{"id":10990,"date":"2026-08-01T00:00:34","date_gmt":"2026-08-01T00:00:34","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10990"},"modified":"2026-08-01T16:09:08","modified_gmt":"2026-08-01T16:09:08","slug":"waterborne-coil-coating-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/waterborne-coil-coating-additives\/","title":{"rendered":"How to Choose Additives for Waterborne Coil Coatings"},"content":{"rendered":"<p><strong>R\u00e9ponse rapide :<\/strong> acheteurs travaillant sur <strong>waterborne coil coatings<\/strong> usually get a cleaner first shortlist when they stop asking one additive to rescue every defect on the line and instead separate <strong>three different jobs<\/strong>. <a href=\"https:\/\/longchangchemical.com\/fr\/product\/agesin-wd-d547-wetting-agent\/\">CHLUMICRYL\u00ae WD-D547<\/a> should move first when the coil coating still needs stronger <strong>metal-strip wetting, anti-cratering support, and recoating balance<\/strong>. <a href=\"https:\/\/longchangchemical.com\/fr\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a> deserves the earlier screen when the real bottleneck is <strong>foam, microbubbles, or pinholes<\/strong> in the water-based film. <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a> is the cleaner first move when the coating can already form a workable film but still needs a stronger <strong>surface smoothness, dry-feel, gloss-balance, and scratch-balance route<\/strong>.<\/p>\n<p>That is the commercially useful split. This page stays inside the redirected <strong>CHLUMICRYL\u00ae Additifs pour rev\u00eatements et encres<\/strong> direction and does <strong>pas<\/strong> fall back to the older photoinitiator cluster. It is also not a duplicate of Longchang\u2019s already-live <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-direct-to-metal-additives\/\">waterborne direct-to-metal coatings<\/a>, <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-direct-to-metal-topcoat-additives\/\">waterborne direct-to-metal topcoats<\/a>, ou <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-topcoat-additives\/\">waterborne topcoats<\/a> pages. It is a narrower <strong>waterborne coil-coating buyer page<\/strong> for teams qualifying continuous metal-strip coatings where strip entry, trapped-air cleanup, and finished-film quality need to be separated early.<\/p>\n<h2>Why waterborne coil coatings deserve their own additive page<\/h2>\n<p>A waterborne coil coating is a tighter buyer problem than a broad industrial metal coating page. Buyers are often judging whether the liquid film can enter and wet the moving metal strip cleanly, whether the system still traps air and leaves pinholes, and whether the final coated surface looks smooth enough while holding a commercially acceptable scratch and handling balance.<\/p>\n<p>That creates a different first-screen question from a broad direct-to-metal article. In practical formulation work, the first additive decision often needs to separate a <strong>strip-entry and anti-cratering problem<\/strong> from a true <strong>microbubble and pinhole problem<\/strong>, and both from a later <strong>final-surface smoothness and scratch-balance problem<\/strong>. Those are not the same first screen, even when they all show up on the same coated panel.<\/p>\n<p>General industry framing supports that narrower structure conservatively. Coil-coating teams commonly judge the line first for <strong>surface entry and crater behavior<\/strong>, <strong>air-release discipline<\/strong>et <strong>finished-film appearance durability balance<\/strong>. The product facts below stay tied to Longchang-supported product pages, while the broader framing is used only to explain why buyers should not treat every line defect as the same additive job.<\/p>\n<h2>What the current company-supported evidence actually separates<\/h2>\n<ul>\n<li><strong>CHLUMICRYL\u00ae WD-D547<\/strong> is supported as a <strong>polyether modified polydimethyl siloxane<\/strong> pour <strong>Peintures \u00e0 l&#039;eau, peintures \u00e0 solvant et sans solvant, et peintures \u00e0 s\u00e9chage UV<\/strong>. Longchang says it can <strong>most effectively reduce surface tension in water systems<\/strong> and supports <strong>excellent wetting and spreading ability<\/strong>, plus <strong>anti-crat\u00e9risation<\/strong>, <strong>re-coating<\/strong>, <strong>d\u00e9moussage<\/strong>et <strong>leveling<\/strong>La plage d&#039;ajout sugg\u00e9r\u00e9e est <strong>0,1% \u00e0 0,5%<\/strong>.