Patents by Inventor Le Zhao

Le Zhao 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).

  • Publication number: 20120041089
    Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 16, 2012
    Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
  • Patent number: 8084631
    Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: December 27, 2011
    Assignee: BASF SE
    Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
  • Patent number: 7999050
    Abstract: A method of making a composition comprising reacting, in a reactor, a non-halogenated acetoacetate group containing monomer, at least one additional monomer, and a base, wherein at least a portion of the base is fed to the reactor during reaction. Also, a composition comprising an aqueous polymer dispersion that is a product of a method comprising reacting a non-halogenated acetoacetate moiety containing monomer, at least one additional monomer, and a base, wherein the base is fed to the reaction during reaction, wherein the composition has a lower viscosity than a second composition, wherein the second composition is prepared from the same materials as the composition, and the second composition is made by a method wherein the base is added to the second composition after a reaction to form the second composition.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: August 16, 2011
    Assignee: BASF SE
    Inventor: Cheng-Le Zhao
  • Patent number: 7705081
    Abstract: An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or Cl-C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: April 27, 2010
    Assignee: BASF SE
    Inventors: Robert Shane Porzio, Cheng-Le Zhao, Michael J. Anchor
  • Patent number: 7705082
    Abstract: An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or C1-C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: April 27, 2010
    Assignee: BASF SE
    Inventors: Robert Shane Porzio, Cheng-Le Zhao, Michael Anchor
  • Publication number: 20090286896
    Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
  • Patent number: 7612126
    Abstract: The present invention relates to an aqueous coating composition having excellent freeze-thaw stability and a low-VOC content, comprising a multi-stage polymer dispersion comprising (a) an inner phase comprising at least one latex polymer derived from at least one monomer and at least one polymerizable alkoxylated surfactant having the structure: R1—R2 wherein R1 is an allyl group selected from the group consisting of CH3—CH?CH— and CH2?CH—CH2—, or an acrylic group and R2 is a radical comprising at least two carbon atoms and at least one oxyethylene or oxypropylene unit; (b) an outer phase having a glass transition temperature of from 30° C. to 110° C. containing at least one ethylenic unsaturated monomer (c) at least one pigment; (d) water; and (e) less than 3.0% by weight based on the total weight of the aqueous coating composition of anti-freeze agents.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: November 3, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Konrad Roschmann, Joerg Leuninger, Rolf Dersch, Cheng-Le Zhao, Li Zhuo, Terri A. Cunningham
  • Publication number: 20080188603
    Abstract: An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or C1-C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.
    Type: Application
    Filed: January 6, 2006
    Publication date: August 7, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Robert Shane Porzio, Cheng-Le Zhao, Michael J. Anchor
  • Publication number: 20070191521
    Abstract: A method of making a composition comprising reacting, in a reactor, a non-halogenated acetoacetate group containing monomer, at least one additional monomer, and a base, wherein at least a portion of the base is fed to the reactor during reaction. Also, a composition comprising an aqueous polymer dispersion that is a product of a method comprising reacting a non-halogenated acetoacetate moiety containing monomer, at least one additional monomer, and a base, wherein the base is fed to the reaction during reaction, wherein the composition has a lower viscosity than a second composition, wherein the second composition is prepared from the same materials as the composition, and the second composition is made by a method wherein the base is added to the second composition after a reaction to form the second composition.
    Type: Application
    Filed: August 10, 2006
    Publication date: August 16, 2007
    Applicant: BASF CORPORATION
    Inventor: Cheng-Le Zhao
  • Publication number: 20070105982
    Abstract: The present invention relates to an aqueous coating composition having excellent freeze-thaw stability and a low-VOC content, comprising a multi-stage polymer dispersion comprising (a) an inner phase comprising at least one latex polymer derived from at least one monomer and at least one polymerizable alkoxylated surfactant having the structure: R1—R2 wherein R1 is an allyl group selected from the group consisting of CH3—CH?CH— and CH2?CH—CH2—, or an acrylic group and R2 is a radical comprising at least two carbon atoms and at least one oxyethylene or oxypropylene unit; (b) an outer phase having a glass transition temperature of from 30° C. to 110° C. containing at least one ethylenic unsaturated monomer (c) at least one pigment; (d) water; and (e) less than 3.0% by weight based on the total weight of the aqueous coating composition of anti-freeze agents.
    Type: Application
    Filed: December 1, 2004
    Publication date: May 10, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Konrad Roschmann, Jorg Leuninger, Rolf Dersch, Cheng-Le Zhao, Li Zhuo, Terri Cunningham
  • Publication number: 20060241230
    Abstract: An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or Cl—C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 26, 2006
    Applicant: BASF AG
    Inventors: Robert Porzio, Cheng-Le Zhao, Michael Anchor
  • Publication number: 20060052502
    Abstract: The present invention is an aqueous coating composition having excellent freeze-thaw stability and a low-VOC content. The aqueous coating composition of the invention includes at least one latex polymer derived from at least one monomer and at least one polymerizable alkoxylated surfactant, at least one pigment, and water. In accordance with the invention, less than 3.0% by weight of anti-freeze agents based on the total weight of the aqueous coating composition are used in the composition. The present invention also includes a method of preparing an aqueous coating composition such as a latex paint including the above components.
