Polyols for urethane-modified isocyanurate foams

Details Polyols for urethane-modified isocyanurate foams Polyols for urethane-modified isocyanurate foams

1983-03-17

1984-01-10

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

044254440

ABSTRACT:
A method for the manufacture of urethane-modified polyisocyanurate foams in which an isocyanate is blended with a "B" side comprising a polyol blend, a surfactant, a blowing agent, and a catalyst. The polyol blend comprises at least 5% (wt.) of a mixture of a polyalkoxylated amine and a polyalkoxylated quaternary ammonium borate ester, at least 40% (wt.) of a resin polyol, with any remainder being a polyether or polyester polyol. All components of the "B" side will remain a homogeneous liquid without phase separation and without the need for agitation for at least 7 days after blending. The resin polyols are preferably moderate viscosity, aromatic polyester polyols derived from polycarbomethoxyl-substituted diphenyls, polyphenyls, and benzyl esters of the toluate family.

REFERENCES:
patent: 4040992 (1977-08-01), Bechara et al.
patent: 4151334 (1979-04-01), Kan et al.
patent: 4186255 (1980-01-01), Klein et al.
patent: 4256802 (1981-03-01), Koehler et al.

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