin:0 0 12px;text-align:center}\n#gkms .gkms-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}\n#gkms .gkms-opt{display:flex;align-items:center;justify-content:center;text-align:center;gap:8px;padding:13px 10px;border:1.5px solid rgba(255,255,255,.34);border-radius:var(--r-md);background:rgba(255,255,255,.08);color:#fff;font-family:var(--font);font-weight:600;font-size:14px;line-height:1.25;cursor:pointer;transition:.15s var(--ease)}\n#gkms .gkms-opt:hover{border-color:#fff;background:rgba(255,255,255,.16)}\n#gkms .gkms-opt.is-sel{background:#fff;color:var(--gk-navy-deep);border-color:#fff}\n#gkms .gkms-row{display:flex;gap:10px;flex-wrap:wrap}\n#gkms .gkms-email{flex:1 1 240px;min-width:0;padding:14px 15px;height:auto;line-height:1.4;border:1.5px solid rgba(255,255,255,.34);border-radius:var(--r-md);background:rgba(255,255,255,.96);color:var(--gk-navy-deep);font-family:var(--font);font-size:15px}\n#gkms .gkms-email::placeholder{color:var(--g400)}\n#gkms .gkms-email:focus{outline:none;border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.25)}\n#gkms .gkms-submit{flex:0 0 auto;box-shadow:0 6px 18px rgba(13,13,13,.18)}\n#gkms .gkms-hp{position:absolute!important;left:-9999px!important;top:auto;width:1px;height:1px;overflow:hidden;opacity:0}\n#gkms .gkms-consent{display:flex;align-items:flex-start;gap:10px;margin:14px 0 0;font-size:12.5px;color:rgba(255,255,255,.9);line-height:1.5;cursor:pointer;text-align:left}\n#gkms .gkms-consent-cb{flex:none;width:18px;height:18px;margin-top:1px;accent-color:#fff;cursor:pointer}\n#gkms .gkms-consent a{color:#fff;text-decoration:underline}\n#gkms .gkms-req{color:var(--gk-gold)}\n#gkms .gkms-msg{margin:12px 0 0;font-size:14px;min-height:1px;text-align:center;color:#fff}\n#gkms .gkms-msg.err{color:#FFDADA}\n#gkms .gkms-done{max-width:560px;margin:28px auto 0;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.30);border-radius:var(--r-lg);padding:24px;text-align:center;color:#fff;font-size:16px;font-weight:600;line-height:1.5}\n#gkms .cta-alt{margin-top:20px;position:relative}\n#gkms .cta-alt a{color:#fff;font-weight:600;font-size:14px;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px}\n#gkms .cta-alt a:hover{border-color:#fff}\n@media(max-width:560px){#gkms .gkms-choices{grid-template-columns:1fr}}\n\n\/* ---- inline line icons (replacing emoji) ---- *\/\n#gkms .ci svg{width:28px;height:28px;display:block;color:#DCE4EF}\n#gkms .cyc-step.on .ci svg{color:#fff}\n#gkms .how-point .hi svg{width:24px;height:24px;display:block}\n#gkms .strip .st-ic svg{width:26px;height:26px;display:block}\n#gkms .gkms-hint{margin:0 0 16px;font-size:13px;color:rgba(255,255,255,.88);line-height:1.55;text-align:center}\n#gkms .gkms-submit{transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}\n#gkms .gkms-submit.is-check{background:var(--ok);border-color:var(--ok);color:#fff;pointer-events:none}\n#gkms .gkms-submit svg{width:18px;height:18px;flex:0 0 auto;margin-right:2px}\n\n\n\/* ---- multi-page additions ---- *\/\n#gkms .subhero{position:relative;overflow:hidden;color:#fff;padding:120px 0 72px;\n  background:linear-gradient(115deg,#0F1626 0%,#192A3D 55%,#1F2A4A 100%)}\n#gkms .subhero .spectrum{position:absolute;inset:0;width:100%;height:100%;opacity:.20;pointer-events:none}\n#gkms .subhero .display{color:#fff;max-width:22ch;font-size:clamp(34px,4.4vw,54px)}\n#gkms .subhero .display .accent{color:var(--gk-blue-400)}\n#gkms .subhero .lead{color:#C8D0DC;max-width:62ch;margin-top:18px}\n#gkms .subhero .eyebrow{color:var(--gk-blue-400)}\n#gkms .subhero .eyebrow::before{background:var(--gk-blue-400)}\n#gkms .crumb{font-size:13px;color:#8A93A0;margin-bottom:18px}\n#gkms .crumb a{color:#C8D0DC}\n#gkms .crumb a:hover{color:#fff}\n#gkms .teaser-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}\n#gkms a.teaser{display:flex;flex-direction:column;background:#fff;border:1px solid