{"id":10323,"date":"2026-06-28T00:00:17","date_gmt":"2026-06-28T00:00:17","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10323"},"modified":"2026-06-28T12:06:45","modified_gmt":"2026-06-28T12:06:45","slug":"release-coating-photoinitiator","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/nl\/release-coating-photoinitiator\/","title":{"rendered":"Photoinitiator for UV Release Coatings: How to Choose 184, 1173, and TPO-L"},"content":{"rendered":"<p><strong>Snel antwoord:<\/strong> buyers choosing a <strong>photoinitiator for UV release coatings<\/strong> usually get a better shortlist when they separate three real-world needs early: a straightforward <strong>365 nm benchmark for clear low-to-medium film builds<\/strong>, a <strong>liquid low-yellowing route for acrylic varnish-style systems<\/strong>, or a <strong>broader-absorption liquid route for harder cure windows and more LED-leaning production<\/strong>. In Longchang&#8217;s current product set, <a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-184-cas-947-19-3\/\">Fotoinitiator 184<\/a> is the practical benchmark when the coating is clear, relatively easy to cure, and appearance-sensitive. <a href=\"https:\/\/longchangchemical.com\/nl\/product\/irgacure-1173-cas-7473-98-5\/\">Fotoinitiator 1173<\/a> moves up when the buyer wants a <strong>multifunctional liquid<\/strong> photoinitiator with strong fit for <strong>acrylic UV-curable varnishes on paper, metal, and plastic surfaces<\/strong> and only slight yellowing. <a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">Fotoinitiator TPO-L<\/a> deserves earlier attention when the line needs a <strong>liquid low-odor, low-yellowing route<\/strong> with a relatively wider absorption window and better tolerance for harder cure conditions.<\/p>\n<p>This page is intentionally narrower than a broad coatings article. The buyer question here is more specific: <strong>which photoinitiator route makes sense when the cured layer is a release coating on a label, liner, tape, or other converting web, and the commercial target is clean cure, stable converting behavior, and acceptable appearance on a fast production line?<\/strong><\/p>\n<h2>Why UV release-coating selection is different from generic UV coating selection<\/h2>\n<p>General industry references commonly frame UV release coatings around <strong>labels, tapes, hygiene materials, and specialty liners<\/strong>, where buyers care about <strong>high-speed converting, reliable cure, durable anchorage, and consistent release behavior<\/strong> rather than cure speed alone. In practice, many release-coating programs are also <strong>clear and relatively thin<\/strong>, which changes the first screening logic compared with heavier pigmented topcoats.<\/p>\n<p>That means the first technical questions are usually:<\/p>\n<ul>\n<li>Is the coating mostly a <strong>clear thin film<\/strong>, or is the cure window less forgiving than it looks?<\/li>\n<li>Is the line built around a familiar <strong>365 nm<\/strong> workflow, or does it also need better flexibility for a broader UV or UV-LED window?<\/li>\n<li>Is the main concern <strong>yellowing and appearance cleanliness<\/strong>, or is the real bottleneck cure completeness on a fast web line?<\/li>\n<li>Does the formulator want a simple benchmark solid, or a <strong>liquid route<\/strong> that is easier to blend into varnish-style systems?<\/li>\n<li>Will the release-coating project sit close to adjacent converting programs such as <a href=\"https:\/\/longchangchemical.com\/nl\/pressure-sensitive-label-photoinitiator\/\">pressure-sensitive labels<\/a> or <a href=\"https:\/\/longchangchemical.com\/nl\/label-ink-photoinitiator\/\">label inks<\/a>, where process alignment also matters?<\/li>\n<\/ul>\n<h2>Shortlist table: when 184, 1173, or TPO-L usually makes sense<\/h2>\n<table>\n<thead>\n<tr>\n<th>Fotoinitiator<\/th>\n<th>Beste first fit<\/th>\n<th>Waarom kopers het op hun shortlist zetten<\/th>\n<th>Main caution<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>184<\/td>\n<td>Clear or light release coatings, low to medium film build, straightforward 365 nm screening<\/td>\n<td>Longchang positions 184 for paper varnishes, coatings, labels, and printing-related systems, and highlights strong efficiency around 365 nm plus low-yellowing behavior and good fit for low to medium-thickness coatings.<\/td>\n<td>It is not the strongest first answer when the release coating becomes harder to cure or the line needs a broader liquid route.