    Type: Application
    Filed: May 13, 2003
    Publication date: March 9, 2006
    Applicant: BASF Corporation
    Inventors: Cheng-Le Zhao, Terri Cunningham, Li Zhuo, Konrad Roschmann, Joerg Leuninger, Rolf Dersch
  • Patent number: 6933415
    Abstract: The present invention is an aqueous coating composition having excellent freeze-thaw stability and a low-VOC content. The aqueous coating composition of the invention includes at least one latex polymer derived from at least one monomer and at least one polymerizable alkoxylated surfactant, at least one pigment, and water. In accordance with the invention, less than 3.0% by weight of anti-freeze agents based on the total weight of the aqueous coating composition are used in the composition. The present invention also includes a method of preparing an aqueous coating composition such as a latex paint including the above components.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: August 23, 2005
    Assignee: BASF AG
    Inventors: Cheng-Le Zhao, Terri A. Cunningham, Li Zhuo
  • Publication number: 20050131176
    Abstract: A method of making a composition comprising reacting, in a reactor, a non-halogenated acetoacetate group containing monomer, at least one additional monomer, and a base, wherein at least a portion of the base is fed to the reactor during reaction. Also, a composition comprising an aqueous polymer dispersion that is a product of a method comprising reacting a non-halogenated acetoacetate moiety containing monomer, at least one additional monomer, and a base, wherein the base is fed to the reaction during reaction, wherein the composition has a lower viscosity than a second composition, wherein the second composition is prepared from the same materials as the composition, and the second composition is made by a method wherein the base is added to the second composition after a reaction to form the second composition.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 16, 2005
    Inventor: Cheng-Le Zhao
  • Patent number: 6790272
    Abstract: The invention relates to aqueous pigment preparations containing i) at least one copolymer P of ethylenically unsaturated monomers M in the form of an aqueous polymer dispersion which contains between 0.1 and 1.5 weight %, in relation to the total weight of the copolymer P, of polymerized itaconic acid as acid monomer M1, its salts and/or anhydride, where up to 50 weight % of the itaconic acid can be substituted by another monomer having at least one acid group or a neutralized acid group, and whose glass transition temperature TG lies between −10 and +50° C.; ii) at least one inorganic pigment; iii) possibly inorganic fillers; and iv) standard additives. The invention also relates to the use of the copolymers P containing itaconic acid for improving the wet-abrasion resistance of polymer-bound coatings containing pigments.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Cheng-Le Zhao, Joachim Roser, Rolf Dersch, Roland Baumstark
  • Patent number: 6710112
    Abstract: An aqueous polymer dispersion having a minimum film-forming temperature of below +65° C.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: March 23, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Mario Sandor, Cheng-Le Zhao, Harald Röckel, Uwe Dittrich
  • Publication number: 20030229171
    Abstract: The present invention is an aqueous coating composition having excellent freeze-thaw stability and a low-VOC content. The aqueous coating composition of the invention includes at least one latex polymer derived from at least one monomer and at least one polymerizable alkoxylated surfactant, at least one pigment, and water. In accordance with the invention, less than 3.0% by weight of anti-freeze agents based on the total weight of the aqueous coating composition are used in the composition. The present invention also includes a method of preparing an aqueous coating composition such as a latex paint including the above components.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Inventors: Cheng-Le Zhao, Terri A. Cunningham, Li Zhuo
  • Patent number: 6645563
    Abstract: Aqueous formulations comprising as film-forming constituent at least one copolymer P, synthesized from ethylenically unsaturated monomers M, are used for coating shaped mineral articles, the copolymer P having a glass transition temperature in the range from −25 to +80° C. and the monomers M comprising more than 0.2% by weight and up to 5% by weight, based on their overall weight, of itaconic acid as monomer M1.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Cheng-Le Zhao, Manfred Schwartz, Bertold Bechert, Harm Wiese, Wolfgang Hümmer
  • Patent number: 6638998
    Abstract: The present invention is an aqueous coating composition and method of preparing same that uses certain polyoxyalkylene phosphate surfactants to increase the compatibility of inorganic pigments such as TiO2 with latex polymer binders to reduce the clustering of the inorganic pigment particles in the aqueous coating composition. The aqueous coating composition of the invention includes at least one polyoxyalkylene phosphate surfactant having the following structure: wherein m is 1 or 2, n is an integer from 1 to 100, R1 is C1-C5 alkyl, O—R2 is an alkylphenol residue wherein R2 has the structure C6H4—CpH2p+1 or O—R2 is a linear or branched alkyl alcohol residue wherein R2 has the structure CpH2p+1, and p is an integer from 1 to 30. The aqueous composition further includes at least one latex polymer, at least one inorganic pigment and water.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: October 28, 2003
    Assignee: BASF AG
    Inventors: Cheng-Le Zhao, Uwe Dittrich
  • Patent number: 6605662
    Abstract: A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous dispersion of a polymer 1 having a glass transition temperature Tg1, then dissolving further, comparatively hard monomers in the dispersed particles of the polymer 1, and subsequently carrying out free-radical polymerization of said monomers dissolved in said particles.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: August 12, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Cheng-Le Zhao, Joachim Roser, Eckehardt Wistuba, Bernhard Schuler, Klemens Mathauer