Patents by Inventor Mayumi Iida
Mayumi Iida 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: 20240141582Abstract: An oil-resistant agent containing a modified natural product which is a bio-based compound having at least one carboxyl group and in which a hydroxyl group of a carboxyl group is substituted with an R group, or a carboxyl group is substituted with an Ra group. R group: —X—R1 or —X-D-X?—R1. Ra group: wherein X is a direct bond, —O—, —NR11—, or —S—, and R1 is a hydrocarbon group having 1-40 carbon atoms, or a polysiloxane, D is an alkylene group having 1-10 carbon atoms, X? is —C(?O)—O—, —O—(?O)—, —C(?O)—NR12—, or —NR12—C(?O)— (where, R11 and R12 are each hydrogen or an alkyl group having 1-40 carbon atoms). Also disclosed is a textile product, an oil-resistant paper, a food packaging material or a food container each including the oil-resistant agent, as well as a method of treating paper with the oil-resistant agent.Type: ApplicationFiled: December 14, 2023Publication date: May 2, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Akane MATSUMOTO, Ryo AKUTA, Yuko SHIOTANI, Mayumi IIDA, Marina AIHARA, Yukinori TOGO, Tatsunori SAKAMAKI, Masahiro HIGASHI, Yosuke KISHIKAWA
-
Publication number: 20230313448Abstract: Organic fine particles and a slip-resistance agent composition which are capable of providing excellent slip-resistance to a base material. The organic fine particles contain a polymer having a repeating unit formed of: (I) a hydrophobic monomer that has a single ethylenically unsaturated double bond and at least one branched or cyclic hydrocarbon group having 3-40 carbon atoms; and, if necessary, (II) a cross-linking monomer having at least two ethylenically unsaturated double bonds. The slip-resistance agent composition contains (A) the organic fine particles and (B) an aqueous medium.Type: ApplicationFiled: June 7, 2023Publication date: October 5, 2023Applicant: Daikin Industries, Ltd.Inventors: Yuko SHIOTANI, Mayumi IIDA, Marina Aihara, Yoshito Tanaka, Masahiro Higashi, Kanako Takahashi, Norimasa Uesugi
-
Publication number: 20230220217Abstract: An oil repellent agent including a modified natural product having at least one hydroxyl group, wherein a hydrogen atom of the hydroxyl group is replaced with an R group represented by —Y—Z, wherein Y represents a direct bond, —C(?O)—, —C(?O)—NR?— or —C(?S)—NR?—, where R? represents a hydrogen atom or a C1 to C4 alkyl group); and Z represents a hydrocarbon group having 1 to 40 carbon atoms and optionally having a substituent or a polysiloxane. The natural material is a natural product other than starch and preferably is a monosaccharide, a polysaccharide, glycerin or polyglycerin. Also disclosed is a textile product to which the oil-resistant agent is attached, an oil-resistant paper and a method of treating paper with the oil-resistant agent.Type: ApplicationFiled: March 22, 2023Publication date: July 13, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Ryou AKUTA, Akane Matsumoto, Tatsunori Sakamaki, Masahiro Higashi, Hirokazu Aoyama, Yosuke Kishikawa, Yoshito Tanaka, Yuko Shiotani, Marina Aihara, Yukinori Tougo, Wakako Dewa, Mayumi IIDA
-
Publication number: 20230144395Abstract: A method for producing a hollow fine particulate containing a fluorine-containing resin and having a large average particle size. The method includes dispersing a solution containing a fluorine-containing monomer, a phase separation promoter, and a non-polymerizable solvent into water to provide a dispersion, and polymerizing the fluorine-containing monomer to provide a hollow fine particulate containing a fluorine-containing resin.Type: ApplicationFiled: January 6, 2023Publication date: May 11, 2023Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITYInventors: Yoshito TANAKA, Mayumi Iida, Hideto Minami
-
Publication number: 20230122463Abstract: An organic fine particle comprising a core polymer and a shell polymer. The core polymer has a Tg or a melting point of 15° C. or more, the core polymer has a water contact angle of 100° or more, all monofunctional monomers constituting the core polymer are a hydrophobic core monomer of which homopolymer has a water contact angle of 100° or more, the shell polymer has a Tg or a melting point lower than Tg or the melting point of the core polymer, the shell polymer has a water contact angle of less than 100°, and all monofunctional monomers constituting the shell polymer are a water-insoluble shell monomer of which homopolymer is water-insoluble. Also disclosed is a surface coating structure including the organic fine particle and a water-repellant composition including a dispersion of the organic fine particle.Type: ApplicationFiled: December 19, 2022Publication date: April 20, 2023Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITYInventors: Yoshito TANAKA, Mayumi IIDA, Yuko SHIOTANI, Marina AIHARA, Masahiro HIGASHI, Hideto MINAMI
