{"id":10512,"date":"2026-07-09T00:00:06","date_gmt":"2026-07-09T00:00:06","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10512"},"modified":"2026-07-09T16:07:38","modified_gmt":"2026-07-09T16:07:38","slug":"d980-vs-d9904br-vs-d912r","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/ko\/d980-vs-d9904br-vs-d912r\/","title":{"rendered":"DF-D980 vs DF-D9904BR vs D912R: Which Defoamer Fits Solvent-Based, Water-Based, or Varnish-Sensitive Systems?"},"content":{"rendered":"<p><strong>\ube60\ub978 \ub2f5\ubcc0:<\/strong> \uad6c\ub9e4\uc790 \ube44\uad50 <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d980-defoamer\/\">CHLUMICRYL\u00ae DF-D980<\/a>, <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a>, \uadf8\ub9ac\uace0 <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d912r-defoamer\/\">D912R<\/a> usually get a faster shortlist when they stop treating every defoamer as the same foam-killing tool. <strong>DF-D980<\/strong> should move first when the project is already in a <strong>solvent-based or UV-curable system<\/strong> and wants strong foam inhibition and defoaming, but can accept the clear limitation that it is <strong>not applicable to varnish<\/strong>. <strong>DF-D9904BR<\/strong> deserves earlier review when the line is <strong>\uc218\uc131<\/strong> and the team needs a <strong>silica-free route for microbubbles and pinhole prevention<\/strong>, with enough process discipline to add it under <strong>high shear<\/strong> instead of throwing it in afterward. <strong>D912R<\/strong> belongs earlier when the buyer still works in a <strong>solvent-based system<\/strong> but cares more about <strong>\ubc14\ub2c8\uc2dc \ud638\ud658\uc131<\/strong>, <strong>surface-tension reduction<\/strong>, \uadf8\ub9ac\uace0 <strong>additional anti-cratering ability<\/strong> than about a broad heavy-duty defoamer route.<\/p>\n<p>That is the commercially useful split. The real decision is not only which product knocks down foam, but <strong>whether the formulation is water-based or solvent-side, whether varnish compatibility matters, and whether the lab is trying to solve macrofoam, microbubbles, or crater-linked surface instability<\/strong>.<\/p>\n<h2>\uc774 \ube44\uad50\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \ud398\uc774\uc9c0\uac00 \ud544\uc694\ud55c \uc774\uc720<\/h2>\n<p>Longchang already has a broader page for <a href=\"https:\/\/longchangchemical.com\/ko\/defoamers-coatings-inks\/\">how to choose defoamers for coatings and inks<\/a> and a wider diagnostic page for <a href=\"https:\/\/longchangchemical.com\/ko\/coating-defect-additive-selection\/\">\uacb0\ud568 \uae30\ubc18 \ucca8\uac00\uc81c \uc120\ud0dd<\/a>. Those pages help buyers decide whether the problem belongs in the defoamer lane at all.<\/p>\n<p>This page answers the narrower commercial question that comes after that: <strong>which specific defoamer route should be screened first when the system boundary, varnish sensitivity, microbubble risk, and addition method are not the same?<\/strong><\/p>\n<p>That narrower question is worth its own B2B page because coatings and inks teams often lose time when they compare a water-based microbubble-control product, a solvent\/UV heavy defoamer, and a varnish-friendly anti-cratering route as if they were interchangeable. They are not.