Patents by Inventor Daisuke Michitaka
Daisuke Michitaka 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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Publication number: 20220073678Abstract: The present invention provides a (poly)alkylene glycol-containing compound having higher detergency for composite stains of hydrophilic stains and hydrophobic stains than conventional (poly)alkylene glycol-containing compounds. The present invention relates to a (poly)alkylene glycol-containing compound including: a hydrophobic structural moiety (A); a (poly)alkylene glycol moiety (B); and one lactam ring-containing structural unit (C), in its structure, the hydrophobic structural moiety (A) being present in a proportion of 2.5 to 60% by mass in 100% by mass of the (poly)alkylene glycol-containing compound.Type: ApplicationFiled: December 5, 2019Publication date: March 10, 2022Inventors: Daisuke MICHITAKA, Ryusuke KANAO, Tsuyoshi NISHIKAWA
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Publication number: 20210032568Abstract: The present invention provides a polyalkylene glycol-containing compound having higher detergency than conventional polyalkylene glycol-containing compounds. The present invention relates to a polyalkylene glycol-containing compound represented by the following formula (1-1).Type: ApplicationFiled: January 24, 2019Publication date: February 4, 2021Inventors: Daisuke MICHITAKA, Tsuyoshi NISHIKAWA
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Publication number: 20200307881Abstract: The present invention provides a water-soluble film having high solubility in cold water and high extensibility. The present invention also provides a method for simply producing such a water-soluble film. One aspect of the present invention relates to a water-soluble film including a polyamine backbone-containing compound and a water-soluble resin. Another aspect of the present invention relates to a method for producing a water-soluble film containing a polyamine backbone-containing compound and a water-soluble resin including mixing the polyamine backbone-containing compound and the water-soluble resin.Type: ApplicationFiled: December 1, 2016Publication date: October 1, 2020Inventors: Daisuke MICHITAKA, Hirotaka MIZOGUCHI
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Patent number: 10738156Abstract: The present invention aims to provide a polymer capable of well dispersing hydrophobic particles. The present invention relates to a hydrophobic group-containing copolymer including a structural unit (A) derived from a hydrophobic group-containing monomer that is represented by the formula (1) and a structural unit (B) derived from a carboxylic acid-based monomer. The proportion of the structural unit (A) is from 16% by mass or more to 50% by mass or less based on 100% by mass of the structural units derived from all monomers constituting the copolymer, and the copolymer has a weight average molecular weight of 10,000 to 1,000,000.Type: GrantFiled: March 10, 2016Date of Patent: August 11, 2020Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Daisuke Michitaka, Hikaru Takahashi
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Patent number: 10703895Abstract: The present invention provides a water-soluble film having excellent solubility in cold water, high strength, and excellent hard-water resistance. The present invention also provides a method for simply producing such a water-soluble film. One aspect of the present invention relates to a water-soluble film including a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The anionic group-containing polymer excludes an acrylic acid homopolymer. Another aspect of the present invention relates to a method for producing a water-soluble film that includes a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The method includes mixing a polymer containing an anionic group other than a sulfonic acid (salt) group and a water-soluble resin.Type: GrantFiled: December 19, 2016Date of Patent: July 7, 2020Assignee: Nippon Shokubai Co., Ltd.Inventors: Daisuke Michitaka, Masami Hattori, Hirotaka Mizoguchi
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Publication number: 20190002683Abstract: The present invention provides a water-soluble film having excellent solubility in cold water, high strength, and excellent hard-water resistance. The present invention also provides a method for simply producing such a water-soluble film. One aspect of the present invention relates to a water-soluble film including a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The anionic group-containing polymer excludes an acrylic acid homopolymer. Another aspect of the present invention relates to a method for producing a water-soluble film that includes a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The method includes mixing a polymer containing an anionic group other than a sulfonic acid (salt) group and a water-soluble resin.Type: ApplicationFiled: December 19, 2016Publication date: January 3, 2019Inventors: Daisuke MICHITAKA, Masami HATTORI, Hirotaka MIZOGUCHI
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Publication number: 20180355165Abstract: The present invention provides a water-soluble film having high solubility in cold water and high extensibility. The present invention also provides a method for simply producing such a water-soluble film with particularly preferred features. The present invention relates to a water-soluble film including a grafted polymer and a water-soluble resin, and also relates to a water-soluble film including a grafted polymer. The present invention also relates to a method for producing a water-soluble film containing a grafted polymer and a water-soluble resin including mixing the grafted polymer and the water-soluble resin.Type: ApplicationFiled: December 1, 2016Publication date: December 13, 2018Inventors: Daisuke MICHITAKA, Hirotaka MIZOGUCHI
