For solvent-based systems • Cost-effective • Abrasion-resistant & smooth • Long-lasting stability
Product Overview
WynCoat SE-7109F is a high-molecular-weight silicone dispersant developed by Hangzhou Topwin Technology exclusively for solvent-based PU leather systems, tailored for dry-process top coats. Featuring excellent system compatibility, it ensures stable application with minimal risk of cratering, while significantly enhancing coating abrasion resistance, softness and smooth hand feel, plus effective anti-blocking performance.
With high activity, low dosage and outstanding overall cost efficiency, SE-7109F has become the preferred additive for quality improvement and cost reduction in solvent-based leather production. It is widely compatible with various solvent-based PU leather manufacturing processes, comprehensively elevating finished leather quality and processing efficiency.
Core Advantages
1. Exclusive for Solvent-Based Systems with Excellent Compatibility
- Specially designed for solvent-based PU and solvent-based surface treatment formulations, highly compatible with polyurethane systems
- Minimizes common defects such as craters, oil spots, blooming and foggy surfaces during application
- Does not compromise system stability, nor affect coating transparency, gloss or adhesion
- Ready-to-use with minimal formulation adjustment required, strong adaptability
2. Ultra-High Cost-Efficiency — Major Upgrade at Low Cost
- Active content ≥97% with sufficient effective ingredients for high efficiency
- Recommended dosage of only 0.5%–3.0% delivers ideal results with lower consumption
3. Excellent Abrasion & Scratch Resistance for Extended Service Life
- Significantly improves surface abrasion resistance, scratch resistance and flex endurance
- Reduces scratches and damage during transportation, usage and processing
- Enhances product durability and grade, making leather more durable and value-retentive
4. Delicate, Soft & Smooth Touch for Higher Product Premium
- Imparts a refined, dry, non-sticky premium tactile sensation to leather
- Long-lasting hand feel without migration, greasiness or tack-back
- Greatly elevates end-product experience and market competitiveness
Technical Specifications
| Item |
Specification |
| Appearance |
Milky white paste |
| Active Content |
≥97% |
| Viscosity (25°C) |
≥10,000 cp |
| Applicable Systems |
Solvent-based PU leather dry-process top coat, solvent-based surface treatment agents |
| Dosage |
0.5%–3.0% (adjusted per actual hand feel and abrasion requirements) |
Application Scope
- Dry-process top coat of solvent-based PU synthetic leather
- Solvent-based leather surface treatment agents
- Solvent-based coatings requiring high abrasion resistance, smoothness and anti-blocking performance
Summary of Benefits
- System Compatibility: Solvent-specific formula, no cratering, no impact on film formation or gloss
- Cost Control: High activity with low dosage, remarkable cost-effectiveness and obvious cost reduction
- Comprehensive Performance: Five-in-one benefits — abrasion resistance, scratch resistance, softness, smoothness and anti-blocking
- Easy to Use: Direct addition, no complex processing required
Topwin is one of the leading professional manufacturers and solution providers with more than 20 years of experience, and has domestic top-level engineers in the silicone surfactant industry. Specializing in research and development, production, sales, and marketing of silicone-based special functional performance materials, Topwin also serves as a professional provider of technical services. Now our products are widely used in Polyurethane Foam, Corp Protection, Coatings and Inks, Leather & Textile, Release Coating for Paper & Film,Home & Personal Care, and others.
