中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

93 records (took 0.027 seconds)

    PRODUCTION OF 2 POSITION-SUBSTITUTED 6-ISOPROPYLNAPHTHALENE
    51.
    发明专利
    PRODUCTION OF 2 POSITION-SUBSTITUTED 6-ISOPROPYLNAPHTHALENE 失效

    公开(公告)号：JPH04173754A

    公开(公告)日：1992-06-22

    申请号：JP30128990

    申请日：1990-11-06

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： FUJITA TERUNORI ,  TAKAHATA KAZUNORI

    IPC: B01J27/08 ,  B01J27/12 ,  B01J29/06 ,  B01J31/08 ,  C07B61/00 ,  C07C37/14 ,  C07C37/16 ,  C07C37/84 ,  C07C39/14 ,  C07C41/40 ,  C07C43/20

    Abstract: PURPOSE:To recover the title substance and to reuse part or the whole except the recovered substance with the raw material by isopropylating a raw material naphthalene derivative replaced with OH, OCH3, OC2H5, etc., at the 2-position with propylene, etc., in the presence of an acid catalyst. CONSTITUTION:A raw material naphthalene derivative replaced with OH, OCH3, OC2H5, etc., at the 2-position is isopropylated with an isopropylating agent such as propylene or isopropanol to give a reaction mixture having a ratio of number of isopropyl groups/number of naphthalene rings of 0.4-2.2. The reaction mixture is distilled to give a fraction having the title substance concentrated, the fraction is crystallized from an aliphatic hydrocarbon (e.g. pentane or hexane) to recover the objective substance, part or the whole except the recovered substance by the distillation and the crystallization as a return substance is added to the raw material and a molar ratio of isopropyl group/ naphthalene ring is made 0.41-6.0.

    PRODUCTION OF ORTHO-ALKYLANILINES
    52.
    发明专利
    PRODUCTION OF ORTHO-ALKYLANILINES 失效

    公开(公告)号：JPH04154743A

    公开(公告)日：1992-05-27

    申请号：JP27691090

    申请日：1990-10-16

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： NAGATA TAKUJI ,  YASUHARA MITSUTATSU ,  FUJITA TERUNORI

    IPC: B01J21/16 ,  C07B61/00 ,  C07C209/68 ,  C07C211/45

    Abstract: PURPOSE:To obtain the subject compound useful as an intermediate for agricultural chemicals, dyeing assistant, etc., in high selectivity, conversion and yield by reacting an aniline compound with an olefin in liquid phase in the presence of a solid acid catalyst consisting of a cation-exchanged laminar compound. CONSTITUTION:The subject compound can be produced in high selectivity on an industrial scale at a low cost by reacting an aniline compound with an olefin in liquid phase in the presence of a solid acid catalyst consisting of a laminar compound exchanged with a cation, e.g. >=2-valent metallic ion selected from Al, Ca, Fe, Ni, Cu, Ga, In, Se, La, Zr and/or Ti, e.g. montmorillonite, bentonite, hectorite, taeniolite, saponite, vermiculite and/or tetrasilicic mica or a material produced by crosslinking the above laminar compound with a metal oxide such as alumina, zirconia, iron oxide or titanium oxide.

    4-METHYLDIPHENYL ETHERS AND 4,4'-DIMETHYLDIPHENYL ETHERS
    53.
    发明专利
    4-METHYLDIPHENYL ETHERS AND 4,4'-DIMETHYLDIPHENYL ETHERS 失效

    公开(公告)号：JPH0421648A

    公开(公告)日：1992-01-24

    申请号：JP12336790

    申请日：1990-05-14

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： FUJITA TERUNORI ,  KANEDA MITSUHIRO ,  ONO HIROYASU ,  TAKAHATA KAZUNORI

    IPC: B01J21/16 ,  B01J27/125 ,  B01J31/10 ,  C07B61/00 ,  C07C41/30 ,  C07C43/263

    Abstract: PURPOSE:To prepare the subject compound in high selectivity by transalkylating diphenyl ether and/or 4-methyldiphenyl ether with penta-or hexamethylbenzene or a specific polymethylnaphthalene as a methylating agent. CONSTITUTION:Diphenyl ether and/or 4-methyldithenyl ether is transmethylated with pentamethylbenzene, hexamethylbenzene or a polymethylnaphthalene having five or more nucleus-substituted methyl groups as a methylating agent under a relatively mild reaction condition to prepare 4-methyldiphenyl ether and/or 4,4'-dimethyldiphenyl ether in high selectivity. Hexamethylbenzene, octamethylnaphthalene, heptamethylnaphthalene, etc., are preferable as the methylating agent. The prepared compounds are useful as raw materials for 4,4'-diphenyl ether dicarboxylic acid.

    PREPARATION OF HEXAMETHYLBENZENE
    54.
    发明专利
    PREPARATION OF HEXAMETHYLBENZENE 失效

    公开(公告)号：JPH03287549A

    公开(公告)日：1991-12-18

    申请号：JP8897690

    申请日：1990-04-02

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： FUJITA TERUNORI ,  ONO HIROYASU ,  TAKAHATA KAZUNORI

    IPC: B01J21/16 ,  C07B61/00 ,  C07C2/86 ,  C07C15/02

    Abstract: PURPOSE:To prepare the subject substance useful as a methylating agent in high selectivity by reacting a polymethylbenzene having plural CH3 groups with methanol as an alkylating agent in the presence of a catalyst consisting of an ion exchange type lamellar compound. CONSTITUTION:A polymethylbenzene having 2-5 CH3 groups is reacted with methanol in a molar ratio of 1:1-30 in the presence of a catalyst consisting of an ion exchange type lamellar compound at 150-300 deg.C for 30min to 8hr to prepare the subject substance in a high yield. The ion exchange type lamellar compound has a shape in which many lamellar clay layers are laminated to each other and an ion component (e.g. protons, Al ions, Ga ions or Fe ions) is contained between the layers, and includes montmorillonite, bentonite vermiculite and tatrasilic mica. >=30mol% of the ion component is preferably cations.