<\/p>\n<h2>What buyers are usually trying to fix before they ask for a defoamer shortlist<\/h2>\n<p>In practical coatings and inks work, defoamer questions usually show up as one or more of these problems:<\/p>\n<ul>\n<li>persistent foam during grinding, letdown, circulation, or application<\/li>\n<li>microbubbles that survive into the wet film and print or cure through the surface<\/li>\n<li>pinhole or crater complaints that seem related to foam release or surface instability<\/li>\n<li>varnish or topcoat systems that need a lower-risk route for compatibility<\/li>\n<li>a water-based line that cannot use the same route as a solvent-based or UV-curable system<\/li>\n<\/ul>\n<p>That pattern also matches the broader external search language around defoamer selection, where buyers commonly separate <strong>\ud638\ud658\uc131<\/strong>, <strong>microbubble control<\/strong>, <strong>system type<\/strong>, \uadf8\ub9ac\uace0 <strong>surface-defect side effects<\/strong> instead of choosing only by the word defoamer.<\/p>\n<h2>Quick comparison table: DF-D980 vs DF-D9904BR vs D912R<\/h2>\n<table>\n<thead>\n<tr>\n<th>\uad6c\ub9e4 \uc694\uc778<\/th>\n<th>DF-D980<\/th>\n<th>DF-D9904BR<\/th>\n<th>D912R<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uc8fc\uc694 \uc9c0\uc6d0 \uc2dc\uc2a4\ud15c \ucc3d<\/td>\n<td>Solvent-based and UV-curable systems<\/td>\n<td>\ubb3c \uae30\ubc18 \uc2dc\uc2a4\ud15c<\/td>\n<td>\uc194\ubca4\ud2b8 \uae30\ubc18 \uc2dc\uc2a4\ud15c<\/td>\n<\/tr>\n<tr>\n<td>\ubb34\uc5c7\uc774 \uba3c\uc800 \uadf8\uac83\uc744 \uc55e\uc73c\ub85c \ub098\uc544\uac00\uac8c \ud558\ub294\uac00?<\/td>\n<td>Strong foam inhibition and defoaming in solvent or UV work<\/td>\n<td>Silica-free water-based route for microbubbles and pinhole prevention<\/td>\n<td>Better varnish compatibility plus extra anti-cratering support<\/td>\n<\/tr>\n<tr>\n<td>\uad8c\uc7a5 \ubcf5\uc6a9\ub7c9<\/td>\n<td>0.2% to 1.0%<\/td>\n<td>0.1% ~ 1.0%<\/td>\n<td>0.1% to 0.25%<\/td>\n<\/tr>\n<tr>\n<td>\ub367\uc148 \ub17c\ub9ac<\/td>\n<td>Add to the abrasive material<\/td>\n<td>Add under high shear, preferably through co-solvent then into abrasive, not afterward<\/td>\n<td>Add to the abrasive<\/td>\n<\/tr>\n<tr>\n<td>\uc8fc\uc694 \uac10\uc2dc \uc9c0\uc810<\/td>\n<td>Contains hydrophobic particles, diluted solution storage only 1 to 2 days, not applicable to varnish<\/td>\n<td>Needs high-shear addition and is not recommended to be added afterwards<\/td>\n<td>Active substance content is only 2%, so it should be treated as a narrower varnish-friendly route rather than a broad drop-in substitute<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>When DF-D980 is the better first screen<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d980-defoamer\/\">DF-D980<\/a> should move to the front when the real project is already inside a <strong>solvent-based or UV-curable system<\/strong> and the buyer wants a more direct defoaming benchmark before moving into narrower specialty routes. Longchang supports it as <strong>polysiloxane compounds with hydrophobic particles<\/strong> and places it in <strong>solvent-based, UV-curable systems<\/strong>. The company page gives a recommended dosage of <strong>0.2% to 1.0%<\/strong> of the total formula and says it should be added to the <strong>abrasive material<\/strong>.<\/p>\n<p>That makes D980 commercially useful when the lab wants a product clearly framed around <strong>foam inhibition and defoaming<\/strong> instead of a route that also tries to solve varnish compatibility or aqueous-system constraints.