var(--g100);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);transition:.2s var(--ease);color:inherit}\n#gkms a.teaser:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--gk-blue-100)}\n#gkms .teaser .tph{height:230px;overflow:hidden}\n#gkms .teaser .tph img{width:100%;height:100%;object-fit:cover}\n#gkms .teaser .tbody{padding:20px 22px 22px}\n#gkms .teaser .tk{font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--gk-blue);margin-bottom:8px}\n#gkms .teaser h3{font-size:18px;color:var(--gk-navy-deep);margin-bottom:6px}\n#gkms .teaser p{font-size:14px;color:var(--gk-slate);line-height:1.55}\n#gkms .teaser .tgo{margin-top:auto;padding-top:14px;font-size:13.5px;font-weight:700;color:var(--gk-blue)}\n@media(max-width:940px){#gkms .teaser-grid{grid-template-columns:1fr}}\n#gkms .pager{display:flex;justify-content:space-between;gap:14px;max-width:1200px;margin:0 auto;padding:34px 24px}\n#gkms .pager a{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--gk-navy-deep)}\n#gkms .pager a:hover{color:var(--gk-blue)}\n\/* ---- packshot rule: no frame, no background, full device visible ---- *\/\n#gkms .prod-photo{background:none;border:none;box-shadow:none;padding:0;border-radius:0;overflow:visible}\n#gkms .prod-photo::after{display:none}\n#gkms .prod-photo img{max-height:560px;max-width:100%;width:auto;object-fit:contain}\n#gkms .packshot-stage{background:none;border:0;box-shadow:none;padding:0;text-align:center}\n#gkms .packshot-stage img{max-width:100%;height:auto;max-height:520px;object-fit:contain;filter:drop-shadow(0 24px 42px rgba(25,42,61,.28))}\n#gkms .tabpanel.active:not(:has(img)){grid-template-columns:1fr!important;max-width:840px}\n#gkms .product:not(:has(img)){grid-template-columns:1fr!important;max-width:840px}\n#gkms .how-grid:not(:has(img)):not(:has(.cycle)){grid-template-columns:1fr!important;max-width:840px}\n\/* ---- click-to-load YouTube facade ---- *\/\n#gkms .vid-embed{position:relative;width:100%;aspect-ratio:16\/9;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);background:#0F1626}\n#gkms .vid-embed .yt-facade{display:block;width:100%;height:100%;margin:0;padding:0;border:0;cursor:pointer;background:#0F1626;position:relative}\n#gkms .vid-embed .yt-facade img{width:100%;height:100%;object-fit:cover;display:block}\n#gkms .vid-embed .yt-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}\n#gkms .vid-embed .yt-play svg{width:74px;height:auto;filter:drop-shadow(0 6px 16px rgba(0,0,0,.45));transition:transform .18s var(--ease)}\n#gkms .vid-embed .yt-facade:hover .yt-play svg,#gkms .vid-embed .yt-facade:focus-visible .yt-play svg{transform:scale(1.09)}\n#gkms .vid-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}\n\n<\/style>\n\n<div id=\"gkms\">\n<div id=\"gkms-progress\" style=\"position:fixed;top:0;left:0;height:3px;background:var(--gk-blue);width:0;z-index:200\"><\/div>\n<nav class=\"nav\">\n    <div class=\"nav-in\">\n      <a href=\"\/coating-composite-resins\/\"><img decoding=\"async\" class=\"logo\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/logo-full-3.png\" alt=\"Gekko Photonics\"><\/a>\n      <div class=\"nav-links\">\n      <a href=\"\/coating-composite-resins\/\">Home<\/a>\n      <a href=\"\/coating-composite-resins\/chemistry\/\" class=\"active\">Chemistry<\/a>\n      <a href=\"\/coating-composite-resins\/what-we-measure\/\">What we measure<\/a>\n      <a href=\"\/coating-composite-resins\/how-it-works\/\">How it works<\/a>\n      <a href=\"\/coating-composite-resins\/proof\/\">Proof<\/a>\n      <a href=\"\/coating-composite-resins\/compliance\/\">Compliance<\/a>\n      <a href=\"\/coating-composite-resins\/instrument\/\">Instrument<\/a>\n      <\/div>\n      <a class=\"btn btn-primary\" href=\"#contact\">Test on your samples<\/a>\n    <\/div>\n  <\/nav>\n<header class=\"subhero\">\n  <svg class=\"spectrum\" viewBox=\"0 0 1200 420\" preserveAspectRatio=\"none\" aria-hidden=\"true\">\n    <path