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Publication number: 20180118886Abstract: The present invention aims to provide a polymer capable of well dispersing hydrophobic particles. The present invention relates to a hydrophobic group-containing copolymer including a structural unit (A) derived from a hydrophobic group-containing monomer that is represented by the formula (1) and a structural unit (B) derived from a carboxylic acid-based monomer. The proportion of the structural unit (A) is from 16% by mass or more to 50% by mass or less based on 100% by mass of the structural units derived from all monomers constituting the copolymer, and the copolymer has a weight average molecular weight of 10,000 to 1,000,000.Type: ApplicationFiled: March 10, 2016Publication date: May 3, 2018Inventors: Daisuke MICHITAKA, Hikaru TAKAHASHI
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Patent number: 9834632Abstract: The present invention provides a carboxyl group-containing polymer and a composition containing the polymer which exhibit excellent anti-soil redeposition ability in fabric washing. The carboxyl group-containing polymer includes specific ratios of a structure unit (a) derived from an ether bond-containing monomer (A), a structure unit (b) derived from a sulfonic acid group-containing monomer (B), and a structure unit (c) derived from an acrylic acid-based monomer (C), and has a specific weight average molecular weight. The carboxyl group-containing polymer composition contains the carboxyl group-containing polymer and a specific amount of a hydrogen sulfite adduct of the acrylic acid-based monomer (C).Type: GrantFiled: August 31, 2012Date of Patent: December 5, 2017Assignee: Nippon Shokubai Co., Ltd.Inventors: Atsuro Yoneda, Daisuke Michitaka, Xiaoli Wang, Brian Joseph Loughnane, Jeffrey Scott Dupont
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Patent number: 9428602Abstract: Provided is a (meth)acrylic acid-based copolymer containing, as structural units, a structural unit derived from a sulfonic acid (salt) group-containing monomer and a structural unit derived from (meth)acrylic acid (salt), the copolymer being capable of expressing an excellent effect on the dispersion of hydrophobic particles. Also provided is a method of producing such (meth)acrylic acid-based copolymer. A (meth)acrylic acid-based copolymer of the present invention contains: 1 mass % to 20 mass % of a structural unit (a) derived from an ether bond-containing hydrophobic monomer (A) represented by a specific structure; 1 mass % to 50 mass % of a structural unit (b) derived from a sulfonic acid (salt) group-containing monomer (B) represented by a specific structure; and 30 mass % to 98 mass % of a structural unit (c) derived from (meth)acrylic acid (salt) (C).Type: GrantFiled: September 11, 2014Date of Patent: August 30, 2016Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Daisuke Michitaka, Atsuro Yoneda, Kenji Kuwada
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Publication number: 20160194423Abstract: Provided is a (meth)acrylic acid-based copolymer containing, as structural units, a structural unit derived from a sulfonic acid (salt) group-containing monomer and a structural unit derived from (meth)acrylic acid (salt), the copolymer being capable of expressing an excellent effect on the dispersion of hydrophobic particles. Also provided is a method of producing such (meth)acrylic acid-based copolymer. A (meth)acrylic acid-based copolymer of the present invention contains: 1 mass % to 20 mass % of a structural unit (a) derived from an ether bond-containing hydrophobic monomer (A) represented by a specific structure; 1 mass % to 50 mass % of a structural unit (b) derived from a sulfonic acid (salt) group-containing monomer (B) represented by a specific structure; and 30 mass % to 98 mass % of a structural unit (c) derived from (meth)acrylic acid (salt) (C).Type: ApplicationFiled: September 11, 2014Publication date: July 7, 2016Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Daisuke MICHITAKA, Atsuro YONEDA, Kenji KUWADA
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Publication number: 20150307642Abstract: The present invention provides a carboxyl group-containing polymer and a composition containing the polymer which exhibit excellent anti-soil redeposition ability in fabric washing. The carboxyl group-containing polymer includes specific ratios of a structure unit (a) derived from an ether bond-containing monomer (A), a structure unit (b) derived from a sulfonic acid group-containing monomer (B), and a structure unit (c) derived from an acrylic acid-based monomer (C), and has a specific weight average molecular weight. The carboxyl group-containing polymer composition contains the carboxyl group-containing polymer and a specific amount of a hydrogen sulfite adduct of the acrylic acid-based monomer (C).Type: ApplicationFiled: August 31, 2012Publication date: October 29, 2015Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Atsuro YONEDA, Daisuke MICHITAKA, Xiaoli WANG, Brian Joseph LOUGHNANE, Jeffrey Scott DUPONT
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Patent number: 9090725Abstract: The present invention aims to provide an amino group-containing polymer that is excellent in anti-soil redeposition property during washing and compatibility with surfactants, a method for producing thereof, and a detergent composition containing the amino group-containing polymer. The present invention is the amino group-containing polymer comprising a structural unit derived from an amino group-containing monomer having a specific structure and a structural unit derived from a nonionic monomer and/or an amino group-containing monomer other than the amino group-containing monomer described above.Type: GrantFiled: September 9, 2011Date of Patent: July 28, 2015Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Atsuro Yoneda, Daisuke Michitaka
