SilForce™ SS4191A is the base polymer of a solvent-borne silicone release coating system that provides reliable, easy release of aggressive adhesives.
SilForce™ SS4191A is a 30% solids solution of a silicone polymer in toluene. It is used as the base resin in a general purpose, tin catalyzed, condensation cure release coating system. SilForce™ SS4191A is considered an easy release polymer and will adhere well to a wide variety of films to create a low energy surface with a low easy release force. The release force of SilForce™ SS4191A is low enough that it will provide free release to even the most aggressive adhesives. In addition, the cured film of SilForce™ SS4191 is rich in silyl hydride groups that provide anchorage for methyl silicone pressure sensitive adhesives.
Haze: 30 max.
Appearance: OK
Solids: 28-30%
Solvent: Toluene
Primary Chemistry: Silicone
Easy release of even the most aggressive adhesives
Embossable for air egress applications
Adheres well to most surfaces
Provides good anchorage for methyl silicone PSA
Defect free and low coating weights
Poor release of adhesives used in tape and label applications.
SilForce™ SS4191A is recommended to be used in conjunction with the crosslinker SilForce™ SS4191B and the catalyst SilForce™ SS4192C to produce a versatile release coating that is useful in aerospace, automotive, electronic, packaging, and converting applications.
The SilForce™ SS4191 release coating system is most often applied to films using conventional coating methods to produce low coating weight release liners and adhesive tapes.
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