EP 1032601 A1 20000906 - DISPERSANTS AND DISPERSANT VISCOSITY INDEX IMPROVERS FROM SELECTIVELY HYDROGENATED POLYMERS
Title (en)
DISPERSANTS AND DISPERSANT VISCOSITY INDEX IMPROVERS FROM SELECTIVELY HYDROGENATED POLYMERS
Title (de)
DISPERGIERMITTEL UND DISPERGIERMITTEL-VISKOSITÄT-INDEXVERBESSERER AUS SELEKTIV HYDRIERTEN POLYMEREN
Title (fr)
DISPERSANTS ET ADDITIFS D'INDICE DE VISCOSITE POUR DISPERSANTS A BASE DE POLYMERES HYDROGENES SELECTIVEMENT
Publication
Application
Priority
US 9721224 W 19971118
Abstract (en)
[origin: WO9925744A1] The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of two different conjugated dienes, a copolymer of a p-alkylstyrene and a conjugated diene, or a homopolymer of a conjugated diene. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.
IPC 1-7
IPC 8 full level
C08C 19/00 (2006.01); C08C 19/02 (2006.01); C08F 8/00 (2006.01)
CPC (source: EP)
C08C 19/00 (2013.01); C08C 19/02 (2013.01); C10M 145/10 (2013.01); C10M 145/16 (2013.01); C10M 149/06 (2013.01); C10M 2205/06 (2013.01); C10M 2217/06 (2013.01); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2060/01 (2020.05); C10N 2060/02 (2013.01); C10N 2060/09 (2020.05)
C-Set (source: EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9925744 A1 19990527; AU 5449298 A 19990607; EP 1032601 A1 20000906; EP 1032601 A4 20010905
DOCDB simple family (application)
US 9721224 W 19971118; AU 5449298 A 19971118; EP 97948417 A 19971118