Preparation of polyaddition products of Mannich condensates and

Details Preparation of polyaddition products of Mannich condensates and Preparation of polyaddition products of Mannich condensates and

1984-09-13

1985-06-25

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252308, 521167, 524721, 524762, 528 76, C08G 1814

Patent

active

045254885

ABSTRACT:
A stable dispersion of polyaddition products (also called polyurethane polymer polyols) may be made by reacting a Mannich condensate with an organic polyisocyanate in a polyether polyol. The Mannich condensate is made by reacting a phenol with an alkanolamine and formaldehyde and should not be subsequently water-stripped or alkoxylated. If the Mannich condensate has its water content removed, the ultimate dispersion will be unstable and will phase separate. These dispersions are useful in the production of polyurethane foams.

REFERENCES:
patent: 3297597 (1967-01-01), Edwards et al.
patent: 4137265 (1979-01-01), Edwards et al.
patent: 4296213 (1981-10-01), Cuscurida et al.

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