Copolyester amides, and method for making

Details Copolyester amides, and method for making Copolyester amides, and method for making

1990-07-30

1992-02-25

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 48, 528 74, 528 80, 528 83, C08G 1880

Patent

active

050914944

ABSTRACT:
The invention relates to new aromatic/aliphatic and/or alicyclic copolyester amides with high molecular weights, without crosslinking. A subsequent solid phase condensation is avoided or is greatly limited in time. The occurrence of thermal decomposition reactions, dark discolorations of the polymers as well as the formation of block structures are avoided.

REFERENCES:
patent: 3836491 (1974-09-01), Taft et al.

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