d=\"M0,320 L90,312 L150,290 L195,195 L240,305 L315,292 L375,185 L420,305 L480,262 L540,135 L600,290 L660,276 L720,225 L780,296 L840,282 L900,205 L960,300 L1020,288 L1080,240 L1140,292 L1200,270\" fill=\"none\" stroke=\"#019FE2\" stroke-width=\"2\"><\/path>\n    <path d=\"M0,335 L90,328 L150,318 L195,245 L240,325 L315,312 L375,232 L420,322 L480,292 L540,196 L600,312 L660,300 L720,258 L780,318 L840,305 L900,242 L960,320 L1020,308 L1080,272 L1140,314 L1200,295\" fill=\"none\" stroke=\"#fff\" stroke-width=\"1\" stroke-dasharray=\"4 6\"><\/path>\n  <\/svg>\n  <div class=\"hero-in\" style=\"position:relative\">\n    <div class=\"crumb\"><a href=\"\/coating-composite-resins\/\">Coating &amp; composite resins<\/a> \/ Chemistry<\/div>\n    <span class=\"eyebrow\">Chemistry coverage<\/span>\n    <h1 class=\"display\" style=\"margin-top:16px\">Three resin chemistries. <span class=\"accent\">One measurement layer.<\/span><\/h1>\n    <p class=\"lead\">Alkyd, acrylic and vinyl-silicone composite resins - the coating and composite chemistries this mini-site covers, and what Spectrally reads inline, in the reactor itself with no sample drawn, in each of them.<\/p>\n  <\/div>\n<\/header>\n\n<!-- ===== 01 \u00b7 COVERAGE OVERVIEW ===== -->\n<section id=\"coverage\" class=\"ctx\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">01<\/span>\n      <span class=\"eyebrow\">Coverage<\/span>\n      <h2 class=\"h2\">One measurement layer, from esterification to the shipped resin.<\/h2>\n      <p class=\"lead\">Alkyd, acrylic and vinyl-silicone composite resins run different chemistries, but they share one blind spot: the reaction endpoint comes back from titration or chromatography 30 to 120 minutes after a sample is pulled - and the alkyd draw comes from a medium above 220 &deg;C. Spectrally X1 INLINE puts one Raman measurement layer across all three. An immersion probe reads the mixture where it reacts, a chemometric model per matrix turns the spectrum into numbers, and the reaction endpoint reaches your PLC or DCS in seconds - no sampling, no reactor stop.<\/p>\n    <\/div>\n    <div class=\"ctx-grid\">\n      <div class=\"ctx-item reveal\"><div class=\"k\">Tier A<\/div><div class=\"v\">Alkyd resins<\/div><p>Esterification of phthalic anhydride, fatty acids and glycerol above 220 &deg;C - the base for oil, alkyd and alkyd-acrylic paints. Acid value and viscosity read as the endpoint.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Tier A<\/div><div class=\"v\">Acrylic resins &amp; emulsions<\/div><p>Acrylate \/ methacrylate copolymers by emulsion or solution polymerization. Monomer conversion and copolymer ratio tracked live from the C=C band.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Tier A<\/div><div class=\"v\">Vinyl-silicone \/ composite<\/div><p>Pt addition-cure silicone-organic hybrids for adhesives, electronics coatings and high-temperature seals. Crosslinking followed as the vinyl and Si-H bands vanish.<\/p><\/div>\n      <div class=\"ctx-item reveal\"><div class=\"k\">Master variable<\/div><div class=\"v\">The reaction endpoint<\/div><p>Acid value and viscosity for alkyds, monomer conversion for acrylics - measured in the reactor instead of inferred after the batch.<\/p><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 02 \u00b7 ALKYD ===== -->\n<section id=\"alkyd\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">02<\/span>\n      <span class=\"eyebrow\">Alkyd &middot; Esterification<\/span>\n      <h2 class=\"h2\">Alkyd resins: the endpoint you read too late.<\/h2>\n      <p class=\"lead\">Ester polymers built by esterifying phthalic anhydride, fatty acids and glycerol in a reactor above 220 &deg;C - the base for oil, alkyd and alkyd-acrylic paints. The batch is defined by two numbers, acid value and viscosity, and both are the endpoint. Variable reaction kinetics from one drying-oil batch to the next make that endpoint hard to predict, and every overshoot is a solvent correction or an off-spec charge.