Low temperature toughened polyamides
AssigneeE. I. Du Pont de Nemours and Company
InventorEdmund Arthur Flexman, Jr.
Life of this patent
Estimating the term…
Abstract
A toughened polyamide blend which exhibits improved toughness at exceptionally low temperatures can be prepared from: (A) 60 to 90 weight percent of a polyamide matrix resin; and (B) 10 to 40 weight percent of a rubber component including: (1) a functionalized rubber selected from ethylene/propylene copolymers and ethylene/propylene/diene terpolymers, and (2) an ethylene copolymer of the formula E/X/Y wherein E is a radical formed from ethylene and is 40 to 90 weight percent of the ethylene copolymer, X is an acrylate ester of an alcohol having 1 to 10 carbon atoms and is 10 to 80 weight percent of the ethylene copolymer, and Y is selected from glycidyl methacrylate and glycidyl acrylate and is 0.5 to 10 weight percent of the ethylene copolymer.
Claims7
A polymer blend comprising components (A) and (B):
- (A) about 60 to 90 weight percent, based on the total weight of (A) and (B), of a polyamide matrix resin selected from the group consisting of nylon 6, nylon 6,6;
- nylon 6,10 and nylon 6,12;
- and
- (B) about 10 to about 40 weight percent, based on the total weight of (A) and (B), of a rubber component comprising;
- (1) a functionalized rubber selected from the group consisting of ethylene/propylene copolymers and ethylene/propylene/diene terpolymers;
- said copolymers and terpolymers containing 0.1 to 4 weight percent of groups capable of reacting with the amine moieties of the polyamide, and
- (2) an ethylene copolymer of the formula E/X/Y wherein
- E is a radical formed from ethylene and forms about 40 to about 90 weight percent of the ethylene copolymer,
- X is a radical formed from an acrylate ester of an alcohol having 1 to 6 carbon atoms and forms about 10 to about 80 weight percent of the
- Y is a radical selected from the group consisting of a radical formed from glycidyl methacrylate and a radical formed from glycidyl acrylate and forms about 0.5 to about 10 weight percent of the ethylene copolymer.
Dependencies are inferred from the claim text.