Rigid isocyanurate polyurethane foams and method for preparing s

Details Rigid isocyanurate polyurethane foams and method for preparing s Rigid isocyanurate polyurethane foams and method for preparing s

1979-06-25

1981-06-02

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521129, 521131, 521160, 521170, 521902, 521123, 521125, 521124, C08G 1814, C08G 1832, C08G 1876

Patent

active

042712734

ABSTRACT:
Rigid isocyanurate urethane polymers useful for insulation purposes and characterized by superior thermal stability are prepared by reacting an excess of polymeric isocyanate with butenediol in the presence of blowing agent and catalyst.

REFERENCES:
patent: 3737400 (1973-06-01), Kumasaka et al.
patent: 3810851 (1974-05-01), Norman et al.
patent: 3928256 (1975-12-01), Cenker et al.
patent: 4002580 (1977-01-01), Russo
patent: 4025469 (1977-05-01), Kauffman
patent: 4094869 (1978-06-01), Biranowski et al.

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