Title:
POLYMERS DERIVED FROM ETHYLENE AND 1-BUTENE FOR USE IN THE PREPARATION OF LUBRICANT DISPERSANT ADDITIVES
Document Type and Number:
WIPO Patent Application WO1994019436
Kind Code:
A3
Abstract:
The invention pertains to oil soluble copolymers derived from ethylene and 1-butene which have a number average molecular weight between about 1,500 and 7,500, at least about 30 percent of all polymer chains terminated with ethylvinylidene groups, and ethylene-derived content of not greater than about 50 weight percent, and which form solutions in mineral oil free of polymer aggregates, as determined by light scattering measurements. Lubricating oil additives, particularly dispersants, produced by the functionalization and derivatization of these copolymers have enhanced performance (e.g., improved dispersancy and pour point) in lubricating oil compositions, attributable in part to the combination of properties characterizing the copolymers.
Inventors:
EMERT JACOB
ROSSI ALBERT
REA SALVATORE
FREDERICK JEFFREY WILLIAM
KIM MAHN WON
ROSSI ALBERT
REA SALVATORE
FREDERICK JEFFREY WILLIAM
KIM MAHN WON
Application Number:
PCT/US1993/012193
Publication Date:
October 13, 1994
Filing Date:
December 14, 1993
Export Citation:
Assignee:
EXXON CHEMICAL PATENTS INC (US)
International Classes:
C08F8/00; C08F210/16; C10M129/95; C10M133/52; C10M133/56; C10M143/06; C10M129/92; C10M157/00; C10M159/16; C08F210/08; C10N20/00; C10N20/04; C10N30/02; C10N30/04; (IPC1-7): C10M143/06; C10M133/52; C10M159/16; C08F8/00; C08F210/16
Domestic Patent References:
| WO1990001503A1 | 1990-02-22 |
Foreign References:
| US4704491A | 1987-11-03 | |||
| US4981605A | 1991-01-01 | |||
| EP0147158A2 | 1985-07-03 | |||
| EP0353935A1 | 1990-02-07 | |||
| US5017299A | 1991-05-21 | |||
| US4943658A | 1990-07-24 |
Other References:
DATABASE WPI Week 8727, Derwent World Patents Index; AN 87-189255
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