Preparation of hard foams containing urethane groups or urethane

Details Preparation of hard foams containing urethane groups or urethane Preparation of hard foams containing urethane groups or urethane

1991-05-02

1993-03-09

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521174, 521176, 521902, C08G 1832, C08G 1848, C08J 908, C08J 912

Patent

active

051928132

ABSTRACT:
The present invention relates to a process for the preparation of a hard foam containing urethane groups or urethane and isocyanurate groups by the polyisocyanate polyaddition process, by reacting

REFERENCES:
patent: 3332934 (1967-07-01), Booth et al.
patent: 3424700 (1969-01-01), Booth et al.
patent: 3558529 (1971-01-01), Whitman et al.
patent: 3870683 (1975-03-01), Freure et al.
patent: 4102833 (1978-07-01), Salisbury
patent: 4264755 (1981-04-01), Cross
patent: 4977201 (1990-12-01), Ogawa et al.

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