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US 4,981,903 AGranted
Polysiloxane-grafter copolymer topical binder composition with novel hydrophilic monomers and method of coating therewith
AssigneeMinnesota Mining and Manufacturing Company
InventorsJames E. Garbe, Smarajit Mitra
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Abstract
A novel composition which can serve as a pressure-sensitive or non-pressure sensitive adhesive at room temperature (20.degree. C.) and which comprises a vinyl polymeric backbone with grafted pendant siloxane polymeric moieties. Also disclosed are topical binder compositions containing the novel composition.
Claims14
A composition comprising:
- (a) a copolymer which comprises repeating A, B, and C monomers wherein:
- A is at least one free radically polymerizable acrylic or methacrylic monomer present in 0.1-99.9% by weight of all monomer present;
- B is at least one highly polar acrylic or methacrylic monomer copolymerizable with A and different from A, the amount by weight of B monomer being from 0.1 to 99.9% of the total weight of all monomers in said copolymer;
- and
- C is a monomer present as from 0.01 to 50% by weight of all monomer present and having the general formula
- X(Y).sub.n Si(R).sub.3-m Z.sub.m
- wherein:
- X is a vinyl group copolymerizable with the A and B monomers;
- Y is a divalent linking group;
- R is hydrogen, lower alkyl, aryl, or alkoxy;
- Z is a monovalent siloxane polymeric moiety having a number average molecular weight of at least about 500 and is essentially unreactive under copolymerization conditions;
- n is zero or 1;
- m is an integer of from 1 to 3;
- and
- (b) from 0 to about 500 parts by weight of compatible solvent or plasticizer per 10 parts copolymer.
12 more elements
Dependencies are inferred from the claim text.