Patents by Inventor Qinggao Ma
Qinggao Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11952551Abstract: The presently claimed invention relates to a gear oil composition having a kinematic viscosity at 40° C. in the range of ?68 to ?1000 cSt when measured in accordance with ASTM D445. The gear oil composition is useful as a lubricant in a gear box, especially in a wind turbine gear box.Type: GrantFiled: December 18, 2019Date of Patent: April 9, 2024Assignee: BASF SEInventors: Qinggao Ma, Rene Koschabek, Philippe Rabbat, Henrik Heinemann, Karolin Monz, Frank Rittig, Nawid Kashani, Markus Scherer
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Publication number: 20220064563Abstract: The presently claimed invention relates to a gear oil composition having a kinematic viscosity at 40° C. in the range of ?68 to ?1000 cSt when measured in accordance with ASTM D445. The gear oil composition is useful as a lubricant in a gear box, especially in a wind turbine gear box.Type: ApplicationFiled: December 18, 2019Publication date: March 3, 2022Inventors: Qinggao MA, Rene KOSCHABEK, Philippe RABBAT, Henrik HEINEMANN, Karolin MONZ, Frank RITTIG, Nawid KASHANI, Markus SCHERER
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Patent number: 8648020Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are prepared without gel formation by heating to 280-360° C. under high pressure in a sealed reactor a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a hydrocarbon solvent having a boiling point below 280° C. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.Type: GrantFiled: April 26, 2012Date of Patent: February 11, 2014Assignee: Chemtura CorporationInventors: Qinggao Ma, Mitchel Cohn
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Patent number: 8580716Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280-360° C. a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a combination of high boiling hydrocarbon and organic diluent, wherein water is more than 8%, typically more than 10% of the reaction mixture. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.Type: GrantFiled: June 23, 2011Date of Patent: November 12, 2013Assignee: Chemtura CorporationInventors: Qinggao Ma, Cyril A. Migdal, Kirk A. Schlup, John-Louis DiFlavio, Ronald J. Muir
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Publication number: 20130005620Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are prepared without gel formation by heating to 280-360° C. under high pressure in a sealed reactor a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a hydrocarbon solvent having a boiling point below 280° C. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.Type: ApplicationFiled: April 26, 2012Publication date: January 3, 2013Applicant: CHEMTURA CORPORATIONInventors: Qinggao Ma, Mitchel Cohn
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Publication number: 20120015853Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280-360° C. a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a combination of high boiling hydrocarbon and organic diluent, wherein water is more than 8%, typically more than 10% of the reaction mixture. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.Type: ApplicationFiled: June 23, 2011Publication date: January 19, 2012Applicant: CHEMTURA CORPORATIONInventors: Qinggao Ma, Cyril A. Migdal, Kirk A. Schlup, John-Louis DiFlavio, Ronald J. Muir
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Patent number: 7846884Abstract: Lubricating oil compositions containing (a) at least one oil of lubricating viscosity and (b) an effective amount of at least one thio-functionalized phenylenediamine compound of the general formula: wherein R1, R2, R3, R4 and n are as defined herein are provided. Methods of operating an engine employing the lubricating oil composition are also provided.Type: GrantFiled: November 14, 2006Date of Patent: December 7, 2010Assignee: Chemtura CorporationInventor: Qinggao Ma
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Patent number: 7847125Abstract: A compound having the formula: R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring. The C3-C30 ring may be substituted with one or more substituents or unsubstituted. The C3-C30 ring may contain one or more heteroatoms. The C3-C30 ring may be saturated, partially unsaturated, or fully unsaturated.Type: GrantFiled: November 16, 2007Date of Patent: December 7, 2010Assignee: Chemtura CorporationInventors: Qinggao Ma, Cyril Migdal
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Patent number: 7838703Abstract: A diaromatic amine compound having the general formula: wherein R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring, and R3 is an allyl, benzyl, or methallyl group. R4, R5, and R6 are independently hydrogen, C1-C30 alkyl group, C2-C30 alkenyl group, C3-C12 cycloalkyl group, C5-C25 aryl group, C6-C25 arylalkyl group, or C1-C30 alkoxy group.Type: GrantFiled: November 16, 2007Date of Patent: November 23, 2010Assignee: Chemtura CorporationInventors: Qinggao Ma, Cyril Migdal
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Publication number: 20100048432Abstract: A surfactant blend of a low molecular weight surfactant and a high molecular weight surfactant to be used in an aqueous flooding. The surfactant blend may be neutralized with an alkali or alkaline agent. The surfactant blend may be mixed with a polymer. Surfactant blends of the present invention increase oil recoveries from oil reservoirs.Type: ApplicationFiled: May 26, 2009Publication date: February 25, 2010Inventors: Michael T. Costello, Charles F. Irwin, Qinggao Ma, Naureen Stone
