WynCoat® SL‑3318 High‑Performance Levelling Agent for Solvent‑Free Synthetic Leather

Topwin Technology focuses on silicone additive R&D. To address common defects such as mottled surfaces and orange‑peel texture on solvent‑free leather, we launch WynCoat® SL‑3318, a specially modified polysiloxane levelling agent. Custom‑built for eco‑friendly solvent‑free PU synthetic leather and artificial leather production lines, it resolves key industry pain points including poor A/B component levelling, faint grain patterns and surface wavy marks, helping synthetic‑leather manufacturers improve product quality and production efficiency.

Featuring a proprietary modified‑silicone molecular structure, SL‑3318 delivers outstanding levelling and penetrating power. It penetrates deeply into release papers with fine & deep grains to restore sharp grain texture and enhance the three‑dimensional feel of finished leather. It effectively balances system surface tension to eliminate orange‑peel, surface unevenness and light‑shadow color difference. It yields uniform, fine surface gloss and improves color saturation for bright, vivid color performance.

It exhibits excellent compatibility with solvent‑free PU base materials without delamination or precipitation, and will not impair subsequent lamination or physical properties. It fits full‑range production processes and can be added post‑resin reaction for flexible formula handling.

Committed to green chemical innovation, Topwin’s SL‑3318 fits low‑VOC solvent‑free eco‑leather systems and supports the synthetic‑leather industry’s green transition. Our professional technical team provides full‑support for formula tuning and process optimization. We supply stable, cost‑effective silicone surface additive solutions for automotive interior leather, furniture sofa leather, footwear & apparel leather, microfiber artificial leather and more.