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Patent number: 8969284Abstract: The present invention relates to a laundry detergent or a cleaning composition, preferably a granular detergent product, comprising a carboxyl-group containing polymer, which is useful in improving whiteness and/or anti-soil redeposition. Processes for making and methods of using the laundry detergent or cleaning composition are also encompassed by the present invention.Type: GrantFiled: August 15, 2013Date of Patent: March 3, 2015Assignee: The Procter & Gamble CompanyInventors: Xiaoli Wang, Brian Joseph Loughnane, Xiaoyan Liu, Jeffrey Scott Dupont, Atsuro Yoneda, Daisuke Michitaka
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Patent number: 8921584Abstract: A composition is provided that contains an intermediate for a water-soluble monomer, wherein this intermediate is suitable for producing a water-soluble polyalkylene glycol-type monomer that has a polymerizable terminal double bond, and suitable for the production of water-soluble polymer, and moreover allows the high-yield production of water-soluble polymer. A process of producing this composition and a water-soluble monomer-containing composition obtained therefrom are also provided. A water-soluble monomer is also provided that can be used as a starting material for a water-soluble polymer that even at high hardnesses exhibits an excellent capacity to capture metal ions such as the calcium ion and magnesium ion, an excellent anti-gelation performance, an excellent anti-soil redeposition performance, a better anti-dye transfer performance than in the past, and also an excellent compatibility with surfactants.Type: GrantFiled: December 3, 2010Date of Patent: December 30, 2014Assignee: Nippon Shokubai Co, LtdInventors: Atsuro Yoneda, Makoto Saito, Aki Tsukajima, Daisuke Michitaka, Mitsuaki Makino
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Publication number: 20140066352Abstract: The present invention relates to a laundry detergent or a cleaning composition, preferably a granular detergent product, comprising a carboxyl-group containing polymer, which is useful in improving whiteness and/or anti-soil redeposition. Processes for making and methods of using the laundry detergent or cleaning composition are also encompassed by the present invention.Type: ApplicationFiled: August 15, 2013Publication date: March 6, 2014Applicant: The Procter & Gamble CompanyInventors: Xiaoli WANG, Brian Joseph LOUGHNANE, Xiaoyan LIU, Jeffrey Scott DUPONT, Atsuro YONEDA, Daisuke MICHITAKA
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Patent number: 8586687Abstract: The present invention has an object to provide a polyalkylene glycol-based polymer having high anti-soil redeposition ability in washing treatment and having high compatibility with surfactants. The polyalkylene glycol-based polymer includes: a structure unit (a) derived from a polyalkylene glycol-based monomer (A) of a specific structure, and a structure unit (b) derived from a carboxyl group-containing monomer (B) at specific ratios.Type: GrantFiled: December 17, 2010Date of Patent: November 19, 2013Assignee: Nippon Shokubai Co., Ltd.Inventors: Atsuro Yoneda, Akiko Hemmi, Sachiko Nakanishi, Daisuke Michitaka
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Publication number: 20130172506Abstract: The present invention aims to provide an amino group-containing polymer that is excellent in anti-soil redeposition property during washing and compatibility with surfactants, a method for producing thereof, and a detergent composition containing the amino group-containing polymer. The present invention is the amino group-containing polymer comprising a structural unit derived from an amino group-containing monomer having a specific structure and a structural unit derived from a nonionic monomer and/or an amino group-containing monomer other than the amino group-containing monomer described above.Type: ApplicationFiled: September 9, 2011Publication date: July 4, 2013Applicant: NIPPON DHOKUNSI CO., LTD.Inventors: Atsuro Yoneda, Daisuke Michitaka
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Publication number: 20130023641Abstract: Provided is a 2-methylene glutaric acid copolymer that displays excellent heavy metal capturing ability and fine hydrogen peroxide stabilizing ability when used as a fiber treatment agent. The 2-methylene glutaric acid copolymer includes a structural unit derived from a 2-methylene glutaric acid (salt) at a proportion of 30 to 70 mass % (acid form equivalent) with respect to 100 mass % of structural units derived from total monomers, and a structural unit derived from an unsaturated carboxylic acid monomer at a proportion of 30 to 70 mass % (acid form equivalent) with respect to 100 mass % of the structural units derived from the total monomers.Type: ApplicationFiled: March 22, 2011Publication date: January 24, 2013Applicant: NIPPON SHOKUBAI CO LTDInventors: Daisuke Michitaka, Atsuro Yoneda, Sachiko Nakanishi, Makoto Saito
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Publication number: 20120238717Abstract: A composition is provided that contains an intermediate for a water-soluble monomer, wherein this intermediate is suitable for producing a water-soluble polyalkylene glycol-type monomer that has a polymerizable terminal double bond, and suitable for the production of water-soluble polymer, and moreover allows the high-yield production of water-soluble polymer. A process of producing this composition and a water-soluble monomer-containing composition obtained therefrom are also provided. A water-soluble monomer is also provided that can be used as a starting material for a water-soluble polymer that even at high hardnesses exhibits an excellent capacity to capture metal ions such as the calcium ion and magnesium ion, an excellent anti-gelation performance, an excellent anti-soil redeposition performance, a better anti-dye transfer performance than in the past, and also an excellent compatibility with surfactants.Type: ApplicationFiled: December 3, 2010Publication date: September 20, 2012Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Atsuro Yoneda, Makoto Saito, Aki Tsukajima, Daisuke Michitaka, Mitsuaki Makino