Eco Friendly High Solids Saturated Polyester Resin Mirror Like Shine For Coil Coating

Eco-Friendly High-Solids Saturated Polyester Resin with Mirror-Like Shine For Coil Coating

 ‌  Coil coating‌ is a super-efficient, automated process where metal sheets get coated before being cut or shaped. Think of it like "pre-painting" – the metal is first cleaned and treated, then receives a tightly bonded coating that dries into a flawless protective layer. This approach ensures two big advantages:

1.Durability Boost‌: By coating flat metal (instead of shaped parts), you get ultra-uniform, defect-free protection. The result? Better corrosion resistance and longevity than coatings applied after manufacturing.

2.No Weak Spots‌: Shapes like car parts or building panels often have tricky corners or grooves that are hard to coat evenly. Coil coating solves this by applying the finish upfront, avoiding thin or missed areas.

But there's a catch – the coating must stay flexible. It needs to bend and stretch without cracking when the pre-coated metal is later formed into final products (like roofing panels or appliance doors). That's why advanced resins with "shape-shifting" adhesion are key to making this industrial magic work!

‌WL-182 is a ‌water-based Polyester resin‌ that mixes easily with deionized water—just keep adding water to thin it as needed! But here’s the trick: it stays stable only in ‌weakly alkaline conditions‌ (like a gentle soap solution). If it turns acidic (e.g., when mixed with acidic pigments), it might clump or separate. To keep it happy, adjust its pH with common additives like ammonia or organic amines. Fun fact: the thicker it gets, the higher the pH!

‌Why choose WL-182?‌

·         ‌Tough & Flexible‌: Perfect for coatings that need to bend without cracking, like metal parts or printed sheets.

·         ‌Works with Amino Baking Paints‌: Ideal for water-based paints cured by heat, offering high gloss and a smooth, rich finish.

·         ‌Shear-Stable & Budget-Friendly‌: Stays smooth during grinding (great for color pastes!), costs less, and cuts down on harmful fumes (low VOC).

‌Best for‌:

·         Fast-drying, eco-friendly coatings for ‌coil-coated metal‌ (think roofing or appliances).

·         Durable inks in ‌metal printing‌ (cans, packaging).

In short, WL-182 makes water-based coatings simpler, greener, and tougher—all while keeping costs low! 

Physical Property

Viscosity *: after dilution with propylene glycol methylether (1:1)

Application Guide

◆ After WL-182 is neutralized with N, N-dimethylethanolamine( 5~6% of the resin), it can be directly diluted with water.

◆ Add methylated amino resin (20%-30% of the resin) for baking and curing. The baking temperature is above 120°C. The baking conditions and paint film properties are related to the amino resin used. When it used with the fully methylated amino resin, an acid catalyst(0.5-1% of the resin) must be added, and the baking temperature must be above 140°C.

Storage Condition

Store the product in a cool and dry place, the recommended storage temperature is 0~40℃. The shelf life is one year. After the expiration date, if the test passed, it still can be used.

Special Tips

This material is complied according to our existing technology and experience, the technical advice provided is sincere, but it is not guaranteed to be used in all samples and formulations, all the data are for users reference only.