{"id":10849,"date":"2026-07-25T00:00:05","date_gmt":"2026-07-25T00:00:05","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10849"},"modified":"2026-08-09T10:29:04","modified_gmt":"2026-08-09T10:29:04","slug":"waterborne-plastic-basecoat-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/id\/waterborne-plastic-basecoat-additives\/","title":{"rendered":"Aditif Lapisan Dasar Plastik Berbasis Air: Pembasahan & Pelapisan Ulang"},"content":{"rendered":"

Waterborne plastic basecoat additives should be selected by the first failed stage: substrate wetting, retained process air or flow before clearcoat.<\/strong> WD-D545 is the documented waterborne-plastic-paint wetting route. DF-D9904BR is the high-shear waterborne defoamer route. CHLUMIAG\u00ae 3467 is a conditional compatibility\/flow route whose hydroxyl and recoat effects require binder-specific testing.<\/p>\n

CHLUMIWE\u00ae 3071 and CHLUMIFE\u00ae 3166 are removed from the first shortlist here. The 3071 page warns of foam stabilization in waterborne systems; 3166 warns of pinholes, whitening and foam stabilization. Those risks can obscure the basecoat failure being diagnosed.<\/p>\n

Waterborne plastic basecoat decision map<\/h2>\n
\n\n\n\n\n\n\n\n\n
Observed failure<\/th>\nFirst evidence check<\/th>\nRoute if confirmed<\/th>\n<\/tr>\n<\/thead>\n
Basecoat beads, retracts or leaves low-coverage areas immediately<\/td>\nPlastic grade, mold release, cleaning, treatment and wet-film behavior<\/td>\nWD-D545<\/td>\n<\/tr>\n
Microfoam follows dispersion, pumping, recirculation or spray<\/td>\nFoam generation\/decay, density and cured pinholes<\/td>\nDF-D9904BR at validated high-shear stage<\/td>\n<\/tr>\n
Surface is wetted but flow, mottling or resin compatibility remains uneven<\/td>\nBinder\/crosslinker chemistry, flash and clearcoat window<\/td>\n3467 compact compatibility ladder<\/td>\n<\/tr>\n
Failure follows one molded lot or treatment age<\/td>\nCorrect substrate\/process variation<\/td>\nNo additive escalation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>
Original waterborne-basecoat map: separate plastic entry, process air and pre-clearcoat flow before changing surface chemistry.<\/figcaption><\/figure>\n\n\n\n\n\n\n\n
Produk<\/th>\nPublished fit<\/th>\nStarting guidance<\/th>\nBatas<\/th>\n<\/tr>\n<\/thead>\n
WD-D545<\/strong><\/a><\/td>\n100%-active polyether-modified siloxane; waterborne wood, industrial and plastic paint<\/td>\n0.1\u20130.5% total; any stage including post-addition<\/td>\nPublished defoaming rating is 0; not an air-release solution<\/td>\n<\/tr>\n
DF-D9904BR<\/strong><\/a><\/td>\n30%-active, silica-free waterborne defoamer<\/td>\n0.1\u20131.0% total; combine with co-solvent and disperse under high shear<\/td>\nNot recommended as an indiscriminate late post-addition<\/td>\n<\/tr>\n
3467<\/strong><\/a><\/td>\n100% active; water\/solvent\/UV; compatibility-prioritized wetting\/leveling; OH value \u226485<\/td>\nWaterborne public range 0.5\u20135% total<\/td>\nBroad range and reactive chemistry require binder, cure and recoat checks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Control plastic and application variables first<\/h2>\n

Record polymer family and grade, recycled content, fillers, mold-release chemistry, cleaning, treatment method and time since treatment. Compare a known-good part with the failing lot. A wetting additive cannot remove silicone contamination, restore decayed treatment or make an incompatible resin adhere.<\/p>\n

Hold spray viscosity, pH, solids, temperature, atomization, gun distance, wet-film build, flash humidity and oven schedule. Basecoat orientation, color travel and mottling can change with evaporation and spray pattern even when surface chemistry is unchanged.<\/p>\n

