Polyol and rigid polyurethane foam

C - Chemistry – Metallurgy – 08 – G

Patent

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400/102, 402/157

C08G 18/06 (2006.01) C08G 18/08 (2006.01) C08G 18/30 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08G 18/64 (2006.01) C08G 59/14 (2006.01) C08J 9/06 (2006.01) C08L 71/02 (2006.01)

Patent

CA 2029393

A B S T R A C T The present invention relates to a polyol, polyurethane resin, rigid polyurethane foam, preparation process thereof and a preparation process of a rigid polyurethane foam composite. The polyol used in the present invention comprises an epoxy resin base polyol, phenol resin base polyol component and aromatic amine base polyol component. The above polyurethane resin, foam and composite using above polyol as raw material have resistance to dissolution in a hydrochlorofluorocarbon and hydrofluorocarbon which are foaming agents having very low public hazards. The above-mentioned foam products have excellent physical properties equivalent to those of conventional polyurethane foams obtained by using chlorofluorocarbon as foaming agent, and hence are very useful as a thermal insulation material or a thermal insulation structure for refrigerators, freezers, insulation panels, ships and vehicles.

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