Patents by Inventor Changming Zhao
Changming 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: 9938382Abstract: The present invention aims to provide an industrially advantageous method of producing a powdery pseudopolyrotaxane with a high inclusion ratio. The present invention relates to a method for producing a pseudopolyrotaxane, including: an inclusion step of mixing a polyethylene glycol and a cyclodextrin in an aqueous medium to form an aqueous dispersion of pseudopolyrotaxane that contains pseudopolyrotaxane particles in which the polyethylene glycol is included in the cavities of the cyclodextrin molecules in a skewered manner; and a drying step of drying the aqueous dispersion of pseudopolyrotaxane produced in the inclusion step to obtain the pseudopolyrotaxane. In the drying step, the aqueous dispersion of pseudopolyrotaxane is sprayed and dried in a heated gas-stream.Type: GrantFiled: December 5, 2011Date of Patent: April 10, 2018Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Patent number: 9487630Abstract: The present invention aims to provide a method for producing a polyrotaxane which enables industrially advantageous production of a polyrotaxane with a high inclusion rate.Type: GrantFiled: September 9, 2013Date of Patent: November 8, 2016Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.Inventors: Tomoaki Yamasaki, Akira Kimura, Hiroki Okazaki, Changming Zhao
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Patent number: 9475908Abstract: The present invention aims to provide an industrially advantageous method for producing an aqueous dispersion of pseudopolyrotaxane enabling to produce an aqueous dispersion of pseudopolyrotaxane having good fluidity and excellent dispersion stability of the pseudopolyrotaxane particles therein. The present invention relates to a method for producing an aqueous dispersion of pseudopolyrotaxane. The method includes: a mixing step of a dissolving polyethylene glycol and a cyclodextrin in an aqueous medium to prepare a mixed solution; and a cooling step of continuously or intermittently cooling the mixed solution in a state of flux to precipitate pseudopolyrotaxane particles. The pseudopolyrotaxane particles contain the polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner.Type: GrantFiled: December 5, 2011Date of Patent: October 25, 2016Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Patent number: 9266972Abstract: The present invention aims to provide a polyrotaxane composition having excellent storage stability. The present invention relates to a polyrotaxane composition comprising: a polyrotaxane containing a cyclodextrin, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol; and a polyphenol antioxidant.Type: GrantFiled: December 5, 2011Date of Patent: February 23, 2016Assignees: SUMITOMO SEIKA CHEMICALS CO., LTD., ADVANCED SOFTMATERIALS INC.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao, Minoru Iwata, Yuki Hayashi
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Patent number: 9205104Abstract: The present invention aims to provide a hydrophilic modified polyrotaxane composition having excellent storage stability. The present invention relates to a hydrophilic modified polyrotaxane composition comprising: a hydrophilic modified polyrotaxane produced by modifying, with hydrophilic modifying groups, all or part of hydroxy groups on a cyclodextrin of a polyrotaxane containing the cyclodextrin, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol; and a polyphenol antioxidant.Type: GrantFiled: December 5, 2011Date of Patent: December 8, 2015Assignees: SUMITOMO SEIKA CHEMICALS CO., LTD., ADVANCED SOFTMATERIALS INC.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao, Minoru Iwata, Yuki Hayashi
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Patent number: 9120901Abstract: The present invention aims to provide an industrially advantageous method of producing a pseudopolyrotaxane with a high inclusion ratio. The present invention relates to a method for producing a pseudopolyrotaxane, including: an inclusion step of mixing a polyethylene glycol and a cyclodextrin in an aqueous medium to form an aqueous dispersion of pseudopolyrotaxane that contains pseudopolyrotaxane particles in which the polyethylene glycol is included in the cavities of the cyclodextrin molecules in a skewered manner; and a drying step of drying the aqueous dispersion of pseudopolyrotaxane produced in the inclusion step to obtain the pseudopolyrotaxane. In the drying step, the aqueous dispersion of pseudopolyrotaxane is dried in a thin film state.Type: GrantFiled: December 5, 2011Date of Patent: September 1, 2015Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Publication number: 20150240036Abstract: The present invention aims to provide a method for producing a polyrotaxane which enables industrially advantageous production of a polyrotaxane with a high inclusion rate.Type: ApplicationFiled: September 9, 2013Publication date: August 27, 2015Inventors: Tomoaki Yamasaki, Akira Kimura, Hiroki Okazaki, Changming Zhao