<\/td>\n<\/tr>\n<tr>\n<td>1173<\/td>\n<td>Acrylic UV-curable varnish-style release coatings on paper, metal, or plastic surfaces<\/td>\n<td>Longchang positions 1173 as a multifunctional liquid photoinitiator for acrylic UV-curable varnishes on paper, metal, and plastic surfaces, with only slight yellowing and easy blending with other photoinitiators and prepolymers.<\/td>\n<td>It is still a Type I liquid benchmark, so if the cure window is unusually demanding, a broader-absorption option may screen better.<\/td>\n<\/tr>\n<tr>\n<td>TPO-L<\/td>\n<td>Low-yellowing liquid release coatings where broader absorption, low odor, and more forgiving cure behavior matter<\/td>\n<td>Longchang positions TPO-L as a liquid photoinitiator for low-yellowing and low-odor systems, with a relatively wide absorption range, clear-varnish relevance, and practical fit for pressure-sensitive-adhesive-adjacent formulation work.<\/td>\n<td>Not every routine clear release coating needs a more advanced liquid route if a simpler benchmark already cures cleanly.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When 184 is the better fit<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-184-cas-947-19-3\/\">Fotoinitiator 184<\/a> still deserves the first sample slot in many release-coating projects because the basic commercial target is often a <strong>clear, clean, relatively thin cured film<\/strong>. Longchang directly places 184 in <strong>paper varnishes<\/strong>, coatings, and printing-ink systems tied to <strong>packaging materials, labels, and printed products<\/strong>. The product page also highlights very strong absorption efficiency around <strong>365 nm<\/strong> and practical fit for <strong>low to medium-thickness coatings, inks, and glues<\/strong>.<\/p>\n<p>That makes 184 the sensible first route when:<\/p>\n<ul>\n<li>the release coating is clear or only lightly tinted<\/li>\n<li>the web line is built around a familiar 365 nm curing window<\/li>\n<li>low yellowing matters because the coated liner or label construction must stay visually clean<\/li>\n<li>the buyer wants a benchmark before testing more specialized liquid routes<\/li>\n<li>the practical question is basic cure completeness, not an unusually difficult exposure window<\/li>\n<\/ul>\n<p>For many converters, 184 is the fastest way to establish whether the release-coating project is actually simple or only looks simple on paper.<\/p>\n<h2>When 1173 is the better fit<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/nl\/product\/irgacure-1173-cas-7473-98-5\/\">Fotoinitiator 1173<\/a> becomes more attractive when the release-coating formulation behaves like an <strong>acrylic UV-curable varnish system<\/strong> rather than just a generic coating trial. Longchang explicitly positions 1173 as a <strong>multifunctional liquid photoinitiator<\/strong> that can be used for <strong>acrylic UV-curable varnishes on paper, metal, and plastic surfaces<\/strong>. The company page also states that it is especially recommended for UV coatings that require only <strong>slight yellowing<\/strong> even under longer sunlight exposure and that it has <strong>good compatibility<\/strong> and can be <strong>easily mixed<\/strong> with other photoinitiators and prepolymers.<\/p>\n<p>That makes 1173 a strong first-screen route when:<\/p>\n<ul>\n<li>the release coating sits on paper, film, or other converting surfaces where appearance stability still matters<\/li>\n<li>the team wants a liquid route that is easier to formulate than a solid benchmark<\/li>\n<li>the coating package is closer to a varnish-style acrylic system than to a difficult pigmented topcoat<\/li>\n<li>the buyer wants flexibility to fine-tune a blend instead of locking into one single initiator path immediately<\/li>\n<\/ul>\n<p>In short, 1173 is often the cleaner commercial answer when the buyer wants a <strong>liquid low-yellowing acrylic-varnish route<\/strong> without jumping immediately to a more specialized broader-absorption option.<\/p>\n<h2>When TPO-L is the better fit<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">Fotoinitiator TPO-L<\/a> deserves earlier attention when the release-coating job needs a little more process margin. Longchang directly describes TPO-L as a <strong>liquid photoinitiator<\/strong> suitable for <strong>low-yellowing and low-odor systems<\/strong>. The same page also states that TPO-L has a <strong>relatively wide absorption range<\/strong> and supports curing in more demanding systems, while still fitting coatings, inks, <strong>clear varnishes<\/strong>, and <strong>pressure-sensitive adhesives<\/strong>.