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

1981-12-30

1983-09-13

Welsh, Maurice J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

521115, B01J 3102

Patent

active

044041217

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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