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US 4,307,007 AGranted
Antisticking and antiblocking elastomeric compositions comprising copolymers of ethylene, alkyl acrylates, and half esters of 1,4 butenedioic acid and organic acid phosphates
AssigneeE. I. Du Pont de Nemours and Company
InventorNicolas Brodoway
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Abstract
The antisticking and antiblocking properties of ethylene/methyl or ethyl acrylate/1,4-butenedioic acid monoalkyl ester terpolymers is improved by mixing with said terpolymer a small quantity of a C.sub.12 -C.sub.24 straight chain alkyl or alkenyl acid phosphate or a C.sub.12 -C.sub.24 straight chain alkyl- or alkenyloxypoly(ethyleneoxy) acid phosphate.
Claims8
A composition comprising an elastomeric copolymer derived from component monomers consisting essentially of:
- (a) at least one compound selected from the group consisting of methyl acrylate and ethyl acrylate,
- (b) at least one monoalkylester of 1,4-butenedioic acid, wherein said alkyl moiety contains 1-6 carbon atoms, and
- (c) ethylene,
- and 0.1-10 parts per 100 parts of said copolymer of at least one phosphate ester selected from the group consisting of C.sub.12 -C.sub.24 straight chain alkyl and alkenyl acid phosphates and C.sub.12 -C.sub.24 straight chain alkyl- and alkenyloxypoly(ethyleneoxy) acid phosphates containing 1-4 ethyleneoxy groups.
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A method of improving the antisticking and antiblocking properties of an elastomeric copolymer derived from component monomers consisting essentially of:
- (a) at least one compound selected from the group consisting of methyl acrylate and ethyl acrylate,
- (b) at least one monoalkylester of 1,4-butenedioic acid, wherein said alkyl moiety contains 1-6 carbon atoms, and
- (c) ethylene,
- said method comprising mixing with said copolymer 0.1-10 parts per 100 parts of said copolymer of at least one phosphate ester selected from the group consisting of C.sub.12 -C.sub.24 straight chain alkyl or alkenyl acid phosphates and C.sub.12 -C.sub.14 straight chain alkyl- or alkenyloxypoly(ethyleneoxy) acid phosphates.
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Dependencies are inferred from the claim text.