Polyisocyanurate foam and laminates thereof and process for...

Details Polyisocyanurate foam and laminates thereof and process for... Polyisocyanurate foam and laminates thereof and process for...

C - Chemistry, Metallurgy

08

G

403/13, 154/123.

C08G 18/64 (2006.01) B32B 5/18 (2006.01) C08G 18/14 (1980.01)

Patent

CA 1151348

ABSTRACT OF THE DISCLOSURE A foam characterized by the presence of isocyanurate groups which is the reaction product of a polymethylene polyphenyl isocyanate, such as that of the formula: Image wherein n is an integer from 1 to 8 inclusive, and a furan resin of the formula: Image wherein R is -CH2- or -CH2-O-CH2-, and the average value of m is such that the furan resin has a viscosity of up to 50,000 centi- poises at 25°C. The foam exhibits a low friability and an improved capacity to maintain its structural integrity when exposed to fire, and can be used in structural laminates.

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