    SEPARATION AND PURIFICATION OF 6-ISOPROPYL-2-NAPHTHOL
    55.
    发明专利
    SEPARATION AND PURIFICATION OF 6-ISOPROPYL-2-NAPHTHOL 失效

    公开(公告)号：JPH03227948A

    公开(公告)日：1991-10-08

    申请号：JP2483790

    申请日：1990-02-02

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： FUJITA TERUNORI ,  TAKAHATA KAZUNORI

    IPC: C07C37/82 ,  C07C39/14

    Abstract: PURPOSE:To recover the title high-purity compound from a mixture consisting essentially of isopropyl-2-naphthols in high recovery ratio by adding a specific aliphatic hydrocarbon as a solvent to the mixture and recovering a solid substance. CONSTITUTION:A mixture consisting essentially of isopropyl-2-naphthols containing 6-isopropyl-2-naphthol obtained by isopropylation of 2-naphthol is blended with 5-11C aliphatic hydrocarbon (e.g. hexane or n-octane), stirred at room temperature, optionally under heating under normal pressure, under reduced pressure or under pressure, cooled and a solid content is recovered to regain 6-isopropyl-2-naphthol from the mixture. By this method, the title compound can be separated and purified industrially and advantageously. The title compound, for example, is effective as a precursor in production of naproxen, antipyretic analgesic anti-inflammatory drug.

    METHOD OF LIQUID-PHASE CATALYTIC REACTION
    58.
    发明专利
    METHOD OF LIQUID-PHASE CATALYTIC REACTION 失效

    公开(公告)号：JPS6287549A

    公开(公告)日：1987-04-22

    申请号：JP22852685

    申请日：1985-10-14

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： ISHIBASHI MASAYASU ,  SAEKI KENJI ,  FUJITA TERUNORI ,  MIZUNO KENICHI

    IPC: C07C45/45 ,  B01J8/02 ,  B01J8/04 ,  B01J8/06 ,  B01J29/90 ,  C07B31/00 ,  C07B61/00 ,  C07B63/00 ,  C07C45/00 ,  C07C49/825 ,  C07C67/00

    Abstract: PURPOSE:To obtain a reaction product in high yield with preventing deactivation of catalyst, by passing liquid raw material compounds through a solid catalytic layer to give a reaction mixture, evaporating only low-boiling compounds such as an unreacted raw material, etc., cooling the compounds to give a condensed solution and circulating the condensed solution through the catalytic layer. CONSTITUTION:Liquid raw material compounds (e.g., phenol and carboxylic acid) are sent from feed pipes 2a and 2b to an upper part of a main body 3 of reaction column, passed through a solid catalytic layer (e.g., ion exchange type layer clay catalyst) 7 to give a reaction mixture consisting of a high-boiling reaction product (e.g., acylphenol) and unreacted raw material compounds from the raw material compounds. The mixture is heated in a storage tank 1 at a temperature to evaporate only the unreacted raw materials, etc., evolved vapor is introduced to the upper part of the reaction column 3, partially condensed compounds during rising and a condensed solution condensed by a multi- stage distillation column 16 are circulated through the solid catalytic layer 17 and the attached reaction product is removed. The reaction product remaining in the storage tank 1 is recovered from an outlet 11.

    PRODUCTION OF ARYLALKYL HYDROPEROXIDES
    60.
    发明专利
    PRODUCTION OF ARYLALKYL HYDROPEROXIDES 失效

    公开(公告)号：JPH08319269A

    公开(公告)日：1996-12-03

    申请号：JP12512395

    申请日：1995-05-24

    Applicant: MITSUI PETROCHEMICAL IND

    Inventor： MATSUI NARIKAZU ,  TAKAI TOSHIHIRO ,  MATSUOKA HIDETO ,  ISHIBASHI MASAYASU ,  KAGAYAMA AKISHI ,  KURODA HIROSHI ,  FUJITA TERUNORI

    IPC: B01J31/22 ,  C07B61/00 ,  C07C407/00 ,  C07C409/08 ,  C07C409/10

    Abstract: PURPOSE: To improve the initial selectivity of oxidizing reaction and produce the corresponding arylalkyl hydroperoxides at a high concentration in high selectivity by using a specifically treated transition metallic complex as a catalyst. CONSTITUTION: (A) A transition metallic complex is pretreated with oxygen or a peroxide (preferably alkyl hydroperoxides, etc.). (B) An arylalkyl- hydrocarbon of the formula [P and Q are each H or an alkyl; (n) is 1-3; Ar is an n-valent hydrocarbon] (e.g. cumene) is then oxidized with a gas containing oxygen in the presence of the resultant transition metallic complex as a catalyst and converted into arylalkyl hydroperoxides. Furthermore, the transition metal in the component (A) preferably has an ion of the transition metal, selected from the groups I, II, VI, VII and VIII of the periodic table (e.g. manganese) and coordinated with a ligand (preferably an aliphatic cyclic compound containing nitrogen, especially porphycenes, etc.) and the atom coordinated with the ion is preferably nitrogen, oxygen or sulfur.

Patent Agency Ranking