Polyester-amides prepared from polymalonates and isocyanates

Details Polyester-amides prepared from polymalonates and isocyanates Polyester-amides prepared from polymalonates and isocyanates

1974-03-11

1977-02-01

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

2521883R, 260 25AN, 260 25AC, 260 25AZ, 260 75NC, 260 75NK, 260 75NP, 260 75NQ, 260 75N, 260860, C08G 1834, C08G 1842

Patent

active

040061221

ABSTRACT:
Poly(ester amides) are obtained by heating a hydroxyl-containing or hydroxyl-free polyester of malonic acid with an organic polyisocyanate in the presence of a basic catalyst. Crosslinking of the polyester takes place by reaction of the isocyanate with the active hydrogen of the CH.sub.2 group of the malonate to give amide linkages, in addition to formation of urethane linkages in the case where the polyester contains free hydroxyl groups. The products range from elastomeric materials, where the isocyanate is in the form of an isocyanate-terminated prepolymer derived by reaction of an organic polyisocyanate with a polyol, to more rigid plastics where the isocyanate is a "simple" isocyanate, i.e. not in prepolymer form.

REFERENCES:
patent: 2625531 (1953-01-01), Seeger
patent: 2970119 (1961-01-01), Caldwell
patent: 3079350 (1963-02-01), Bernstein
patent: 3296211 (1967-01-01), Winkler et al.
patent: 3450673 (1969-06-01), McKillip

Affiliated with

Also associated with

Rating

Polyester-amides prepared from polymalonates and isocyanates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyester-amides prepared from polymalonates and isocyanates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyester-amides prepared from polymalonates and isocyanates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1090690