Invista North America S.a.r.l.

E.i. Dupont De Nemours and Company

Paul Anthony Hamley

Martyn Poliakoff

Duncan C Woodcock

Raymond Oliver

Derek Alexander Graham

William Barry Thomas

Keith Whiston

Alexander Stuart Coote

Eduardo Cepeda Garcia-Verdugo

Ian Pearson

Chong Yan

Eduardo Garcia-Verdugo Cepeda

Thomas Iikenhans

Graham Robert Aird

Thomas Ilkenhans

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

A process for the production of an aromatic carboxylic acid comprising contacting in the presence of a catalyst, within a continuous flow reactor, one or more precursors of the aromatic carboxylic acid with an oxidant, such contact being effected with said precursor(s) and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point such that said one or more precursors, oxidant and aqueous solvent constitute a substantially single homogeneous phase in the reaction zone, wherein the contact of at least part of said precursor with said oxidant is contemporaneous with contact of said catalyst with at least part of said oxidant.

Production of aromatic carboxylic acids

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Nottingham, United Kingdom

Paul Anthony Hamley