93194 ⎘
Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety from derivatives of carbamic acid
Sub-classes:CARBAMATE PRODUCTION METHOD, CARBAMATE ESTER PRODUCTION METHOD, AND UREA DERIVATIVE PRODUCTION METHOD
#2Preparation method of supercritical carbon dioxide thickener for tight oil and gas reservoir
#3Process to prepare higher ethylene amines and ethylene amine derivatives
#4Process to prepare higher ethylene amines and ethylene amine derivatives
#5Synthesis of carbamate or urea compounds
#6Safe and efficient process for the preparation of carmustine
#7Process for preparing low-viscosity allophanates containing actinically curable groups
#8Process for preparing disubstituted urea and carbamate compounds from amines, carbon dioxide, and epoxides
#9METHOD FOR MAKING CARBAMATES, UREAS AND ISOCYANATES
#10Method for making carbamates, ureas and isocyanates
#11Synthesis of 6,7-Dihydro-5H-imidazo[1,2-a]imidazole-3-sulfonic acid amides
#12Process for preparing low-viscosity allophanates containing actinically curable groups
#13Process for preparing polyether allophanates using zinc compound catalysts