Modified rigid, foamable urethane composition and method

Details Modified rigid, foamable urethane composition and method Modified rigid, foamable urethane composition and method

C - Chemistry, Metallurgy

08

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C08G 18/67 (2006.01) B32B 5/18 (2006.01) B32B 27/08 (2006.01) B32B 27/18 (2006.01) B32B 27/40 (2006.01) C08G 18/48 (2006.01) C08G 18/65 (2006.01) C08G 18/81 (2006.01) C08J 9/04 (2006.01) C08J 9/34 (2006.01) C08J 9/36 (2006.01) C08L 75/14 (2006.01)

Patent

CA 2252496

A polyurethane composition to provide a rigid polyurethane foam suitable for use as a core material in a composite laminate and which polyurethane composition includes an additive compound or oligomer-prepolymer having hydroxy groups for reaction with the diisocyanate of the polyurethane or which has been prereacted with a diisocyanate and which contains after the polyurethane reaction ethylenically unsaturated groups, like allyl or acrylic groups, to react with an unsaturated polyester resin. The invention includes the organic additive oligomer-prepolymer and the hybrid polyester-rigid polyurethane laminates.

Cette invention concerne une composition de polyuréthane qui permet d'obtenir une mousse rigide de polyuréthane pouvant être utilisée comme matériau d'âme dans un statifié composite. Cette composition de polyuréthane contient un composé d'addition ou prépolymère d'oligomère présentant des groupes hydroxyles réactifs au diisocyanate du polyuréthane, ou qui a été préconditionné avec un diisocyanate pour contenir, après réaction du polyuréthane, des groupes éthyléniquement insaturés, tels que l'allyle ou des groupes acryliques, qui réagissent au contact d'une résine de polyester insaturé. L'invention inclut l'additif organique prépolymère d'oligomère et les stratifiés hybrides polyester-polyuréthane rigide.

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