Polyurethane based on epoxy-containing polymer polyol and proces

Details Polyurethane based on epoxy-containing polymer polyol and proces Polyurethane based on epoxy-containing polymer polyol and proces

1984-08-16

1985-09-17

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 54, 2643282, 26433112, 26433119, 521124, 521125, 521126, 521128, 521129, 521131, 521902, 528 48, 528 51, 528 53, 528 54, 528 55, 528 57, 528 58, 528 73, 528 75, C08G 1814, C08G 1863, C08G 1816, B29H 720

Patent

active

045421650

ABSTRACT:
Polyurethane resins having high rigidity and improved physical properties such as mechanical strengths and heat resistance are obtained by reacting a polyisocyanate with a polymer polyol derived from an epoxy-containing monomer, for example, glycidyl esters of unsaturated mono- and dicarboxylic acids, and a polyol, and bringing about ring-opening reaction of epoxy radicals in the presence of an epoxy curing agent, simultaneously with, or before or after the urethane-forming reaction.

REFERENCES:
patent: 3823201 (1974-07-01), Pizzini et al.
patent: 4314038 (1982-02-01), Markovs
patent: 4404324 (1983-09-01), Fock et al.
patent: 4429076 (1984-01-01), Saito et al.
Kuryla et al, "Polymer/Polyols, a New Class of Polyurethane Intermediates", Journal of Cellular Plastics, Mar., 1965, pp. 84-96.

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