Standard Oil Company (indiana)

Kerford A Marchant, Jr

David J Fenoglio

Ellis K Fields

Edward E Paschke

Steven A Cerefice

Steven E Lindberg

Richard E Van Strien

High purity monomers, such as methyl p-hydroxymethylbenzoate, are produced by selective reduction of dicaboxylic acid monoesters with diborane. The resultant monomers are suitable for producing new polymers with improved physical properties.

Method of making high purity monomers from dicarboxylic acid monoesters

Amide-imide type polymers containing amide derivatives of 4-carboxy-phthalimide aliphatic carboxylic acids are useful as wire coatings and in film and molding applications.

Polyamide-imides prepared from 4-carboxy-phthalimide aliphatic

A new azo-bisanhydride made by condensing 2 moles of 4-chloroformylphthalic anhydride (4-mono acid chloride of trimellitic anhydride), 1 mole of hydrazine, and 1 mole of a ketone (acetone) having the formula: ##STR1## Such compounds are useful as dyes and as monomers capable of copolymerizing thus introducing the azo chromophore group into the backbone of a polymer.

Azo-bisanhydride of trimellitic anhydride

A new azo-bisanhydride made by condensing 2 moles of 4-chloroformylphthalic anhydride (4-mono acid chloride of trimellitic anhydride), 1 mole of hydrazine, and 1 mole of a ketone (acetone) having the formula: ##SPC1## Such compounds are useful as dyes and as monomers capable of copolymerizing thus introducing the azo chromophore group into the backbone of a polymer.

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Evanston, IL, United States of America

Kerford A Marchant, Jr