Liquid diphenylmethane diisocyanate compositions

Details Liquid diphenylmethane diisocyanate compositions Liquid diphenylmethane diisocyanate compositions

1983-09-30

1984-12-25

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453AM, 560 27, 560 26, 521155, 521159, C07C 6900, C07C12506

Patent

active

044903006

ABSTRACT:
The invention is directed to a process for the production of an isocyanate which is both stable and liquid at room temperature comprising reacting pure diphenylmethane diisocyanate or crude diphenylmethane diisocyanate with a diol of the formula, ##STR1## wherein R is a C.sub.2 to a C.sub.5 aliphatic radical, at a temperature of from 20.degree. to 110.degree. C., in a ratio such that the resultant product has an isocyanate group content of from 20 to 30%, by weight and to the products produced therefrom.

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