Process for preparing integral skin polyurethane and...

Details Process for preparing integral skin polyurethane and... Process for preparing integral skin polyurethane and...

C - Chemistry, Metallurgy

08

K

403/24, 403/25,

C08K 5/56 (2006.01) C08G 18/16 (2006.01) C08G 18/18 (2006.01) C08G 18/22 (2006.01) C08K 5/16 (2006.01)

Patent

CA 1135899

ABSTRACT An improved process for preparing integral skin poly- urethane, wherein a reaction mixture comprising polyol, polyisocyanate the NCO groups of which are not directly bonded to an aromatic group, no more than 0.5 part by weight of water to 100 parts by weight of polyol, and a catalyst is reacted in a mould, said improvement consisting in using as catalyst a synergistic combination of at least one organic ini- tiator, comprising at least one functional group of primary or secondary amines, with at least one organic compound of bismuth.

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