Patents Assigned to Daiso Co., Ltd.
  • Patent number: 7135576
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali metal alkoxide.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: November 14, 2006
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Patent number: 7115736
    Abstract: A novel process for preparing imidazopyran derivatives of the formula: wherein R1 is halogen atom, hydrogen atom, C1 to C3 alkyl group, aryl group, or aryl group substituted by C1 to C3 alkyl group, by using dinitroimidazole and 2,3-epoxy-1-propanol as starting materials and being followed by five steps.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: October 3, 2006
    Assignee: Daiso Co., Ltd.
    Inventors: Junzo Otera, Akihiro Orita
  • Publication number: 20060216518
    Abstract: The invention provides a vulcanized rubber laminate obtained by firmly bonding an unvulcanized epichlorohydrin rubber layer and an organic peroxide-containing fluororubber layer. The laminate is obtained by thermal adhesion a layer of an unvulcanized epichlorohydrin rubber composition to a layer of an unvulcanized fluororubber composition. The epichlorohydrin rubber composition comprises 1) an unvulcanized epichlorohydrin rubber containing 3 to 15 mol % of allyl glycidyl ether unit, 2) quinoxaline-based vulcanizing agents, mercaptotriazine-based vulcanizing agents or bisphenol-based vulcanizing agents, and 3) 1,8-diazabicyclo(5,4,0)undecene-7 salts, 1,5-diazabicyclo(4,3,0)nonene-5 salts, quaternary ammonium salts, quaternary phosphonium salts, basic white carbons or an alkaline metal salt of higher fatty acid the fluororubber composition comprises an fluororubber and an organic peroxide-based vulcanizing agent.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 28, 2006
    Applicant: DAISO CO., LTD.
    Inventors: Toshiyuki Funayama, Shigeru Shoji, Yasushi Hamura, Toyofumi Otaka
  • Patent number: 7112428
    Abstract: The present invention is to provide a gene having asymmetric hydrolase activity which is useful for synthesis of an optically active carboxylic acid, its antipode ester, and lactone, and a hydroxycarboxylic ester asymmetric hydrolase enzyme (EnHCH) derived from Enterobacter sp. DS-S-75 strain (FERM BP-5494) which is bacteria belonging to the genus Enterobacter, a EnHCH gene shown by base sequence of SEQ.ID.NO: 1, a gene encoding a protein having an amino acid sequence of SEQ.ID.NO: 2, and E. coli DH5? (pKK-EnHCH) deposited to International Patent Organism Depositary, National Institute of Advanced Industrial Science and Technology as a deposition No. FERM BP-08466.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: September 26, 2006
    Assignee: Daiso Co., Ltd.
    Inventors: Atsushi Nakagawa, Toshio Suzuki, Atsuhiko Shinmyo, Ko Kato, Hideaki Idogaki
  • Patent number: 7084285
    Abstract: A photoaffinity-labeled sphingomyelin analog of the following formula: wherein R1 is C1-20 alkylene group, R5 is C1-20 alkyl group, aryl group or C1-6 alkyl group substituted by aryl group, Z is photoaffinity-labeled group and Me is methyl group, or an optically active compound thereof.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: August 1, 2006
    Assignee: Daiso Co., Ltd.
    Inventors: Shigeo Katsumura, Toshikazu Hakogi, Toshihiko Shigenari
  • Publication number: 20060128857
    Abstract: A composition for epihalohydrin vulcanized rubber excellent in heat resistance while keeping good vulcanization rate and store stability, comprising (a) an epihalohydrin robber, (b) a metal soap, (c) an acid acceptor, and (d) a vulcanizing agent, the composition further preferably containing (e) a fatty acid for suppressing vulcanization, or preferably containing (f) an alcohol for accelerating vulcanization.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 15, 2006
    Applicant: DAISO CO., LTD.