<\/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>syst\u00e8mes \u00e0 base d&#039;eau<\/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% \u00e0 1,0%<\/strong>, and the page recommends a <strong>co-solvent-first, high-shear incorporation route<\/strong>.<\/li>\n<li><strong>CHLUMIFE\u00ae 3166<\/strong> is supported as a <strong>polyorganosiloxane modifi\u00e9 par poly\u00e9ther<\/strong> pour <strong>Syst\u00e8mes \u00e0 base d&#039;UV, de solvants et d&#039;eau<\/strong>. Longchang supports reduced surface tension, <strong>mouillabilit\u00e9 du substrat<\/strong>, <strong>rugosit\u00e9 de surface<\/strong>, <strong>r\u00e9sistance aux rayures<\/strong>, <strong>anti-blocage<\/strong>, <strong>leveling<\/strong>, <strong>am\u00e9lioration du brillant<\/strong>, and especially <strong>excellente sensation de sec<\/strong>La dose recommand\u00e9e est <strong>0,05% \u00e0 1,0%<\/strong>, with cautions around <strong>pinholes<\/strong>, <strong>whitening<\/strong>, and possible <strong>foam-stabilizing effects<\/strong>.<\/li>\n<\/ul>\n<p>That is enough company-supported separation to build a real buyer page without inventing unsupported coil-only claims. The point is not to pretend one additive can solve every line complaint. The point is to help a buyer choose the <strong>first better test route<\/strong> based on what the waterborne coil coating is actually failing to do.<\/p>\n<h2>Tableau comparatif rapide\u00a0: quel itin\u00e9raire m\u00e9rite la premi\u00e8re place\u00a0?<\/h2>\n<table>\n<thead>\n<tr>\n<th>Buyer priority in waterborne coil coatings<\/th>\n<th>Meilleur premier itin\u00e9raire<\/th>\n<th>Pourquoi cela devrait \u00eatre la premi\u00e8re chose \u00e0 faire<\/th>\n<th>Point de surveillance principal<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>The waterborne coil film still hesitates on metal, pulls back, or shows crater pressure early in film formation<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/fr\/product\/agesin-wd-d547-wetting-agent\/\">CHLUMICRYL\u00ae WD-D547<\/a><\/td>\n<td>Longchang supports it directly around wetting, spreading, anti-cratering, recoating, and leveling for water-borne paint systems<\/td>\n<td>Use it when strip-entry behavior is still the real blocker, not when trapped air already dominates the defect pattern<\/td>\n<\/tr>\n<tr>\n<td>Persistent microbubbles, foam carry-through, or pinholes are blocking an honest read of the coil-coated film<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/fr\/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<tr>\n<td>The coating already can form a film, but still needs smoother appearance, better dry feel, more gloss balance, and stronger scratch-balance support<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a><\/td>\n<td>Longchang supports it as a broader final-surface route across smoothness, gloss, anti-blocking, scratch resistance, and dry feel<\/td>\n<td>Qualification should still watch for pinholes, whitening, or foam stabilization in sensitive systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When CHLUMICRYL\u00ae WD-D547 is the better first move<\/h2>\n<p>WD-D547 should move first when the waterborne coil coating still behaves like a <strong>metal-strip entry problem<\/strong>. This is the stronger route when the film still hesitates on the strip, shows crater pressure too early, or needs broader <strong>wetting and recoating support<\/strong> before the team can judge higher-level surface quality honestly.<\/p>\n<p>That distinction matters because a coil-coated film can look rough for more than one reason. If the line still is not entering the surface cleanly enough, a higher-level smoothness additive will often only blur the first-screen result. Longchang\u2019s product page is useful here because WD-D547 is not framed only as a generic surfactant. It is supported directly around <strong>wetting and spreading<\/strong>, plus <strong>anti-crat\u00e9risation<\/strong>, <strong>re-coating<\/strong>, <strong>d\u00e9moussage<\/strong>et <strong>leveling<\/strong>, while stating that it most effectively reduces surface tension in water systems.