Process for preparing polyol-catalyst mixtures useful in the pre

Details Process for preparing polyol-catalyst mixtures useful in the pre Process for preparing polyol-catalyst mixtures useful in the pre

1983-08-04

1984-08-14

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521167, C08G 1814

Patent

active

044657919

ABSTRACT:
Polyol-catalyst mixtures, useful in the preparation of rigid polyurethane cellular products, are prepared simultaneously by reacting a Mannich base compound, water, and an epoxide and subsequently removing the water from the reaction mixture. Also provided are new rigid polyurethane cellular products having a high content of isocyanurate linkages, superior heat distortion temperatures and improved insulating properties, which products are obtained by reacting a polyisocyanate with the aforementioned polyol-catalyst mixture.

REFERENCES:
patent: 2779689 (1957-01-01), Reis
patent: 2981700 (1961-04-01), Parker et al.
patent: 3297597 (1967-01-01), Edwards et al.
patent: 3892687 (1975-07-01), Bechara et al.

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