LUBRICANT COMPOSITION FOR BALL JOINTS

The invention provides a grease composition for a ball joint which has a low friction coefficient under a load from normal temperatures to high temperatures, a small difference between static friction and dynamic friction, and little change in the friction coefficient even after repeated operation....

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Main Authors ABE, Kunitoshi, YANO, Hiroki, FUJIMAKI, Yoshitomo
Format Patent
LanguageEnglish
French
Published 02.07.2020
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Abstract The invention provides a grease composition for a ball joint which has a low friction coefficient under a load from normal temperatures to high temperatures, a small difference between static friction and dynamic friction, and little change in the friction coefficient even after repeated operation. TO this end, the invention provides a grease composition for a ball joint comprising: (i) a polyisoprene rubber and/or (ii) a polyisoprene rubber viscous material; a specific aliphatic amide and/or a specific aliphatic bisamide; and a specific urea compound. L'invention concerne une composition de graisse pour un joint à rotule présentant un faible coefficient de frottement sous une charge de températures normales à des températures élevées, une faible différence entre un frottement statique et un frottement dynamique et peu de changement du coefficient de frottement même après un fonctionnement répété. A cet effet, l'invention concerne une composition de graisse pour un joint à rotule comprenant : (i) un caoutchouc polyisoprène et/ou (ii) un matériau visqueux de caoutchouc polyisoprène ; un amide aliphatique spécifique et/ou un bisamide aliphatique spécifique ; et un composé urée spécifique.
AbstractList The invention provides a grease composition for a ball joint which has a low friction coefficient under a load from normal temperatures to high temperatures, a small difference between static friction and dynamic friction, and little change in the friction coefficient even after repeated operation. TO this end, the invention provides a grease composition for a ball joint comprising: (i) a polyisoprene rubber and/or (ii) a polyisoprene rubber viscous material; a specific aliphatic amide and/or a specific aliphatic bisamide; and a specific urea compound. L'invention concerne une composition de graisse pour un joint à rotule présentant un faible coefficient de frottement sous une charge de températures normales à des températures élevées, une faible différence entre un frottement statique et un frottement dynamique et peu de changement du coefficient de frottement même après un fonctionnement répété. A cet effet, l'invention concerne une composition de graisse pour un joint à rotule comprenant : (i) un caoutchouc polyisoprène et/ou (ii) un matériau visqueux de caoutchouc polyisoprène ; un amide aliphatique spécifique et/ou un bisamide aliphatique spécifique ; et un composé urée spécifique.
Author ABE, Kunitoshi
FUJIMAKI, Yoshitomo
YANO, Hiroki
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DocumentTitleAlternate COMPOSITION LUBRIFIANTE POUR JOINTS À ROTULE
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RelatedCompanies SHELL OIL COMPANY
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V
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Snippet The invention provides a grease composition for a ball joint which has a low friction coefficient under a load from normal temperatures to high temperatures, a...
SourceID epo
SourceType Open Access Repository
SubjectTerms CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
Title LUBRICANT COMPOSITION FOR BALL JOINTS
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