Exxon Chemical Patents, Inc.

Exxon Research and Engineering Company

Infineum International Limited

Robert Dryden Tack

Kenneth Lewtas

Albert Rossi

Graham Jackson

Sarah L Pearce

Alexis A Oswald

Iain More

Jacqueline D Bland

Edwin W Lehmann

David P Gillingham

John P Szykowski

David H Rehrer

Christophe Ledeore

Colin Morton

Dennis G Peiffer

Jacob I Emert

Alan Roy Katritzky

Robert L Elliott

Brian William Davies

Lewis J Fetters

Kenneth W Bartz

Ramah Jessica Brod

Brid Dilworth

Dhanesh Gordon Goberdhan

Andrew Matthew McAleer

Carlo S Fava

Gerald Ivan Brown

Robert Robson

John Edward Maddox

Richard Dix Kerwood

Darryl R Smith

Sally J Ayres

John Huang

Barbara Catherine Brooke

Rodger F Andrews

Lain More

Jose Alves

Philip D Armitage

John R Brazier

Brian W Davies

Irina V Shcherbakova

Brian Swinney

Carlo Fava

Sean A Creedon

Derek A Towe

Phillip D Armitage

Bobby Patel

Phillip Armitage

Diana Riano-Gordo

A fuel oil composition comprises a fuel oil in a major amount, which fuel oil has a mass % against n-alkane carbon number distribution curve characterised by: and, optionally, units of the formula (II): wherein

Fuel oil compositions

A copolymer comprising units derivable from (A) one or more olefins of defined chain length; and (B) one or more ethylenically unsaturated compounds different from (A). The copolymers are useful as cold flow improvers in fuel oils.

Fuel oil additives and compositions

Hydrogenated block copolymers are used as a component in a cold flow additive composition.

Specific esters of specific alkoxylated alcohols in combination with other cold flow improvers provide oils with improved low temperature properties.

Oil compositions

Compositions comprising a wax, a nucleator, and a wax growth arrestor improve the low temperature properties of fuel oils, especially high wax content fuels.

Oil additives and compositions

Oils having improved low temperature properties and additives for use therein.

Lubricating oil compositions

Reaction products of long chain esters with amines improve the cold flow properties of oils.

Materials for use in oils and processes for their manufacture

There are disclosed fuel compositions containing an additive formed by admixture of (i) at least one ethylene polymer, (ii) the product of the condensation reaction between an aldehyde or ketone or reactive equivalent thereof and at least one compound comprising one or more aromatic moieties having at least one substituent of the formula XR,and one further substituent R,wherein X is oxygen of sulfur, R,is hydrogen or a moiety bearing at least one hydrocarbyl group and R,represents a hydrocarbyl group and (iii) at least one oil soluble polar nitrogen compound different from the condensation product and having one or more substituents of the formula NR,where R,represents a hydrocarbyl group containing 8 to 40 carbon atoms.

Additives and oleaginous compositions containing a dendrine coldflow

Distillate fuel is treated with additives whose structure match the crystal planes of the wax which crystallizes from the fuel to produce crystals below 4000 nanometres in size, suitable additive include novel sulpho-carboxylic materials particularly their esters and amine derivatives such as the amine salts and/or amides of ortho-sulpho benzoic acid.

Chemical compositions and use as fuel additives

Nitrogen-containing compounds

Crude oils, lubricating oils or fuel oils have their flow point improved by adding to the crude oil, lubricating oil or fuel oil a minor proportion by weight of a polymer containing the repeating units: ##STR1## where x is an integer and y is 0 or an integer and wherein in the total polymer x+y is at least two.

Oil and fuel oil compositions

Copolymers of straight chain alpha olefins and maleic anhydride esterified with an alcohol wherein the alpha olefin is of the formula:

Middle distillate compositions with improved low temperature properties

A liquid hydrocarbon particularly fuel oil containing an amine-salt having the formula ##STR1## wherein R, R.sup.1 and R.sup.2 are hydrogen or a hydrogen - and carbon-containing group;

Fuel oil additives

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Abingdon, United Kingdom

Robert Dryden Tack