Patents by Inventor Takafumi KARASAKI

Takafumi KARASAKI 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: 20240262983
    Abstract: Provided is a vinyl chloride resin composition with which color tone variation caused by molding temperature difference is inhibited and that is capable of forming a vinyl chloride resin molded product having few brown spots. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, a uracil compound, zinc acetylacetonate, and a fatty acid metal salt other than a fatty acid zinc salt. The content of the zinc acetylacetonate is not less than 0.5 times the content of the uracil compound, and the content of the fatty acid metal salt is not less than 1.6 times the content of the zinc acetylacetonate. The vinyl chloride resin composition is preferably used in powder molding.
    Type: Application
    Filed: June 23, 2022
    Publication date: August 8, 2024
    Applicant: ZEON CORPORATION
    Inventors: Takafumi KARASAKI, Takanori FUJIWARA
  • Publication number: 20240018338
    Abstract: Provided is a vinyl chloride resin composition with which color tone variation caused by molding temperature difference is inhibited. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, a uracil compound, and either or both of acetylacetone and a metal salt of acetylacetone. The vinyl chloride resin composition is preferably used in powder molding.
    Type: Application
    Filed: December 24, 2021
    Publication date: January 18, 2024
    Applicant: ZEON CORPORATION
    Inventors: Takafumi KARASAKI, Takanori FUJIWARA
  • Publication number: 20230105189
    Abstract: Provided is a vinyl chloride resin composition having excellent powder fluidity. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, and a uracil compound. The content of the plasticizer is not less than 50 parts by mass and not more than 200 parts by mass relative to 100 parts by mass of the vinyl chloride resin, and the content of the uracil compound is not less than 0.05 parts by mass and not more than 3.00 parts by mass relative to 100 parts by mass of the vinyl chloride resin.
    Type: Application
    Filed: March 12, 2021
    Publication date: April 6, 2023
    Applicant: ZEON CORPORATION
    Inventor: Takafumi KARASAKI