<\/p>\n<p>That combination is useful in release-coating work when:<\/p>\n<ul>\n<li>the line is moving toward a broader UV window or partial UV-LED logic<\/li>\n<li>the buyer wants a liquid route but expects a more forgiving cure response than a simple benchmark may provide<\/li>\n<li>low odor and low yellowing still matter on appearance-sensitive converting products<\/li>\n<li>the release-coating project sits close to PSA-label or adhesive-adjacent development work<\/li>\n<\/ul>\n<p>TPO-L should not replace disciplined screening, but it often belongs high on the shortlist when the release-coating line has less room for cure-window mistakes.<\/p>\n<h2>How buyers should choose between them<\/h2>\n<ol>\n<li><strong>Start with film difficulty, not just the product label.<\/strong> If the release coating is truly a clear thin film on a stable 365 nm line, 184 often belongs first. If it behaves more like an acrylic varnish formulation, 1173 becomes more attractive. If the cure window looks less forgiving, TPO-L deserves earlier review.<\/li>\n<li><strong>Keep appearance and formulation handling visible.<\/strong> 1173 and TPO-L both help when the buyer wants liquid handling and low-yellowing positioning, but 1173 is the cleaner acrylic-varnish route while TPO-L is the broader-absorption route.<\/li>\n<li><strong>Match the real production window.<\/strong> A routine conventional-UV web and a broader UV or UV-LED-leaning line should not automatically get the same first shortlist.<\/li>\n<li><strong>Keep the first sample round tight.<\/strong> For most release-coating programs, three well-matched routes tell you more than a long undisciplined list.<\/li>\n<\/ol>\n<h2>Recommended Longchang product and article paths<\/h2>\n<ul>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-184-cas-947-19-3\/\">Fotoinitiator 184<\/a> for straightforward clear low-to-medium film release-coating screening<\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/product\/irgacure-1173-cas-7473-98-5\/\">Fotoinitiator 1173<\/a> for liquid acrylic-varnish-style release coatings on paper, metal, and plastic surfaces<\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">Fotoinitiator TPO-L<\/a> for low-yellowing, low-odor release coatings needing a broader liquid cure window<\/li>\n<\/ul>\n<p>Related pages for adjacent converting decisions:<\/p>\n<ul>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/pressure-sensitive-label-photoinitiator\/\">Photoinitiator for Pressure-Sensitive Labels<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/label-ink-photoinitiator\/\">Photoinitiator for Label Inks<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/nl\/uv-overprint-varnish-photoinitiator\/\">Photoinitiator for UV Overprint Varnish<\/a><\/li>\n<\/ul>\n<h2>FAQ<\/h2>\n<h3>Which photoinitiator is the best first benchmark for UV release coatings?<\/h3>\n<p>In Longchang&#8217;s current product set, 184 is often the best first benchmark for clear, relatively easy-to-cure release coatings on a 365 nm line. 1173 is stronger when the system behaves like an acrylic UV-curable varnish and the formulator wants a liquid route. TPO-L moves up when the cure window is less forgiving and broader liquid-route flexibility matters.<\/p>\n<h3>Why does a release coating need a different shortlist from a generic UV coating?<\/h3>\n<p>Because release coatings are commonly screened on fast converting lines where cure completeness, anchorage, consistent release behavior, and appearance cleanliness all matter at the same time. Many are also clear thin films, which changes the first-screen logic.<\/p>\n<h3>When should a buyer choose 1173 instead of 184?<\/h3>\n<p>Choose 1173 earlier when the formulation is closer to an acrylic UV-curable varnish on paper, metal, or plastic, and when low-yellowing liquid handling and blend flexibility matter more than using a solid 365 nm benchmark first.<\/p>\n<h3>When should TPO-L move ahead of 1173?<\/h3>\n<p>TPO-L should move ahead when the buyer expects a broader cure window, wants low odor and low yellowing, and needs a liquid route that can handle a more demanding process window than a basic acrylic-varnish benchmark.<\/p>\n<h2>Next step<\/h2>\n<p>If your release-coating project is mainly a clear thin-film job on a stable 365 nm line, start with <a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-184-cas-947-19-3\/\">184<\/a>. If the formulation behaves more like an acrylic varnish and blend convenience matters, screen <a href=\"https:\/\/longchangchemical.com\/nl\/product\/irgacure-1173-cas-7473-98-5\/\">1173<\/a> early. If the line needs more cure-window flexibility with low yellowing and liquid handling, move <a href=\"https:\/\/longchangchemical.com\/nl\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">TPO-L<\/a> higher from the start.