Waterborne Co‑Zr Drier for Waterborne Epoxy Ester Alkyd System
Waterborne Co‑Zr Drier is hydrophilic‑modified cobalt‑zirconium composite drier for waterborne epoxy ester alkyd resin systems. Epoxy ester alkyd owns excellent adhesion and anti‑corrosion property, yet it is easy to suffer incomplete deep‑film curing with ordinary waterborne driers. Cobalt component brings rapid surface oxidative cross‑linking. Zirconium strengthens through‑drying, film hardness and substrate adhesion, and reduces pigment‑caused drier adsorption loss. Hydrophilic modification e
Product Overview
Waterborne Co‑Zr Drier belongs to hydrophilic‑modified cobalt‑zirconium composite drier, customized for oxidative‑cure waterborne epoxy ester alkyd systems. Epoxy ester alkyd combines epoxy adhesion performance and alkyd oxidative curing characteristics. Conventional single‑component waterborne driers frequently cause mismatched surface‑through drying speed, insufficient hardness and poor adhesion on metal substrates. This product integrates cobalt primary drier and zirconium auxiliary through drier in one formula. Cobalt catalyzes fast surface‑drying reaction. Zirconium promotes deep‑layer oxidative cross‑linking, optimizes hardness growth and interfacial bonding force between coating and metal substrate. Hydrophilic modification technology achieves stable water dispersibility and prevents hydrolysis‑induced activity drop. It shows good compatibility with various waterborne epoxy ester alkyd grades and maintains stable batch‑to‑batch quality.
Key Features
‑ Pre‑blended Co‑Zr composite drier tailored for waterborne epoxy ester alkyd systems ‑ Cobalt offers fast surface‑drying; zirconium enhances through‑drying, film hardness and substrate adhesion ‑ Solves typical defects of epoxy‑ester alkyd: mismatched drying rhythm and insufficient metal‑surface adhesion ‑ Good water dispersibility and anti‑hydrolysis stability, keeps catalytic activity in aqueous epoxy‑ester matrix ‑ Reduces drier adsorption loss induced by anti‑corrosion pigments, stabilizes curing performance in pigment‑rich primers ‑ Simplifies formula operation as one‑pack composite drier, no need for separate weighing cobalt and zirconium ‑ Compatible with anti‑corrosion pigments, fillers and waterborne epoxy ester alkyd binders ‑ Reliable batch‑to‑batch consistency for mass‑production of waterborne epoxy‑ester alkyd anti‑corrosion coatings
Technical Specifications
‑ Product Name: Waterborne Co‑Zr Drier ‑ Active Component: Hydrophilic‑modified Cobalt‑Zirconium carboxylate composite ‑ Appearance: Reddish‑brown transparent liquid ‑ Solubility: Water‑dispersible, miscible with waterborne epoxy ester alkyd resin ‑ Density: 0.99‑1.07 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.3%
Application Scenarios
‑ Waterborne epoxy‑ester alkyd anti‑rust primers and anti‑corrosion protective enamels ‑ Industrial air‑dry waterborne epoxy ester alkyd decorative topcoats for metal substrates ‑ Oxidative‑cure waterborne epoxy ester alkyd formulations with unbalanced surface‑through drying ‑ Metal‑coating projects requiring high film hardness and excellent substrate adhesion ‑ One‑pack composite drier for waterborne epoxy ester alkyd oxidative curing system
Usage Recommendation
‑ Typical dosage: 0.20%‑0.55% 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 ‑ Complete pre‑test for drying speed, through‑dry performance, hardness, adhesion and storage stability under real‑formula conditions ‑ Excessive dosage will increase skinning and yellowing risk; 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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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.
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