<\/p>\n    <\/div>\n\n    <div class=\"tabpanels reveal\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">What Spectrally reads in alkyds<\/span>\n          <h3>From a 30-60 minute titration to a live acid-value curve.<\/h3>\n          <p>Acid value by titration to ISO 3682 takes 30 to 60 minutes and forces the crew to stop the reactor and draw a manual sample from a medium above 220 &deg;C. The reaction keeps building while the answer travels. The probe reads the acid value inline from the ratio of the acid and ester carbonyl (C=O) bands near 1710 and 1730 cm&#8315;&sup1;:<\/p>\n          <ul>\n            <li>Acid value, continuously through the cook - no reactor stop, no hot sampling<\/li>\n            <li>Viscosity build read from the same spectrum as the endpoint approaches<\/li>\n            <li>Hydroxyl value tracked through the process from the same acquisition<\/li>\n          <\/ul>\n          <p style=\"margin-top:16px\">Acid value has no single dedicated band, so a CNN model reads the whole spectrum - Gekko's advanced chemometrics, built on the carbonyl band ratio, not simple peak picking. The medium carries flammable white spirit and xylene, so the measurement runs in the ATEX zone on the 30 mW laser. Drying-oil alkyds fluoresce, where NIR struggles; the 1064 nm laser handles it. Coating reactors foul optical windows fast, so the self-cleaning probe retracts, rinses and returns between reads to hold the signal through a full campaign.<\/p>\n        <\/div>\n        <div class=\"tp-photo\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/probe-alkyd-reactor.jpg\" alt=\"Spectrally X1 PROBE mounted on an alkyd resin reactor\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"proof-grid\" style=\"margin-top:40px\">\n      <div class=\"proof reveal\">\n        <div class=\"pph\"><span class=\"ptag\">Alkyd reaction mixture<\/span><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/probe-resin-kettle.jpg\" alt=\"Spectrally X1 PROBE immersed in a resin reaction mixture\"><\/div>\n        <div class=\"pbody\">\n          <h4>Acid value during esterification<\/h4>\n          <p>A feasibility study at a resin producer (client anonymized) measured acid value inline with the Spectrally X1 and an immersion probe at 785 nm, no sampling. The CNN model tracked the laboratory acid value at <b>R 0.982-0.998<\/b> with a mean absolute error around <b>0.015 mg KOH\/g<\/b> - a value you steer the endpoint with, in real time versus a 30-60 min ISO 3682 titration.<\/p>\n        <\/div>\n      <\/div>\n      <div class=\"proof reveal\">\n        <div class=\"pph\"><span class=\"ptag\">Same spectrum, second value<\/span><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/probe-reactor-nozzle-1.jpg\" alt=\"Spectrally X1 PROBE at a reactor nozzle on a coatings line\"><\/div>\n        <div class=\"pbody\">\n          <h4>Viscosity across the full reaction<\/h4>\n          <p>Viscosity came off the same Raman spectrum as the acid value, the regression tracking the reference method at <b>R 0.988-0.998<\/b>. Two endpoint parameters from one acquisition - the reactor stops on measured data, not on a clock margin.<\/p>\n        <\/div>\n      <\/div>\n      <div class=\"proof reveal\">\n        <div class=\"pph\"><span class=\"ptag\">PF resins reference &middot; sibling chemistry<\/span><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/inline-front-panel-1.jpg\" alt=\"Spectrally X1 INLINE analyzer front panel at a coatings plant\"><\/div>\n        <div class=\"pbody\">\n          <h4>A closed endpoint loop, documented<\/h4>\n          <p>On phenol-formaldehyde resins - a sibling condensation chemistry running on the same Spectrally platform - a documented reference closed the endpoint loop inline: roughly <b>6.5 months<\/b> payback, about <b>180,000 EUR<\/b> saved a year, raw-material losses down <b>10%<\/b> and batch variability held under <b>1.5%<\/b>. Cited here as the PF resins reference point.