Diisocyanates, a process for their production and their use...

Details Diisocyanates, a process for their production and their use... Diisocyanates, a process for their production and their use...

C - Chemistry, Metallurgy

07

C

402/160, 260/455

C07C 265/14 (2006.01) C08G 18/77 (2006.01)

Patent

CA 1289146

DIISOCYANATES, A PROCESS FOR THEIR PRODUCTION AND THEIR USE IN THE PRODUCTION OF POLYURETHANE PLASTICS ABSTRACT OF THE DISCLOSURE .alpha.-(4-isocyanatophenoxy)-.omega.-(4-isocyanato-3- methyl phenoxy)-alkanes and mixtures thereof with the corresponding methyl-free and/or dimethyl substituted diisocyanates are made by phosgenating the corresponding diamine(s). These diisocyanates do not form a precipitate when reacted with a polyol and produce polyurethanes having outstanding properties.

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