-
Publication number: 20220227907Abstract: An organic fine particle capable of adhering to a substrate under a state having a particle shape, wherein the organic fine particle, when adhered to a substrate, exhibits water-repellency on the substrate, and the organic fine particle is formed of a fluorine-free polymer. Also disclosed is an organic fine particle containing: (1) a hydrophobic monomer which has one ethylenically unsaturated double bond and at least one hydrocarbon group having 3-40 carbon atoms; or (2) a polymer which has a repeating unit formed from a (meth)acrylic monomer having a polydimethylsiloxane group. Also disclosed is a method for producing the organic fine particle and a water-repellent composition which is an aqueous dispersion of the organic fine particle. Also disclosed is a textile product and method for treating the same which includes applying a treatment liquid containing the water-repellent composition to the textile product.Type: ApplicationFiled: March 29, 2022Publication date: July 21, 2022Applicant: Daikin Industries, Ltd.Inventors: Yuko Shiotani, Shouta Shibutani, Rena Inamasu, Yoshito Tanaka, Ryou Akuta, Mayumi Iida, Marina Nakano, Masahiro Higashi, Tomohiro Yoshida
-
Patent number: 10150820Abstract: The present invention aims to provide a production method that can produce an aqueous dispersion containing polyvinylidene fluoride with high productivity. The present invention relates to a method of producing an aqueous dispersion of polyvinylidene fluoride, including: emulsion polymerization of vinylidene fluoride in the presence of a surfactant, an organic peroxide, and water to produce an aqueous dispersion that contains polyvinylidene fluoride. The surfactant has a surface tension of 55 mN/m or smaller when added in an amount of 1000 ppm.Type: GrantFiled: January 6, 2014Date of Patent: December 11, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Mayumi Iida, Yasuhiro Nakano, Katsuhiko Imoto
-
Patent number: 9920214Abstract: Provided is a paint composition which can give a coating having excellent stretchability and further having excellent contamination resistance. A solvent-based paint composition comprises a fluorocopolymer (I), and an organic solvent (II), the fluorocopolymer (I) including: a perhaloolefin structural unit (a) that contains two carbon atoms, a vinyl acetate structural unit (b), a hydroxyl group-containing vinyl monomer structural unit (c) represented by the following formula (1): CH2?CH—O—(CH2)n—OH wherein n is an integer of 2 or more, and a carboxyl group-containing monomer structural unit (d) represented by the following formula (2): R1R2C?CR3—(CH2)m—COOH wherein R1, R2, and R3 are the same as or different from one another, and each a hydrogen atom or a C1-C10 linear or branched alkyl group; and m is an integer of 2 or more.Type: GrantFiled: March 30, 2012Date of Patent: March 20, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yuji Imahori, Hirotoshi Yoshida, Mayumi Iida, Kengo Ito, Yoshito Tanaka, Katsuhiko Imoto, Takuma Kawabe, Akiko Ohya
-
Patent number: 9567413Abstract: Provided is a method for producing a fluoropolymer in the presence of a specific non-fluorinated compound having surface activity. The method shows a high polymerization rate, and suppresses formation of sticking polymerization materials after production of a polymer product. The method includes aqueous dispersion polymerization of a fluoroolefin in the presence of a compound (1) represented by formula (1): wherein R1 and R2 are the same as or different from each other, and each represent a C4 to C12 non-fluorinated saturated hydrocarbon group; and M is an alkali metal, an ammonium salt, or an amine salt.Type: GrantFiled: September 30, 2011Date of Patent: February 14, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Yuji Imahori, Mayumi Iida, Katsuhiko Imoto
-
