| http://www.w3.org/ns/prov#value | - In a process for preparing isocyanic esters the steps which comprise heating to a pyrolysis temperature of about 135 to 500 C. a carbamate of the formula RNI-ICOOR', wherein R. is a member of the class of aryl, alkyl, and allroxyalkoxyalkyl groups, and R is a member of the class of alkyl, alkoxyalkyl, and alkoxyallroxyalkyl, and immediately separating an isocyanic ester from the resultant pyrolyza
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