{"id":10904,"date":"2026-07-28T00:00:29","date_gmt":"2026-07-28T00:00:29","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10904"},"modified":"2026-07-28T02:06:59","modified_gmt":"2026-07-28T02:06:59","slug":"waterborne-direct-to-metal-primer-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/tr\/waterborne-direct-to-metal-primer-additives\/","title":{"rendered":"How to Choose Additives for Waterborne Direct-to-Metal Primers"},"content":{"rendered":"<p><strong>H\u0131zl\u0131 cevap:<\/strong> al\u0131c\u0131lar \u00fczerinde \u00e7al\u0131\u015f\u0131yor <strong>waterborne direct-to-metal primers<\/strong> usually get a cleaner first shortlist when they separate <strong>three different jobs<\/strong> instead of asking one additive to rescue every metal-panel defect at once. Start with <a href=\"https:\/\/longchangchemical.com\/tr\/product\/agesin-wd-d547-wetting-agent\/\"><strong>CHLUMICRYL\u00ae WD-D547<\/strong><\/a> when the primer still needs cleaner <strong>metal-surface wetting, spreading, and anti-cratering<\/strong>. Move <a href=\"https:\/\/longchangchemical.com\/tr\/product\/chlumiag3467-silicone-leveling-agents\/\"><strong>CHLUMIAG\u00ae 3467<\/strong><\/a> forward when the primer reaches the panel but still shows a <strong>compatibility-first crater, fisheye, or pullback problem<\/strong>. Start with <a href=\"https:\/\/longchangchemical.com\/tr\/product\/agesin-we-d9904br-defoamer\/\"><strong>CHLUMICRYL\u00ae DF-D9904BR<\/strong><\/a> when the real visible blocker is <strong>microbubbles, foam carry-through, or pinholes<\/strong> in the water-based primer film.<\/p>\n<p>This page stays inside the redirected <strong>CHLUMICRYL\u00ae Kaplama ve M\u00fcrekkep Katk\u0131lar\u0131<\/strong> direction and does <strong>Olumsuz<\/strong> fall back to the older photoinitiator cluster. It also is not a duplicate of Longchang\u2019s already-live <a href=\"https:\/\/longchangchemical.com\/tr\/waterborne-primer-additives\/\">waterborne primer<\/a> page or the broader <a href=\"https:\/\/longchangchemical.com\/tr\/waterborne-direct-to-metal-additives\/\">waterborne direct-to-metal coatings<\/a> page. It answers a narrower B2B question: <strong>which additive deserves the first trial when a waterborne DTM primer still is not giving a trustworthy base for the next coat?<\/strong><\/p>\n<h2>Why waterborne direct-to-metal primers deserve their own additive page<\/h2>\n<p>A <strong>waterborne direct-to-metal primer<\/strong> sits in a tighter buyer lane than either a general waterborne primer page or a broader direct-to-metal coatings page. The primer has to do more than simply reach the metal. It has to leave a stable enough film that the formulator can judge the next coat, corrosion package, or final appearance honestly.<\/p>\n<p>That creates a different first-screen question from a broad DTM article. In practical formulation work, the first additive decision often needs to separate a <strong>metal-interface wetting and anti-cratering problem<\/strong> from a <strong>compatibility-first film-stability problem<\/strong>, and both from a true <strong>water-based air-release problem<\/strong>. Those are not the same first screen, even when the same metal panel trial shows all three symptoms.<\/p>\n<p>General industry framing supports that split conservatively. Waterborne DTM primer work is often judged first by how cleanly the primer wets metal, whether the film stays stable instead of pulling back or cratering, and whether entrained air is still corrupting the primer read before the next layer gets a fair chance. The product-specific facts below still stay tied to current Longchang-supported product pages.<\/p>\n<h2>What the current company-supported evidence actually separates<\/h2>\n<ul>\n<li><strong>CHLUMICRYL\u00ae WD-D547<\/strong> is supported by Longchang as a <strong>polyether modified polydimethyl siloxane<\/strong> route for <strong>water-borne paint, solvent and solvent-free paint, and UV cure paint<\/strong>. The current company page directly supports <strong>excellent wetting and spreading<\/strong>, says it can <strong>most effectively reduce surface tension in water systems<\/strong>, and also keeps together <strong>anti-cratering, re-coating, defoaming, and leveling<\/strong>. Supported dosage is <strong>0,1% ila 0,5%<\/strong>.