Azetidinedione-monocarbonamide capped prepolymer

Details Azetidinedione-monocarbonamide capped prepolymer Azetidinedione-monocarbonamide capped prepolymer

1987-02-09

1988-01-26

Anderson, Harold D.

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 73, 528322, 528323, 540354, 540356, 548545, 548546, 548547, C08G 1828, C08D20740

Patent

active

047217685

ABSTRACT:
Novel polyamide block copolymers are provided which comprise a central block of a soft segment derived from the residue of a polymeric polyol or polycarboxylic acid joined to terminal hard segment polyamide blocks. The linkages which join the blocks are of a novel type and are the opened form of certain monoazetidine-2,4-dione rings.
The block copolymers can be prepared very rapidly via anionically polymerizing lactams on to prepolymer soft segments containing terminal azetidine-2,4-dione rings.
The speed with which the polymerizations can be carried out make the block copolymers particularly useful for the RIM preparation of molded parts.

REFERENCES:
patent: 3862262 (1975-01-01), Hedrick et al.
patent: 4031164 (1977-06-01), Hedrick et al.
patent: 4034015 (1977-07-01), Hedrick et al.
patent: 4550157 (1985-10-01), Dai et al.
patent: 4668756 (1987-05-01), Cassidy et al.

Affiliated with

Also associated with

Rating

Azetidinedione-monocarbonamide capped prepolymer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Azetidinedione-monocarbonamide capped prepolymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Azetidinedione-monocarbonamide capped prepolymer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1468507