Silicone Additive for PU Resin Modifier SL-7520
Product Details
WynCoat® SL-7520 is a primary hydroxyl-functional polydimenthyl siloxane with carbinol terminated. It is used to modify and customize polyurethane (PU) resin. Pu resin is an environmentally friendly polymer material with multiple applications, and is often used in coatings, adhesives, foam plastics and other fields. Adding a PU resin modifier can improve the performance and characteristics of the PU resin, such as enhancing its strength, improving heat resistance, and improving corrosion resistance.
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 at 25°C：40-60 mm2/s
OH value (KOH mg/g): 50-65
Applications
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 200kg steel drum
12 months in closed containers.
Limitations
This product is neither tested nor represented as suitable for medical or pharmaceutical used.
Product Safety
Product safety information required for safe use is not included. Before handling, read product and safety data sheets and container labels for safe use. Physical and health hazard information.