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div style=\"margin-top:40px\">\n      <h3 style=\"font-size:20px;color:var(--gk-navy-deep);margin-bottom:16px\">What comes off the alkyd critical path<\/h3>\n      <div class=\"repl\">\n        <div class=\"item reveal\"><span class=\"lag\">30-60 min<\/span><div><div class=\"m\">Acid-value titration (ISO 3682)<\/div><div class=\"s\">Reactor stopped, manual draw from a medium above 220 &deg;C. Read inline instead; titration becomes a periodic reference.<\/div><\/div><\/div>\n        <div class=\"item reveal\"><span class=\"lag\">proxy only<\/span><div><div class=\"m\">Offline viscometry<\/div><div class=\"s\">An indirect read on reaction progress. The viscosity endpoint comes straight off the spectrum.<\/div><\/div><\/div>\n        <div class=\"item reveal\"><span class=\"lag\">fluorescence<\/span><div><div class=\"m\">NIR on drying-oil alkyds<\/div><div class=\"s\">Drying-oil fluorescence degrades the NIR signal. The 1064 nm Raman laser reads through it.<\/div><\/div><\/div>\n        <div class=\"item reveal\"><span class=\"lag\">calculated<\/span><div><div class=\"m\">Endpoint by time and temperature profile<\/div><div class=\"s\">A recipe schedule that never confirms the acid value actually in the reactor.<\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 03 \u00b7 ACRYLIC ===== -->\n<section id=\"acrylic\" class=\"ctx\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">03<\/span>\n      <span class=\"eyebrow\">Acrylic &middot; Emulsion &amp; solution<\/span>\n      <h2 class=\"h2\">Acrylic resins: conversion and copolymer ratio in one read.<\/h2>\n      <p class=\"lead\">Acrylate and methacrylate copolymers made by emulsion or solution polymerization in a water or organic reactor. The monomer ratio sets the glass transition and the coating properties; the residual monomer left behind is a VOC, odour and regulatory parameter. Both live in the same Raman spectrum - the C=C monomer band read against the polymer bands.<\/p>\n    <\/div>\n\n    <div class=\"tabpanels reveal\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">What Spectrally reads in acrylics<\/span>\n          <h3>The GC comes back after the reactor has moved on.<\/h3>\n          <p>Residual monomer by gas chromatography takes 30 to 60 minutes per sample, and the molecular-weight distribution by GPC \/ SEC takes 60 to 120. Both land after the polymerization has already progressed. The probe reads the conversion where it happens:<\/p>\n          <ul>\n            <li>Monomer conversion and residual monomer live from the disappearing C=C band - safety and quality in one number<\/li>\n            <li>Copolymer composition, the monomer ratio that fixes Tg, tracked through the batch<\/li>\n            <li>%Solids \/ NVM read continuously, not from a single refractometer point<\/li>\n            <li>Grade-to-grade emulsion consistency, provable batch to batch<\/li>\n          <\/ul>\n          <p style=\"margin-top:16px\">Residual monomer under Directive 2004\/42\/EC and the odour and VOC limits it drives becomes a live number instead of a post-batch GC result, and every acquisition adds to a time-stamped composition record for the environmental dossier.