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Patent number: 9068051Abstract: The present invention aims to provide a method for producing a refined polyrotaxane which includes an industrially advantageous method of producing a polyrotaxane that has excellent storage stability. The method for producing a refined polyrotaxane includes the step of heat-cleaning a polyrotaxane with a cleaning medium, the polyrotaxane containing cyclodextrin molecules, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol.Type: GrantFiled: December 5, 2011Date of Patent: June 30, 2015Assignees: Sumitomo Seika Chemicals Co., Ltd., Advanced Softmaterials Inc.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Patent number: 8957139Abstract: There is provided a microparticle/polyrotaxane-containing coating with high abrasion resistance and chemical resistance. There are also provided a microparticle/polyrotaxane-containing coating film and a coated article. The microparticle/polyrotaxane-containing coating includes a solvent-based coating material, a modified polyrotaxane having a caprolactone modification group (—CO(CH2)5OH) and microparticles having an average particle size of smaller than 380 nm. The microparticle/polyrotaxane-containing coating film is in the form of a layer of the microparticle/polyrotaxane-containing coating on an article to be coated. The coated article includes the microparticle/polyrotaxane-containing coating film and an article to be coated.Type: GrantFiled: February 9, 2010Date of Patent: February 17, 2015Assignees: Nissan Motor Co., Ltd., Advanced Softmaterials, Inc.Inventors: Tatsuya Suzuki, Kentarou Watanabe, Tetsurou Kikugawa, Masahiko Yamanaka, Changming Zhao, Yuki Hayashi, Yuki Amamoto
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Publication number: 20140066403Abstract: The present invention aims to provide a hydrophilic modified polyrotaxane composition having excellent storage stability. The present invention relates to a hydrophilic modified polyrotaxane composition comprising: a hydrophilic modified polyrotaxane produced by modifying, with hydrophilic modifying groups, all or part of hydroxy groups on a cyclodextrin of a polyrotaxane containing the cyclodextrin, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol; and a polyphenol antioxidant.Type: ApplicationFiled: December 5, 2011Publication date: March 6, 2014Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao, Minoru Iwata, Yuki Hayashi
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Publication number: 20140058078Abstract: The present invention aims to provide a polyrotaxane composition having excellent storage stability. The present invention relates to a polyrotaxane composition comprising: a polyrotaxane containing a cyclodextrin, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol; and a polyphenol antioxidant.Type: ApplicationFiled: December 5, 2011Publication date: February 27, 2014Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao, Minoru Iwata, Yuki Hayashi
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Publication number: 20130331562Abstract: The present invention aims to provide a method for producing a refined polyrotaxane which includes an industrially advantageous method of producing a polyrotaxane that has excellent storage stability. The method for producing a refined polyrotaxane includes the step of heat-cleaning a polyrotaxane with a cleaning medium, the polyrotaxane containing cyclodextrin molecules, a polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner, and a capping group that is placed at each end of the polyethylene glycol and prevents dissociation of the cyclodextrin molecules from the polyethylene glycol.Type: ApplicationFiled: December 5, 2011Publication date: December 12, 2013Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Publication number: 20130317209Abstract: The present invention aims to provide an industrially advantageous method of producing a pseudopolyrotaxane with a high inclusion ratio. The present invention relates to a method for producing a pseudopolyrotaxane, including: an inclusion step of mixing a polyethylene glycol and a cyclodextrin in an aqueous medium to form an aqueous dispersion of pseudopolyrotaxane that contains pseudopolyrotaxane particles in which the polyethylene glycol is included in the cavities of the cyclodextrin molecules in a skewered manner; and a drying step of drying the aqueous dispersion of pseudopolyrotaxane produced in the inclusion step to obtain the pseudopolyrotaxane. In the drying step, the aqueous dispersion of pseudopolyrotaxane is dried in a thin film state.Type: ApplicationFiled: December 5, 2011Publication date: November 28, 2013Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Publication number: 20130296547Abstract: The present invention aims to provide an industrially advantageous method for producing an aqueous dispersion of pseudopolyrotaxane enabling to produce an aqueous dispersion of pseudopolyrotaxane having good fluidity and excellent dispersion stability of the pseudopolyrotaxane particles therein. The present invention relates to a method for producing an aqueous dispersion of pseudopolyrotaxane. The method includes: a mixing step of a dissolving polyethylene glycol and a cyclodextrin in an aqueous medium to prepare a mixed solution; and a cooling step of continuously or intermittently cooling the mixed solution in a state of flux to precipitate pseudopolyrotaxane particles. The pseudopolyrotaxane particles contain the polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner.Type: ApplicationFiled: December 5, 2011Publication date: November 7, 2013Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Publication number: 20130296546Abstract: The present invention aims to provide an industrially advantageous method of producing a powdery pseudopolyrotaxane with a high inclusion ratio. The present invention relates to a method for producing a pseudopolyrotaxane, including: an inclusion step of mixing a polyethylene glycol and a cyclodextrin in an aqueous medium to form an aqueous dispersion of pseudopolyrotaxane that contains pseudopolyrotaxane particles in which the polyethylene glycol is included in the cavities of the cyclodextrin molecules in a skewered manner; and a drying step of drying the aqueous dispersion of pseudopolyrotaxane produced in the inclusion step to obtain the pseudopolyrotaxane. In the drying step, the aqueous dispersion of pseudopolyrotaxane is sprayed and dried in a heated gas-stream.Type: ApplicationFiled: December 5, 2011Publication date: November 7, 2013Applicants: ADVANCED SOFTMATERIALS INC., SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Tomoaki Yamasaki, Shinya Okazaki, Hiroki Okazaki, Shigeki Hamamoto, Changming Zhao