<\/p>\n<ul>\n<li><strong>Best first-screen use:<\/strong> strip-entry wetting, anti-cratering, and recoating balance in waterborne coil coatings<\/li>\n<li><strong>Dosage guidance:<\/strong> 0.1% to 0.5% of total formulation<\/li>\n<li><strong>Principal atout :<\/strong> one route that already combines water-system wetting, anti-cratering, and recoating logic<\/li>\n<li><strong>Main caution:<\/strong> use it when metal-entry behavior is still the first bottleneck, not as a shortcut for a defect that is really bubble-led or finish-led<\/li>\n<\/ul>\n<p>In short, WD-D547 is the better first move when the waterborne coil coating still needs cleaner surface entry and early-film stability before the team starts chasing final-surface refinement.<\/p>\n<h2>Quand CHLUMICRYL\u00ae DF-D9904BR est le meilleur premier choix<\/h2>\n<p>DF-D9904BR should move ahead first when the waterborne coil coating is losing the fight to <strong>microbubbles, foam carry-through, or pinholes<\/strong>. In those cases, better wetting or a better final-surface route usually will not clean up the coated 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 coil coatings<\/li>\n<li><strong>Dosage guidance:<\/strong> 0,1% \u00e0 1,0% de la formulation totale<\/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 strip-entry wetting or broader surface-refinement routes<\/li>\n<\/ul>\n<p>This is the stronger first move when the visible coil-coating defect is being limited by <strong>air management<\/strong>, not by a missing wetting or finish-balance route.<\/p>\n<h2>Quand CHLUMIFE\u00ae 3166 est le meilleur premier pas<\/h2>\n<p>3166 deserves the earlier screen when the waterborne coil coating can already form a workable film and the buyer\u2019s real question has shifted into <strong>final-surface refinement<\/strong>. This is the cleaner first path when the film already wets and levels directionally well enough, but still needs a stronger <strong>smoothness<\/strong>, <strong>dry feel<\/strong>, <strong>brillant<\/strong>et <strong>scratch-balance<\/strong> route before the coated metal surface looks commercially ready.<\/p>\n<p>Longchang\u2019s current product page keeps 3166 useful here because it is not positioned only as a niche feel additive. It is supported around <strong>contr\u00f4le de la tension superficielle<\/strong>, <strong>mouillabilit\u00e9 du substrat<\/strong>, <strong>rugosit\u00e9 de surface<\/strong>, <strong>r\u00e9sistance aux rayures<\/strong>, <strong>anti-blocage<\/strong>, <strong>leveling<\/strong>, <strong>am\u00e9lioration du brillant<\/strong>, and especially <strong>excellente sensation de sec<\/strong>. That combination is commercially useful for coil-coated surfaces where the buyer is already past basic defect rescue and wants a calmer, more refined finished film.<\/p>\n<ul>\n<li><strong>Best first-screen use:<\/strong> final-surface smoothness, dry feel, gloss, and scratch-balance refinement<\/li>\n<li><strong>Dosage guidance:<\/strong> 0.05% to 1.0% of total formulation<\/li>\n<li><strong>Principal atout :<\/strong> one broader route instead of another narrow defect-only screen<\/li>\n<li><strong>Main caution:<\/strong> Longchang also flags possible pinholes, whitening, and foam stabilization, so the line should be stable enough to read those tradeoffs honestly<\/li>\n<\/ul>\n<p>So 3166 is the cleaner first move when the job is to improve the overall finish quality of a waterborne coil coating, not only to rescue wetting or bubble defects.<\/p>\n<h2>Comment les acheteurs doivent choisir avant de demander des \u00e9chantillons<\/h2>\n<h3>1. Start with the first visible failure on the coated strip<\/h3>\n<p>If the film still hesitates, pulls back, or craters on metal, start with WD-D547. If bubbles and pinholes still dominate the panel, move DF-D9904BR forward. If the film already forms but the final surface still needs a better feel-and-scratch balance, start with 3166.<\/p>\n<h3>2. Keep strip-entry logic separate from bubble logic<\/h3>\n<p>Many metal-coating projects collapse wetting and defoaming into the same request. That usually makes the first sample round noisy. A coating that still hesitates on the strip and a coating that traps air are not necessarily asking for the same additive first.<\/p>\n<h3>3. Keep finish-refinement work separate from defect rescue<\/h3>\n<p>Smoothness, gloss, dry feel, and scratch-balance are not just smaller versions of wetting correction or bubble cleanup. If the film still has basic strip-entry or air-release problems, it can distort how the team reads every other surface additive.