{"id":10939,"date":"2026-07-30T00:00:11","date_gmt":"2026-07-30T00:00:11","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10939"},"modified":"2026-07-30T02:06:34","modified_gmt":"2026-07-30T02:06:34","slug":"waterborne-epoxy-topcoat-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/zh\/waterborne-epoxy-topcoat-additives\/","title":{"rendered":"How to Choose Additives for Waterborne Epoxy Topcoats"},"content":{"rendered":"<p><strong>\u5feb\u901f\u56de\u7b54\uff1a<\/strong> \u4e70\u5bb6\u6b63\u5728 <strong>waterborne epoxy topcoats<\/strong> usually get a cleaner first shortlist when they stop treating every visible finish problem like one vague silicone-additive request and instead separate <strong>three different jobs<\/strong>. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3512-modified-silicone-oil-waterborne-epoxy-anti-sticking-agent\/\">CHLUMIAG\u00ae 3512<\/a> should move first when the real bottleneck is <strong>anti-sticking, blocking resistance, or finished-surface handling<\/strong> in a waterborne epoxy route. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3467-silicone-leveling-agents\/\">CHLUMIAG\u00ae 3467<\/a> deserves the earlier screen when the topcoat still shows a <strong>compatibility-first crater, fisheye, or pullback problem<\/strong> in the visible film. <a href=\"https:\/\/longchangchemical.com\/zh\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a> is the cleaner first move when the topcoat already can form a film but still is carrying <strong>microbubbles, foam carry-through, or pinholes<\/strong> that block an honest surface read.<\/p>\n<p>That is the commercially useful split. This page stays inside the CHLUMICRYL\u00ae coating-and-ink-additives direction and does <strong>not<\/strong> drift back to the older photoinitiator cluster. It also is not a duplicate of Longchang\u2019s already-live <a href=\"https:\/\/longchangchemical.com\/zh\/waterborne-topcoat-additives\/\">waterborne topcoat<\/a> page or the narrower <a href=\"https:\/\/longchangchemical.com\/zh\/anti-sticking-additives-waterborne-epoxy\/\">waterborne epoxy anti-sticking<\/a> page. It is a tighter <strong>waterborne epoxy topcoat buyer page<\/strong> for teams that need to decide whether the first sample round should solve finished-film handling, visible crater cleanup, or process-side air management.<\/p>\n<h2>Why waterborne epoxy topcoats deserve their own additive page<\/h2>\n<p>A waterborne epoxy topcoat sits in a narrower decision lane than a broad waterborne topcoat article. The buyer usually is not asking for a general coating-family overview anymore. The project already is inside an epoxy finish route, and the practical question is which additive deserves the first trial when the cured or near-cured film still sticks in handling, breaks into crater-like defects, or traps enough air to distort the final appearance read.<\/p>\n<p>That creates a different selection problem from the already-live waterborne primer or waterborne industrial pages. A primer page is earlier and more substrate-entry focused. A general topcoat page covers a wider mix of resin routes. A waterborne epoxy topcoat page needs to answer a more specific B2B question around <strong>finished-surface handling<\/strong>, <strong>compatibility-first visible-film stability<\/strong>\uff0c \u548c <strong>air-release discipline<\/strong> inside an epoxy finish process.<\/p>\n<p>General industry framing is kept conservative here. Waterborne epoxy topcoats are commonly valued for visible finish quality, cleanability, and cost-effective surface protection, which makes blocking resistance, crater-sensitive appearance, and trapped-air cleanup practical buying questions rather than decorative side issues. Product-level claims below stay anchored to current Longchang-supported product pages.