Method for the manufacture of polyisocyanurate foams

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

1984-03-21

1985-09-17

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521902, 521172, 521177, C08G 1814, C08G 1818, C08G 1834

Patent

active

045421633

ABSTRACT:
A method for the manufacture of polyisocyanurate foams which comprises blending a "B" side with an "A" side that includes an isocyanate. The "B" side comprises a polyester polyol, an amine/quaternary ammonium borate ester blend, a surfactant, a blowing agent, and a metal catalyst in amounts of up to 20% by weight of the total weight of the "B" side. The "B" side remains a homogeneous liquid for at least one day without the need for agitation and the foam formed by this method has a friability not exceeding 30%.

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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