Polymeric particle acid neutralizers with reactive epoxy core for engine oils

Patent · Tue Feb 04 00:00:00 EST 1986

OSTI ID:5982417

Theodore, A N; Chattha, M S

This patent describes a lubricating oil composition which consist of a major proportion of a lubricating base oil and about 0.1 to 15 weight percent of an acid neutralizing additive which is made up of polymer particles (a) bearing pendant epoxide groups, and (b) having a diameter of about 500-10,000 A. The particles are formed by the free radical addition polymerization of: (a) between about 50 and about 100 weight percent of ethylenically unsaturated monomers bearing an opoxide group, and (b) 0 tp to about 50 weight percent of other monoethylenically unsaturated monomers; in the presence of: (I) a non-polar organic liquid which is a solvent for the polymerizable monomers, but a non-solvent for the resultant polymer, and (II) polymeric dispersion stabilizer containing at least two segments, with one segment being solvated by the non-polar organic liquid and the second segment being of different polarity than the first segment and relatively insoluble in the non-polar organic liquid. The second segment of the stabilizer is chemically attached to the polymerized particle.

• Assignee: Ford Motor Co., Dearborn, MI
• Patent Number(s): US 4568474
• OSTI ID: 5982417
• Resource Relation: Patent File Date: Filed date 7 Jan 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
LUBRICATING OILS
ACID NEUTRALIZING CAPACITY
ADDITIVES
CHEMICAL COMPOSITION
EPOXIDES
MONOMERS
PARTICLE SIZE
PARTICLES
POLYMERIZATION
POLYMERS
QUANTITY RATIO
SOLVATION
SOLVENTS
CHEMICAL REACTIONS
CHEMISTRY
ENGINES
HEAT ENGINES
LUBRICANTS
OILS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SIZE
WATER CHEMISTRY
330100* - Internal Combustion Engines