<\/p>\n<h2>What the current company-supported evidence actually separates<\/h2>\n<ul>\n<li><strong>CHLUMIAG\u00ae 3512<\/strong> is supported by Longchang as a <strong>\u591a\u7ec4\u5206\u6539\u6027\u805a\u7845\u6c27\u70f7<\/strong> route positioned directly as a <strong>\u6c34\u6027\u73af\u6c27\u9632\u7c98\u5242<\/strong>. The current company page supports a recommended dosage of <strong>0.1% \u81f3 1.0%<\/strong>, direct addition or dilution, dilution with <strong>alkanes and aromatics<\/strong>, and use across <strong>\u7d2b\u5916\u3001\u6eb6\u5242\u548c\u6c34\u57fa\u4f53\u7cfb<\/strong>. That makes it the cleaner first route when the buyer is already inside a waterborne epoxy topcoat and the complaint is about <strong>blocking, sticking, or poor finished-surface separation<\/strong>.<\/li>\n<li><strong>CHLUMIAG\u00ae 3467<\/strong> is supported by Longchang as a <strong>\u591a\u7ec4\u5206\u6539\u6027\u805a\u7845\u6c27\u70f7<\/strong> \u4e3a\u4e86 <strong>\u7d2b\u5916\u3001\u6eb6\u5242\u548c\u6c34\u57fa\u4f53\u7cfb<\/strong>. The current company-supported route keeps together <strong>leveling<\/strong>, <strong>\u53cd\u706b\u5c71\u53e3<\/strong>, <strong>\u57fa\u6750\u6da6\u6e7f<\/strong>, and a clear note that it <strong>\u4f18\u5148\u8003\u8651\u7cfb\u7edf\u517c\u5bb9\u6027<\/strong>. Supported dosage is <strong>0.05% \u81f3 1.0%<\/strong> of total formulation for solvent systems, <strong>0.5% \u81f3 5%<\/strong> of resin amount for resin modification, and <strong>0.5% \u81f3 5%<\/strong> of total formulation for water-based systems.<\/li>\n<li><strong>CHLUMICRYL\u00ae DF-D9904BR<\/strong> is supported as a <strong>polyether modified polysiloxane compound<\/strong>, <strong>silica-free<\/strong>, for <strong>\u6c34\u57fa\u7cfb\u7edf<\/strong>. Longchang directly positions it to <strong>prevent microbubbles and pinholes<\/strong> in the coating film of water-based coatings and inks. The supported dosage range is <strong>0.1% \u81f3 1.0%<\/strong>, and the product page recommends <strong>co-solvent-first, high-shear incorporation<\/strong> instead of casual late after-addition.<\/li>\n<\/ul>\n<p>That is enough company-supported separation to build a real buyer page. The point is not to pretend one additive solves every epoxy-topcoat complaint. The point is to help the buyer choose the <strong>first better screening route<\/strong> based on what the waterborne epoxy topcoat actually is failing to do.<\/p>\n<h2>\u5feb\u901f\u5bf9\u6bd4\u8868\uff1a\u54ea\u6761\u8def\u7ebf\u5e94\u8be5\u4f18\u5148\u663e\u793a\uff1f<\/h2>\n<table>\n<thead>\n<tr>\n<th>Buyer priority in waterborne epoxy topcoats<\/th>\n<th>\u6700\u4f73\u9996\u9009\u8def\u7ebf<\/th>\n<th>\u4e3a\u4ec0\u4e48\u5b83\u5e94\u8be5\u6392\u5728\u7b2c\u4e00\u4f4d<\/th>\n<th>\u4e3b\u8981\u89c2\u5bdf\u70b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Blocking, sticking, or poor finished-surface separation after drying or cure<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3512-modified-silicone-oil-waterborne-epoxy-anti-sticking-agent\/\">CHLUMIAG\u00ae 3512<\/a><\/td>\n<td>Longchang positions it directly as a waterborne epoxy anti-sticking route with a lower-dose screen and direct-or-diluted addition logic<\/td>\n<td>Avoid casual mixing with other additives and keep the anti-sticking job distinct from crater or bubble control<\/td>\n<\/tr>\n<tr>\n<td>Crater-sensitive breakup, fisheyes, or pullback that still read like a compatibility problem inside the epoxy topcoat<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3467-silicone-leveling-agents\/\">CHLUMIAG\u00ae 3467<\/a><\/td>\n<td>The supported route keeps together leveling, anti-cratering, substrate wetting, and compatibility-first logic<\/td>\n<td>Its current product logic prioritizes compatibility more than refined surface feel<\/td>\n<\/tr>\n<tr>\n<td>The topcoat already reaches the surface, but trapped air still creates microbubbles or pinholes in the visible