Preparation of cyclohexyl mono- and diurethanes and isocyanates

Organic compounds -- part of the class 532-570 series – Organic compounds – Isocyanate esters

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560115, 560345, C07C119045

Patent

active

047883294

ABSTRACT:
A process is disclosed whereby mono- and diurethane cyclohexyl derivatives are obtained corresponding to the Lewis acid-catalyzed addition reaction of dipentene and methyl carbamate at a temperature of from about 40.degree. to about 150.degree.C. The mono- and diurethane cyclohexyl derivatives are pyrolytically converted to other corresponding mono- and diisocyanate cyclohexyl derivatives. Novel vinyl unsaturated monoisocyanate cyclohexyl derivatives useful as reactants for polyfunctional compounds to produce cured compositions are disclosed.

REFERENCES:
patent: 2692275 (1954-10-01), Bortnick
patent: 4510097 (1985-04-01), Kehr
patent: 4618707 (1986-10-01), Grimm
Lesiak, Pol, J. Chem., 52, pp. 927-932, (1978).

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