Patents by Inventor Tomomasa Tezuka

Tomomasa Tezuka 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: 20230272188
    Abstract: Provided are an additive composition capable of improving the mechanical characteristics and color tone of a cellulose nanofiber-containing resin composition, a resin composition, and a molded article of the resin composition. The additive composition includes (A) a cellulose nanofiber and (D) a nucleating agent.
    Type: Application
    Filed: July 15, 2021
    Publication date: August 31, 2023
    Applicant: ADEKA CORPORATION
    Inventors: Tomomasa TEZUKA, Chansu SON
  • Patent number: 11613628
    Abstract: Provided is a production method that can produce an olefin resin composition having excellent long-term stability and providing a sufficient stabilization effect to the olefin resin composition. This production method is a method of producing an olefin resin composition that contains a polyolefin resin polymerized with, an addition of a mixture of a phenolic antioxidant represented by the following Formula (1) and a phosphite compound represented by the following Formula (2) or (3), and an organoaluminum compound or a mixed solvent of an organoaluminum compound and an organic solvent, to a catalyst system or a polymerization system before or during the polymerization of the olefin monomer.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: March 28, 2023
    Assignee: ADEKA CORPORATION
    Inventors: Changsu Son, Tomomasa Tezuka, Kazukiyo Nomura
  • Patent number: 11339231
    Abstract: Provided are: an olefin-based resin composition that can yield a molded article having excellent transparency in which coloration is inhibited; a method for producing the olefin-based resin composition; and a molded article of the olefin-based resin composition. The olefin-based resin composition contains, with respect to 100 parts by mass of an olefin polymer: 0.001 to 10 parts by mass of one or more compounds (A) represented by Formula (1) wherein R1 to R4 each independently represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms; R5 represents a hydrogen atom or methyl; m represents 1 or 2; and M1 represents, for example, a hydrogen atom; and 0.001 to 10 parts by mass of a fatty acid metal salt (B) represented by Formula (2) wherein R6 represents a group having 10 to 30 carbon atoms and introduced from an aliphatic organic acid; n represents 1 or 2; and M2 represents an alkali metal atom or a multivalent metal inorganic group.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: May 24, 2022
    Assignee: ADEKA CORPORATION
    Inventors: Changsu Son, Tomomasa Tezuka, Kazukiyo Nomura
  • Publication number: 20210246373
    Abstract: Provided are: a polyphosphate amine salt composition which does not foam during processing, has excellent workability and excellent weather resistance, and can impart excellent flame retardancy to synthetic resins; a polyphosphate amine salt flame retardant composition; a flame-retardant synthetic resin composition containing the same; and a molded article thereof. The polyphosphate amine salt composition contains an orthophosphate amine salt and a polyphosphate amine salt, and the orthophosphate amine salt is contained in an amount of 0.1 to 6.0% by mass. An amine in the polyphosphate amine salt composition is preferably melamine or piperazine.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 12, 2021
    Applicant: ADEKA CORPORATION
    Inventors: Genta KOKURA, Yutaka YONEZAWA, Tomomasa TEZUKA, Michio NAKAMURA, Yuri YOKOTA, Kohei OMORI
  • Publication number: 20200317830
    Abstract: Provided are: an olefin-based resin composition that can yield a molded article having excellent transparency in which coloration is inhibited; a method for producing the olefin-based resin composition; and a molded article of the olefin-based resin composition. The olefin-based resin composition contains, with respect to 100 parts by mass of an olefin polymer: 0.001 to 10 parts by mass of one or more compounds (A) represented by Formula (1) wherein R1 to R4 each independently represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms; R5 represents a hydrogen atom or methyl; m represents 1 or 2; and M1 represents, for example, a hydrogen atom; and 0.001 to 10 parts by mass of a fatty acid metal salt (B) represented by Formula (2) wherein R6 represents a group having 10 to 30 carbon atoms and introduced from an aliphatic organic acid; n represents 1 or 2; and M2 represents an alkali metal atom or a multivalent metal inorganic group.
    Type: Application
    Filed: November 7, 2018
    Publication date: October 8, 2020
    Applicant: ADEKA CORPORATION
    Inventors: Changsu SON, Tomomasa TEZUKA, Kazukiyo NOMURA
  • Publication number: 20200010643
    Abstract: Provided is a production method that can produce an olefin resin composition having excellent long-term stability and providing a sufficient stabilization effect to the olefin resin composition. This production method is a method of producing an olefin resin composition that contains a polyolefin resin polymerized with an addition of a mixture of a phenolic antioxidant represented by the following Formula (1) and a phosphite compound represented by the following Formula (2) or (3), and an organoaluminum compound or a mixed solvent of an organoaluminum compound and an organic solvent, to a catalyst system or a polymerization system before or during the polymerization of the olefin monomer, in which method 0.001 to 5 parts by mass of the phenolic antioxidant represented by Formula (1) and 0.
    Type: Application
    Filed: February 28, 2018
    Publication date: January 9, 2020
    Applicant: ADEKA CORPORATION
    Inventors: Changsu SON, Tomomasa TEZUKA, Kazukiyo NOMURA
  • Patent number: 9212307
    Abstract: The present invention provides a stabilizer composition comprising a monoester and diester of alkylmercapto carboxylic acid of bisphenol sulfide, which is capable of maintaining good ease of handling without causing precipitation of solids even in low temperature environments.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: December 15, 2015
    Assignee: ADEKA CORPORATION
    Inventors: Naoshi Kawamoto, Yoshinori Negishi, Takashi Ayabe, Tsuyoshi Urushihara, Tomomasa Tezuka, Shingo Yamada
  • Patent number: 8968611
    Abstract: The present invention provides a process of solidifying a phosphoric ester-based flame retardant in which high-level purification is not required and stress load is not employed. In the process of solidifying a phosphoric ester-based flame retardant, a seed crystal is added at a temperature of not higher than 55° C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by mass of a phosphoric ester compound in a molten state, which compound is represented by the following Formula (I): (wherein, R1 and R2 each independently represent a hydrogen atom or a methyl group; and n represents a number of 1 to 5). It is preferred that the amount of the phosphoric ester compound represented by the aforementioned Formula (I) wherein n is 1 be less than 90% by mass and that R1 and R2 be a hydrogen atom.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: March 3, 2015
    Assignee: Adeka Corporation
    Inventors: Tetsuo Kamimoto, Yuki Tanaka, Tomomasa Tezuka, Hisashi Murase
  • Publication number: 20110084242
    Abstract: The present invention provides a process of solidifying a phosphoric ester-based flame retardant in which high-level purification is not required and stress load is not employed. In the process of solidifying a phosphoric ester-based flame retardant, a seed crystal is added at a temperature of not higher than 55° C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by mass of a phosphoric ester compound in a molten state, which compound is represented by the following Formula (I): (wherein, R1 and R2 each independently represent a hydrogen atom or a methyl group; and n represents a number of 1 to 5). It is preferred that the amount of the phosphoric ester compound represented by the aforementioned Formula (I) wherein n is 1 be less than 90% by mass and that R1 and R2 be a hydrogen atom.
    Type: Application
    Filed: June 9, 2008
    Publication date: April 14, 2011
    Inventors: Tetsuo Kaminito, Yuki Tanaka, Tomomasa Tezuka, Hisashi Murase