Best-selling water repellent agent

Products Mode: SL-7520

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

Key Features and Benefits:
  • 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

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.