Hydrolysis stable block polyetheresteramides and process for the

Details Hydrolysis stable block polyetheresteramides and process for the Hydrolysis stable block polyetheresteramides and process for the

1986-02-05

1988-02-23

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

525420, 525425, 528279, 528283, 528301, C08G 6948, C08L 6700, C08L 7700

Patent

active

047271337

ABSTRACT:
Hydrolysis-stable, thermoplastic block polyetheresteramides are produced by a catalyzed polycondensation of linear, aliphatic polyamides having carboxyl end groups with .alpha.,.omega.-dihydroxypolyethers and additionally, a linear or branched, aliphatic or cycloaliphatic diol having 2-8 carbon atoms in an amount of 3-30 mol %, relative to the sum of the moles of both other starting materials. The ratio of the moles of the polyamide components to the sum of the moles of the dihydroxypolyether and diol components is 0.81 to 0.985.

REFERENCES:
patent: 4208493 (1980-06-01), Deleens et al.
patent: 4328331 (1982-05-01), Chen et al.
patent: 4345052 (1982-08-01), Mumcu et al.
patent: 4345064 (1982-08-01), Mumcu
patent: 4349661 (1982-09-01), Mumcu
patent: 4361680 (1982-11-01), Borg et al.
patent: 4565849 (1986-01-01), Horikawa et al.
Cols. 1-2, 35-36, U.S. Pat. No. 3,306,875; Hay.

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