EP 0400869 A3 19910918 - IMPROVED HIGH MOLECULAR WEIGHT DISPERSANT ADDITIVES
Title (en)
IMPROVED HIGH MOLECULAR WEIGHT DISPERSANT ADDITIVES
Publication
Application
Priority
US 35872189 A 19890530
Abstract (en)
[origin: EP0400869A2] The present invention is directed to improved oil soluble dispersant materials which comprise members selected from the group consisting of oil soluble salts, amides, imides, oxazolines, or mixtures thereof, of polyolefin-substituted mono and dicarboxylic acids or their anhydrides covered as per claim 1 wherein the polyolefin is characterized by number average molecular weight of from about 1,500 to 2,500 and a molecular weight distribution of less than about 3.0, and wherein the dispersant additive contains within its structure an average of from 0.7 to 1.3 mono- or dicarboxylic acid producing moieties (preferably acid or anhydride moieties) covered as per claim 1 per polyolefin molecule, and wherein the dispersant material contains from 0.5 to 4 equivalents of secondary amine groups per equivalent of the mono- or dicarboxylic acid producing moieties per molecule, with the proviso that the dispersant material is further characterized by a Z factor of from 4,000 to 6,000, wherein the Z factor is determined by the expression: <MATH> wherein [N] is the total nitrogen content of the dispersant material expressed in wt% and Mn is the polyolefin number average molecular weight.
IPC 1-7
IPC 8 full level
C09K 23/22 (2022.01); C09K 23/52 (2022.01); C10L 1/22 (2006.01); C10L 1/224 (2006.01); C10L 1/232 (2006.01); C10L 1/233 (2006.01); C10L 1/24 (2006.01); C10L 10/08 (2006.01); C10L 10/18 (2006.01); C10M 133/52 (2006.01); C10M 149/06 (2006.01); C10M 149/10 (2006.01); C10M 159/12 (2006.01); C10N 30/04 (2006.01)
CPC (source: EP KR)
C10L 1/221 (2013.01 - EP); C10L 1/2493 (2013.01 - EP); C10M 133/00 (2013.01 - KR); C10M 133/52 (2013.01 - EP); C10M 159/12 (2013.01 - EP); C10M 2215/04 (2013.01 - EP); C10M 2215/042 (2013.01 - EP); C10M 2215/24 (2013.01 - EP); C10M 2215/26 (2013.01 - EP); C10M 2217/046 (2013.01 - EP); C10M 2217/06 (2013.01 - EP); C10M 2221/00 (2013.01 - EP); C10M 2221/043 (2013.01 - EP); C10M 2227/00 (2013.01 - EP); C10N 2070/02 (2020.05 - EP)
Citation (search report)
- [XP] EP 0319229 A2 19890607 - EXXON CHEMICAL PATENTS INC [US]
- [XP] EP 0368548 A1 19900516 - EXXON CHEMICAL PATENTS INC [US]
- [A] EP 0295789 A2 19881221 - EXXON CHEMICAL PATENTS INC [US]
- [A] EP 0307132 A1 19890315 - EXXON CHEMICAL PATENTS INC [US]
- [A] US 3366569 A 19680130 - NORMAN GEORGE R, et al
- [AD] US 3445441 A 19690520 - RUSHTON BRIAN M
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0400869 A2 19901205; EP 0400869 A3 19910918; BR 9002565 A 19910813; CA 2015550 A1 19901130; JP H0341193 A 19910221; KR 900018344 A 19901221
DOCDB simple family (application)
EP 90305566 A 19900522; BR 9002565 A 19900530; CA 2015550 A 19900426; JP 13730990 A 19900529; KR 900007835 A 19900530