Method for the manufacture of polyisocyanurate foams

Details Method for the manufacture of polyisocyanurate foams Method for the manufacture of polyisocyanurate 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

044254458

ABSTRACT:
A method for the manufacture of polyisocyanurate foams which comprises blending a "B" side with an "A" side comprising an isocyanate. The "B" side comprises a diol, an amine/quaternary ammonium borate ester blend, a surfactant, a blowing agent, and a metal catalyst whose weight does not exceed 1.5% of the total weight of the "B" side. The "B" side remains a homogeneous liquid for at least seven days without the need for agitation and the foam formed by this method has a friability not exceeding 30%.

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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