<\/p>\n<ul>\n<li><strong>\uac00\uc7a5 \uc801\ud569\ud55c \uc81c\ud488:<\/strong> solvent-based and UV-curable coatings or inks where the first job is strong foam control<\/li>\n<li><strong>\uc8fc\uc694 \uac15\uc810:<\/strong> direct heavy-duty defoaming positioning with a clear solvent\/UV boundary<\/li>\n<li><strong>\uc8fc\uc694 \uac10\uc2dc \uc9c0\uc810:<\/strong> Longchang explicitly says it is <strong>not applicable to varnish<\/strong>, and if it is diluted with solvent the diluted solution should be stored only <strong>1 to 2 days<\/strong><\/li>\n<\/ul>\n<p>Another practical note is storage behavior. Longchang states that because the product contains <strong>hydrophobic particles<\/strong>, precipitation may occur during storage, but stirring well before use does not affect product quality. That is a real process detail, not filler, and it matters when plant handling is less controlled.<\/p>\n<h2>When DF-D9904BR is the better first screen<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d9904br-defoamer\/\">DF-D9904BR<\/a> deserves earlier review when the buyer already knows the route must stay <strong>\uc218\uc131<\/strong> and the practical risk is more about <strong>microbubbles, pinholes, and compatibility inside a water-based coating or ink<\/strong>\ub871\ucc3d\uc740 \uc774\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc9c0\uc9c0\ud569\ub2c8\ub2e4. <strong>polyether modified polysiloxane compound, silica free<\/strong> ~\uc744 \uc704\ud55c <strong>\uc218\uacc4 \uc2dc\uc2a4\ud15c<\/strong>\uad8c\uc7a5 \ubcf5\uc6a9\ub7c9\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <strong>0.1% ~ 1.0%<\/strong>.<\/p>\n<p>The company page makes two things commercially important. First, it says DF-D9904BR has good defoaming properties to help prevent <strong>micro bubbles and pinholes<\/strong> in the coating film of <strong>water-based coatings and inks<\/strong>. Second, it says the product <strong>needs to be added under high shear<\/strong> and is <strong>not recommended to be added afterwards<\/strong>.<\/p>\n<ul>\n<li><strong>\uac00\uc7a5 \uc801\ud569\ud55c \uc81c\ud488:<\/strong> water-based coatings and inks where microbubble control and pinhole prevention matter as much as ordinary foam knockdown<\/li>\n<li><strong>\uc8fc\uc694 \uac15\uc810:<\/strong> clear water-based positioning and silica-free structure with practical microbubble framing<\/li>\n<li><strong>\uc8fc\uc694 \uac10\uc2dc \uc9c0\uc810:<\/strong> the addition method is stricter than a casual late-stage defoamer dose, so the process team needs to respect the high-shear addition route<\/li>\n<\/ul>\n<p>Longchang also recommends improving compatibility by adding the defoamer to the <strong>co-solvent first<\/strong>, then adding it to the abrasive under <strong>high speed stirring<\/strong> so it disperses evenly. That makes DF-D9904BR a cleaner first route when process discipline is available and the buyer wants to reduce both foam and pinhole-linked film defects in water-based work.<\/p>\n<h2>When D912R is the better first screen<\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d912r-defoamer\/\">D912R<\/a> should move earlier when the project still lives in a <strong>solvent-based system<\/strong> but the buying logic is not just about raw foam collapse. Longchang supports D912R as a <strong>fluorocarbon modified polysiloxane solution<\/strong> ~\uc5d0 <strong>\uc6a9\ub9e4 \uae30\ubc18 \uc2dc\uc2a4\ud15c<\/strong>, with a recommended dosage of only <strong>0.1% to 0.25%<\/strong>.<\/p>\n<p>What makes D912R commercially different is the combination of supported properties on the current company page:<\/p>\n<ul>\n<li><strong>better varnish compatibility<\/strong><\/li>\n<li><strong>excellent foam inhibition and defoaming properties<\/strong><\/li>\n<li>the ability to <strong>strongly reduce surface tension<\/strong><\/li>\n<li><strong>additional anti-cratering ability<\/strong><\/li>\n<\/ul>\n<p>That makes D912R more than a plain defoamer. It is a narrower solvent-side route for buyers who still need foam control but cannot ignore varnish behavior or crater-sensitive surface performance.