Ester-amide block copolymer and process for producing same

Details Ester-amide block copolymer and process for producing same Ester-amide block copolymer and process for producing same

1995-11-15

1998-06-02

Mosley, Terressa

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

Synthetic resins

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

525432, 525437, 528288, 528318, C08F28304

Patent

active

057601437

ABSTRACT:
An ester-amide block copolymer of the formula (1): ##STR1## wherein R is an aromatic hydrocarbon group with 6-20 carbon atoms and G is a residue of an aliphatic polyester, an aliphatic polycarbonate, an aliphatic polyethercarbonate or a polyorganosiloxane, and having a weight average molecular weight of 30,000-1,000,000. This copolymer is advantageously prepared by polycondensing an activated acyl lactam-terminated aromatic amide of the formula (2) with a diol of the formula (3) by bulk polymerization in a molten state: ##STR2## wherein R and G are the same as defined above.

REFERENCES:
patent: 4810770 (1989-03-01), Greene et al.

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