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical B2B guide to choosing a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear thin-film cure, release-line appearance, formulation handling, and UV versus LED fit.<\/p>","protected":false},"author":6,"featured_media":10324,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L<\/title>\n<meta name=\"description\" content=\"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/nl\/release-coating-photoinitiator\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L\" \/>\n<meta property=\"og:description\" content=\"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangchemical.com\/nl\/release-coating-photoinitiator\/\" \/>\n<meta property=\"og:site_name\" content=\"Longchang Chemical\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-28T00:00:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-28T12:06:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"marketing@longchang Group\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/\"},\"author\":{\"name\":\"marketing@longchang Group\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/03647a4ce07fdc0e453f27a2b96ccce5\"},\"headline\":\"Photoinitiator for UV Release Coatings: How to Choose 184, 1173, and TPO-L\",\"datePublished\":\"2026-06-28T00:00:17+00:00\",\"dateModified\":\"2026-06-28T12:06:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/\"},\"wordCount\":1517,\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg\",\"articleSection\":[\"Uncategorized\"],\"inLanguage\":\"nl-NL\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/\",\"url\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/\",\"name\":\"Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg\",\"datePublished\":\"2026-06-28T00:00:17+00:00\",\"dateModified\":\"2026-06-28T12:06:45+00:00\",\"description\":\"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.\",\"breadcrumb\":{\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#breadcrumb\"},\"inLanguage\":\"nl-NL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"nl-NL\",\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage\",\"url\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg\",\"contentUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg\",\"width\":1024,\"height\":576},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/longchangchemical.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Photoinitiator for UV Release Coatings: How to Choose 184, 1173, and TPO-L\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/longchangchemical.com\/#website\",\"url\":\"https:\/\/longchangchemical.com\/\",\"name\":\"Longchang Chemical\",\"description\":\"China chemical manufacturer \uff06 supplier\",\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/longchangchemical.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"nl-NL\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/longchangchemical.com\/#organization\",\"name\":\"Longchang Chemical\",\"url\":\"https:\/\/longchangchemical.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"nl-NL\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"contentUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"width\":512,\"height\":512,\"caption\":\"Longchang Chemical\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/03647a4ce07fdc0e453f27a2b96ccce5\",\"name\":\"marketing@longchang Group\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"nl-NL\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a6a906641262cdfd34e337a3fa18594a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a6a906641262cdfd34e337a3fa18594a?s=96&d=mm&r=g\",\"caption\":\"marketing@longchang Group\"},\"url\":\"https:\/\/longchangchemical.com\/nl\/author\/marketinglongchang-group\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L","description":"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/longchangchemical.com\/nl\/release-coating-photoinitiator\/","og_locale":"nl_NL","og_type":"article","og_title":"Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L","og_description":"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.","og_url":"https:\/\/longchangchemical.com\/nl\/release-coating-photoinitiator\/","og_site_name":"Longchang Chemical","article_published_time":"2026-06-28T00:00:17+00:00","article_modified_time":"2026-06-28T12:06:45+00:00","og_image":[{"width":1024,"height":576,"url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg","type":"image\/jpeg"}],"author":"marketing@longchang