Process for producing a urethane-modified polyisocyanurate foam

Details Process for producing a urethane-modified polyisocyanurate foam Process for producing a urethane-modified polyisocyanurate foam

2005-03-01

2005-03-01

Cooney, Jr., John M. (Department: 1711)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S112000, C521S128000, C521S129000, C521S130000, C521S163000, C521S166000, C521S177000

Reexamination Certificate

active

06861453

ABSTRACT:
A process for producing a urethane-modified polyisocyanurate foam having excellent characteristics such as flame retardancy, heat resistance and low smoking property, and further having improved initial adhesion, particularly adhesion after a relatively long period of time, to a facing material particularly a flexible facing material, by using water as a blowing agent, is provided. A polyisocyanate compound component, a polyol component, water and a morpholine compound are reacted in the presence of a trimerization catalyst for isocyanates.

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