Diisocyanates useful as a structural component in the preparation of polyurethane plastics

Abstract

A mixture of homologues and isomers of hydrocarbons corresponding to the formula ##STR1## in which R represents a saturated, straight-chained aliphatic hydrocarbon radical having 8-15 carbon atoms, which mixture, at 1013 mbar, has a boiling range according to ASTM D 86 of 10.degree.-50.degree. C. within the temperature range of from 270.degree.-330.degree. C. is nitrated, hydrogenated and phosgenated. The product diisocyanate which is liquid, readily soluble, has a lower vapor pressure than TDI, does not tend to crystallize at room temperature and is virtually free of monoisocyanates is a mixture of homologues and isomers corresponding to the formula ##STR2## in which R is as defined above. These diisocyanates are particularly useful as starting materials in the production of polyurethane plastics.

Dependencies are inferred from the claim text.