Best-selling water repellent agent

WynCoat^® SL-7520 is a primary hydroxyl-functional polydimethyl siloxane with carbinol terminated。

• Reactive with isocyanate to give silicone/PU copolymer. As urethane modifier to improve softness, flexibility, lubricity, breathability, compatibility, abrasion resistance and water repellency of synthetic leather.
• Increase release properties
• Good lubricity
• Provides abrasion and scratch resistance
• Provides water repellency
• Softening and flexibility
• Good water vapor permeability

Typical data:
Appearance：light straw-amber colored clear liquid
Viscosity(25ºC)：40-60 mm²/s
OH value (KOH mg/g): 50-65

How to us:
Copolymerize with NCO-endblocked urethane prepolymer.
Copolymerize with MDI and polyol.
Mix SL-7520, polyisocyanate and polyol, and cure.

Package and storage stability:
Available in 200 kg steel drum
12 months in closed containers

Limitations:
This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

Product Safety:
Product safety information required for safe use is not included. Before handling, read product and safety data sheets and container labels foe safe use, physical and health hazard information.