<\/li>\n<li><strong>CHLUMIAG\u00ae 3467<\/strong> desteklenmektedir <strong>\u00e7ok bile\u015fenli modifiye polisiloksan<\/strong> that works across <strong>UV, \u00e7\u00f6z\u00fcc\u00fc ve su bazl\u0131 sistemler<\/strong>. The company-supported route keeps together <strong>leveling<\/strong>, <strong>krater kar\u015f\u0131t\u0131<\/strong>, <strong>y\u00fczey \u0131slatma<\/strong>, and a clear note that it <strong>sistem uyumlulu\u011funa \u00f6ncelik verir<\/strong>. Supported dosage is <strong>0.05% ile 1.0% aras\u0131nda<\/strong> of total formulation for solvent systems, <strong>0.5% - 5%<\/strong> of resin amount for resin modification, and <strong>0.5% - 5%<\/strong> of total formulation for water-based systems.<\/li>\n<li><strong>CHLUMICRYL\u00ae DF-D9904BR<\/strong> desteklenmektedir <strong>polyether modified polysiloxane compound<\/strong>, <strong>silica-free<\/strong>, for <strong>su bazl\u0131 sistemler<\/strong>. Longchang directly positions it to <strong>prevent microbubbles and pinholes<\/strong> in the coating film of water-based coatings and inks. Supported dosage is <strong>0.1% ile 1.0% aras\u0131<\/strong>, and the product should be added under <strong>y\u00fcksek kesme<\/strong>, ideally after going into a co-solvent first.<\/li>\n<\/ul>\n<p>That is enough company-supported separation to build a real buyer page without inventing unsupported direct-to-metal primer claims. The goal is not to pretend one additive solves every metal-primer problem. The goal is to help the buyer choose the <strong>first better test route<\/strong>.<\/p>\n<h2>H\u0131zl\u0131 kar\u015f\u0131la\u015ft\u0131rma tablosu: Hangi rota ilk ekranda yer almay\u0131 hak ediyor?<\/h2>\n<table>\n<thead>\n<tr>\n<th>Buyer priority in waterborne DTM primers<\/th>\n<th>En iyi ilk rota<\/th>\n<th>Neden ilk s\u0131rada yer al\u0131yor?<\/th>\n<th>Ana g\u00f6zetleme noktas\u0131<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Poor metal wetting, crater sensitivity, or uneven first-contact laydown on steel or other metal panels<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/tr\/product\/agesin-wd-d547-wetting-agent\/\">CHLUMICRYL\u00ae WD-D547<\/a><\/td>\n<td>Longchang directly supports water-system surface-tension reduction plus wetting, spreading, anti-cratering, recoating, and leveling<\/td>\n<td>Transparency in varnish scores lower on the product page, so appearance-sensitive clear systems should still be screened carefully<\/td>\n<\/tr>\n<tr>\n<td>The primer reaches the metal but still breaks into crater, fisheye, or pullback behavior that looks compatibility-led<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/tr\/product\/chlumiag3467-silicone-leveling-agents\/\">CHLUMIAG\u00ae 3467<\/a><\/td>\n<td>The supported route keeps together compatibility-first logic, anti-cratering, leveling, and substrate wetting<\/td>\n<td>Longchang notes that this route prioritizes compatibility more than refined feel<\/td>\n<\/tr>\n<tr>\n<td>The primer already forms directionally, but trapped air still creates microbubbles or pinholes before topcoat<\/td>\n<td><a href=\"https:\/\/longchangchemical.com\/tr\/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 supported co-solvent plus high-shear route matters<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When CHLUMICRYL\u00ae WD-D547 is the better first move<\/h2>\n<p><strong>WD-D547<\/strong> should move first when the waterborne DTM primer still looks like a <strong>metal-entry problem<\/strong>. This is the stronger opening route when the primer hesitates on the panel, spreads unevenly, or keeps showing crater-sensitive behavior that begins right at the interface.<\/p>\n<p>That distinction matters because a DTM primer often has to establish a clean first film on metal before the next coating step can be judged honestly. If the coating still is not reaching the panel in a stable way, later compatibility or bubble-control routes can be harder to read.<\/p>\n<ul>\n<li><strong>En iyi ilk ekran kullan\u0131m\u0131:<\/strong> metal-surface wetting, spreading, and anti-cratering<\/li>\n<li><strong>Desteklenen dozaj:<\/strong> 0,1% ila 0,5%<\/li>\n<li><strong>Ba\u015fl\u0131ca g\u00fc\u00e7l\u00fc y\u00f6n\u00fc:<\/strong> one route that already combines water-system surface-tension reduction with wetting, spreading, anti-cratering, recoating, defoaming, and leveling support<\/li>\n<li><strong>Ba\u015fl\u0131ca uyar\u0131:<\/strong> the product page\u2019s varnish-transparency score is not the strongest, so clear appearance-sensitive systems still need panel testing<\/li>\n<\/ul>\n<p>In short, WD-D547 is the better first move when the DTM primer still needs a cleaner <strong>metal-contact benchmark<\/strong> before the formulator decides whether the real problem is broader compatibility or air release.