Methyl-substituted polyphenylcarboxylic acids
AssigneeStandard Oil Company (Indiana)
InventorJohn A. Donohue
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Abstract
Methyl-substituted polyphenylacyl compounds are prepared by selective oxidation of oligomers of mesitylene. These methyl-substituted polyphenylacyl compounds are useful as intermediates for polyamides and polyesters. The esters are useful as plasticizers for polyvinylchloride.
Claims20
A methyl-substituted polyphenyl compound of the structural formula ##STR9## wherein n is a whole number from 2 to 3 inclusive, Y is selected from the class consisting of methyl acylhalide and --COOR, R is hydrogen or a monovalent alkyl group of 1 to 24 carbon atoms, when Y is methyl, each X is methyl and when Y is --COOR, each X is selected from the class consisting of methyl and --COOR.
A process for producing methyl-substituted polyphenyl compounds of the structural formula ##STR10## wherein n is a whole number from 1 to 3, Y is selected from the class consisting of methyl groups acylhalide and -COOH, which comprises oxidizing at least one para methyl group of a polymesityl wherein said process is carried out using cobaltic catalyst at a temperature within the range of from 20.degree. to 150.degree. in acetic acid medium.
A resinous polymer of a methyl-substituted polyphenylcarboxylic acid compound wherein the said polymer has the structural formula ##STR11## wherein n comprises a whole number from 1 to 3 inclusive, L is ##STR12## Z is selected from the group consisting of divalent aliphatic moieties and divalent aromatic moieties, m is a number of recurring units wherein the said resinous polymer has an inherent viscosity of at least 0.20 dl/g in a 60/40 phenol-tetrachloroethane solvent at 30.degree. C.
Dependencies are inferred from the claim text.