<\/p>\n        <\/div>\n        <div class=\"tp-photo reveal\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/gen-acrylic-reactor.jpg\" alt=\"Stainless steel emulsion polymerization reactor for acrylic resin at a coatings plant\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"duel reveal\" style=\"margin-top:40px\">\n      <div class=\"duel-row duel-head\"><div class=\"old\">Acrylic lab loop<\/div><div class=\"mid\"><\/div><div class=\"new\">Spectrally inline<\/div><\/div>\n      <div class=\"duel-row\"><div class=\"old\"><span class=\"xk\">&times;<\/span>Manual sample from the reactor for GC<\/div><div class=\"mid\">&rarr;<\/div><div class=\"new\"><span class=\"ck\">&check;<\/span>Probe reads the mixture continuously - no sampling<\/div><\/div>\n      <div class=\"duel-row\"><div class=\"old\"><span class=\"xk\">&times;<\/span>Residual monomer by GC: 30-60 min per sample<\/div><div class=\"mid\">&rarr;<\/div><div class=\"new\"><span class=\"ck\">&check;<\/span>Monomer conversion from the C=C band in seconds<\/div><\/div>\n      <div class=\"duel-row\"><div class=\"old\"><span class=\"xk\">&times;<\/span>Molecular weight by GPC \/ SEC: 60-120 min<\/div><div class=\"mid\">&rarr;<\/div><div class=\"new\"><span class=\"ck\">&check;<\/span>Copolymer profile tracked through the polymerization<\/div><\/div>\n      <div class=\"duel-row\"><div class=\"old\"><span class=\"xk\">&times;<\/span>Refractometry: total solids only, no composition<\/div><div class=\"mid\">&rarr;<\/div><div class=\"new\"><span class=\"ck\">&check;<\/span>%Solids plus conversion and ratio from one spectrum<\/div><\/div>\n      <div class=\"duel-row\"><div class=\"old\"><span class=\"xk\">&times;<\/span>Residual monomer confirmed after the batch ends<\/div><div class=\"mid\">&rarr;<\/div><div class=\"new\"><span class=\"ck\">&check;<\/span>VOC-relevant monomer visible while the batch can still be corrected<\/div><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 04 \u00b7 VINYL-SILICONE ===== -->\n<section id=\"silicone\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">04<\/span>\n      <span class=\"eyebrow\">Vinyl-silicone &middot; Composite<\/span>\n      <h2 class=\"h2\">Silicone-organic hybrids: crosslinking watched band by band.<\/h2>\n      <p class=\"lead\">Platinum addition-cure silicone-organic hybrids carrying vinyl groups, used for silicone adhesives, electronics coatings and high-temperature seals. The cure is a crosslinking reaction, and its progress is written directly into two Raman bands that fall as it runs.<\/p>\n    <\/div>\n\n    <div class=\"tabpanels reveal\">\n      <div class=\"tabpanel active\">\n        <div>\n          <span class=\"tp-tag\">What Spectrally reads in vinyl-silicone<\/span>\n          <h3>Crosslinking read as the vinyl and Si-H bands vanish.<\/h3>\n          <p>Cure today is judged by observational gel-time, by offline DSC at 30 to 90 minutes, or by rotational viscometry as a proxy - none of them a live read on the chemistry. Raman follows the reaction itself:<\/p>\n          <ul>\n            <li>Crosslinking tracked as the vinyl C=C band near 1600 cm&#8315;&sup1; disappears<\/li>\n            <li>Si-H consumption followed at the band near 2160 cm&#8315;&sup1;<\/li>\n            <li>The cure endpoint read from the spectrum instead of a stopwatch or an offline thermogram<\/li>\n          <\/ul>\n          <p style=\"margin-top:16px\">The same immersion probe and the same analyzer carry this chemistry - only the chemometric model changes, built and validated on your matrix during feasibility.<\/p>\n        <\/div>\n        <div class=\"tp-photo reveal\"><img decoding=\"async\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/gen-silicone-vessel.jpg\" alt=\"Stainless steel resin blending kettle for silicone-organic hybrid resins at a specialty coatings plant\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div style=\"margin-top:40px\">\n      <h3 style=\"font-size:20px;color:var(--gk-navy-deep);margin-bottom:16px\">What comes off the vinyl-silicone critical path<\/h3>\n      <div class=\"repl\">\n        <div class=\"item reveal\"><span class=\"lag\">observational<\/span><div><div class=\"m\">Gel-time<\/div><div class=\"s\">A watched, subjective endpoint. Replaced by a measured band-intensity read.