Method for urethane-modified isocyanurate foams

Details Method for urethane-modified isocyanurate foams Method for urethane-modified isocyanurate foams

1984-03-21

1985-03-05

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521167, 521902, C08G 1814, C08G 1816, C08G 1834

Patent

active

045031673

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 optionally, 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 45% (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 3 days and 7 days after blending.

REFERENCES:
patent: 3635848 (1972-01-01), Rambosek
patent: 3697485 (1972-10-01), Rambosek et al.
patent: 3853818 (1974-12-01), Rambosek et al.
patent: 3880782 (1975-04-01), Rambosek
patent: 4151334 (1979-04-01), Kan et al.
patent: 4425444 (1984-01-01), White

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