Patent ID: 7547798

Claim:
A process for preparing an end-product mixture comprising an aminobenzoate ester comprising the following formula (I) (NH 2 C 6 H 4 COO) x R 2 (OH) y wherein R 2 is a linear or branched, substituted or unsubstituted alkyl and/or alkylene group having from 3 to 300 carbon atoms and wherein x and y are each independently a number ranging from 0 to 100 provided that neither x nor y can be zero concurrently, the process comprising the steps of: (a) providing a reaction mixture comprising an alkyl aminobenzoate comprising the following formula (II) NH 2 C 6 H 4 COOR 1 where R 1 is an alkyl group having from 1 to 20 carbon atoms, an alcohol reagent comprising the following formula (HO) n R 2 wherein n is a sum of the expression “x+y” and an auxiliary alcohol wherein the auxiliary alcohol has a vapor pressure that is greater than a vapor pressure of the alkyl aminobenzoate and the aminobenzoate ester wherein at least a portion of the auxiliary alcohol within the reaction mixture reacts to provide an alcohol by-product and wherein the alcohol by-product has a boiling point that is less than a boiling point of the auxiliary alcohol; and (b) exposing the reaction mixture to conditions effective to provide an end-product mixture comprising the aminobenzoate ester.