Hydrolysis-resistant copolyether-esteramides

Details Hydrolysis-resistant copolyether-esteramides Hydrolysis-resistant copolyether-esteramides

1979-07-05

1980-12-09

Lieberman, Paul

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

Synthetic resins

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

260 18N, 525408, 525411, 525926, 525927, C08L 7102, C08L 7700

Patent

active

042385822

ABSTRACT:
Hydrolysis-resistant copolyether-esteramides according to this invention are terminated, at one chain end, by a hydrocarbon radical and at the other chain end by a hydroxyl group. The sequential linear aliphatic copolyether-esteramides according to the invention are obtained by a polycondensation reaction of linear aliphatic dicarboxylic polyamide oligomers having a molecular weight comprised between 300 and 15,000, with .omega.-.omega.'-dihydroxyl polyoxyalkylene sequences having a molecular weight comprised between 100 and 6000 in the presence of a linear aliphatic monocarboxylic polyamide oligomer having a carboxyl group at one end of the macromolecular chain and a hydrocarbon radical at the other end thereof.

REFERENCES:
patent: 2174527 (1939-10-01), Peterson
patent: 3514498 (1970-05-01), Okazaki
patent: 3522329 (1970-07-01), Okazaki
patent: 3549724 (1970-12-01), Okazaki
patent: 3632666 (1972-01-01), Okazaki
patent: 3636135 (1972-01-01), Garforth
patent: 3839245 (1974-10-01), Schlessman
patent: 3923925 (1975-12-01), Schneider

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