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    METHOD FOR DISSOLVING METAL
    1.
    发明专利
    METHOD FOR DISSOLVING METAL 失效

    公开(公告)号：JPH04246135A

    公开(公告)日：1992-09-02

    申请号：JP2765691

    申请日：1991-01-30

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： NAKAO YUKIMICHI ,  KAERIYAMA KYOJI

    IPC: C22B9/16 ,  C22B3/04

    Abstract: PURPOSE:To dissolve many kinds of metals with simple operation by bringing the metal into contact with a polar organic solvent solution of halogen simple substance of chlorine, bromine or iodine. CONSTITUTION:Into the polar organic solvent (e.g. acetonitrile, methanol, acetone, ethyl acetate), the halogen simple substance (chlorine, bromine. iodine) is dissolved. The metal (e.g. beryllium, magnesium, aluminum, vanadium, chromium, manganese, iron, cobalt, nickel, copper, etc.) is brought into contact with this solution. Then, the above metal is transformed into the halide and dissolved.

    METHOD FOR EXTRACTING GOLD AND SILVER FROM ORE
    3.
    发明专利
    METHOD FOR EXTRACTING GOLD AND SILVER FROM ORE 失效

    公开(公告)号：JPH04107230A

    公开(公告)日：1992-04-08

    申请号：JP22629890

    申请日：1990-08-28

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： NAKAO YUKIMICHI ,  KAERIYAMA KYOJI

    IPC: C22B11/00 ,  C01G5/00 ,  C01G7/00 ,  C22B3/10

    Abstract: PURPOSE:To economically and safely extract gold and silver from ore by bringing halogen simple substance, halogenated salt and an organic solvent into contact with pulverized ore and converting gold and silver included therein into compounds easy to dissolve. CONSTITUTION:The simple body of chlorine, bromine and iodine as halogen simple substance and halogenated quaternary nitrogen compounds and halogenated metallic salt as halogenated salt as well as an organic solvent are brought into contact with pulverized gold and silver ore. By giving halogen atoms to gold and silver in the ore from the halogen simple substance, the halides of gold and silver are formed and are converted into halogeno anion complexes by the function of the halogenated salt, so that they are extracted into the organic solvent.

    METHOD FOR DISSOLVING METAL
    4.
    发明专利
    METHOD FOR DISSOLVING METAL 失效

    公开(公告)号：JPH046229A

    公开(公告)日：1992-01-10

    申请号：JP10822590

    申请日：1990-04-24

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： NAKAO YUKIMICHI ,  KAERIYAMA KYOJI ,  YAMAUCHI AIZO

    IPC: C22B3/04

    Abstract: PURPOSE:To easily and economically dissolve a metal by bringing the metal into contact with a cationic surfactant, the paired anion of which is a halogen ion, a halogenic simple substance and an org. solvent. CONSTITUTION:The metal is brought into contact with a halogenic simple substance and an org. solvent in the presence of the cationic surfactant, the paired anion of which is the halogen ion. A quaternary ammonium compd., etc., is adequate as the above-mentioned cationic surfactant and is used at an equal molar ratio or above of the above-mentioned metal. Chlorine, bromine or iodine is used as the above-mentioned halogen simple substance and are used at about >=0.5 times mol the metal. Benzene, methanol, brombenzene, or the like is used as the above-mentioned org. solvent. The metal in contact therewith is converted to the easily soluble compd. which is dissolved in the org. solvent.

    THIOPHENE COMPOUND AND PRODUCTION THEREOF
    5.
    发明专利
    THIOPHENE COMPOUND AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH02174773A

    公开(公告)日：1990-07-06

    申请号：JP32989488

    申请日：1988-12-27

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KAERIYAMA KYOJI ,  TANAKA SUSUMU ,  YAMAUCHI AIZO

    IPC: C07D333/08 ,  C07D333/18

    Abstract: NEW MATERIAL:The thiophene compound of formula (thienyl groups are present on the same benzene ring or different benzene rings). EXAMPLE:1,4-Bis(2-thienyl)naphthalene. USE:Useful as a displaying material and electrochemical material. A thin film polymer produced by the electrolytic polymerization of the compound on a glass electrode exhibits electrochromism and can be reversibly oxidized and reduced. PREPARATION:The compound of formula is produced by reacting a dihalogenated naphthalene with a 2-thienylmagnesium halide preferably in the presence of an organic metal complex {e.g. dichloro[bis(triphenylphosphine)]nickel} in a solvent at a temperature between 0 deg.C and reflux temperature, preferably between 30 deg.C and reflux temperature.

