Process for the preparation of aromatic dicarboxylic acid dichlo

Details Process for the preparation of aromatic dicarboxylic acid dichlo Process for the preparation of aromatic dicarboxylic acid dichlo

1980-06-30

1981-12-29

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5160

Patent

active

043082165

ABSTRACT:
A one-step process for the preparation of pure aromatic dicarboxylic acid dichlorides by reacting an aromatic dicarboxylic acid or an aromatic dicarboxylic acid mixture with phosgene in the presence of a catalyst and, optionally, in a solvent or diluent, by using tertiary phosphines as catalysts, and the use of the dicarboxylic acid dichlorides obtained for the production of polycondensates.

REFERENCES:
patent: 2657233 (1953-10-01), Carnahan
patent: 3962326 (1976-06-01), Semler et al.
Lee, John B., J. Am. Chemical Society, vol. 88 (1966), pp. 3440-3441.
Kosolapoff, Gennady M., "Organophosphorus Compounds", (1959), John Wiley & Sons, Publ., pp. 98-101.

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