Polyamide elastomer from carboxy terminated polyamide and polyox

Details Polyamide elastomer from carboxy terminated polyamide and polyox Polyamide elastomer from carboxy terminated polyamide and polyox

1984-07-11

1986-01-21

Anderson, Harold D.

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

Synthetic resins

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

524538, 524539, 528288, C08L 6700, C08L 7700

Patent

active

045658498

ABSTRACT:
A process for preparing polyamide elastomers is provided which process comprises reacting a polyamide-forming component having carboxyl groups at both ends thereof with polyoxyalkylene glycol(s) at least 10 wt. % of which comprises a polyoxy-2-methyl-1,3-propylenediol having a number-average molecular weight of about 400 to 10,000. The polyamide-forming component forms a polyamide block having a recurring unit of the formula: ##STR1## in which n represents a positive integer of 5 to 11, and/or ##STR2## in which l represents a positive integer of 6 to 20 and m represents a positive integer of 4 to 20.
The obtained polyamide elastomers have excellent low-temperature properties and elastic recovery.

REFERENCES:
patent: 4208493 (1980-06-01), Deleens et al.
patent: 4361680 (1982-11-01), Borg et al.
patent: 4376856 (1983-03-01), Tanaka et al.

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