WynCoat® SL-3248 Water-Based Wetting Agent: Solve Crater Issues & Create Three-Dimensional Leather Texture

Industry Pain Points

As the synthetic leather industry shifts to waterborne PU formulas, manufacturers frequently struggle with blooming on deep-grain release paper, coating craters and flat grain patterns — major bottlenecks for waterborne dry-process PU fabrics and leather surface finishing. Hangzhou Topwin Technology, a specialist in silicone additive R&D, launches WynCoat® SL-3248 modified polyether silicone waterborne wetting agent exclusively for waterborne leather systems. It delivers powerful wetting performance to eliminate spreading defects and enable stable mass production of premium leather.

Core Performance to Tackle Industry Challenges

SL-3248 is a 100% active pure polyether silicone with precisely optimized molecular structure, featuring two irreplaceable core strengths:

1. Powerful Wetting for Deep, Full Grain Texture Compatible with deep-grain release paper and suede paper dry-process fabrics, it greatly boosts coating penetration. The coating evenly fills grain textures to form clear, three-dimensional leather surfaces, eliminating shallow, cheap-looking flat texture and upgrading finished leather grade.
2. Long-Lasting Anti-Crater Effect for Flawless Coatings It sharply lowers system surface tension to fix common coating defects including craters, pinholes and uneven spreading on waterborne leather finishes. It works perfectly for both thick deep-grain leather and thin topcoats, ensures uniform coating and reduces defective product loss.

User-Friendly Process & High Production Efficiency

• Low dosage threshold: Recommended addition rate of only 0.2%–2%. Tiny dosage delivers outstanding wetting performance to control formula costs effectively.
• Excellent compatibility: Fully compatible with all waterborne PU dry-process fabrics and waterborne leather finishing agents, with no risk of delamination or precipitation.
• Simple operation: Directly added at room temperature without pre-treatment. Fits automatic spray and roll coating lines without disrupting existing production workflows.