Publication number: 20150337157Abstract: The present invention aims to provide a production method that can produce an aqueous dispersion containing polyvinylidene fluoride with high productivity. The present invention relates to a method of producing an aqueous dispersion of polyvinylidene fluoride, including: emulsion polymerization of vinylidene fluoride in the presence of a surfactant, an organic peroxide, and water to produce an aqueous dispersion that contains polyvinylidene fluoride. The surfactant has a surface tension of 55 mN/m or smaller when added in an amount of 1000 ppm.Type: ApplicationFiled: January 6, 2014Publication date: November 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Mayumi IIDA, Yasuhiro NAKANO, Katsuhiko IMOTO
-
Publication number: 20150240012Abstract: The present invention provides a method for producing a copolymer containing a perhaloolefin and vinyl acetate by a novel emulsion polymerization method. The present invention relates to a method for producing a perhaloolefin-vinyl acetate copolymer by emulsion polymerization of at least a perhaloolefin having two carbon atoms and vinyl acetate in the presence of a hydrocarbon emulsifier or in the absence of an emulsifier, provided that the hydrocarbon emulsifier excludes a compound (1) represented by the formula (1): wherein R1 and R2 are the same as or different from each other and each represent a C4 to 12 unfluorinated saturated hydrocarbon group; M represents an alkali metal, an ammonium salt, or an amine salt.Type: ApplicationFiled: March 28, 2012Publication date: August 27, 2015Applicant: DAIKIN INDUSTRIES, LTD.,Inventors: Yuji Imahori, Hirotoshi Yoshida, Mayumi Iida, Kengo Ito, Yoshito Tanaka, Katsuhiko Imoto, Takuma Kawabe
-
Publication number: 20140235783Abstract: The present invention aims to provide a composition that forms a film excellent in freeze-thaw resistance, as well as in transparency, weather resistance, adhesion to a base material, and blocking resistance. The present invention relates to a composition comprising polymer particles (A) and a crosslinking agent (B), the polymer particles (A) obtainable by seed polymerization of at least one monomer selected from the group consisting of acrylic acid esters and methacrylic acid esters, an unsaturated carboxylic acid, and a hydrolyzable silyl group-containing monomer in the presence of fluoropolymer particles as seed particles, and the crosslinking agent (B) having at least one group selected from the group consisting of aziridine, carbodiimide, and oxazoline groups.Type: ApplicationFiled: October 1, 2012Publication date: August 21, 2014Inventors: Mayumi Iida, Katsuhiko Imoto, Yoshinari Fukuhara, Shumi Yoshida
-
Publication number: 20140018492Abstract: Provided is a paint composition which can give a coating having excellent stretchability and further having excellent contamination resistance. A solvent-based paint composition comprises a fluorocopolymer (I), and an organic solvent (II), the fluorocopolymer (I) including: a perhaloolefin structural unit (a) that contains two carbon atoms, a vinyl acetate structural unit (b), a hydroxyl group-containing vinyl monomer structural unit (c) represented by the following formula (1): CH2?CH—O—(CH2)n—OH wherein n is an integer of 2 or more, and a carboxyl group-containing monomer structural unit (d) represented by the following formula (2): R1R2C?CR3—(CH2)m—COOH wherein R1, R2, and R3 are the same as or different from one another, and each a hydrogen atom or a C1-C10 linear or branched alkyl group; and m is an integer of 2 or more.Type: ApplicationFiled: March 30, 2012Publication date: January 16, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yuji Imahori, Hirotoshi Yoshida, Mayumi Iida, Kengo Ito, Yoshito Tanaka, Katsuhiko Imoto, Takuma Kawabe, Akiko Ohya
-
Publication number: 20130203950Abstract: Provided is a method for producing a fluoropolymer in the presence of a specific non-fluorinated compound having surface activity. The method shows a high polymerization rate, and suppresses formation of sticking polymerization materials after production of a polymer product. The method includes aqueous dispersion polymerization of a fluoroolefin in the presence of a compound (1) represented by formula (1): wherein R1 and R2 are the same as or different from each other, and each represent a C4 to C12 non-fluorinated saturated hydrocarbon group; and M is an alkali metal, an ammonium salt, or an amine salt.Type: ApplicationFiled: September 30, 2011Publication date: August 8, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yuji Imahori, Mayumi Iida, Katsuhiko Imoto