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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Main Authors | , |
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Format | Patent |
Language | English |
Published |
07.02.1978
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Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: US19760751839 |