Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Exxonmobil Research and Engineering Company

Basf Se Ludwigshafen

Paul Dubs

Samuel Evans

Roger Martin

Rita Pitteloud

Hugo Camenzind

Hans-Rudolf Meier

Michael Rasberger

Hans R Meier

Peter Hofmann

Gerrit Knobloch

Werner Stegmann

Stephan Allenbach

Marc Ribeaud

Robert M O'Neil

Michèle Gerster

Reto Luisoli

Rolf Schumacher

Pierre Rota-Graziosi

Peter Nesvadba

Liehpao O Farng

Rolf Mulhaupt

Graziano Vignali

Ivan Orban

Angela Stefana Galiano-Roth

Andreas Mühlebach

David Eliezer Chasan

Peter Baumeister

Eduard Troxler

Bernard Gilg

Walter David Vann

Milos Rusek

Zdenek Mazour

François Rime

Peter Hänggi

Miles J Hutchings

Marcia G Rogers

James Robbins

Giovanni De Roit

Gunnar Demme

Serge Laemlin

Arpad Major

Mich&egrave;le Gerster

Polymers grafted with a compound of formula I, wherein the general symbols are as defined within, have outstanding stability against oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation.

Sulfoxides or sulfones grafted onto polymers

The present invention relates to a block copolymer prepared by ATRP, wherein the polymer chain terminal group is structurally modified with the functionally effective group of a lubricant or polymer additive selected from the group consisting of antioxidants, metal deactivators, antiwear and extreme pressure additives and corrosion inhibitors. The invention also relates to a composition comprising the structurally modified block copolymer and a composition of matter subject to oxidative, thermal or light induced degradation, such as lubricants or polymers.

Polymers produced by atom transfer radical polymerisation technique with structurally modified terminal groups

The present invention describes an improved lubricant composition comprising a particularly effective combination of components comprising ashless antiwear and rust inhibitor additives with an antioxidant liquid mixture formed by reacting an olefin with a mixture of diphenylamines and phenothiozines.

Lubricant containing a synergistic combination of rust inhibitors, antiwear agents, and a phenothiazine antioxidant

Polymers grafted with a compound of formula I, formula (I) wherein the general symbols are as defined in claim 1, have outstanding stability against oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation[R&#x2014;SOR&#x2014;SO&#x2014;R.&#x2003;&#x2003;(I)

The invention relates to liquid sulphur-containing antioxidants and to compositions comprising them. The novel lubricant compositions comprise the reaction product of a selected group of 5-tert-butyl-4-hydroxy-3-methyl(or tert-butyl)phenyl substituted carboxylic acid esters with thiodiethylene glycol and a mono-hydroxy alcohol with a carbon chain length higher than 4 C-atoms. The novel lubricant compositions are highly resistant to oxidative degradation and are capable of reducing the negative effects of deposits, such as black sludge, in motor combustion engines, particularly spark ignition internal combustion engines.

Liquid phenolic sulphur-containing antioxidants

The present invention relates to improved lubricant compositions highly resistant to oxidative degradation comprising selected 5-tert.-butyl-4hydroxy-3-methylphenyl substituted fatty acid esters, diphenylamines and zinc dithiophosphates. The compositions as defined above are characterized by superior antioxidative properties. This can be demonstrated in various standard tests such as Deposit and Oxidation Panel Test (DOPT) and Pressurized Differential Scanning Calorimetry (PDSC).

Lubricants with 5-tert.-butyl-4-hydroxy-3-methylphenyl substituted fatty acid esters

Stabilizers for emulsion crude rubbers, synthetic latex and natural rubber latex

Process for the preparation of 3-aryl-benzofuran-2-ones

Liquid polyfunctional additives

This invention relates to a novel, technically advantageous process for the preparation of a mixture of alkylated phenothiazines and diphenylamines. Starting from diphenylamine, this is reacted with elemental sulfur in the presence of iodine, and the substance mixture of diphenylamine and phenothiazine is treated with an olefin in the presence of an acid catalyst.

Process for the preparation of a mixture of alkylated phenothiazines and diphenylamines

The lubricity (anti-wear properties) of fuels, for example hydrocarbon fuels, oxygenated fuels or mixtures thereof, particularly diesel or aviation fuels having reduced sulphur and/or aromatic content for compliance with regulator requirements, is improved by addition of at least a product which can be obtained by reacting components a), b) and c), where component a) is a compound of the formula I or a mixture of compounds of the formula I, component b) is a compound of the formula II or a mixture of compounds of the formula II and component c) is a compound of the formula III or a mixture of compounds of the formula III,

Liquid polyfunctional additives for improved fuel lubricity

Described are products suitable as lubricant and fuel additives which are obtainable by reacting a polyunsaturated polymer, for example polybutadiene, polyisoprene, ring-opening polymerised polycyclooctenamer or polynorbomene, with at least one enophilic compound of the groups of the dihydrocarbyidithiophosphoric acids, dihydrocarbylmonothiophosphoric acids, dihydrocarbylphosphoric acids or mercaptans.

Polymeric multifunctional lubricant additives

Products are described which are obtainable by reacting compounds of formula I with compounds of formula IIa or/and IIb and IIIa or/and IIIb and additionally, where appropriate, IV ##STR1## wherein the general symbols are as defined in claim 1, the compound of formula I being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate, the compound of formula IIa being, for example, diethanolamine, the compound of formula IIIa being, for example, methyl oleate, and the compound of formula IV being, for example, sulfur. The cited products can be used as liquid antioxidants in organic materials.

Liquid antioxidants as stabilizers

Products are described which can be obtained by reacting components a), b) and c), where component a) is a compound of the formula I or a mixture of compounds of the formula I, component b) is a compound of the formula II or a mixture of compounds of the formula II and component c) is a compound of the formula III or a mixture of compounds of the formula III, ##STR1## in which the general symbols are as defined in claim 1, the compound of the formula I being, for example, pentaerythritol, thiodiethylene glycol, 1,4-butanediol, 1,4-propanediol, diethylene glycol, triethylene glycol, diethanolamine or glycerol, the compound of the formula II being, for example, sunflower oil or coconut fat, and the compound of the formula III being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate. The abovementioned products can be used as liquid antioxidants in polymers and lubricants.

A description is given of novel compounds of formula I ##STR1## wherein R.sup.1, R.sub.2, R.sub.3, and R.sup.4 are hydrogen, alkyl, phenylalkyl, or alkoxy and where R.sub.5 and R.sub.6 are hydrogen or phenyl or together with the linking carbon atoms, are cycloalkenylene or cycloalkenylene which is interrupted by oxygen or sulfur. These compounds are useful as stabilizers for organic materials against oxidative, thermal or light-induced degradation.

Cyclic phosphinic acid derivatives as stabilizers

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Marly, Switzerland

Paul Dubs