Patents Assigned to Sakuranomiya Chemical Co., Ltd.
  • Publication number: 20140170348
    Abstract: The present invention provides a highly retort-resistant metal can coating material that can form a pinhole-free coating that excels in strength, solvent resistance, impact resistance, processability, etc., and a metal can coated with the coating material. The metal can coating material contains particles of a thermoplastic resin, and the thermoplastic resin contains at least 10 mass % of a polybutylene naphthalate resin (PBN). Preferably, the particles have an average primary particle diameter in the range from 10 nm to 1000 nm.
    Type: Application
    Filed: July 30, 2012
    Publication date: June 19, 2014
    Applicants: SAKURANOMIYA CHEMICAL CO., LTD., BELL POLYESTER PRODUCTS, INC., DAIWA CAN COMPANY
    Inventors: Masao Yamazaki, Sadateru Tabuka, Tsuyoshi Hasegawa, Hirokazu Konagaya, Katsuya Maruo, Katsumi Ohnishi, Hideaki Tomura
  • Patent number: 7763315
    Abstract: Disclosed are a coating material for metal wherein a thin coating film without pinholes having excellent corrosion resistance, retort resistance, impact resistance, processing resistance, abrasion resistance, adhesiveness to a metal, flavor preservability for contents etc can be formed when applying on a metal plate or a metallic container, and a metallic container on which the coating material is applied. The coating material for metal includes thermoplastic resin particles having an average primary particle size of 10 to 800 nm obtained by cooling a solution of the thermoplastic resin. A process for preparing the coating material for metal comprises steps of (a) obtaining a solution wherein a thermoplastic resin is dissolved into an organic solvent, (b) obtaining a dispersion of particles of the thermoplastic resin having an average primary particle size of 10 to 800 nm by cooling the solution, (c) separating particles from the dispersion and (d) dispersing the separated particles in a solvent.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: July 27, 2010
    Assignee: Sakuranomiya Chemical Co., Ltd
    Inventors: Masao Yamazaki, Yoshiyuki Asai, Yoichi Kitamura, Tsuyoshi Hasegawa
  • Patent number: 4177323
    Abstract: A coated metal sheet adapted for use in producing a drawn and ironed can body. This sheet is coated with a coating composition film completely cured on it, the coating composition consisting of epoxy-phenolic resin prepared by condensing thermosetting type phenol resin with bisphenol epoxy resin-A and olefin type hydrocarbon added thereto in an amount of 0.5 to 2.0 weight percent. This coated metal sheet has excellent drawing and ironing formability and the coating film thereof shows excellent adhesion and coating integrity.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: December 4, 1979
    Assignees: Nippon Steel Corporation, Sakuranomiya Chemical Co., Ltd.
    Inventors: Tatsuro Obi, Teruo Koyama, Tadashi Tanaka, Atsushi Hasegawa