Non-exuding thermoplastic elastomers

Details Non-exuding thermoplastic elastomers Non-exuding thermoplastic elastomers

1994-04-19

1996-08-06

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528323, 528328, 525419, 525420, 525430, 525434, 525435, 525436, C08G 6342

Patent

active

055434894

ABSTRACT:
The invention relates to a composition based on a thermoplastic elastomer comprising polyether sequences in which the amount of matter extractable by ethanol is less than a value sufficient to prevent exudation. Thermoplastic elastomer block copolymer compositions according to the invention comprise polyether blocks and blocks selected from the group consisting of polyamide blocks and polyester blocks, said copolymer compositions incorporating a quantity of terpolymer, selected from the group consisting of ethylene/unsaturated acid ester/unsaturated dicarboxylic acid anhydride terpolymer and ethylene/unsaturated acid ester/unsaturated glycidyl monomer terpolymer, sufficient to prevent exudation of polyamide, polyester, or polyether oligomers or impurities.

REFERENCES:
patent: 4115475 (1978-09-01), Foy et al.
patent: 4195015 (1980-03-01), Deleens et al.
patent: 4207410 (1980-06-01), Burzin et al.
patent: 4331786 (1982-05-01), Foy et al.
patent: 4839441 (1989-06-01), Cuzin et al.
patent: 4864014 (1989-09-01), Cuzin et al.
patent: 4950717 (1990-08-01), Seymour et al.
Kohjin Co. Ltd., Patent Abstracts of Japan, vol. 16, No. 413 (C-980)(5456), Sep. 1992.

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