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    PRODUCTION OF PERFLUOROCARBOXYLIC ACID HALIDE
    1.
    发明专利
    PRODUCTION OF PERFLUOROCARBOXYLIC ACID HALIDE 失效

    公开(公告)号：JPH1180071A

    公开(公告)日：1999-03-23

    申请号：JP26284297

    申请日：1997-09-09

    Applicant: TOYOTA CENTRAL RES & DEV ,  AGENCY IND SCIENCE TECHN

    Inventor： TANIGUCHI TAKUMI ,  KAWAKADO MASAYA ,  SATO NORIO ,  ONO TAIZO ,  ABE TAKASHI ,  HAYASHI EIJI

    IPC: C07D265/30 ,  C07B41/10 ,  C07C51/60 ,  C07C53/46

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound useful as an intermediate for synthesizing detergents, water-repellents, lubricants, liquid crystal materials and the like by allowing an organic phosphorous compound to act on a perfluorocarboxylic acid. SOLUTION: This method for producing a perfluorocarbxylic acid halide comprises reacting an organic phosphorus compound of the formula: X2 PR3 [X is F, chlorine, bromine, iodine; R is a linear or cyclic alkyl, a (substituted) aryl, an aralkyl] with a perfluorocarboxylic acid preferably represented by the formula: RfCOOH [Rf is a 1-20C perfluoroalkyl which may be substituted by a substitutent having a perfluorocyclic structure containing one or more heterogeneous atoms such as 0 and F1 preferably in an equivalent ratio of (2-3):1 in a solvent (e.g. benzene, toluene or ether) or in the absence of the solvent preferably at 110-170 deg.C. Since a by-product is not produced, the purification of the product is unnecessary, and the reaction is carried out under vacuum.

    PERFLUOROCARBOXYLIC ESTER AND ITS PRODUCTION
    2.
    发明专利
    PERFLUOROCARBOXYLIC ESTER AND ITS PRODUCTION 失效

    公开(公告)号：JPH10338659A

    公开(公告)日：1998-12-22

    申请号：JP16335597

    申请日：1997-06-05

    Applicant: AGENCY IND SCIENCE TECHN ,  CHIKYU KANKYO SANGYO GIJUTSU

    Inventor： ONO TAIZO ,  HAYASHI EIJI ,  ABE TAKASHI ,  OKUHARA KUNIO

    IPC: C07D265/30 ,  C07C67/04 ,  C07C69/63 ,  C07D207/10

    Abstract: PROBLEM TO BE SOLVED: To more simply obtain the subject compound that is useful as a detergent, a water repellent, a lubricant or a liquid crystal through a simple process by direct addition reaction of a perfluorocarboxylic acid to an olefin under heating in the absence of solvent. SOLUTION: One equivalent amount of a perfluoro group-bearing carboxylic acid of the formula: RfCO2 H [Rf is a (substituted) 1-20 perfluoroalkyl] and 1-6 equivalent amount, 3-4 equivalent amount of an olefin of the formula: CHR =CHR [R is H, a 1-5C alkyl; R is a (substituted) 1-20C alkyl] as octene-1 are heated without solvent at 80-180 deg.C, preferably at 120-160 deg.C to effect their regio-selective addition reaction thereby giving the objective compound such as 2-octyl perfluoromorpholinoacetate in high yield through a simpler process.

    BROMINATED PERFLUOROCARBON AND USE THEREOF
    3.
    发明专利
    BROMINATED PERFLUOROCARBON AND USE THEREOF 失效

    公开(公告)号：JPH0892174A

    公开(公告)日：1996-04-09

    申请号：JP25145094

    申请日：1994-09-19

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： ABE TAKASHI ,  ONO TAIZO ,  FUKAYA HARUHIKO ,  HAYASHI EIJI

    IPC: C07D223/04 ,  A61K49/04 ,  C07C211/15 ,  C07D211/36 ,  C07D265/30

    Abstract: PURPOSE: To obtain the new compound useful as a contrast medium, especially an X-ray contrast medium, having excellent X-ray shielding performance and organism compatibility and low accumulation in an organism free from toxicity. CONSTITUTION: A brominated perfluorocarbon of formula I [R is a (Br- substituted) 2-5C perfluoroalkyl; R is a 2-5C perfluoroalkyl, a 5 to 7-membered ring structure integrated with a group of formula II, preferably a ring of formula III; A is a group of the formula (CF2 )n ((n) is an integer of 3-5) or formula IV (R and R are each F or a 1-3C perfluoroalkyl; R is F or Br)] such as a compound having a structural formula of formula V. The compound of formula I, for example, is obtained by electrolytically fluorinating a raw material and brominating in the case of a monobromide derivative.