<\/p>\n<h2>CHLUMIAG\u00ae 3467&#039;nin ilk tercih olarak daha iyi oldu\u011fu durumlar<\/h2>\n<p><strong>3467<\/strong> should move ahead first when the primer can already reach the metal but still shows <strong>craters<\/strong>, <strong>fisheyes<\/strong>, <strong>pullback<\/strong>, or other signs that the bottleneck is a <strong>compatibility-first leveling problem<\/strong>. This route is stronger when the issue is not just poor wetting, but unstable film formation after application begins.<\/p>\n<p>That matters in waterborne DTM primers because the primer layer often decides whether the team later is reading a true topcoat problem or just an inherited primer instability. 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>krater kar\u015f\u0131t\u0131<\/strong>, <strong>y\u00fczey \u0131slatma<\/strong>, ve <strong>system-compatibility logic<\/strong>.<\/p>\n<ul>\n<li><strong>En iyi ilk ekran kullan\u0131m\u0131:<\/strong> crater-sensitive and compatibility-led primer 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>Ba\u015fl\u0131ca g\u00fc\u00e7l\u00fc y\u00f6n\u00fc:<\/strong> one route that already combines anti-cratering, wetting, and compatibility-first logic<\/li>\n<li><strong>Ba\u015fl\u0131ca uyar\u0131:<\/strong> Longchang says this route prioritizes compatibility, so it is best screened when stability matters more than refined feel<\/li>\n<\/ul>\n<p>So 3467 is the better first move when the DTM primer still needs a <strong>compatibility-first cleanup route<\/strong> before the project moves into topcoat or broader anti-corrosion evaluation.<\/p>\n<h2>CHLUMICRYL\u00ae DF-D9904BR daha iyi bir ilk ad\u0131m oldu\u011funda<\/h2>\n<p><strong>DF-D9904BR<\/strong> should move ahead first when the waterborne DTM primer is losing the fight to <strong>microbubbles, foam carry-through, or pinholes<\/strong>. In those cases, better wetting or broader compatibility 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>mikro kabarc\u0131klar ve i\u011fne delikleri<\/strong> in the coating film of water-based coatings and inks, and it carries a process note that matters commercially: the product should enter through a <strong>co-solvent step<\/strong> and be added under <strong>y\u00fcksek kesme<\/strong> rather than treated as a late shortcut.<\/p>\n<ul>\n<li><strong>En iyi ilk ekran kullan\u0131m\u0131:<\/strong> persistent microbubbles and pinholes in waterborne DTM primers<\/li>\n<li><strong>Dozaj k\u0131lavuzu:<\/strong> Toplam form\u00fclasyonun 0,1% ila 1,0%&#039;si<\/li>\n<li><strong>Haz\u0131rl\u0131k kural\u0131:<\/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 metal wetting or compatibility-first crater cleanup<\/li>\n<\/ul>\n<p>This is the stronger first move when the visible primer defect is being limited by <strong>air management<\/strong>, not by a missing wetting route or a broader anti-cratering route.<\/p>\n<h2>Al\u0131c\u0131lar numune talep etmeden \u00f6nce nas\u0131l se\u00e7im yapmal\u0131d\u0131r?<\/h2>\n<h3>1. Start with the real first failure on metal<\/h3>\n<p>If the film still struggles to wet the panel and keep a stable first-contact laydown, start with WD-D547. If the primer reaches the panel but then breaks into crater or fisheye behavior, move 3467 forward. If the layer already forms but trapped air still is corrupting the film read, start with DF-D9904BR.<\/p>\n<h3>2. Keep interface wetting separate from compatibility cleanup<\/h3>\n<p>A primer that will not wet metal and a primer that wets but then pulls back are not the same additive problem. Separating those routes early usually makes the first trial set more honest.<\/p>\n<h3>3. Keep air-release control separate from both surface routes<\/h3>\n<p>Microbubble and pinhole control are not just smaller versions of wetting rescue or crater rescue. If trapped air is still sitting in the primer film, it can distort how the team reads every later additive.