Invista North America S.a.r.l.

William Barry Thomas

Martyn Poliakoff

Paul Anthony Hamley

Keith Whiston

Alexander Stuart Coote

Ian Pearson

Chong Yan

Eduardo Garcia-Verdugo Cepeda

Eduardo Cepeda Garcia-Verdugo

Graham Robert Aird

A process for the production of a heteroaromatic carboxylic acid comprising contacting in the presence of a catalyst, a precursor of said carboxylic acid with an oxidant, such contact being effected with said precursor and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point.

Process for producing heteroaromatic carboxylic acids

A process for the manufacture of a lactam from an amino alkane nitrile and/or its hydrolysis derivatives, comprising reacting a solution comprising at least about 5% by weight amino alkane nitrile in water at a temperature of greater than or equal to about 350&#xb0; C. and at a pressure of greater than about 250 bar. Optionally, a dilute acid may be added as a catalyst.

Preparation of lactams

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Middlesbrough, United Kingdom

William Barry Thomas