<\/p>\n<h3>4. Respect the process note, not only the headline benefit<\/h3>\n<p>WD-D547 is attractive because it can stabilize difficult waterborne strip-entry behavior. DF-D9904BR is attractive because it directly solves microbubble and pinhole pressure. 3166 is attractive because it broadens final-surface refinement. But their practical notes are just as important as their headline roles. The supported dosing window, addition route, and watchpoints often decide which route wins the first sample round.<\/p>\n<h3>5. Keep the first trial set small and honest<\/h3>\n<p>For many waterborne coil-coating projects, the cleanest first plan is one <strong>WD-D547 strip-entry route<\/strong>, un <strong>DF-D9904BR microbubble-control route<\/strong>et un <strong>3166 final-surface refinement route<\/strong>. That usually teaches more than forcing several near-neighbor additives into the same opening trial.<\/p>\n<h2>Itin\u00e9raire recommand\u00e9 pour Longchang \u00e0 partir de cette page<\/h2>\n<ul>\n<li><strong>Strip-entry route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/product\/agesin-wd-d547-wetting-agent\/\">CHLUMICRYL\u00ae WD-D547<\/a><\/li>\n<li><strong>Bubble-control route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a><\/li>\n<li><strong>Final-surface route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumife-3166\/\">CHLUMIFE\u00ae 3166<\/a><\/li>\n<li><strong>Aper\u00e7u du cluster\u00a0:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/chlumicryl-coating-ink-additives\/\">CHLUMICRYL\u00ae Additifs pour rev\u00eatements et encres<\/a><\/li>\n<li><strong>Related metal-coating page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-direct-to-metal-additives\/\">How to Choose Additives for Waterborne Direct-to-Metal Coatings<\/a><\/li>\n<li><strong>Related stage page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-direct-to-metal-primer-additives\/\">How to Choose Additives for Waterborne Direct-to-Metal Primers<\/a><\/li>\n<li><strong>Related stage page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/waterborne-direct-to-metal-topcoat-additives\/\">How to Choose Additives for Waterborne Direct-to-Metal Topcoats<\/a><\/li>\n<li><strong>Page relative au d\u00e9faut\u00a0:<\/strong> <a href=\"https:\/\/longchangchemical.com\/fr\/coating-pinhole-additive-selection\/\">How to Choose Additives for Coating Pinholes<\/a><\/li>\n<\/ul>\n<h2>FAQ<\/h2>\n<h3>Which additive should I screen first if a waterborne coil coating still is cratering or pulling back on metal?<\/h3>\n<p>Usually WD-D547, because Longchang directly supports it for wetting, spreading, anti-cratering, recoating, and leveling in water-borne paint systems.<\/p>\n<h3>When should DF-D9904BR move ahead of WD-D547?<\/h3>\n<p>DF-D9904BR should move ahead 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>When does 3166 make more sense than the other two?<\/h3>\n<p>It makes more sense when the film already can form and the main question has shifted into surface smoothness, dry feel, gloss, and broader scratch-balance cleanup rather than basic wetting or bubble rescue.<\/p>\n<h3>Is this page the same as the broader waterborne direct-to-metal page?<\/h3>\n<p>No. The broader DTM page covers a wider metal-coating branch. This page narrows the buyer question to the waterborne coil-coating window and helps choose between strip-entry wetting, water-based bubble control, and final-surface refinement.<\/p>\n<h3>Does this page make corrosion or end-use compliance claims?<\/h3>\n<p>No. This page stays focused on additive-selection logic for waterborne coil-coating workflows. Any corrosion package, regulatory requirement, or end-use qualification still needs separate formulation and application review.<\/p>\n<h2>Besoin d'une liste plus courte ?<\/h2>\n<p>If your waterborne coil-coating project is stuck between <strong>metal-strip entry<\/strong>, <strong>microbubble carry-through<\/strong>et <strong>final-surface refinement<\/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 guide for waterborne coil coatings that separates metal-strip wetting and anti-cratering, water-based microbubble cleanup, and final-surface smoothness or scratch-balance screening.<\/p>","protected":false},"author":6,"featured_media":10991,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10990","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>How to Choose Additives for Waterborne Coil Coatings | CHLUMICRYL\u00ae<\/title>\n<meta name=\"description\" content=\"Choose additives for waterborne 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