Use WD-D545 for confirmed substrate entry<\/h2>\n

WD-D545 specifically lists waterborne plastic paint and publishes a 0.1\u20130.5% total-formula range. Its page reports strong dynamic\/static surface-tension performance but zero defoaming and zero slip ratings. That makes it a focused wetting screen rather than a multifunction claim.<\/p>\n

Start low and measure coverage, edge pullback, craters, leveling, metallic orientation where relevant, color, gloss\/haze, adhesion and clearcoat recoat. If wetting improves but aged adhesion fails, return to pretreatment, binder, flash and cure.<\/p>\n

Use DF-D9904BR for retained air<\/h2>\n

DF-D9904BR is 30% active in DPM and is designed for water-based systems. Its page says to combine it with co-solvent and add it to the abrasive\/grind under high shear; late addition is not recommended. Prepare it correctly before deciding that it is ineffective.<\/p>\n

Track foam height and decay, batch density, spray microfoam, cured pinholes, color, gloss and adhesion. Excess or incompatible defoamer can produce craters, haze or intercoat weakness, so choose the lowest passing level.<\/p>\n

Use 3467 only after binder and recoat review<\/h2>\n

3467 supports waterborne use and prioritizes compatibility, but its public range of 0.5\u20135% is broad. It is also described as hydroxyl-functional and reactive with isocyanate. If the basecoat or clearcoat system includes NCO chemistry, verify whether the additive enters the reaction balance and whether its hydroxyl value is represented correctly.<\/p>\n

Screen a compact internally justified ladder. Test it alone before combinations because the page says to avoid mixing with other additives. Approve only if color, flash, adhesion, clearcoat appearance and storage all remain acceptable.<\/p>\n

Run a basecoat-to-clearcoat trial<\/h2>\n
    \n
  1. Lock the molded plastic lot, cleaning and pretreatment.<\/li>\n
  2. Hold addition order, shear, pH, solids, viscosity and hold time.<\/li>\n
  3. Spray the production geometry at low, target and high film build.<\/li>\n
  4. Flash under low, nominal and high humidity\/temperature limits.<\/li>\n
  5. Clearcoat at minimum, target and extended recoat intervals.<\/li>\n
  6. Age panels before adhesion, water\/chemical and appearance decisions.<\/li>\n<\/ol>\n

    Measure the complete layered system<\/h2>\n

    ASTM D823<\/a> describes practices for producing uniform coating films on test panels. ASTM D1308<\/a> covers effects of household chemicals on clear and pigmented organic finishes; choose exposures that match the customer specification.<\/p>\n

    Record wetting, pinholes, mottling, color and effect orientation, basecoat cohesion, clearcoat appearance, intercoat adhesion, water\/chemical resistance, flexibility and blocking. A smooth basecoat that disrupts color or clearcoat adhesion is not a passing result.<\/p>\n

    Age the liquid basecoat at the customer\u2019s low, room and elevated storage conditions, then return it to the defined test temperature before measuring pH, viscosity, foam, color and spray behavior. This separates reversible temperature effects from permanent incompatibility or additive migration.<\/p>\n

    Request a basecoat-specific shortlist<\/h2>\n

    Send plastic grade, molded geometry, cleaning\/treatment, resin and crosslinker, pigments\/effect pigments, pH\/solids, current additives, shear, spray and flash window, clearcoat chemistry, recoat interval, defect photos and aged adhesion results. Ask Longchang Chemical to compare WD-D545, DF-D9904BR and 3467 for the measured basecoat failure<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    A practical CHLUMICRYL\u00ae buyer guide for waterborne plastic basecoats that separates difficult-substrate wetting, compatibility-first crater cleanup, and final laydown or recoat-readiness before clearcoat.<\/p>","protected":false},"author":6,"featured_media":10850,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nWaterborne Plastic Basecoat Additives: Wetting & Recoat<\/title>\n<meta name=\"description\" content=\"Choose waterborne plastic basecoat additives by substrate wetting, process air and flow while protecting color, adhesion, clearcoat recoat and storage.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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