Patents Assigned to Toyo Boseki Kabushiki Kaisha T/u Toyobo Co, Ltd.
  • Patent number: 4666756
    Abstract: A printed transfer paper for decorating a pottery having a base paper, a decorating ink layer and a cover coat layer characterized in that a binder of a decorating ink layer and/or a cover coat agent of a cover coat layer comprise:(I) a polymer or/and copolymer of a compound having a general formula (A):(II) a photopolymerizable compound having a general formula (B):(III) a photopolymerizable compound having a polymerizable double bond(s) in the molecular other than the compound having the general formula (B), and(IV) a photoinitiator.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: May 19, 1987
    Assignee: Toyo Boseki Kabushiki Kaisha T/U Toyobo Co., Ltd.
    Inventors: Kazuhiko Sakata, Hideo Miyake
  • Patent number: 4663431
    Abstract: A process for preparing a polyarylene sulfide which comprises reacting an alkali metal sulfide compound and a polyhalo-substituted aromatic compound in an organic polar solvent in the presence of(A) an alkali metal salt of a phenolic aromatic sulfonic acid of the formula:(HO).sub.m --Ar--(SO.sub.3 M).sub.nwherein Ar is a di- to tetravalent aromatic group having 6 to 24 carbon atoms; M is an alkali metal; and m and n are each 1 or 2,(B) an alkali metal hydroxide and/or an alkali metal alcoholate, and optionally,(C) an alkali metal salt of sulfuric acid.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: May 5, 1987
    Assignee: Toyo Boseki Kabushiki Kaisha T/u Toyobo Co, Ltd.
    Inventors: Tsuguo Fujii, Katsumasa Yamamoto, Tetsuo Aratani, Yoshinori Uegaki