Polysiocyanurate-polyurethane foams

Details Polysiocyanurate-polyurethane foams Polysiocyanurate-polyurethane foams

1982-01-04

1983-10-18

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521125, 521129, 521128, 521902, 521131, 521 99, C08G 1814, C08G 1832

Patent

active

044106416

ABSTRACT:
Polyisocyanurate-polyurethane foams are prepared by reacting an organic polyisocyanate with oxyethylated aromatic amines and diols having equivalent weights from 31 to 100 and at an isocyanate index of 150 to 500 in the presence of a trimerization catalyst and a blowing agent.

REFERENCES:
patent: 3493525 (1970-02-01), Britain
patent: 3597371 (1971-08-01), Britain
patent: 3922238 (1975-11-01), Narayan et al.
patent: 4067833 (1978-01-01), Austin et al.
patent: 4165414 (1979-08-01), Narayan et al.
patent: 4169921 (1979-10-01), Moss et al.

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