    NEW BIFUNCTIONAL PERFLUORO COMPOUND AND PRODUCTION THEREOF
    4.
    发明专利
    NEW BIFUNCTIONAL PERFLUORO COMPOUND AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH03236367A

    公开(公告)日：1991-10-22

    申请号：JP3091690

    申请日：1990-02-09

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： ABE TAKASHI ,  HAYASHI EIJI ,  FUKAYA HARUHIKO

    IPC: C07C303/02 ,  C07C303/22 ,  C07C309/80

    Abstract: NEW MATERIAL:Perfluoroalkane sulfonyl fluoride iodide expressed by formula I (n is 2-5). EXAMPLE:1-tetrafluoroethane sulfonyl fluoride iodide. USE:Useful as a synthetic intermediate of surfactant, agricultural chemical, medical drug or a fluorine-containing product such as fluorine-based ionomer, or a raw material for iodine optical dissociation laser, etc. PREPARATION:Perfluorocarboxylic acid fluoride expressed by formula II is reacted with lithium iodide at 100-300 deg.C, preferably 150-230 deg.C to afford the compound expressed by formula I. Said lithium iodide is preferably anhydride and using amount of said lithium iodide is preferably stoichiometric amount or a little excess amount of the stoichiometric amount. Besides, e.g. omega-(fluorosulfonyl) perfluorocarboxylic acid fluoride or perfluoro-beta-sultone is used as a starting raw material.

    PRODUCTION OF PERFLUOROALKYL IODIDE
    6.
    发明专利
    PRODUCTION OF PERFLUOROALKYL IODIDE 失效

    公开(公告)号：JP2000103749A

    公开(公告)日：2000-04-11

    申请号：JP27856698

    申请日：1998-09-30

    Applicant: AGENCY IND SCIENCE TECHN ,  RES INST INNOVATIVE TECH EARTH

    Inventor： ONO TAIZO ,  HAYASHI EIJI ,  ABE TAKASHI ,  OKUHARA KUNIO

    IPC: C07D265/30 ,  C07B61/00 ,  C07C17/361 ,  C07C17/363 ,  C07C19/16

    Abstract: PROBLEM TO BE SOLVED: To produce the subject, compound in high yield by heating an acid iodide of a perfluorocarboxylic acid in a state thereof kept in contact with a specific metal and carrying out a decarbonylating reaction. SOLUTION: (A) An acid iodide of a perfluorocarboxylic acid represented preferably by the formula RfCOI (Rf is a perfluoroalkyl which may have a perfluoro cyclic substitution group containing a heteroatom as a ring constituent atom) is heated in a state thereof kept in contact with (B) a zero-valent metal having preferably 1-500 μm average particle diameter (e.g. copper or nickel) to carry out a decarbonylating reaction. In the above reaction, the component B is preferably used in an amount of 0.01-2 mol based on 1 mol of the component A. The reactional temperature is preferably 80-160 deg.C. The objective perfluoroalkyl iodide is not only utilized as a reagent for introducing the perfluoroalkyl group by itself but also useful as a synthetic intermediate for surfactants, medicines and agrochemicals.

    FIRE EXTINGUISHING METHOD
    8.
    发明专利
    FIRE EXTINGUISHING METHOD 失效

    公开(公告)号：JPH0824363A

    公开(公告)日：1996-01-30

    申请号：JP31262493

    申请日：1993-11-18

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： ABE TAKASHI ,  FUKAYA HARUHIKO ,  HAYASHI EIJI ,  HAYAKAWA YOSHIO

    IPC: A62D1/06 ,  A62D1/00 ,  A62D1/02

    Abstract: PURPOSE:To provide a gaseous fire extinguishing chemical formed by using polyfluoroamines having high-performance fire extinguishability without destroying the ozone layer as a substitutive material for Halon. CONSTITUTION:Fire is extinguishable without destroying the ozone layer if the polyfluoro-tertiary amine expressed by a general formula (CF3)2NRf(where Rf is respectively 1 to 2 polyfluoroalkyl group or alkenyl group) is used as the essential component of the gaseous fire extinguishing chemical.

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