<\/div><\/div><\/div>\n        <div class=\"item reveal\"><span class=\"lag\">30-90 min<\/span><div><div class=\"m\">DSC - cure<\/div><div class=\"s\">Offline thermal analysis on pulled samples. Crosslinking followed live in the reactor instead.<\/div><\/div><\/div>\n        <div class=\"item reveal\"><span class=\"lag\">proxy only<\/span><div><div class=\"m\">Rotational viscometry<\/div><div class=\"s\">An indirect cure proxy with no molecular detail. The vinyl and Si-H bands carry the chemistry directly.<\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- ===== 05 \u00b7 ONE PLATFORM ===== -->\n<section id=\"platform\" class=\"band\">\n  <div class=\"wrap\">\n    <div class=\"sec-head reveal\">\n      <span class=\"num\">05<\/span>\n      <span class=\"eyebrow no-line\" style=\"color:var(--gk-blue-400)\">One layer, one platform<\/span>\n      <h2 class=\"h2\" style=\"color:#fff;margin-top:12px\">Three chemistries. The same instrument, the same workflow.<\/h2>\n      <p class=\"lead\" style=\"color:#C8D0DC\">Every reactor above is measured by the same platform: a Spectrally X1 PROBE in the vessel, the Spectrally X1 INLINE analyzer up to 100 m away by fiber, and Spectrally OS turning spectra into process values over PROFIBUS and PROFINET. What changes per chemistry is the chemometric model - built and validated on your matrix during the feasibility study.<\/p>\n    <\/div>\n    <div class=\"reg-grid\">\n      <div class=\"reg reveal\"><span class=\"flag\">Hardware<\/span><h4>One probe family across resins<\/h4><p>316L immersion probe, IP67, ATEX \/ IECEx Zone 0 versions on the 30 mW laser, up to 16 bar, positioned for inline near-process measurement on the reactor. The self-cleaning module retracts and rinses the optics between reads, so fouling drying-oil, pigment and high-solids media stay readable.<\/p><\/div>\n      <div class=\"reg reveal\"><span class=\"flag\">Models<\/span><h4>A dedicated model per matrix<\/h4><p>AI \/ advanced chemometrics with a CNN core in Spectrally OS, trained on your recipes against laboratory reference values - the benchmark it is measured against is PLS \/ PCA. Calibration maintains itself from a reference in the probe, and models update without stopping the line.<\/p><\/div>\n      <div class=\"reg reveal\"><span class=\"flag\">Integration<\/span><h4>Values, not spectra, in the control room<\/h4><p>Acid value, conversion and ratios arrive as ordinary process tags over PROFIBUS \/ PROFINET. Every measurement is stored and exportable - CSV, PDF or raw spectra - as a per-batch record for the quality and environmental dossier.<\/p><\/div>\n    <\/div>\n    <div class=\"metrics\" id=\"gkms-metrics\" style=\"margin-top:56px\">\n      <div class=\"metric\"><div class=\"mk\">Chemistry families<\/div><div class=\"mv\" data-to=\"3\">0<\/div><p>Alkyd, acrylic and vinyl-silicone composite resins - one measurement layer.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Acid value fit<\/div><div class=\"mv\" data-to=\"0.998\" data-dec=\"3\" data-prefix=\"R \">0<\/div><p>CNN model vs laboratory reference, R 0.982 to 0.998, MAE about 0.015 mg KOH\/g.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Acquisition<\/div><div class=\"mv\" data-to=\"5\" data-suffix=\"s\">0<span class=\"u\">s<\/span><\/div><p>A single Raman acquisition takes from 5 seconds.<\/p><\/div>\n      <div class=\"metric\"><div class=\"mk\">Titration lag removed<\/div><div class=\"mv\" data-to=\"60\" data-suffix=\"min\">0<span class=\"u\">min<\/span><\/div><p>ISO 3682 acid-value titration at the top of its range - off the critical path.<\/p><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<div class=\"pager\">\n    <span><\/span>\n    <span><a href=\"\/coating-composite-resins\/what-we-measure\/\">What we measure &rarr;<\/a><\/span>\n  <\/div>\n<section id=\"contact\">\n    <div class=\"wrap\">\n      <div class=\"cta reveal\">\n        <span class=\"eyebrow no-line\" style=\"color:#fff;justify-content:center\">Your next step<\/span>\n        <h2 class=\"h2\">Start with your own resin chemistry.