Group","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#article","isPartOf":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/"},"author":{"name":"marketing@longchang Group","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/03647a4ce07fdc0e453f27a2b96ccce5"},"headline":"Photoinitiator for UV Release Coatings: How to Choose 184, 1173, and TPO-L","datePublished":"2026-06-28T00:00:17+00:00","dateModified":"2026-06-28T12:06:45+00:00","mainEntityOfPage":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/"},"wordCount":1517,"publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"image":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage"},"thumbnailUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg","articleSection":["Uncategorized"],"inLanguage":"nl-NL"},{"@type":"WebPage","@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/","url":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/","name":"Photoinitiator for UV Release Coatings: 184 vs 1173 vs TPO-L","isPartOf":{"@id":"https:\/\/longchangchemical.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage"},"image":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage"},"thumbnailUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg","datePublished":"2026-06-28T00:00:17+00:00","dateModified":"2026-06-28T12:06:45+00:00","description":"Learn how to choose a photoinitiator for UV release coatings by comparing 184, 1173, and TPO-L for clear-film cure, low yellowing, formulation handling, and label or liner converting fit.","breadcrumb":{"@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#breadcrumb"},"inLanguage":"nl-NL","potentialAction":[{"@type":"ReadAction","target":["https:\/\/longchangchemical.com\/release-coating-photoinitiator\/"]}]},{"@type":"ImageObject","inLanguage":"nl-NL","@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#primaryimage","url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg","contentUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2026\/06\/release-coating-photoinitiator-hero.jpg","width":1024,"height":576},{"@type":"BreadcrumbList","@id":"https:\/\/longchangchemical.com\/release-coating-photoinitiator\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/longchangchemical.com\/"},{"@type":"ListItem","position":2,"name":"Photoinitiator for UV Release Coatings: How to Choose 184, 1173, and TPO-L"}]},{"@type":"WebSite","@id":"https:\/\/longchangchemical.com\/#website","url":"https:\/\/longchangchemical.com\/","name":"Chemisch bedrijf Longchang","description":"China chemische fabrikant \uff06 leverancier","publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/longchangchemical.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"nl-NL"},{"@type":"Organization","@id":"https:\/\/longchangchemical.com\/#organization","name":"Chemisch bedrijf Longchang","url":"https:\/\/longchangchemical.com\/","logo":{"@type":"ImageObject","inLanguage":"nl-NL","@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/","url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","contentUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","width":512,"height":512,"caption":"Longchang Chemical"},"image":{"@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/03647a4ce07fdc0e453f27a2b96ccce5","name":"marketing@longchang Groep","image":{"@type":"ImageObject","inLanguage":"nl-NL","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/a6a906641262cdfd34e337a3fa18594a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a6a906641262cdfd34e337a3fa18594a?s=96&d=mm&r=g","caption":"marketing@longchang Group"},"url":"https:\/\/longchangchemical.com\/nl\/author\/marketinglongchang-group\/"}]}},"_links":{"self":[{"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/posts\/10323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/comments?post=10323"}],"version-history":[{"count":2,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/posts\/10323\/revisions"}],"predecessor-version":[{"id":10326,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/posts\/10323\/revisions\/10326"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/media\/10324"}],"wp:attachment":[{"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/media?parent=10323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/categories?post=10323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/longchangchemical.com\/nl\/wp-json\/wp\/v2\/tags?post=10323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}