Preparation of carbodiimides from ureas by dehydration

Details Preparation of carbodiimides from ureas by dehydration Preparation of carbodiimides from ureas by dehydration

1974-05-28

1976-08-03

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11900

Patent

active

039729338

ABSTRACT:
Biscarbodiimides which are known to be effective as a surface application for polyethylene terephthalate fibers in lowering carboxyl end group concentration of the fibers and increasing hydrolytic stability, are prepared by the dehydration of ureas with triphenylphosphine and carbon tetrachloride.

REFERENCES:
smith, "Open Chain Nitrogen Compounds," vol., pp. 257-258, (1965).

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