film<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a><\/td>\n<td>Longchang directly positions it to prevent microbubbles and pinholes in water-based coating films<\/td>\n<td>It is not a casual late after-add, and the recommended co-solvent plus high-shear route should be respected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When CHLUMIAG\u00ae 3512 is the better first move<\/h2>\n<p>3512 should move first when the waterborne epoxy topcoat already is close enough on laydown, but the finished surface still shows a <strong>handling or separation problem<\/strong>. This is the stronger first route when coated parts, stacked panels, or finished surfaces still block, stick, or release poorly after contact.<\/p>\n<p>That matters because a waterborne epoxy topcoat is often judged on what happens <strong>after film formation<\/strong>, not only during application. If the visible film looks acceptable at first but fails during handling or contact, a wetting-only or bubble-only route can miss the real bottleneck.<\/p>\n<ul>\n<li><strong>Best first-screen use:<\/strong> anti-sticking, blocking-resistance, and finished-surface handling in waterborne epoxy topcoats<\/li>\n<li><strong>Supported dosage:<\/strong> \u603b\u914d\u65b9\u91cf\u4e3a 0.1% \u81f3 1.0%<\/li>\n<li><strong>Addition logic:<\/strong> direct addition or dilution<\/li>\n<li><strong>\u4e3b\u8981\u4f18\u52bf\uff1a<\/strong> direct problem-to-product fit because Longchang names it as a waterborne epoxy anti-sticking route<\/li>\n<\/ul>\n<p>In short, 3512 is the better first move when the buyer already knows the topcoat issue sits in <strong>surface behavior after laydown<\/strong>, not in initial crater cleanup or trapped-air control.<\/p>\n<h2>\u5f53 CHLUMIAG\u00ae 3467 \u662f\u66f4\u4f73\u7684\u9996\u9009\u65b9\u6848\u65f6<\/h2>\n<p>3467 should move ahead first when the topcoat can form a film, but still shows <strong>craters<\/strong>, <strong>fisheyes<\/strong>, <strong>pullback<\/strong>, or other signs that the real bottleneck is a <strong>compatibility-first leveling and anti-cratering problem<\/strong>. This route is stronger when the issue is not simply sticking after cure, but unstable visible-film formation during the application and settling window.<\/p>\n<p>That distinction matters in waterborne epoxy topcoats because visible-film defects are often judged more harshly than on lower layers. Longchang\u2019s current product page is useful here because 3467 is not positioned only as a feel additive. The supported route keeps together <strong>leveling<\/strong>, <strong>\u53cd\u706b\u5c71\u53e3<\/strong>, <strong>\u57fa\u6750\u6da6\u6e7f<\/strong>\uff0c \u548c <strong>compatibility-first logic<\/strong>.<\/p>\n<ul>\n<li><strong>Best first-screen use:<\/strong> crater-sensitive and compatibility-led topcoat screening<\/li>\n<li><strong>Water-based dosage guidance:<\/strong> 0.5% to 5% of total formulation on the current company page<\/li>\n<li><strong>\u4e3b\u8981\u4f18\u52bf\uff1a<\/strong> one route that already combines anti-cratering, wetting, and system-compatibility logic<\/li>\n<li><strong>Main caution:<\/strong> Longchang says this route prioritizes compatibility, so it is best screened when stability comes before a more refined feel target<\/li>\n<\/ul>\n<p>So 3467 is the better first move when the waterborne epoxy topcoat still needs a <strong>compatibility-first cleanup route<\/strong> before the team decides whether the remaining problem is only anti-sticking or something else.<\/p>\n<h2>\u5f53 CHLUMICRYL\u00ae DF-D9904BR \u662f\u66f4\u4f73\u7684\u9996\u9009\u65b9\u6848\u65f6<\/h2>\n<p>DF-D9904BR should move ahead first when the waterborne epoxy topcoat is losing the fight to <strong>microbubbles, foam carry-through, or pinholes<\/strong>. In those cases, a better anti-sticking route or broader compatibility route usually will not clean up the panel enough to judge the rest of the package honestly.