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Patent number: 7608568Abstract: Tetraaromatic diamine compounds having the general formula: are provided wherein a is 0-3; b, c and d independently are integers from 0-5, R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a substituted or unsubstituted C3 to about C30 ring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms, a is 0-3; b, c and d independently are integers from 0-5, R3, R4, R5 and R6 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, a substituted or unsubstituted C3-C12 cycloalkyl, a substituted or unsubstituted C5-C25 aryl, a substituted or unsubstituted C6-C25 arylalkyl, a straight or branched C1-C30 alkoxy group optionally substituted with one or more substituents or two R4 substituents and/or two R5 substituents and/or two R6 substituents on adjacent carbon atoms of the aromatic ring associated therewith can be joined together to formType: GrantFiled: February 13, 2007Date of Patent: October 27, 2009Assignee: Chemtura CorporationInventor: Qinggao Ma
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Publication number: 20090240092Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one nitroso inhibitor of the structure: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, nitro, nitroso, halogen, COOR wherein R is hydrogen or alkyl, alkyl, and heteroatom-substituted alkyl; or adjacent groups R1, R2, R3, and R4 can be taken together to form a substituted or unsubstituted fused six-membered ring. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) at least one nitroso compound of the above-described structure.Type: ApplicationFiled: June 5, 2009Publication date: September 24, 2009Inventors: Qinggao MA, William A. Wortman, Jay Wang, Paul E. Stott
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Patent number: 7585909Abstract: Disclosed herein are p-urea phenyl derivatives of the formula: wherein R1 and R2 are independently selected hydrocarbyl groups. These derivatives are useful as haze reducing agents in propylene polymers and copolymers.Type: GrantFiled: November 16, 2006Date of Patent: September 8, 2009Assignee: Chemtura CorporationInventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
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Patent number: 7572849Abstract: Disclosed herein are urea phenyl derivatives of the formula: wherein each R is an independently selected hydrocarbyl group and n is 2 or 3, and their use as nucleating agents for propylene polymers.Type: GrantFiled: November 18, 2005Date of Patent: August 11, 2009Assignee: Chemtura CorporationInventors: Qinggao Ma, William A. Wortman, Jin-yun Wang, Huiling Ding, Roy Russell, Leigh C. Allen, Paul E. Stott, John Wefer, David J. Sikora
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Patent number: 7569630Abstract: Disclosed herein are aromatic amide derivatives of the formulae: wherein X1 and X2 are independently selected from the group consisting of —OH, —OR, —OM, —NH2, and —NHR; M is a metal; and R, R1, and R2 are independently selected hydrocarbyl groups.Type: GrantFiled: June 14, 2006Date of Patent: August 4, 2009Assignee: Chemtura CorporationInventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
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Patent number: 7553896Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one nitroso inhibitor of the structure: wherein R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, nitro, nitroso, halogen, COOR wherein R is hydrogen or alkyl, alkyl, and heteroatom-substituted alkyl; or adjacent groups R1, R2, R3, and R4 can be taken together to form a substituted or unsubstituted fused six-membered ring. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) at least one nitroso compound of the above-described structure.Type: GrantFiled: June 17, 2005Date of Patent: June 30, 2009Assignee: Chemtura CorporationInventors: Qinggao Ma, William A. Wortman, Jay Wang, Paul E. Stott
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Publication number: 20090131290Abstract: A compound having the formula: R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring. The C3-C30 ring may be substituted with one or more substituents or unsubstituted. The C3-C30 ring may contain one or more heteroatoms. The C3-C30 ring may be saturated, partially unsaturated, or fully unsaturated.Type: ApplicationFiled: November 16, 2007Publication date: May 21, 2009Inventors: Qinggao Ma, Cyril Migdal
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Publication number: 20090131293Abstract: A diaromatic amine compound having the general formula: wherein R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a C3-C30 ring, and R3 is an allyl, benzyl, or methallyl group. R4, R5, and R6 are independently hydrogen, C1-C30 alkyl group, C2-C30 alkenyl group, C3-C12 cycloalkyl group, C5-C25 aryl group, C6-C25 arylalkyl group, or C1-C30 alkoxy group.Type: ApplicationFiled: November 16, 2007Publication date: May 21, 2009Inventors: Qinggao Ma, Cyril Migdal
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Publication number: 20070293609Abstract: Disclosed herein are aromatic amide derivatives of the formulae: wherein X1 and X2 are independently selected from the group consisting of —OH, —OR, —OM, —NH2, and —NHR; M is a metal; and R, R1, and R2 are independently selected hydrocarbyl groups.Type: ApplicationFiled: June 14, 2006Publication date: December 20, 2007Inventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
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Publication number: 20070272894Abstract: Tetraaromatic diamine compounds having the general formula: are provided wherein a is 0-3; b, c and d independently are integers from 0-5, R1 and R2 together with the carbon atoms to which they are bonded are joined together to form a substituted or unsubstituted C3 to about C30 ring, saturated, partially unsaturated or fully unsaturated, optionally substituted with one or more heteroatoms, a is 0-3; b, c and d independently are integers from 0-5, R3, R4, R5 and R6 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, a substituted or unsubstituted C3-C12 cycloalkyl, a substituted or unsubstituted C5-C25 aryl, a substituted or unsubstituted C6-C25 arylalkyl, a straight or branched C1-C30 alkoxy group optionally substituted with one or more substituents or two R4 substituents and/or two R5 substituents and/or two R6 substituents on adjacent carbon atoms of the aromatic ring associated therewith can be joined together to formType: ApplicationFiled: February 13, 2007Publication date: November 29, 2007Inventor: Qinggao Ma