| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 508221000 | Compound of indeterminate structure, prepared by reacting a heterocyclic compound of known structure; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (oxygen, sulfur, selenium, or tellurium) | 11 |
| 20080293600 | Multiple-Function Dispersant Graft Polymer - A grafted polymer, either polyolefin or polyester, containing monomers associated with sludge and varnish control as well as monomers associated with soot handling to provide a graft polymer exhibiting multiple performance attributes. Also described are methods for manufacturing these novel multiple-function graft polymers via solution and melt processes. Lubricating oil compositions containing these novel multiple-function polymers as an additive that display performance characteristics directed to good soot handling and sludge and varnish control as well as control of viscosity increase are described. | 11-27-2008 |
| 20100210492 | SYNERGISTIC MIXTURE - A synergistic mixture comprising from 1 to 99.9% by weight of compounds having structural elements (I) | 08-19-2010 |
| 508229000 | An additional reactant is an aldehyde or ketone | 1 |
| 20090156440 | Trunk piston engine lubricating oil compositions - This invention encompasses trunk piston engine lubricating oil compositions, comprising a major amount of one or more Group I base oils; and one or more dispersant additives, wherein the concentration of the one or more dispersant additives within the trunk piston engine lubricating oil composition is about 0.2-0.6 wt. % on an actives basis; and methods for making and using the trunk piston engine lubricating oil compositions. | 06-18-2009 |
| 508230000 | An additional reactant is an inorganic compound containing heavy metal or aluminum (e.g., ammonium molybdate, etc.) | 2 |
| 20110312861 | Lubricating oil additive and lubricating oil composition containing same - A molybdated succinimide complex is disclosed which is prepared by a process comprising (a) reacting a succinimide of a polyamine of formula I: | 12-22-2011 |
| 20110312862 | Lubricating oil additive and lubricating oil composition containing same - A molybdated succinimide complex is disclosed which is prepared by a process comprising (a) reacting an alkyl or alkenyl succinimide of a polyamine of formula I | 12-22-2011 |
| 508232000 | The heterocyclic compound reactant contains a carboxylic acid anhydride ring | 6 |
| 508233000 | An additional reactant is an alkadiene polymer | 1 |
| 20140274834 | MULTIPLE FUNCTION DISPERSANT VISCOSITY INDEX IMPROVER - The present invention provides a multiple function dispersant viscosity index improver, a method of making the multiple function dispersant viscosity index improver, and a lubricating oil comprising the multiple function dispersant viscosity index improver. The multiple function dispersant viscosity index improver comprises two different functional groups, each directly grafted to a polymer backbone having graftable sites. The first functional group comprises the reaction product of an acylating agent and a first amine, the first amine comprising an aromatic primary amine, and the second functional group comprises the reaction product of an acylating agent and a second amine, the second amine comprising an aliphatic primary amine. The first functional group provides the dispersant viscosity index improver with soot handling performance attributes and the second functional group provides the dispersant viscosity index improver with sludge and varnish control performance attributes. | 09-18-2014 |
| 508235000 | An additional olefinic reactant is copolymerized with an unsaturated carboxylic acid anhydride so that the anhydride moiety forms part of the polymer backbone (i.e., addition polymerization) | 1 |
| 20140364349 | MIXTURES OF OLEFIN-ESTER COPOLYMER WITH POLYOLEFIN AS VISCOSITY MODIFIER - A lubricant composition of an oil of lubricating viscosity; an esterified copolymer with a backbone comprising units derived from (i) an α-olefin monomer of at least about 6 carbon atoms and (ii) an ethylenically unsaturated carboxylic acid in a mole ratio of 1:3 to 3:1; and a polymer comprising olefin monomer units of 3 to 5 carbon atoms, wherein at least 50 percent by weight of such units contain fewer than 6 carbon atoms and wherein less than 5 percent by weight of such units are ethylene monomer units; exhibits good power transfer efficiency and elastohydrodynamic film thickness. | 12-11-2014 |
| 508238000 | An additional reactant is a polyoxyalkylene compound | 3 |
| 20130172220 | FUNCTIONALIZED OLEFIN COPOLYMERS WITH MONOAMINE TERMINATED POLYETHER AND LUBRICATING OIL COMPOSITIONS - A reaction product, useful as a viscosity index improver in a lubricating oil, reacting: a) an oil soluble ethylene-alpha olefin copolymer comprising from 10 to less than 80 weight % ethylene and greater than 20 up to 90 weight % of at least one C | 07-04-2013 |
| 20140024567 | VISCOSITY IMPROVER GRAFTED WITH UNSATURATED ACYLATING AGENT AND AN ARYLOXYALYLKENE MONOAMINE - Disclosed is an oil-soluble lubricating oil additive composition, suitable for use as a dispersant viscosity index improver in lubricating oils; prepared by the process which comprises reacting a hydrocarbon polymer having a number average molecular weight (M | 01-23-2014 |
| 20160145530 | FUNCTIONALIZED OLEFIN COPOLYMERS WITH MONOAMINE TERMINATED POLYETHER AND LUBRICATING OIL COMPOSITIONS - A method for is disclosed for improving diesel engine wear by lubricating the engine with a composition comprising an oil of lubricating viscosity and based upon the total composition of the lubricating oil composition from about 0.1 to about 2.0 weight % actives of a reaction product of an ethylene-alpha olefin copolymer acylated with maleic anhydride having a number average molecular weight from 5,000 to 120,000 and a hydrocarbyl-substituted poly(oxyalkylene) monoamine represented by the formula: R | 05-26-2016 |
| 508239000 | An additional reactant is a hydroxylamine or an alcoholic or phenolic hydroxy compound | 1 |
| 20090209441 | Maleated vegetable oils and derivatives, as self-emulsifying lubricants in metalworking - A succinated triglyceride oil derived from maleating triglyceride oil from a plant or land animal is described for use as an emulsifying agent for metalworking fluids. The metalworking fluid would comprise water; as an emulsifier this succinated triglyceride, optionally further reacted with water, Group IA and IIA metals, ammonium hydroxide, various amines, alkanolamines, alkoxylated alkanolamines, and polyamines to form a modified emulsifier; and optionally an oil and other additives. | 08-20-2009 |
