C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/34
C08G 18/40 (2006.01) C08G 18/50 (2006.01) C08G 18/65 (2006.01)
Patent
CA 2004559
Z/E 35022 Abstract Method For Preparing Polyurea-Polyurethane Flexible Foams A method to prepare polyurethane and/or polyurea flexible foams which comprises reacting : A. an organic polyisocyanate composition B. at least one high Mw isocyanate-reactive compound C1. an amino-chain extender of Mw below 1000 having at least 2 amino groups of which at least one is directly attached to a cyclic hydrocarbon residue, in an amount of less than 1 % by wt of high Mw isocyanate-reactive compound(s) or C2. a mixture of at least 2 chain extenders wherein at least one is an amino chain extender of Mw below 1000, having at least 2 amino groups of which at least one is directly attached to a cyclic hydrocarbon residue, said mixture being used in an amount of 0.1 % to 10 % by wt of high Mw isocyanate-reactive compound(s) D. H2O E. optionally catalysts F. optionally further blowing agents which are different from H2O G. optionally further conventional additives
Bagaglio Giancarlo
de Witte Mireille
Frigo Roberto
Verhelst Gabriel
Atlas Europol Spa
Imperial Chemical Industries Plc
Marks & Clerk
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