<\/p>\n<ul>\n<li><strong>\uac00\uc7a5 \uc801\ud569\ud55c \uc81c\ud488:<\/strong> solvent-based coatings, inks, or varnish-related systems where foam control and surface-defect control need to be considered together<\/li>\n<li><strong>\uc8fc\uc694 \uac15\uc810:<\/strong> a more varnish-friendly route with extra anti-cratering support<\/li>\n<li><strong>\uc8fc\uc694 \uac10\uc2dc \uc9c0\uc810:<\/strong> with only <strong>2% active substance content<\/strong> on the current page, buyers should treat it as a more targeted route rather than assuming it replaces a broader defoamer benchmark everywhere<\/li>\n<\/ul>\n<p>In short, D912R belongs first when the team is solving a more sensitive <strong>surface-control problem with defoaming inside it<\/strong>, not simply chasing the strongest generic foam kill.<\/p>\n<h2>\uad6c\ub9e4\uc790\uac00 \uc0d8\ud50c\uc744 \uc694\uccad\ud558\uae30 \uc804\uc5d0 \uc120\ud0dd\ud574\uc57c \ud560 \uc0ac\ud56d<\/h2>\n<h3>1. Start with the system boundary, not the product name<\/h3>\n<p>If the line is water-based, DF-D9904BR is usually the cleaner first route because Longchang is explicit that it belongs in water-based systems. If the project is solvent-based or UV-curable and just wants a direct defoaming benchmark, DF-D980 often makes more sense. If solvent-side work also has varnish or crater sensitivity, D912R deserves earlier attention.<\/p>\n<h3>2. Separate macro defoaming from microbubble and surface-defect control<\/h3>\n<p>DF-D980 is easier to justify when the main problem is straightforward foam inhibition and defoaming. DF-D9904BR becomes more attractive when the buyer is actively trying to prevent <strong>microbubbles and pinholes<\/strong> in water-based work. D912R becomes more relevant when the surface discussion includes <strong>\ubc14\ub2c8\uc2dc \ud638\ud658\uc131<\/strong> \ubc0f <strong>\ubc18\ubd84\ud654\uad6c<\/strong>.<\/p>\n<h3>3. Respect the addition method<\/h3>\n<p>DF-D9904BR is not a casual add-later route. Longchang says it needs high-shear addition and is not recommended to be added afterwards. That process note alone can determine whether it is the right first sample for a given plant.<\/p>\n<h3>4. Keep varnish restrictions visible<\/h3>\n<p>D980 is explicitly <strong>not applicable to varnish<\/strong>. D912R is explicitly positioned with <strong>better varnish compatibility<\/strong>. That is not a small footnote. It is one of the cleanest reasons these two routes should not be treated as interchangeable.<\/p>\n<h3>5. \uccab \ubc88\uc9f8 \uc0d8\ud50c \ub77c\uc6b4\ub4dc\ub294 \uc9e7\uac8c \uc9c4\ud589\ud558\uc138\uc694.<\/h3>\n<p>\ub9ce\uc740 \uad6c\ub9e4\uc790\ub4e4\uc5d0\uac8c \uc788\uc5b4 \uac00\uc7a5 \uae54\ub054\ud55c 1\ucc28 \ub77c\uc6b4\ub4dc\ub294 \ubc14\ub85c \uc774\uac83\uc785\ub2c8\ub2e4. <strong>solvent or UV benchmark<\/strong>, \ud558\ub098 <strong>water-based microbubble route<\/strong>\uadf8\ub9ac\uace0 \ud558\ub098 <strong>varnish-sensitive solvent route<\/strong>. That often teaches more than screening a larger stack of overlapping defoamers all at once.