Waterborne Polymeric Cobalt Drier 2‑EHA‑Free REACH Low‑Label Water Alkyd
Waterborne Polymeric Cobalt Drier is hydrophilic modified polymeric cobalt drier free from 2‑ethylhexanoate, specially developed for water‑reducible alkyd coatings. Traditional waterborne cobalt driers containing 2‑EHA face strict EU regulatory restrictions. This product adopts special polymeric ligand structure to realize good water dispersibility and anti‑hydrolysis stability without 2‑EHA ingredients, achieving REACH‑compliant low‑label status. It acts as primary drier to initiate oxidative c
Product Overview
Waterborne Polymeric Cobalt Drier belongs to 2‑EHA‑free water‑dispersible polymeric cobalt primary drier for oxidative‑cure water‑reducible alkyd coatings. Conventional waterborne cobalt driers based on 2‑ethylhexanoate trigger strict REACH CLP labelling obligations for paint manufacturers. This drier uses hydrophilic polymeric cobalt complex technology, removes 2‑EHA raw‑material source, maintains catalytic surface‑drying activity, and gains stable dispersibility in aqueous coating environment with improved hydrolysis resistance. As primary drier, it accelerates surface oxidation reaction of alkyd unsaturated chains, cannot be used alone. It must cooperate with matched waterborne auxiliary driers to improve inner‑layer curing, final hardness and closed‑can storage stability. It features excellent compatibility with medium‑oil and long‑oil water‑reducible alkyd resins and keeps consistent batch‑to‑batch quality.
Key Features
‑ 2‑EHA‑free water‑dispersible polymeric cobalt primary drier for water‑reducible alkyd ‑ REACH‑compliant formula, achieves low‑label classification for EU export projects ‑ Hydrophilic polymeric modification brings outstanding water dispersibility and anti‑hydrolysis property ‑ Reliable oxidative surface‑drying catalytic activity without 2‑ethylhexanoate‑related risks ‑ Easy incorporation under low‑speed stirring, no special high‑shear dispersion required ‑ Compatible with waterborne zirconium, calcium auxiliary driers to form balanced drier system ‑ Works for decorative architectural and industrial water‑dilutable alkyd coating systems ‑ Reliable batch‑to‑batch consistency for mass‑production of REACH‑compliant water‑borne alkyd paints
Technical Specifications
‑ Product Name: Waterborne Polymeric Cobalt Drier ‑ Active Component: Hydrophilic polymeric cobalt complex ‑ Cobalt Content: 6% min ‑ Appearance: Blue‑purple transparent liquid ‑ Solubility: Water‑dispersible, miscible with water‑reducible alkyd resins ‑ Density: 0.97‑1.03 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.3%
Application Scenarios
‑ REACH‑compliant water‑reducible alkyd decorative coating systems ‑ Industrial air‑dry water‑dilutable alkyd enamels and varnishes ‑ Water‑based alkyd hybrid formulations restricted from 2‑EHA substances ‑ Coating products exporting to European market pursuing low‑label status ‑ Primary drier component cooperating with waterborne Zr, Ca auxiliary driers for complete curing system
Usage Recommendation
‑ Typical dosage: 0.12%‑0.42% calculated on total paint weight ‑ Add under low‑speed stirring during paint letdown stage, avoid fierce high‑shear agitation ‑ Do not add during high‑temperature resin synthesis procedure ‑ Must combine with water‑compatible auxiliary driers to enhance through‑curing and film mechanical properties ‑ Run pre‑tests for dispersion stability, drying speed and anti‑skinning performance under real‑formula conditions ‑ Excessive dosage will increase skinning and yellowing risk; 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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