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US 5,393,824 AGranted
Urea derivatives of maleated polyolefins
AssigneeEastman Chemical Company
InventorThomas D. Roberts
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Abstract
Compositions are disclosed that are the urea derivatives of succinylated polyolefins (maleated polyolefins). The urea derivatives of succinylated polyolefins are of the formula; ##STR1## wherein R is a polyolefin attached at any point along the hydrocarbon chain. The urea derivative of succinylated polyolefins is useful as a coupling agent to couple polyolefins with dissimilar polymers having an excess of unreacted acid groups such as polyesters.
Claims14
An emulsion composition comprising:
- (a) about 10 to 30 weight percent of the urea derivative of succinylated polyolefins of the formula;
- ##STR8## wherein R is a polyolefin attached at any point along the hydrocarbon chain,
- (b) a minor amount up to 15 weight percent of a surfactant, and
- (c) about 60 to 90 weight percent water.
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A process for the production of the urea derivative of succinylated polyolefins comprising;
- (I) melt mixing urea with a succinylated polyolefin of the formula;
- ##STR9## wherein R is a polyolefin and the anhydride group is attached at any point along the hydrocarbon chain and wherein the molar concentration of said urea is about equal to the molar equivalence of the succinylate group on the succinylated polyolefin;
- and
- (II) cooling the recovered urea derivative of succinylated polyolefin.
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Dependencies are inferred from the claim text.