Masil® SF 201

Clear Colorless Liquid

Masil SF 201 is a vinyl-terminated silicone polymer that may be heat-cured or room-temperature-cured (RTV). It is normally cured with 2 to 4% by weight of Masil XL-1 Crosslinker system and a catalyst at 20 ppm that must be incorporated into the polymer, not the crosslinker. This polymer vulcanizes via an addition reaction and does not produce volatile gases during curing. Masil SF 201 can be used as the base polymer in silicone elastomers to provide a non-corrosive protective shield against water, dirt, and other harmful contaminants in mold-making rubber and electrical/electronic encapsulation applications.

Product Details

Attribute Value
Typical Properties
Appearance Clear Colorless Liquid
Silicone Content (%) 100
Solids 97.5 – 100.0
Viscosity 850 – 1,150
Shelf Life (Mos) 24
Flash Point (°F, PMCC) > 300
Specific Gravity (25°C) 0.965
Refractive Index 1.404
Iodine Value (%) 2.20 – 3.60
Water (%) 0.10 Max.
Application Group Application Description
Household Care Household Cleaners Used in leather, glass and vinyl cleaners; Provides wetting and softening.
Industrial Intermediates Mold Release Provide release and lubrication.
Lubricants Industrial Lubricants Provides lubrication.
Paints & Coatings Polish Used in auto polishes; Provides wetting and gloss.
Textile & Leather Textile Softener Provide wetting and softening.
Other Reactive Fluids

Masil® Reactive Fluids

ProductDescriptionTypical Usage Pattern
Masil® SFR 70Hydroxy Terminated Reactive FluidPlasticizer for silicone elastomers, silicone water repellents, hydrophobizing silica
Masil® SFR 100Hydroxy Terminated Reactive FluidPlasticizer for silicone elastomers, silicone water repellents, hydrophobizing silica
Masil® SFR 750Hydroxy Terminated Reactive FluidTextiles, Paper Coatings, Water-repellent coating formulations
Masil® SFR 2000Hydroxy Terminated Reactive FluidTextiles, Paper Coatings, Water-repellent coating formulations
Masil® SFR 3500Hydroxy Terminated Reactive FluidTextiles, Paper Coatings, Water-repellent coating formulations
Masil® SFR 20,000Hydroxy Terminated Reactive FluidRTV sealants, adhesives, coatings and mold making products
Masilwax™ Base 135Methyl hydrogen dimethyl polysiloxanesPrecursor to modified polyorganosiloxanes; Cross-linking and chain extending agent in vinyl silicone elastomers
Masil® SF MHMethyl hydrogen dimethyl polysiloxanesModification of polyester and methacrylic resins; Waterproofing and impregnating agent
Masil® XL-1 CrosslinkerMethyl hydrogen dimethyl polysiloxanesEncapsulation / Potting Compounds
Masil® SF 201Vinyl Functional Silicone PolymerEncapsulation / Potting Compounds
Masil® SF 202Vinyl Functional Silicone PolymerEncapsulation / Potting Compounds