Production of sheet-like polyurethane moldings

Details Production of sheet-like polyurethane moldings Production of sheet-like polyurethane moldings

C - Chemistry, Metallurgy

08

J

C08J 5/24 (2006.01) C08G 18/32 (2006.01) C08G 18/79 (2006.01) C08J 5/18 (2006.01) D06M 15/564 (2006.01)

Patent

CA 2204781

Sheet-like polyurethane moldings are produced by impregnation of porous sheets with a prepolymer containing free isocyanate groups and reversibly blocked isocyanate-reactive groups or containing free isocyanate-reactive groups and reversibly blocked isocyanate groups, and subsequent reaction of the prepolymers in a heated mold.

Produits moulés à base de polyuréthane de type feuilles, obtenus par imprégnation de feuilles poreuses avec un prépolymère renfermant des groupes isocyanates libres et des groupes isocyanates réactifs bloqués de façon réversible, ou alors des groupes isocyanates réactifs libres et des groupes isocyanates avec blocage réversible, et réaction ultérieure des prépolymères dans un moule chauffé.

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