Patents by Inventor Cheng-Le Zhao
Cheng-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).
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Patent number: 10087333Abstract: The invention relates to a coating composition comprising: (a) 10% to 99.9% by weight of resin based on the total weight of the coating composition; and (b) 0.1% to 20% by weight of a formaldehyde scavenger based on the total weight of the coating composition, wherein the formaldehyde scavenger has at least one active methylene hydrogen and is solid at room temperature. The invention relates to use of a coating composition for removing free formaldehyde from the environment, wherein the formaldehyde scavenger has at least one active methylene hydrogen and is solid at room temperature.Type: GrantFiled: January 20, 2015Date of Patent: October 2, 2018Assignee: BASF SEInventors: Wolfgang Gaschler, Zhong Zeng, Akiko Tanabe, Zhaobin Zhang, Hexin Li, Cheng-Le Zhao
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Publication number: 20160340525Abstract: The invention relates to a coating composition comprising: (a) 10% to 99.9% by weight of resin based on the total weight of the coating composition; and (b) 0.1% to 20% by weight of a formaldehyde scavenger based on the total weight of the coating composition, wherein the formaldehyde scavenger has at least one active methylene hydrogen and is solid at room temperature. The invention relates to use of a coating composition for removing free formaldehyde from the environment, wherein the formaldehyde scavenger has at least one active methylene hydrogen and is solid at room temperature.Type: ApplicationFiled: January 20, 2015Publication date: November 24, 2016Applicant: BASF SEInventors: Wolfgang GASCHLER, Zhong ZENG, Akiko TANABE, Zhaobin ZHANG, Hexin LI, Cheng-Le ZHAO
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Patent number: 8308975Abstract: 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: GrantFiled: October 25, 2011Date of Patent: November 13, 2012Assignee: BASF SEInventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore Michael Smiecinski
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Publication number: 20120041089Abstract: 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: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Patent number: 8084631Abstract: 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: GrantFiled: May 15, 2008Date of Patent: December 27, 2011Assignee: BASF SEInventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Patent number: 7999050Abstract: 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: GrantFiled: August 10, 2006Date of Patent: August 16, 2011Assignee: BASF SEInventor: Cheng-Le Zhao
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Patent number: 7705082Abstract: 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: GrantFiled: January 6, 2006Date of Patent: April 27, 2010Assignee: BASF SEInventors: Robert Shane Porzio, Cheng-Le Zhao, Michael Anchor
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Patent number: 7705081Abstract: 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: GrantFiled: April 22, 2005Date of Patent: April 27, 2010Assignee: BASF SEInventors: Robert Shane Porzio, Cheng-Le Zhao, Michael J. Anchor
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Publication number: 20090286896Abstract: 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: ApplicationFiled: May 15, 2008Publication date: November 19, 2009Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Patent number: 7612126Abstract: 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: GrantFiled: December 1, 2004Date of Patent: November 3, 2009Assignee: BASF AktiengesellschaftInventors: Konrad Roschmann, Joerg Leuninger, Rolf Dersch, Cheng-Le Zhao, Li Zhuo, Terri A. Cunningham
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Publication number: 20080188603Abstract: 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: ApplicationFiled: January 6, 2006Publication date: August 7, 2008Applicant: BASF AKTIENGESELLSCHAFTInventors: Robert Shane Porzio, Cheng-Le Zhao, Michael J. Anchor
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Publication number: 20070191521Abstract: 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: ApplicationFiled: August 10, 2006Publication date: August 16, 2007Applicant: BASF CORPORATIONInventor: Cheng-Le Zhao
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Publication number: 20070105982Abstract: 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: ApplicationFiled: December 1, 2004Publication date: May 10, 2007Applicant: BASF AktiengesellschaftInventors: Konrad Roschmann, Jorg Leuninger, Rolf Dersch, Cheng-Le Zhao, Li Zhuo, Terri Cunningham
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Publication number: 20060241230Abstract: 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: ApplicationFiled: April 22, 2005Publication date: October 26, 2006Applicant: BASF AGInventors: Robert Porzio, Cheng-Le Zhao, Michael Anchor
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Publication number: 20060052502Abstract: 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: ApplicationFiled: May 13, 2003Publication date: March 9, 2006Applicant: BASF CorporationInventors: Cheng-Le Zhao, Terri Cunningham, Li Zhuo, Konrad Roschmann, Joerg Leuninger, Rolf Dersch
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Patent number: 6933415Abstract: 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: GrantFiled: June 6, 2002Date of Patent: August 23, 2005Assignee: BASF AGInventors: Cheng-Le Zhao, Terri A. Cunningham, Li Zhuo
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Publication number: 20050131176Abstract: 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: ApplicationFiled: December 10, 2003Publication date: June 16, 2005Inventor: Cheng-Le Zhao
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Patent number: 6790272Abstract: 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: GrantFiled: September 15, 2000Date of Patent: September 14, 2004Assignee: BASF AktiengesellschaftInventors: Cheng-Le Zhao, Joachim Roser, Rolf Dersch, Roland Baumstark
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Patent number: 6710112Abstract: An aqueous polymer dispersion having a minimum film-forming temperature of below +65° C.Type: GrantFiled: November 1, 2000Date of Patent: March 23, 2004Assignee: BASF AktiengesellschaftInventors: Mario Sandor, Cheng-Le Zhao, Harald Röckel, Uwe Dittrich
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Publication number: 20030229171Abstract: 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: ApplicationFiled: June 6, 2002Publication date: December 11, 2003Inventors: Cheng-Le Zhao, Terri A. Cunningham, Li Zhuo