<\/h2>\n        <p>Send representative samples from your alkyd, acrylic or vinyl-silicone process. We build and validate a chemometric model on your matrix in the Gekko lab and report exactly what inline Raman reads on your line - acid value, viscosity, monomer conversion - before any hardware decision.<\/p>\n        <form class=\"gkms-form\" data-region=\"m4-coating-composite-resins\" data-region-label=\"Microsite M4 - Coating and composite resins\" data-source=\"microsite-m4-chemistry\" novalidate>\n          <div class=\"gkms-form-q\">What would you like to do?<\/div>\n          <div class=\"gkms-choices\" role=\"radiogroup\" aria-label=\"What would you like to do?\">\n            <button type=\"button\" class=\"gkms-opt is-sel\" data-val=\"feasibility\" role=\"radio\" aria-checked=\"true\">Feasibility study<\/button>\n            <button type=\"button\" class=\"gkms-opt\" data-val=\"workshop\" role=\"radio\" aria-checked=\"false\">Workshop seat<\/button>\n            <button type=\"button\" class=\"gkms-opt\" data-val=\"info\" role=\"radio\" aria-checked=\"false\">Send info<\/button>\n          <\/div>\n          <p class=\"gkms-hint\" id=\"gkms-hint\"><\/p>\n          <div class=\"gkms-row\">\n            <input type=\"email\" class=\"gkms-email\" name=\"email\" required placeholder=\"you@company.com\" autocomplete=\"email\" aria-label=\"Your work email\">\n            <button type=\"submit\" class=\"btn btn-light gkms-submit\">Send request<\/button>\n          <\/div>\n          <input type=\"text\" class=\"gkms-hp\" name=\"company_hp\" tabindex=\"-1\" autocomplete=\"off\" aria-hidden=\"true\">\n          <label class=\"gkms-consent\"><input type=\"checkbox\" class=\"gkms-consent-cb\" name=\"consent\" required><span>By submitting this form, I confirm I have read and understood the <a href=\"https:\/\/gekkophotonics.com\/en\/privacy-policy\/\" target=\"_blank\" rel=\"noopener\">privacy policy<\/a> <span class=\"gkms-req\">*<\/span><\/span><\/label>\n          <p class=\"gkms-msg\" aria-live=\"polite\"><\/p>\n        <\/form>\n        <p class=\"cta-alt\"><a href=\"https:\/\/gekkophotonics.com\/products\/spectrally-inline\/\">Explore Spectrally X1 INLINE -&gt;<\/a><\/p>\n      <\/div>\n    <\/div>\n  <\/section>\n<footer class=\"foot\">\n    <div class=\"wrap\">\n      <div class=\"foot-grid\">\n        <div>\n          <img decoding=\"async\" class=\"flogo\" src=\"https:\/\/gekkophotonics.com\/wp-content\/uploads\/2026\/07\/logo-full-3.png\" alt=\"Gekko Photonics\">\n          <p class=\"ftag\">Engineering-Driven Analytics. Real-time process composition with inline Raman spectroscopy.<\/p>\n        <\/div>\n        <div>\n          <h5>Platform<\/h5>\n          <a href=\"https:\/\/gekkophotonics.com\/products\/spectrally-inline\/\">Spectrally X1 INLINE<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">Spectrally X1 PROBE<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">Spectrally OS<\/a>\n        <\/div>\n        <div>\n          <h5>This mini-site<\/h5>\n          <a href=\"\/coating-composite-resins\/chemistry\/\">Chemistry<\/a>\n          <a href=\"\/coating-composite-resins\/what-we-measure\/\">What we measure<\/a>\n          <a href=\"\/coating-composite-resins\/how-it-works\/\">How it works<\/a>\n          <a href=\"\/coating-composite-resins\/proof\/\">Proof<\/a>\n          <a href=\"\/coating-composite-resins\/compliance\/\">Compliance<\/a>\n          <a href=\"\/coating-composite-resins\/instrument\/\">Instrument<\/a>\n        <\/div>\n        <div>\n          <h5>Contact<\/h5>\n          <a href=\"mailto:contact@gekkophotonics.com\">contact@gekkophotonics.com<\/a>\n          <a href=\"https:\/\/gekkophotonics.com\/\">gekkophotonics.com<\/a>\n          <div class=\"addr\">NextCorps, 260 E. 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