Process for producing polyisocyanurate foams

Details Process for producing polyisocyanurate foams Process for producing polyisocyanurate foams

1994-08-09

1995-12-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521902, C08G 1816

Patent

active

054729882

ABSTRACT:
A process for producing polyisocyanurate foam which comprises reacting an organic polyisocyanate with a polyol and water in the presence of a halogen-free aliphatic phosphoric ester having a molecular weight of 140 to 270 and a trimerization catalyst. Polyisocyanurate foams having good adhesion to membrane such as paper, iron, aluminium, plywood and the like can be obtained without use of an volatile blowing agent such as CFCs, HCFCs and HFCs and even at low density according to the present process.

REFERENCES:
patent: 4393015 (1983-07-01), Kaneda et al.
patent: 5026737 (1991-06-01), Ohnuma et al.
patent: 5102918 (1992-04-01), Moriya
patent: 5102923 (1992-04-01), Porosoff et al.
patent: 5317034 (1994-05-01), Nakamura et al.

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