Water-Based Saturated Polyester Resin | High-Performance Binder for Amino Baking Enamel

Water-based Saturated Polyester Resin WL-181

WL-181 revolutionizes industrial coatings as an eco-conscious, oil-free aqueous resin. Engineered for versatility, its unique hydroxyl and amine crosslinking chemistry forms ultra-smooth, glass-like films that serve flawlessly as primer, topcoat, or protective overcoat varnish. Designed specifically for metal substrates, it combines laboratory-grade performance with effortless application.

Key Features‌

✅ ‌Uncompromising Durability‌

Achieves pencil hardness ‌>4H‌ and withstands ‌100+ MEK solvent rubs‌

Maintains ‌gloss retention‌ with ‌zero yellowing‌ over time

✅ ‌Eco-Safe Formulation‌

‌Low VOC‌ (<50 g/L) and ‌negligible odor‌

‌High solid content (75±2)%‌ reduces overspray waste

✅ ‌Adaptable Application‌

Applies smoothly via ‌spray, roller, or brush‌

Bonds strongly to metals ‌without pre-treatment‌

✅ ‌Aesthetic Excellence‌

Self-leveling formula creates ‌mirror-like finishes‌

Ideal for curved surfaces and intricate geometries

‌Recommended Applications

‌

‌Automotive‌: Wheel rims, engine components, and decorative trims

‌Industrial Hardware‌: Machinery parts, tool coatings, and architectural metalwork

‌Premium Surfaces‌: Luxury furniture hardware, high-end wood-effect metals

It is recommended for hardware accessories, car wheel drum, high-grade wood paint and other industrial fields.

Technical Index

Appearance:light yellow to light brown transparent viscous liquid

Solid Content:75%(120℃,30min)

Acid Value:25 mg KOH/g

Hydroxyl Value:100-120 mg KOH/g

Instructions:

The etherfied water based amino is recommend for crosslinking.The consumption is 35-40%of the resin consumption,and the baking temperature is above 130℃.

Paint film property

WL-181 paint film property