Preparation of cyclohexyl mono- and diurethanes and...

Details Preparation of cyclohexyl mono- and diurethanes and... Preparation of cyclohexyl mono- and diurethanes and...

C - Chemistry, Metallurgy

07

C

402/161, 260/469

C07C 263/04 (2006.01) C07C 265/02 (2006.01) C07C 269/06 (2006.01) C08G 18/72 (2006.01)

Patent

CA 1303623

29,?48 PREPARATION OF CYCLOHEXYL MONO- AND DI- URETHANES AND ISOCYANATES DERIVED THERE- FROM BY ADDITION OF METHYLCARBAMATE TO LIMONENE, PROCESS AND COMPOSITIONS 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° to about 150°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.

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