<\/p>\n<p>Longchang\u2019s product page is direct here. DF-D9904BR is supported specifically to prevent <strong>microbubbles and pinholes<\/strong> in the coating film of water-based coatings and inks, and it comes with a process note that matters commercially: the product should enter through a <strong>co-solvent step<\/strong> and be added under <strong>high shear<\/strong> rather than being treated as a late shortcut.<\/p>\n<ul>\n<li><strong>Best first-screen use:<\/strong> persistent microbubbles and pinholes in waterborne epoxy topcoats<\/li>\n<li><strong>Dosage guidance:<\/strong> \u603b\u914d\u65b9\u91cf\u4e3a 0.1% \u81f3 1.0%<\/li>\n<li><strong>Preparation rule:<\/strong> use the supported co-solvent-first, high-shear route<\/li>\n<li><strong>Main reason to shortlist it:<\/strong> it solves a different first problem from anti-sticking or compatibility-first crater cleanup<\/li>\n<\/ul>\n<p>This is the stronger first move when the visible topcoat defect is being limited by <strong>air management<\/strong>, not by a missing anti-sticking route or a broader anti-cratering route.<\/p>\n<h2>\u4e70\u5bb6\u5728\u7d22\u53d6\u6837\u54c1\u524d\u5e94\u8be5\u5982\u4f55\u9009\u62e9<\/h2>\n<h3>1. Start with the real first failure in the topcoat<\/h3>\n<p>If the finished film still blocks or sticks after contact, start with 3512. If the visible topcoat still breaks into crater or fisheye behavior, move 3467 forward. If the layer already forms but trapped air still is corrupting the finish read, start with DF-D9904BR.<\/p>\n<h3>2. Keep handling logic separate from compatibility logic<\/h3>\n<p>A topcoat that looks acceptable but still sticks in handling and a topcoat that still breaks into craters are not the same additive problem. Separating those routes early usually makes the first sample round cleaner.<\/p>\n<h3>3. Keep air-release cleanup separate from both surface routes<\/h3>\n<p>Microbubble and pinhole control are not just smaller versions of anti-sticking rescue or crater rescue. If trapped air is still in the film, it can distort how the team reads every later additive.<\/p>\n<h3>4. Respect the system watchpoints<\/h3>\n<p>3512 should not be treated as a vague catch-all surface additive. 3467 prioritizes compatibility more than refined feel. DF-D9904BR should not be treated as a late after-add shortcut. Those watchpoints are part of the selection logic, not footnotes.<\/p>\n<h3>5. Keep the first trial set small and honest<\/h3>\n<p>For many waterborne epoxy-topcoat projects, the cleanest first plan is one <strong>3512 anti-sticking route<\/strong>\uff0c \u4e00 <strong>3467 compatibility route<\/strong>\uff0c\u4ee5\u53ca\u4e00\u4e2a <strong>DF-D9904BR bubble-control route<\/strong>. That usually teaches more than forcing several near-neighbor additives into the same opening screen.<\/p>\n<h2>\u672c\u9875\u63a8\u8350\u7684\u9f99\u660c\u8def\u7ebf<\/h2>\n<ul>\n<li><strong>Anti-sticking-first route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3512-modified-silicone-oil-waterborne-epoxy-anti-sticking-agent\/\">CHLUMIAG\u00ae 3512<\/a><\/li>\n<li><strong>\u517c\u5bb9\u6027\u4f18\u5148\u8def\u7ebf\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/chlumiag3467-silicone-leveling-agents\/\">CHLUMIAG\u00ae 3467<\/a><\/li>\n<li><strong>Bubble-control route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a><\/li>\n<li><strong>\u96c6\u7fa4\u6982\u89c8\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/chlumicryl-coating-ink-additives\/\">CHLUMICRYL\u00ae \u6d82\u5c42\u548c\u6cb9\u58a8\u6dfb\u52a0\u5242<\/a><\/li>\n<li><strong>Related broad stage page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/waterborne-topcoat-additives\/\">How to Choose Additives for Waterborne