<\/p>\n<h2>\uc774 \ud398\uc774\uc9c0\uc5d0\uc11c \ucd94\ucc9c\ud558\ub294 \ub871\ucc3d \ucf54\uc2a4<\/h2>\n<ul>\n<li><strong>\ub354 \uc790\uc138\ud55c \uae30\ub2a5 \ud398\uc774\uc9c0:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/defoamers-coatings-inks\/\">\ucf54\ud305 \ubc0f \uc789\ud06c\uc6a9 \uc18c\ud3ec\uc81c \uc120\ud0dd \ubc29\ubc95<\/a><\/li>\n<li><strong>\ud074\ub7ec\uc2a4\ud130 \uac1c\uc694:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/chlumicryl-coating-ink-additives\/\">\ud074\ub85c\ubbf8\ud06c\ub9b4\u00ae \ucf54\ud305 \ubc0f \uc789\ud06c \ucca8\uac00\uc81c<\/a><\/li>\n<li><strong>\uad00\ub828 \uacb0\ud568 \ud398\uc774\uc9c0:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/coating-defect-additive-selection\/\">\uc2b5\uc724 \ucca8\uac00\uc81c vs \ub808\ubca8\ub9c1 \ucca8\uac00\uc81c vs \uc18c\ud3ec\uc81c vs \ubd88\uc18c\uacc4 \uacc4\uba74\ud65c\uc131\uc81c<\/a><\/li>\n<li><strong>Solvent\/UV benchmark route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d980-defoamer\/\">CHLUMICRYL\u00ae DF-D980<\/a><\/li>\n<li><strong>Water-based microbubble route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d9904br-defoamer\/\">CHLUMICRYL\u00ae DF-D9904BR<\/a><\/li>\n<li><strong>Varnish-sensitive solvent route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/ko\/product\/agesin-we-d912r-defoamer\/\">D912R<\/a><\/li>\n<\/ul>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>Which product is the best first screen for water-based coatings and inks with microbubble or pinhole pressure?<\/h3>\n<p>Usually DF-D9904BR, because Longchang explicitly supports it in water-based systems and directly frames it around microbubble and pinhole prevention in water-based coatings and inks.<\/p>\n<h3>When should buyers start with D980 instead of D912R?<\/h3>\n<p>Start with D980 when the main goal is a direct solvent-based or UV-curable defoaming benchmark and varnish compatibility is not part of the first-screen requirement. D912R moves up when varnish compatibility and anti-cratering matter earlier.<\/p>\n<h3>Can D980 be used in varnish systems?<\/h3>\n<p>No. The current Longchang product page explicitly says D980 is not applicable to varnish.<\/p>\n<h3>Why is DF-D9904BR not a casual late-stage fix?<\/h3>\n<p>Because Longchang says it needs to be added under high shear and is not recommended to be added afterwards. Its process discipline is part of its selection logic.<\/p>\n<h3>What makes D912R different from a standard solvent-side defoamer?<\/h3>\n<p>The current company page combines foam inhibition and defoaming with better varnish compatibility, strong surface-tension reduction, and additional anti-cratering ability, which gives it a more specialized surface-control role.<\/p>\n<h2>Need a faster defoamer shortlist?<\/h2>\n<p>If your coatings or inks project is losing time between <strong>\uc2dc\uc2a4\ud15c \uc801\ud569\uc131<\/strong>, <strong>microbubble control<\/strong>, <strong>\ubc14\ub2c8\uc2dc \ud638\ud658\uc131<\/strong>, \uadf8\ub9ac\uace0 <strong>anti-cratering risk<\/strong>, do not compare DF-D980, DF-D9904BR, and D912R as if they solve the same first problem. Start by separating <strong>solvent or UV benchmark defoaming<\/strong>, <strong>water-based microbubble prevention<\/strong>, \uadf8\ub9ac\uace0 <strong>varnish-sensitive solvent-side control<\/strong>. That usually shows much faster which route deserves the first sample round.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical B2B defoamer comparison for coatings and inks buyers choosing between DF-D980, DF-D9904BR, and D912R by system boundary, varnish compatibility, microbubble control, addition method, and anti-cratering risk.<\/p>","protected":false},"author":6,"featured_media":10513,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10512","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>DF-D980 vs DF-D9904BR vs D912R for Coatings and Inks Defoamer Selection<\/title>\n<meta name=\"description\" content=\"Compare DF-D980, DF-D9904BR, and D912R for coatings 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