    Inventors: Toyofumi Otaka, Shigeru Shoji, Yasushi Hamura, Toshiyuki Funayama
  • Patent number: 7033505
    Abstract: The present invention provides packings for high performance liquid chromatography whose residual silanol groups are extremely reduced and which remarkably prevent tailing of basic compounds. Endcapping agents represented by the following general formula [II] are reacted in liquid phases or gas phases with silica gel which is surface-modified with chemical modifying agents to link the endcapping agents to the residual silanol groups on the silica gel surface. In the formula, R3 and R4, the same or different, are alkyl having one to four carbon atoms, and n is the factor of structural unit and an integer of 2 to 10.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 25, 2006
    Assignee: Daiso Co., Ltd
    Inventor: Takeshi Urano
  • Publication number: 20060030721
    Abstract: A process for producing a glycidyl ether and an optically active compound thereof with high yield and an optically high purity comprising reacting an alcohol with epihalohydrin in a base to thereby produce a glycidyl ether, the reaction performed in a two-layer system of a nonaqueous organic solvent and an aqueous solvent.
    Type: Application
    Filed: May 29, 2003
    Publication date: February 9, 2006
    Applicant: DAISO CO., LTD
    Inventors: Yoshiro Furukawa, Yasushi Miki, Keisuke Taegashi
  • Publication number: 20060019359
    Abstract: A method for producing an optically active compound comprising: a first step of culturing a microorganism capable of assimilating either the R-isomer or the S-isomer of a compound represented by Formula (1): wherein R is a methyl, ethyl, propyl, chloromethyl, or hydroxyethyl group, in a culture medium whose Ca2+ concentration at the beginning of culturing is controlled and which contains a racemic mixture of the compound as a carbon source; and a second step of recovering the optically active compound remaining in the culture broth.
    Type: Application
    Filed: April 29, 2005
    Publication date: January 26, 2006
    Applicant: DAISO CO., LTD.
    Inventors: Toshio Suzuki, Kouji Nishikawa, Atsushi Nakagawa
  • Patent number: 6949684
    Abstract: An object of the present invention is to provide a process wherein 1,2,4-butanetriol can be obtained safely, easily and inexpensively without causing problems concerning wastewater. A malic diester, 3-hydroxy-?-butyrolactone or 3,4-dihydroxybutanoate represented by the following formulae (I), or a mixture thereof is reduced with sodium borohydride in an organic solvent to give 1,2,4-butanetriol represented by the following formula (II). When an optically active substance is used as the above-mentioned starting compound, substantially no recemization occurs during the reduction, and optically active 1,2,4-butanetriol is obtained.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: September 27, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Kousei Ikai, Masafumi Mikami, Yoshiro Furukawa, Takeshi Urano, Seiji Ohtaka
  • Patent number: 6946566
    Abstract: A process for preparing regioselectively an optically active 1-halogeno-2-hydroxypropyl compound of the following formula; wherein X is halogen atom and Nu is a heteroatom having a substituent, and an optically active glycidyl compound of the formula; which comprises reacting an optically active epihalohydrin of the formula; with a neucleophilic agent, in the presence of a metal complex of the formula; wherein n is an integer of 0, 1 or 2, Y1, Y2 and Y3 are hydrogen atom, etc., and Y2 and Y3 may form a ring such as benzene, A is a counterion and M is a metal ion, and further subjecting the compound (4) to reaction with a base to prepare the optically active glycidyl compound (5).
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: September 20, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Keisuke Yaegashi, Yoshiro Furukawa
  • Patent number: 6878491
    Abstract: A polyether copolymer having a weight-average molecular weight of 104 to 107, formed from 3 to 30% by mol of a repeating unit derived from propylene oxide, 96 to 69% by mol of a repeating unit derived from ethylene oxide, and 0.01 to 15% by mol of a crosslinkable repeating unit derived from a reactive oxirane compound, gives a provide a crosslinked solid polymer electrolyte which is superior in processability, moldability, mechanical strength, flexibility and heat resistance, and has markedly improved ionic conductivity.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: April 12, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Katsuhito Miura, Masanori Yanagida, Hiroki Higobashi, Shouhei Matsui
  • Patent number: 6875875
    Abstract: A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali metal alkoxide.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: April 5, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiro Furukawa, Yasushi Miki
  • Patent number: 6858351
    Abstract: An electrolyte composition, which contains (1) a polymer having an ether linkage optionally having a crosslinkable functional group, (2) an additive containing an organic silicon compound having an ethylene oxide unit, and (3) an electrolyte salt compound, is excellent in mechanical properties and ionic conductivity.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: February 22, 2005
    Assignee: Daiso Co., Ltd.
