Process for the production of carbodiimides and carbodiimide-isocyanate adducts

Carbodiimides are prepared by reacting organic isocyanates at a temperature of at least 150 DEG C. in the presence of a catalyst having the formula wherein R and R' are the same or different and represent hydrogen, alkyl, aryl and when joined together form a heterocyclic ring; Y is hydrogen, al...

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Bibliographic Details
Main Authors MEISERT; ERNST, FISCHER; PETER
Format Patent
LanguageEnglish
Published 07.02.1978
Subjects
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:Carbodiimides are prepared by reacting organic isocyanates at a temperature of at least 150 DEG C. in the presence of a catalyst having the formula wherein R and R' are the same or different and represent hydrogen, alkyl, aryl and when joined together form a heterocyclic ring; Y is hydrogen, alkyl, chloroalkyl, aryl, alkoxyphosphono and wherein Q is hydrogen, alkyl or aryl; Q' is hydrogen, alkyl, aryl, COR'' , and SO2R'' wherein R'' is alkyl or aryl, and when Y is joined together with R, they form a heterocyclic ring; and X is oxygen or sulfur.
Bibliography:Application Number: US19760751839