CONTROLLED RADICAL ACRYLIC COPOLYMER THICKENERS

The present invention relates to acrylic block copolymers synthesized by a controlled radical process, and their use as thickeners in oil-based compositions. The acrylic copolymers are especially useful as viscosity index improvers in lubricating oil. La présente invention se rapporte à des copolymè...

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Bibliographische Detailangaben
Hauptverfasser:	CALLAIS, PETER ANTHONY, MACY, NOAH ELIOT, GUERRET, OLIVIER, SCHMIDT, SCOTT CHARLES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FUELS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	The present invention relates to acrylic block copolymers synthesized by a controlled radical process, and their use as thickeners in oil-based compositions. The acrylic copolymers are especially useful as viscosity index improvers in lubricating oil. La présente invention se rapporte à des copolymères blocs acryliques, synthétisés par un processus à radicaux contrôlés, et à leur utilisation en tant qu'épaississants dans des compositions à base d'huile. Les copolymères acryliques sont particulièrement utiles en tant qu'agents améliorant l'indice de viscosité dans une huile lubrifiante.