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Patent number: 8450415Abstract: It is intended to provide a crosslinked polyrotaxane formed by crosslinking polyrotaxane molecules via chemical bonds which exhibits excellent optical properties in water or in an aqueous solution of sodium chloride; a compound having this crosslinked polyrotaxane; and a process for producing the same. The above object can be achieved by a crosslinked polyrotaxane having at least two polyrotaxane molecules, wherein linear molecules are included in a skewered-like state at the opening of cyclodextrin molecules and blocking groups are provided at both ends of the linear molecules, so as to prevent the cyclodextrin molecules from leaving, and cyclodextrin molecules in at least two polyrotaxane molecules being bonded to each other via chemical bond, characterized in that hydroxyl (—OH) groups in the cyclodextrin molecules are partly substituted with non-ionic groups.Type: GrantFiled: January 11, 2005Date of Patent: May 28, 2013Assignee: The University of TokyoInventors: Kohzo Ito, Masatoshi Kidowaki, Yuzo Sakurai, Changming Zhao
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Patent number: 8298307Abstract: An abrasive that can impart a mirror finish, glossiness, or the like to a surface of a workpiece by blasting is provided. A crosslinked polyrotaxane compound having a network structure where crosslinking points are circular molecules of polyrotaxane and also having abrasive grains dispersedly mixed therein is obtained by causing chemical bonding between the circular molecules of the polyrotaxane in a state where the abrasive grains and the polyrotaxane are mixed. Then, the crosslinked polyrotaxane compound is granulated to a predetermined grain diameter to obtain a gel-like abrasive where a part of the dispersedly mixed abrasive grain is exposed at the surface. By using the thus-obtained gel-like abrasive in blasting by projecting the abrasive at an angle tilted with respect to a surface of a workpiece, mirror finishing or the like is possible without making the surface of the workpiece pearskin-like.Type: GrantFiled: March 4, 2009Date of Patent: October 30, 2012Assignee: Fuji Manufacturing Co., Ltd.Inventors: Keiji Mase, Shozo Ishibashi, Hirofumi Nakayama, Changming Zhao, Christian Ruslim
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Publication number: 20110319527Abstract: There is provided a microparticle/polyrotaxane-containing coating with high abrasion resistance and chemical resistance. There are also provided a microparticle/polyrotaxane-containing coating film and a coated article. The microparticle/polyrotaxane-containing coating includes a solvent-based coating material, a modified polyrotaxane having a caprolactone modification group (—CO(CH2)5OH) and microparticles having an average particle size of smaller than 380 nm. The microparticle/polyrotaxane-containing coating film is in the form of a layer of the microparticle/polyrotaxane-containing coating on an article to be coated. The coated article includes the microparticle/polyrotaxane-containing coating film and an article to be coated.Type: ApplicationFiled: February 9, 2010Publication date: December 29, 2011Inventors: Tatsuya Suzuki, Kentarou Watanabe, Tetsurou Kikugawa, Masahiko Yamanaka, Changming Zhao, Yuki Hayashi, Yuki Amamoto
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Patent number: 7915792Abstract: An actuator includes a spirally rolled cylindrical sheet body. The sheet body is formed by attaching an electrode on each side of a dielectric elastomer layer. When a voltage is applied to the electrodes, the sheet body is contracted along the direction of its thickness, and expanded in directions perpendicular to its thickness. The actuator is actuated by applying a voltage to the electrodes and stopping the voltage application, so that the cylindrical sheet body is extended and contracted along the direction of the axis. The material forming the dielectric elastomer layer has a low strain region, where the value of a strain based on a stress acting on the dielectric elastomer layer varies from zero to a value that is greater than and close to zero, and a high strain region, where the value of the strain is greater than that in the low strain region. The Young's modulus in the low strain region is less than the Young's modulus in the high strain region.Type: GrantFiled: November 12, 2008Date of Patent: March 29, 2011Assignee: Toyoda Gosei Co., Ltd.Inventors: Hiromitsu Takeuchi, Toru Kobayashi, Junko Suda, Christian Ruslim, Changming Zhao
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Publication number: 20110005142Abstract: An abrasive that can impart a mirror finish, glossiness, or the like to a surface of a workpiece by blasting is provided. A crosslinked polyrotaxane compound having a network structure where crosslinking points are circular molecules of polyrotaxane and also having abrasive grains dispersedly mixed therein is obtained by causing chemical bonding between the circular molecules of the polyrotaxane in a state where the abrasive grains and the polyrotaxane are mixed. Then, the crosslinked polyrotaxane compound is granulated to a predetermined grain diameter to obtain a gel-like abrasive where a part of the dispersedly mixed abrasive grain is exposed at the surface. By using the thus-obtained gel-like abrasive in blasting by projecting the abrasive at an angle tilted with respect to a surface of a workpiece, mirror finishing or the like is possible without making the surface of the workpiece pearskin-like.Type: ApplicationFiled: March 4, 2009Publication date: January 13, 2011Inventors: Keiji Mase, Shozo Ishibashi, Hirofumi Nakayama, Changming Zhao, Christian Ruslim