Preparation of mixed phenyl esters of anhydride-forming polycarboxylic acids

Claim 1

IN A PROCESS FOR PRODUCING MIXED PHENYL ESTERS OF POLYCARBOXYLIC ACIDS WHICH FORM ANHYDRIDES AND WHICH ARE FREE FROM OLEFINIC UNSATURATION, THE STEP COMPRISING REACTING (A) AN ANHYDRIDE OF A POLYCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF BENZENE CARBOXYLIC ACIDS AND ALKANEDIOIC ACIDS HAVING UP TO ABOUT 10 CARBON ATOMS INCLUDING THOSE ANHYDRIDES HAVING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS, ALKYL, NITRO, ETHER AND KETO GROUPS, (B) A PHENOL SELECTED FROM THE GROUP CONSISTING OF PHENOL, ALKYL-SUBSTITUTED PHENOL AND HYDROXY BIPHENYL, (C) A SATURATED TERTIARY ALIPHATIC AMINE HAVING 3 TO 24 CARBON ATOMS, AND (D) AN ORGANIC HALIDE OF THE STRUCTURE, R''X, WHEREIN R'' IS SELECTED FROM ALKYL HAVING UP TO 24 CARBON ATOMS, PHENYLALKYL HAVING UP TO 12 CARBON ATOMS AND ALKENYL HAVING UP TO 10 CARBON ATOMS AND X IS SELECTED FROM CHLORINE, BROMINE AND IODINE.