Process for the production of organic carbodiimides and their us

Details Process for the production of organic carbodiimides and their us Process for the production of organic carbodiimides and their us

1994-01-24

1994-10-11

O'Sullivan, Peter

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C26700

Patent

active

053548884

ABSTRACT:
Organic carbodiimides are produced by carbodiimidization of isocyanate groups with catalysts of the phospholine type. At the end of the carbodiimidization reaction, the catalyst system is removed by introducing carbon dioxide in vacuo at temperatures of from about 100.degree. to about 250.degree. C. The carbodiimides produced by this process are particularly useful as stabilizers for plastics.

REFERENCES:
patent: 2853473 (1958-09-01), Campbell et al.
patent: 4014935 (1977-03-01), Ibbotson

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