Waterborne Bi‑Zn Drier is water‑dispersible bismuth‑zinc composite drier tailored for PU‑modified alkyd polyurethane oxidative resin systems. Bismuth promotes curing reaction of hybrid resin segments, zinc effectively suppresses paint‑container skinning and stabilizes storage performance. Hydrophilic modification grants stable dispersion in aqueous PU‑alkyd matrix without destroying hybrid emulsion stability. It complements primary driers to enhance film flexibility, impact resistance and surfac

Product Detail

Product Overview

Waterborne Bi‑Zn Drier belongs to hydrophilic‑modified bismuth‑zinc composite auxiliary drier for oxidative‑cure PU‑modified alkyd polyurethane hybrid systems. PU‑modified alkyd resins introduce polyurethane soft segments, bringing better flexibility meanwhile raising higher requirements for drier compatibility. Conventional waterborne driers may cause poor storage stability, easy skinning and insufficient film flexibility for PU‑alkyd hybrid paints. This product adopts optimized bismuth‑zinc carboxylate composite formula with hydrophilic modification technology. Bismuth accelerates oxidative cross‑linking of unsaturated alkyd chains within hybrid resin. Zinc component delivers prominent anti‑skinning effect and extends paint shelf life. It disperses uniformly in aqueous PU‑modified alkyd system and will not trigger emulsion demulsification or particle aggregation. It needs compounding with primary driers and cannot work independently. It shows good compatibility with different grades of PU‑modified alkyd resins and maintains stable batch‑to‑batch quality.

Key Features

‑ Hydrophilic‑modified Bi‑Zn composite auxiliary drier for PU‑modified alkyd polyurethane oxidative systems ‑ Bismuth boosts curing response of hybrid resin; zinc provides excellent anti‑skinning performance for finished paint ‑ Improves cured film flexibility and impact resistance, matches the soft‑hard property of PU‑alkyd hybrid resin ‑ Stable water dispersibility, no demulsification or flocculation after incorporation into PU‑modified alkyd emulsion ‑ Reduces storage failure risk caused by early skinning inside paint containers ‑ Synergizes perfectly with cobalt or manganese primary driers to construct complete curing system ‑ Compatible with various pigments, fillers and PU‑modified alkyd hybrid binders ‑ Reliable batch‑to‑batch consistency for mass‑production of waterborne PU‑alkyd hybrid coatings

Technical Specifications

‑ Product Name: Waterborne Bi‑Zn Drier ‑ Active Component: Hydrophilic‑modified Bismuth‑Zinc carboxylate composite ‑ Appearance: Pale brown transparent liquid ‑ Solubility: Water‑dispersible, miscible with PU‑modified alkyd polyurethane oxidative resin ‑ Density: 0.98‑1.06 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.3%

Application Scenarios

‑ Waterborne PU‑modified alkyd decorative paints and hybrid varnishes ‑ Industrial air‑dry water‑based polyurethane oxidative protective topcoats ‑ Oxidative‑cure PU‑modified alkyd hybrid formulations troubled by container skinning ‑ Hybrid resin coating projects requiring improved film flexibility and storage stability ‑ Auxiliary composite drier cooperating with cobalt or manganese primary driers

Usage Recommendation

‑ Typical dosage: 0.15%‑0.50% calculated on total paint weight ‑ Add slowly under low‑speed stirring during paint letdown stage, avoid high‑shear violent agitation ‑ Do not add during high‑temperature resin synthesis procedure ‑ Must combine with primary drier such as cobalt or manganese, cannot be used alone ‑ Complete pre‑test for drying performance, anti‑skinning property, film flexibility and emulsion storage stability under real‑formula conditions ‑ Excessive dosage may affect surface gloss; strictly control addition amount ‑ Complete full‑set laboratory assessment before mass‑scale production

Package & Storage

‑ Standard package: 25kg / 200kg metal drum ‑ Store in cool, dry and well‑ventilated warehouse, keep away from heat source and direct sunlight ‑ Tightly seal container after opening to prevent solvent volatilization and performance deterioration ‑ Shelf life: 12 months under proper storage conditions

Safety Notes

‑ Combustible liquid, keep away from all ignition sources. ‑ Avoid skin contact and eye splash. Wear chemical‑resistant gloves and safety goggles during handling. ‑ Avoid inhalation of vapor and mist, ensure effective local ventilation. ‑ Refer to SDS for full guidance on handling, transportation and emergency disposal.

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.