Preparation of polyamide block copolymers

Details Preparation of polyamide block copolymers Preparation of polyamide block copolymers

2007-05-31

2011-11-22

Seidleck, James J (Department: 1765)

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

Synthetic resins

From carboxylic acid or derivative thereof

C525S420000, C525S438000, C525S540000, C525S09200D, C528S310000

Reexamination Certificate

active

08063169

ABSTRACT:
This invention relates to the preparation of polyamide block copolymers by sequential monomer addition. More particularly, it relates to catalysts capable of copolymerizing not only cyclic amides, but other monomers such as cyclic esters and epoxides as well, using sequential addition so as to produce useful and novel block copolymers.

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