    METHOD FOR DISSOLVING METAL
    6.
    发明专利
    METHOD FOR DISSOLVING METAL 失效

    公开(公告)号：JPH01294830A

    公开(公告)日：1989-11-28

    申请号：JP12285288

    申请日：1988-05-19

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： NAKAO YUKIMICHI ,  KAERIYAMA KYOJI ,  YAMAUCHI AIZO

    IPC: C22B3/04 ,  C22B3/16 ,  C23F1/10

    Abstract: PURPOSE:To safely dissolve and recover a metal with simple operation by using a cationic surfactant and halogentated hydrocarbons. CONSTITUTION:A cationic surfactant such as cetylpyridinium chloride is added to halogenated hydrocarbons (chlorine, bromine, and iodine are used as the halogen) such as benzyl chloride, the powders of a typical metal and a transition metal are further added and mixed, and the mixture is heated, if necessary. A halogen atom is given to the object metal from the halogenated hydrocarbons, and the metal halide is formed. The metal halide is converted to an ion pair of a metal polyhalide anion complex and an alkylammonium cation by the action of the cationic surfactant, and the metal is dissolved in the halogenated hydrocarbons. Accordingly, the operation is simplified, the metal is safely dissolved, and the metal can be recovered by such a process.

    SYNTHESIS OF POLYPHENYLENE ETHER OF HIGH DEGREE OF POLYMERIZATION
    7.
    发明专利
    SYNTHESIS OF POLYPHENYLENE ETHER OF HIGH DEGREE OF POLYMERIZATION 失效

    公开(公告)号：JPH01236237A

    公开(公告)日：1989-09-21

    申请号：JP6273288

    申请日：1988-03-16

    Applicant: AGENCY IND SCIENCE TECHN ,  FUJI POLYMER IND

    Inventor： NAKAO YUKIMICHI ,  KAERIYAMA KYOJI ,  YAMAUCHI AIZO ,  YOTSUYA TERUHISA ,  NINOMIYA YAMAHITO

    IPC: C08G65/44 ,  C08G65/38

    Abstract: PURPOSE:To produce the title polymer which has a small content of by-products and can be easily washed, by performing the polymerization of a 2,6- disubstituted phenol in the presence of a specified catalyst and oxygen or an oxygen-liberating substance in two stages in a specified solvent. CONSTITUTION:The polymerization of a 2,6-disubstituted phenol (e.g., 2,6- dimethylphenol) in the presence of oxygen or an oxygen-liberating substrate (e.g., air) by using an oxidative coupling reaction catalyst (e.g., cupurous chloride) is performed in a pyridine/aromatic compound (e.g., pyridine/benzene) mixed solvent by a two-stage reaction comprising a reaction at low temperature (desirably, a reaction performed for 30-60min under cooling with an ice bath) and a subsequent reaction at high temperature (desirably, a reaction at 40-60 deg.C). The use of said solvent makes it possible to synthesize a polyphenylene ether of a high degree of polymerization, and the two-stage reaction makes it possible to perform a washing operation easily because of a decreased content of by- products and to obtain a polyphenylene ether of a high degree of polymerization suitable as, especially, a material for an engineering plastic.

    PRODUCTION OF THIOPHENE-BASED COMPOUND
    10.
    发明专利
    PRODUCTION OF THIOPHENE-BASED COMPOUND 失效

    公开(公告)号：JPH0426686A

    公开(公告)日：1992-01-29

    申请号：JP13358690

    申请日：1990-05-23

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KAERIYAMA KYOJI ,  MASUDA HIDEYUKI ,  YAMAUCHI AIZO ,  MATSUZAKI YOSHINORI

    IPC: C07D333/16

    Abstract: PURPOSE:To readily obtain the subject compound utilizable as organic electronic materials by converting into a polymer using an easily available stable and readily handleable raw material by reacting an alkali metallized thiophene with an alkyl halogenoether. CONSTITUTION:A 3-alkali metallized thiophene expressed by formula I (M is alkali metal) is reacted with an alkyl halogenomethyl ether (e.g. halogenomethyl methyl ether) expressed by the formula CH2X-O-R (X is halogen; R is alkyl) to afford the objective compound expressed by formula II.

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