Copolymers of p-acetoxystyrene with any of certain polyunsaturat

Details Copolymers of p-acetoxystyrene with any of certain polyunsaturat Copolymers of p-acetoxystyrene with any of certain polyunsaturat

1987-03-23

1988-10-04

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526340, 526295, 430270, 430287, 430325, C08F 1816, G03C 1495, G03C 168, G03C 500

Patent

active

047757302

ABSTRACT:
A new class of resins is provided which are copolymers of monomers comprising p-acetoxystyrene and any of certain designated polyunsaturated comonomers, viz., (1) a polyunsaturated carboxylic acid such as an alkyl ester of a carboxylic acid containing a conjugated diene group, e.g., a dialkyl muconate or an alkyl sorbate, or an allyl ester of a monoethylenically unsaturated carboxylic acid, e.g., diallyl maleate; (2) a conjugated diene hydrocarbon such as 2,5-dimethyl-2,4-hexadiene; or (3) a halogen-substituted conjugated diene hydrocarbon. One or more additional monoethylenically or polyethylenically unsaturated monomers, e.g. styrene, may be used in the preparation of the copolymer. The preferred copolymers are of p-acetoxystyrene and dimethyl muconate or diethyl muconate. The copolymer may be selectively hydrolyzed to corresponding copolymers of p-vinylphenol.

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patent: 4522999 (1988-06-01), Heimberg
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