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US 5,854,356 AGranted
Polymers for release films on surfaces containing pressure-sensitive adhesives
AssigneeNeste Oy
InventorsChrister Bergstrom, Stefan Jakobsson, Marja-Leena Markkula, Ake Jafs, Inari Seppa
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Abstract
The invention relates to a polymer for release films of surfaces containing pressure-sensitive adhesives. The polymer includes a reactive polyolefin and a reactive release substance, which are chemically bonded together as a result of being compounded in a molten state. The invention also relates to a release film for surfaces containing pressure-sensitive adhesives.
Claims15
A polymer prepared by the process comprising reacting in a molten state:
- (a) a copolymer selected from the group consisting of ethylene-acrylic acid, ethylene-methacrylic acid, ethylene-butyl acrylate, ethylene-ethyl acrylate, ethylene-methyl acrylate, ethylene-hydroxyethyl methacrylate, ethylene-hydroxyethyl acrylate, ethylene-glycidyl methacrylate, ethylene-vinyl alcohol and ethylene-vinyl trimethoxy silane;
- and
- (b) a reactive release substance selected from the group consisting of silicone containing glycidyl groups, silicone containing hydroxyl groups and silicone containing amino groups.
Dependencies are inferred from the claim text.