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    3.
    发明专利
    未知

    公开(公告)号：DE3854675D1

    公开(公告)日：1995-12-14

    申请号：DE3854675

    申请日：1988-09-08

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIGURO MASAHARU ,  MIKI HISAYA ,  HIROKANE NOBUYA

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted naphthalene used. A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

    4.
    发明专利
    未知

    公开(公告)号：DE3874061D1

    公开(公告)日：1992-10-01

    申请号：DE3874061

    申请日：1988-09-08

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIGURO MASAHARU ,  MIKI HISAYA ,  HIROKANE NOBUYA

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12 ,  C07C409/04

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted naphthalene used. A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

    METHOD FOR PURIFYING CRUDE NAPHTHALENEDICARBOXYLIC ACID
    5.
    发明专利
    METHOD FOR PURIFYING CRUDE NAPHTHALENEDICARBOXYLIC ACID 未知

    公开(公告)号：CA2209907A1

    公开(公告)日：1997-05-15

    申请号：CA2209907

    申请日：1996-10-30

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： IWASAKI HIROSHI ,  ISHIBASHI MASAYASU ,  HIROKANE NOBUYA ,  INOKI SATOSHI

    IPC: C07C51/487 ,  C07C51/493 ,  C07C63/38

    Abstract: PCT No. PCT/JP96/03180 Sec. 371 Date Jul. 9, 1997 Sec. 102(e) Date Jul. 9, 1997 PCT Filed Oct. 30, 1996 PCT Pub. No. WO97/17318 PCT Pub. Date May 15, 1997The invention provides a method for purifying a crude naphthalenedicarboxylic acid comprising the steps of mixing a crude naphthalenedicarboxylic acid and a water/alcohol solvent to esterify a part of the naphthalenedicarboxylic acid, thereby dissolving a naphthalenedicarboxylic ester into the solvent, and then contacting the resulting reaction mixture with hydrogen in the presence of a hydrogenation catalyst to hydrogenate impurities which are contained in the crude naphthalenedicarboxylic acid and which are capable of being hydrogenated, thereby dissolving and removing hydrogenation products into the water/alcohol solvent. A mixture of a naphthalene dicarboxylic acid and a naphthalenedicarboxylic ester with reduced impurity contents, or a high-purity naphthalenedicarboxylic acid can be obtained.

    6.
    发明专利
    未知

    公开(公告)号：DE3854675T2

    公开(公告)日：1996-03-21

    申请号：DE3854675

    申请日：1988-09-08

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIGURO MASAHARU ,  MIKI HISAYA ,  HIROKANE NOBUYA

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted naphthalene used. A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

    7.
    发明专利
    未知

    公开(公告)号：AT129995T

    公开(公告)日：1995-11-15

    申请号：AT92100457

    申请日：1988-09-08

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIGURO MASAHARU ,  MIKI HISAYA ,  HIROKANE NOBUYA

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted naphthalene used. A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

    8.
    发明专利
    未知

    公开(公告)号：DE3874061T2

    公开(公告)日：1993-04-08

    申请号：DE3874061

    申请日：1988-09-08

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIGURO MASAHARU ,  MIKI HISAYA ,  HIROKANE NOBUYA

    IPC: C07C37/08 ,  C07C39/14 ,  C07C409/08 ,  C07C409/12 ,  C07C409/04

    Abstract: A method of oxidizing secondary alkyl substituted naphthalenes with molecular oxygen in a liquid phase to hydroperoxides, carbinols or mixtures of these, which comprises: oxidizing the secondary alkyl substituted naphthalenes in the presence of an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein in amounts of not more than about 1000 ppm based on the secondary alkyl substituted naphthalene used. A process of producing isopropylnaphthols is also disclosed, which comprises: oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to diisopropylnaphthalene monohydroperoxides in the presence of (a) either an aromatic hydrocarbon having a fused ring which contains at least one methylene group therein, or a paladium catalyst soluble in the reaction mixture, and (b) an organic polar compound such as acetonitrile; and then acid-decomposing the diisopropylnaphthalene monohydroperoxide to the isopropylnaphthol.

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