Lactone modified viscosity modifiers useful in oleaginous compositions

Patent · Tue Jun 12 04:00:00 EDT 1990

OSTI ID:6672436

Gutierrez, A; Lundberg, R D

This patent describes a lactone modified reaction product useful as a viscosity index improver additive for lubricating oil compositions. It comprises: the reaction produce of: oil soluble ethylene copolymer comprising within the range of about 15 to 90 wt.% ethylene and about 10 to 85 wt.% of one or more C{sub 3} to C{sub 28} alpha-olefin, having a number average molecular weight within a range of about 15,000 to 500,000 and grafted with ethylenically unsaturated C{sub 4}--C{sub 10} monocarboxylic acid or anhydride or C{sub 4}--C{sub 0} dicarboxylic acid or anhydride wherein the carboxylic acid groups or anhydride groups are located on vicinal carbon atoms; amine selected from the group consisting of amines having at least two primary amine groups and amines having at least one primary amine group and at least one secondary amine group; long chain hydrocarbyl substituted succinic anhydride or acid having 25 to 400 carbon atoms; and lactone.

• Assignee: Exxon Chemical Patents Inc., Linden, NJ (USA)
• Patent Number(s): US 4933098; A
• Application Number: PPN: US 7-178396A
• OSTI ID: 6672436
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
ADDITIVES
AMINES
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
DICARBOXYLIC ACIDS
ESTERS
HETEROCYCLIC COMPOUNDS
LACTONES
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POLYETHYLENES
POLYMERS
POLYOLEFINS
SUCCINIC ACID
VISCOSITY