Lead‑Free Mixed Metal Replacement Drier Blend for Alkyd with Co‑Ca System is ready‑to‑use lead‑free multi‑metal drier blend based on cobalt‑calcium carboxylate system. It is developed as direct substitute for conventional lead‑containing drier products. Cobalt provides primary surface drying activity, calcium optimizes gloss, film stability and cross‑linking performance. Without lead heavy‑metal component, it complies with global environmental standards. It can be further compounded with zirconi

Product Detail

Product Overview

Lead‑Free Mixed Metal Replacement Drier Blend for Alkyd with Co‑Ca System belongs to environmental‑friendly pre‑formulated composite drier for air‑drying alkyd coating systems. Traditional lead‑based driers are restricted by increasingly strict environmental regulations. This product adopts cobalt‑calcium mixed‑metal formula to realize lead‑free replacement. Cobalt acts as primary surface drier to accelerate oxidative cross‑linking on paint film surface. Calcium improves gloss development and inhibits abnormal brittleness of cured film. This base blend can cooperate with zirconium, zinc to enhance through‑curing and anti‑skinning performance. It dissolves completely in aliphatic and aromatic hydrocarbon solvents, shows excellent compatibility with long‑oil and medium‑oil alkyd resins, maintains stable storage property and consistent batch‑to‑batch quality.

Key Features

‑ Lead‑free heavy‑metal‑free mixed‑metal drier based on Co‑Ca system ‑ Designed as direct replacement for traditional lead‑containing alkyd driers ‑ Stable surface drying performance and good gloss development of alkyd film ‑ Complies with international environmental requirements for coating raw materials ‑ Flexible formula, can be compounded with Zr, Zn for enhanced through‑curing and anti‑skinning ‑ Good solubility in mineral spirits, xylene and conventional coating hydrocarbon solvents ‑ Wide compatibility for decorative and general industrial solvent‑borne alkyd resins ‑ Reliable batch‑to‑batch consistency for mass‑production of environment‑friendly alkyd paints

Technical Specifications

‑ Product Name: Lead‑Free Mixed Metal Replacement Drier Blend ‑ Active Metal: Cobalt, Calcium ‑ CAS No.: 136‑52‑7 ‑ Appearance: Purple‑reddish transparent liquid ‑ Solubility: Soluble in aliphatic, aromatic hydrocarbon solvents and alkyd resins, insoluble in water ‑ Density: 0.93‑0.99 g/cm³ @25℃ ‑ Viscosity: Low‑viscosity liquid ‑ Flash Point: ≥60℃ ‑ Moisture: ≤0.2%

Application Scenarios

‑ Environment‑friendly decorative solvent‑borne alkyd architectural coatings ‑ General industrial air‑drying alkyd enamels requiring lead‑free compliance ‑ Long‑oil and medium‑oil alkyd varnish and pigmented coating formulations ‑ Alkyd production lines phasing‑out traditional lead‑containing driers ‑ Base composite drier matched with Zr, Zn auxiliary driers for full curing system

Usage Recommendation

‑ Typical dosage: 0.20%‑0.55% calculated on total paint weight based on total metal content ‑ Add under low‑speed mixing during pigment letdown stage ‑ Do not add during high‑temperature resin synthesis procedure ‑ Supplement zirconium or zinc drier if stronger through‑curing or anti‑skinning is needed ‑ Anti‑skin agent shall be added separately according to closed‑can storage requirement ‑ Adjust dosage according to surface‑dry time, through‑curing and film property test results ‑ Complete full‑set laboratory compatibility 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 open flame ‑ 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.