Imperial Chemical Industries Limited

Zeneca Limited

Nerco Inc.

Other

Infineum International Limited

Jeremy M. Holmes

Peter a. Tasker

Peter A Tasker

Derek Thorp

Peter M Quan

Peter W Austin

Jeremy M Holmes

Leonard Francis Lindoy

Steve Harris

Domenico C Cupertino

Ian Murray Atkinson

Darren S Baldwin

An automotive lubricating oil composition containing:

Lubricating oil compositions

Composition and method for selectively removing metal ions from an

A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal, an alkaline earth metal or ammonium chloride having a chloride content of at least 4 molar whereby said complex is decomposed and metal ions are transferred to the aqueous solution.

Chemical process for the recovery of metal from an organic complex

A solvent soluble heterocyclic o-hydroxy thione carrying a lipophilic group and the process for the selective extraction of gallium, and certain other related metals, especially from solutions containing excess aluminium.

Heterocyclic thione

A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal or alkaline earth metal chloride having a chloride content of at least 4 molar whereby said complex is decomposed and metal ions are transferred to the aqueous solution.

Chemical process of separating metals from an organic complex

A compound is a condensate of 1,2,3-trihydroxybenzene with an aldehyde. The condensate is a macrocyclic compound such as a cyclic tetramer. The aldehyde is preferably a long-chain aldehyde such as hexanal, dodecanal or tetradecanal. The condensate can be used as an anti-wear additive in hydrocarbon liquids such as liquid paraffin or as an anti-corrosion additive. The condensate can be prepared by reacting 1,2,3-trihydroxybenzene with an equimolar quantity of an aldehyde in the presence of an acid.

Composition containing an oligomeric 1,2,3-trihydroxybenzene additive

A composition comprising a chelating compound which is a macrocyclic compound containing at least two coordinating centers in the ring, at least one of which is a neutral base moiety, and an organic acid containing at least one alkyl or alkenyl group containing 8 or more carbon atoms. The macrocyclic compound contains at least 10 ring atoms and especially at least 12 ring atoms. The neutral base moiety is typically a nitrogen moiety. Preferably there are at least four coordinating centers at least two of which are neutral base moities. The acid can be an alkyl or alkenyl substituted acid for example a long chain carboxylic acid. The composition can be used as an extractant system for the selective extraction of metals from an aqueous phase into an organic phase.

Composition and use

Compound

A process for extracting metal values such as gallium and/or indium from aqueous solutions by contacting said solutions with a water immiscible organic solvent having dissolved therein a heterocyclic thione.

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Oldham, United Kingdom

Peter A Tasker