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

  Xiamen WangQin Chemical Technology Co., Ltd. is a technology-based enterprise integrating research and development (R&D), production, and operations. Equipped with advanced modern production facilities and comprehensive testing equipment. Since its establishment,WangQin has built its brand and core competitiveness through "technological innovation". Specializing in the R&D, production, and applied research of polymer materials, the company has obtained numerous national invention patents and possesses continuous independent innovation and technological R&D capabilities. 

  Backed by a dedicated team of 50 professionals, WangQin operates state-of-the-art manufacturing infrastructure and comprehensive product testing systems to rigorously uphold ISO9001-certified Quality Management Systems. With an annual production capacity of 20,000 tons for both water-borne and oil-based resins, WangQin Provide multi-field industries application resin material products, from standard resin formulations to custom-tailored resin material solutions designed for diverse market needs.   

Our Products‌:
Acrylic resins, alkyd resins, epoxy resins, polyester resins, amino resins, and other customizable products.

‌Service Fields‌:
Packaging printing, plastic products, metal products, glass products, construction machinery, construction, wood products, and new energy industries.

    While pursuing technological innovation and business growth, WangQin also actively fulfills its corporate social responsibility (CSR). Specializing in the research and development (R&D), production, and applied research of polymer materials, WangQin drives green and sustainable development within the industry by providing high-quality, environmentally friendly polymer matrials products. WangQin strictly adheres to environmental management system certifications to minimize the environmental impact of the production processes. Additionally, WangQin proactively collaborates with industry peers to enhance its R&D capabilities and accelerate the translation and application of scientific achievements, contributing to societal progress. ‌Wangqin demonstrates its corporate social responsibility through tangible actions, exemplifying the accountability and leadership expected of an industry pioneer.

Guided by a philosophy of green and sustainable development, WangQin is dedicated to researching and developing eco-friendly, high-performance new material products. With a senior technical R&D team and deep expertise in polymer materials, coupled with extensive market experience, WangQin consistently introduces innovative products that meet both market demands and environmental standards. These products not only deliver exceptional performance but also significantly reduce environmental pollution, reflecting the company’s profound commitment to sustainability and its proactive implementation of sustainable practices.

    WangQin leads the industry innovation, spearhead the digital transformation of production. By integrating intelligent sensing, big data analytics, and cloud computing technologies, we have achieved fully automated monitoring and management of production processes, significantly enhancing both efficiency and quality control precision. Within our digitalized workshops, every process is precisely controlled, ensuring that each step from raw materials to finished products—adheres to the highest standards. Empowered by digitalization, WangQin drives green intelligent manufacturing and sets a new benchmark for the industry.