Process for the preparation of an isocyanurate modified...

Details Process for the preparation of an isocyanurate modified... Process for the preparation of an isocyanurate modified...

C - Chemistry, Metallurgy

08

J

403/13

C08J 9/00 (2006.01) C08G 18/36 (2006.01) C08G 18/48 (2006.01) C08G 18/64 (2006.01) C08G 18/79 (2006.01)

Patent

CA 1280545

ABSTRACT OF THE DISCLOSURE A process is disclosed for the preparation of novel isocyanurate modified polyurethane foams, in which an organic polyisocyanate is reacted with a polyol in the presence of a catalyst system and a blowing agent, optionally in the presence of a filler material and/or an emulsifying agent. The polyol contains 5 to 100% by weight of an oil, resin or a mixture of resins origin- ating from soft wood and\or a chemically modified resin or oil. The polyol also contains in its molecular structure hydroxyl groups capable of reacting with isocyanate groups. The catalyst system contains 5 to 95% by weight of a trimerization catalyst for the polyisocyanate, which catalyst causes cross-linked polyisocyanurate structures containing isocyanurate rings to be formed from the poly- isocyanate in the polymer structure. Novel isocyanurate modified polyurethane foams prepared by the process are also disclosed.

527739

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