Catalyst for polyisocyanurate foams made with alternative blowin

Details Catalyst for polyisocyanurate foams made with alternative blowin Catalyst for polyisocyanurate foams made with alternative blowin

1995-02-10

1995-11-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

427373, 4283144, 521128, 521129, 521901, C08J 900

Patent

active

054708893

ABSTRACT:
Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent and (b) a catalyst mixture comprising (i) a carboxylate salt of an alkali metal or an alkaline earth metal or mixtures thereof, (ii) a tertiary amine, and (iii) a quaternary ammonium carboxylate salt, wherein the mole ratio of carboxylate metal salt: tertiary amine is a value less than about 2:1, and the total moles of quaternary ammonium carboxylate salt are less than the combined moles of the carboxylate metal salt and the tertiary amine.

REFERENCES:
patent: 3954684 (1976-05-01), Farrissey et al.
patent: 4136240 (1979-01-01), Zimmerman et al.
patent: 4204019 (1980-05-01), Parker
patent: 4426461 (1984-01-01), Smith
patent: 4459334 (1984-07-01), Blanpied et al.
patent: 4710521 (1987-12-01), Soukup et al.
patent: 4760100 (1988-07-01), McDaniel
Ricci, R. L. and Van Der Heijden, B., "Polyurethane & Polyisocyanurate Rigid Boardstock Technologies", Polyurethanes World Congress, Sep. 29-Oct. 2, 1987, pp. 266-269.

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