Moldable and/or extrudable polyether-ester-amide block copolymer

Details Moldable and/or extrudable polyether-ester-amide block copolymer Moldable and/or extrudable polyether-ester-amide block copolymer

1980-09-30

1982-05-25

Seccuro, Carman J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525411, 525419, 525430, C08L 7700

Patent

active

043317863

ABSTRACT:
A moldable and/or extrudable polyether-ester-amide block copolymer is disclosed which has the formula ##STR1## wherein A is a linear saturated aliphatic polyamide sequence formed from a lactam or amino acid having a hydrocarbon chain containing 4 to 14 carbon atoms or from an aliphatic C.sub.6 -C.sub.12 dicarboxylic acid and a C.sub.6 -C.sub.9 diamine, in the presence of a chain-limiting aliphatic carboxylic diacid having 4 to 20 carbon atoms; said polyamide having an average molecular weight between 300 and 15,000; and B is a polyoxyalkylene sequence formed from linear or branched aliphatic polyoxyalkylene glycols, mixtures thereof or copolyethers derived therefrom said polyoxyalkylene glycols having a molecular weight of between 200-6,000 and n indicates a sufficient number of repeating units so that said polyether-ester-amide block copolymer has an intrinsic viscosity of from about 0.8 to about 2.05. The polyether-ester-amide block copolymer is prepared by reacting a dicarboxylic polyamide, the COOH groups of which are located at the chain ends, with a pol-oxyalkylene glycol hydroxylated at the chain ends, in the presence of a catalyst constituted by a tetraalkylorthotitanate having the general formula Ti(OR).sub.4, wherein R is a linear branched aliphatic hydrocarbon radical having 1 to 24 carbon atoms.

REFERENCES:
patent: 3265762 (1966-08-01), Quisenberry
patent: 3549724 (1970-12-01), Okazaki
patent: 3636135 (1972-01-01), Garforth
patent: 3660356 (1972-05-01), Radlmann
patent: 3766146 (1973-10-01), Witsiepe
patent: 3839245 (1974-10-01), Schlossman
patent: 3862262 (1975-01-01), Hendrick
patent: 4105640 (1978-08-01), Fortuna et al.
patent: 4230838 (1980-10-01), Foy et al.

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