    Inventors: Katsuhito Miura, Shouhei Matsui, Seiji Nakamura, Yoshihiko Wada
  • Patent number: 6835325
    Abstract: A crosslinking agent containing a polyallyl ether compound having at least one hydroxyl group derived from a glycidyl group and at least two allyl groups can be used for the production of a highly water-absorbing polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof, has a high solubility in aqueous solution of the monomer and gives a highly water-absorbing polymer having water absorptivity required at practical levels.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: December 28, 2004
    Assignee: Daiso Co., Ltd.
    Inventors: Shin-ichiro Nakamura, Yasumi Shimizu, Tohru Matsutomi
  • Publication number: 20040245104
    Abstract: In order to discharge current from a gas diffusion electrode in an electrolytic unit cell including a gas chamber, the gas diffusion electrode is electrically connected to the wall surface of the gas chamber having conductivity through an electric connecting element in partial contact with the gas diffusion electrode
    Type: Application
    Filed: March 30, 2004
    Publication date: December 9, 2004
    Applicants: CHLORINE ENGINEERS CORP., LTD., MITSUI CHEMICALS, INC., TOAGOSEI CO., LTD., KANEKA CORPORATION, TOSOH CORPORATION, ASAHI GLASS COMPANY, LIMITED, ASAHI KASEI CHEMICALS CORPORATION, DAISO CO., LTD., TOKUYAMA CORPORATION
    Inventors: Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Shinji Katayama, Kiyohito Asaumi
  • Patent number: 6815478
    Abstract: The present invention provides a chlorine-containing polymer vulcanizing composition with improved preservation stability. The present invention is a chlorine-containing polymer vulcanizing composition obtained by blending (a) a zeolite compound, (b) a vulcanizing agent, and (c) an optional organic vulcanization accelerator. The zeolite compound can be natural zeolite, an A-type, X-type, or Y-type synthetic zeolite, a sodalite, natural or synthetic mordenite, ZSM-5, or a metal substitution product thereof. The zeolite compound is preferably an activated zeolite compound. With respect to 100 parts by weight of chlorinated polyethylene, (a) preferably 0.5 to 30 parts by weight, more preferably 5 to 25 parts by weight, of the zeolite compound, (b) preferably 0.1 to 5 parts by weight, more preferably 0.5 to 3 parts by weight, of the vulcanizing agent, and (c) preferably 0.5 to 3 mol, more preferably 0.7 to 1.5 mol, of the vulcanization accelerator with respect to 1 mol of (b) the vulcanizing agent are blended.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: November 9, 2004
    Assignee: Daiso Co., Ltd.
    Inventors: Kazuya Tsujimura, Kozo Misumi, Toshiyuki Funayama, Kazunori Yokoyama
  • Publication number: 20040133008
    Abstract: A compound of the formula (I) 1
    Type: Application
    Filed: October 28, 2003
    Publication date: July 8, 2004
    Applicants: FUJISAWA PHARMACEUTICAL CO., LTD., DAISO CO., LTD.
    Inventors: Yoshikazu Inoue, Takeshi Terasawa, Hisashi Takasugi, Akira Nagayoshi, Koji Ueshima, Masae Sawada, Yoshiro Furukawa, Masafumi Mikami, Kazumasa Hinoue, Daisuke Fukumoto
  • Patent number: 6727088
    Abstract: A process for preparation of (R)-1,2-propanediol which comprises cultivating a microorganism belonging to genus Pseudomonas or genus Alcaligenes which has ability to assimilate (S)-1,2-propanediol as a single carbon source, in a culture medium containing racemic 1,2-propanediol as a single carbon source and then isolating the remaining (R)-1,2-propanediol from the culture broth.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 27, 2004
    Assignee: Daiso Co., Ltd.
    Inventors: Toshio Suzuki, Hideaki Idogaki, Atsushi Nakagawa, Miki Ueda
  • Publication number: 20040024261
    Abstract: A process for preparing a butanetriol derivative of the formula (1) useful as intermediates of medicines 1
    Type: Application
    Filed: July 28, 2003
    Publication date: February 5, 2004
    Applicant: Daiso Co., Ltd.
    Inventors: Makoto Hirata, Masafumi Mikami, Yoshiro Furukawa