EP 0400870 B1 19930908 - MULTIFUNCTIONAL VISCOSITY INDEX IMPROVER DERIVED FROM POLYAMINE CONTAINING ONE PRIMARY AMINO GROUP AND AT LEAST ONE SECONDARY AMINO GROUP EXHIBITING IMPROVED LOW TEMPERATURE VISCOMETRIC PROPERTIES
Title (en)
MULTIFUNCTIONAL VISCOSITY INDEX IMPROVER DERIVED FROM POLYAMINE CONTAINING ONE PRIMARY AMINO GROUP AND AT LEAST ONE SECONDARY AMINO GROUP EXHIBITING IMPROVED LOW TEMPERATURE VISCOMETRIC PROPERTIES
Publication
Application
Priority
US 35872989 A 19890530
Abstract (en)
[origin: EP0400870A1] Composition of matter useful as a multifunctional viscosity index improver for lubricating oils comprising reaction product of: (i) (a) copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystalliity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of Mw/Mn of less than 2 and a ratio of Mz/Mw of less than 1.8 and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprisig at least 5 weight percent of said chain, differ incomposition form one antoher by at least 7 weight percent ethylene, said copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; and (ii) at least one polyamine containing one primary amino group and from 1 to about 6 secondary amino groups. h
IPC 1-7
C10M 143/02; C10M 149/06; C10M 151/02; C10M 159/12; C10N 20/04; C10N 30/02; C10N 30/04; C10N 60/00; C10N 60/10; C10N 70/00
IPC 8 full level
C10L 1/236 (2006.01); C10L 1/24 (2006.01); C10M 143/02 (2006.01); C10M 149/06 (2006.01); C10M 151/02 (2006.01)
CPC (source: EP)
C10L 1/2364 (2013.01); C10L 1/2468 (2013.01); C10M 143/00 (2013.01); C10M 143/02 (2013.01); C10M 149/06 (2013.01); C10M 151/02 (2013.01); C10M 2205/00 (2013.01); C10M 2205/02 (2013.01); C10M 2205/022 (2013.01); C10M 2215/04 (2013.01); C10M 2215/042 (2013.01); C10M 2215/26 (2013.01); C10M 2217/024 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2221/02 (2013.01); C10M 2221/043 (2013.01); C10N 2070/02 (2020.05)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0400870 A1 19901205; EP 0400870 B1 19930908; AU 5598790 A 19901206; AU 628979 B2 19920924; BR 9002547 A 19910813; CA 2015058 A1 19901130; CA 2015058 C 19990504; DE 69003171 D1 19931014; DE 69003171 T2 19940105
DOCDB simple family (application)
EP 90305567 A 19900522; AU 5598790 A 19900528; BR 9002547 A 19900530; CA 2015058 A 19900420; DE 69003171 T 19900522