Topcoats<\/a><\/li>\n<li><strong>\u76f8\u5173\u7f3a\u9677\u9875\u9762\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/anti-sticking-additives-waterborne-epoxy\/\">\u5982\u4f55\u9009\u62e9\u6c34\u6027\u73af\u6c27\u6d82\u6599\u7684\u9632\u7c98\u6dfb\u52a0\u5242<\/a><\/li>\n<li><strong>Related broader application page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/waterborne-industrial-coating-additives\/\">How to Choose Surface Additives for Waterborne Industrial Coatings<\/a><\/li>\n<li><strong>\u76f8\u5173\u7f3a\u9677\u9875\u9762\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/coating-fisheye-additive-selection\/\">How to Choose Additives for Coating Fisheyes<\/a><\/li>\n<li><strong>\u76f8\u5173\u7f3a\u9677\u9875\u9762\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/coating-pinhole-additive-selection\/\">How to Choose Additives for Coating Pinholes<\/a><\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>Which additive should I screen first if a waterborne epoxy topcoat still sticks after drying or cure?<\/h3>\n<p>Usually 3512, because Longchang positions it directly as a waterborne epoxy anti-sticking route with a practical 0.1% to 1.0% screen and direct-or-diluted addition logic.<\/p>\n<h3>When should 3467 move ahead of 3512?<\/h3>\n<p>3467 should move ahead when the topcoat can already form a film but still shows crater-sensitive breakup, fisheyes, or pullback that read more like a compatibility and leveling problem than a finished-surface handling problem.<\/p>\n<h3>When does DF-D9904BR make more sense than the other two?<\/h3>\n<p>It makes more sense when microbubbles, foam carry-through, or pinholes still dominate the visible defect pattern and the process can follow the recommended co-solvent-first, high-shear addition route.<\/p>\n<h3>Is this page the same as the waterborne epoxy anti-sticking page?<\/h3>\n<p>No. The anti-sticking page is a narrower defect-led page built around anti-sticking routes only. This new page is broader inside the waterborne epoxy topcoat stage and helps buyers decide whether the first issue is handling, compatibility-led crater cleanup, or trapped-air cleanup.<\/p>\n<h2>\u9700\u8981\u4e00\u4e2a\u66f4\u7cbe\u7b80\u7684\u5019\u9009\u540d\u5355\u5417\uff1f<\/h2>\n<p>If your waterborne epoxy topcoat project is stuck between <strong>finished-film sticking<\/strong>, <strong>crater-sensitive visible-film instability<\/strong>\uff0c \u548c <strong>microbubble carry-through<\/strong>, stop treating them as the same additive request. Start with the real bottleneck. That usually makes the next CHLUMICRYL\u00ae sample decision faster and more commercially useful.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical CHLUMICRYL\u00ae buyer-selection page for waterborne epoxy topcoats, separating anti-sticking handling, compatibility-first crater cleanup, and water-based microbubble control.<\/p>","protected":false},"author":6,"featured_media":10940,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10939","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>Waterborne Epoxy Topcoat Additives | Anti-Sticking, Crater Control, Bubble Cleanup<\/title>\n<meta name=\"description\" content=\"Choose additives for waterborne epoxy topcoats by separating anti-sticking handling, compatibility-first crater cleanup, and water-based microbubble control using CHLUMIAG\u00ae 3512, CHLUMIAG\u00ae 3467, and CHLUMICRYL\u00ae DF-D9904BR.\" \/>\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\/zh\/waterborne-epoxy-topcoat-additives\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Waterborne Epoxy Topcoat Additives | Anti-Sticking, Crater Control, Bubble Cleanup\" \/>\n<meta property=\"og:description\" content=\"Choose additives for waterborne epoxy topcoats by separating anti-sticking handling, compatibility-first crater cleanup, and water-based microbubble control using CHLUMIAG\u00ae 3512, CHLUMIAG\u00ae 3467, and CHLUMICRYL\u00ae DF-D9904BR.\" \/>\n<meta property=\"og:url\" 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