<\/p>\n<h3>4. Respect the watchpoints on each route<\/h3>\n<p>WD-D547 is the strongest first screen when metal wetting and anti-cratering belong together. 3467 prioritizes compatibility more than feel. DF-D9904BR should not be treated as a late after-add shortcut. Those watchpoints are part of the selection logic, not a footnote.<\/p>\n<h3>5. Keep the first trial set small<\/h3>\n<p>For many waterborne DTM primer projects, the cleanest first plan is one <strong>WD-D547 wetting route<\/strong>, bir <strong>3467 compatibility route<\/strong>ve bir <strong>DF-D9904BR bubble-control route<\/strong>. That usually teaches more than forcing several near-neighbor additives into the same first screen.<\/p>\n<h2>Bu sayfadan Longchan g\u00fczergah\u0131 \u00f6nerisi.<\/h2>\n<ul>\n<li><strong>Metal-wetting route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/product\/agesin-wd-d547-wetting-agent\/\">CHLUMICRYL\u00ae WD-D547<\/a><\/li>\n<li><strong>Uyumlulu\u011fu \u00f6nceliklendiren yol:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/product\/chlumiag3467-silicone-leveling-agents\/\">CHLUMIAG\u00ae 3467<\/a><\/li>\n<li><strong>Bubble-control route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a><\/li>\n<li><strong>K\u00fcme genel bak\u0131\u015f\u0131:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/chlumicryl-coating-ink-additives\/\">CHLUMICRYL\u00ae Kaplama ve M\u00fcrekkep Katk\u0131lar\u0131<\/a><\/li>\n<li><strong>Related stage page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/waterborne-primer-additives\/\">How to Choose Additives for Waterborne Primers<\/a><\/li>\n<li><strong>Related substrate page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/waterborne-direct-to-metal-additives\/\">How to Choose Additives for Waterborne Direct-to-Metal Coatings<\/a><\/li>\n<li><strong>Related cluster page:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/anti-corrosion-coating-additives\/\">Korozyon \u00d6nleyici Kaplamalar \u0130\u00e7in Katk\u0131 Maddeleri Nas\u0131l Se\u00e7ilir?<\/a><\/li>\n<li><strong>\u0130lgili hata sayfas\u0131:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/coating-fisheye-additive-selection\/\">How to Choose Additives for Coating Fisheyes<\/a><\/li>\n<li><strong>\u0130lgili hata sayfas\u0131:<\/strong> <a href=\"https:\/\/longchangchemical.com\/tr\/coating-pinhole-additive-selection\/\">How to Choose Additives for Coating Pinholes<\/a><\/li>\n<\/ul>\n<h2>SSS<\/h2>\n<h3>Which additive should I screen first if a waterborne DTM primer still will not wet metal evenly?<\/h3>\n<p>Usually WD-D547, because Longchang directly supports it around water-system surface-tension reduction, wetting, spreading, and anti-cratering, which match the first-contact metal problem more directly than a compatibility-only or bubble-only route.<\/p>\n<h3>When should 3467 move ahead of WD-D547?<\/h3>\n<p>3467 should move ahead when the primer already reaches the metal but still shows crater-sensitive breakup, fisheyes, or pullback that read more like a compatibility and leveling problem than a simple wetting shortfall.<\/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 incorporation route.<\/p>\n<h3>Is this page the same as the broader waterborne direct-to-metal coatings page?<\/h3>\n<p>No. The broader DTM page still answers the substrate-level selection question first. This new page is narrower and helps primer-stage buyers decide whether the first problem is metal wetting and anti-cratering, compatibility-first film stability, or water-based air release before topcoat.<\/p>\n<h2>Sonraki ad\u0131m<\/h2>\n<p>If your waterborne direct-to-metal primer project is stuck between <strong>poor metal wetting<\/strong>, <strong>crater-sensitive film instability<\/strong>, ve <strong>microbubble carry-through<\/strong>, stop treating them as the same additive request. Start with the real bottleneck first. 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 direct-to-metal primers, separating metal-surface wetting and anti-cratering, compatibility-first film cleanup, and water-based microbubble control before topcoat.<\/p>","protected":false},"author":6,"featured_media":10905,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10904","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 Direct-to-Metal Primer Additives | Wetting, Anti-Cratering, and Bubble Control<\/title>\n<meta name=\"description\" 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