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    Purification of pyromellitic dianhydride
    3.
    发明授权
    Purification of pyromellitic dianhydride 失效
    均苯四酸二酐的纯化

    公开(公告)号：US3927039A

    公开(公告)日：1975-12-16

    申请号：US51980674

    申请日：1974-11-01

    Applicant: LABOFINA SA

    Inventor： DE HAULT EMMANUEL R E G DRAGUE ,  VAN TONGELEN MARCEL ,  DEBUS HENRI R

    IPC: C07D307/89 ,  C07C51/573

    CPC classification number: C07C51/573 ,  C07C63/313

    Abstract: A process for purifying pyromellitic dianhydride which comprises treating said dianhydride, containing impurities, with an alkylbenzene solvent having the general formula:

    WHEREIN R1 is a saturated aliphatic hydrocarbon radical containing from two to 20 carbon atoms, R2 is a saturated aliphatic radical containing from one to 20 carbon atoms and n is an integer between 0 and 5, the total number of the carbon atoms in R1 and R2 being less than 25, at a temperature between 0* and 280*C, separating the solid pyromellitic dianhydride from the liquid phase which contains alkylbenzene solvent and the impurities, and then evaporating said solvent which is contained in the pyromellitic dianhydride.

    Abstract translation: 一种纯化1,2,4,5-苯四酸二酐的方法，其包括用具有以下通式的烷基苯溶剂处理含有杂质的所述二酐：

    Process for the selective oxidation of ketones
    4.
    发明授权
    Process for the selective oxidation of ketones 失效
    科学选择性氧化的方法

    公开(公告)号：US3833625A

    公开(公告)日：1974-09-03

    申请号：US19319971

    申请日：1971-10-27

    Applicant: LABOFINA SA

    Inventor： BERTRAND J ,  VAERMAN J

    IPC: C07C51/245 ,  C07C51/28

    CPC classification number: C07C51/245

    Abstract: A PROCESS FOR THE OXIDATION OF KETONES IN THE LIQUID PHASE WHICH COMPRISES SUBJECTING AN ASYMMETRICAL KETONE R-CO-R'', WHERE R IS A PARAFFINIC OR OLEFINC HYDROCARBON RADICAL CONTAINING AT LEAST 2 CARBON ATOMS, SUBSTITUTED OR NOT, AND R'' IS A SATURATED ALIPHATIC RADICAL CONTAINING NOT MORE THAN 2 CARBON ATOMS, TO OXIDATION IN THE PRESENCE OF MOLECULAR OXYGEN AT A PARTIAL PRESSURE OF 0.1 TO 50 ATMOSPHERES AND IN THE PRESENCE OF A MANGANESE SALT, THE MOLAR RATIO OF MANGANIC SALT TO KETONE BEING HIGHER THAN 0.1, AT A TEMPERATURE FROM 20 TO 130*C., WITH THE SELECTIVE FORMATION OF THE ACID R-COOH WHEREIN R IS AS DEFINED ABOVE.

    Nickel werner complexes of ring substituted alpha-phenylalkylamines
    7.
    发明授权
    Nickel werner complexes of ring substituted alpha-phenylalkylamines 失效
    环取代的α-苯基烷基胺的镍维纳络合物

    公开(公告)号：US3177235A

    公开(公告)日：1965-04-06

    申请号：US28251663

    申请日：1963-05-22

    Applicant: LABOFINA SA

    Inventor： RADZIT PIERRE MARIE JOSEPH GHI ,  VICTOR HANOTIER JACQUES DANIEL

    IPC: B01J31/18 ,  C07C7/152 ,  C07F15/04 ,  C08F4/06

    CPC classification number: C07F15/045 ,  B01J31/1805 ,  B01J2531/847 ,  C07C7/152 ,  C08F4/06 ,  C07C15/02 ,  C07C15/00

    Abstract: The invention comprises a Werner complex of general formula Ni(SCN)2Xn which is insoluble, or sparingly soluble, in water at room temperature, wherein X is an alpha-arylalkylamine of the formula in which R1 is either hydrogen or a primary alkyl group and R2 is a phenyl group carrying two further halogen substituents on the 3- and 4-positions, and n is either 2 or 4. R1 preferably contains 1 to 10, more particularly 1 to 6, carbon atoms. The halogen substituents are conveniently identical and may be chlorine or bromine. The complexes are made, according to an example, by adding a solution of the arylalkylamine in heptane, or heptane-chloroform mixture, at room temperature to an aqueous solution obtained by dissolving NiCl2.6H2O and KSCN in water, and separating the resulting precipitate by filtration. Specific examples of amines are a (3,4-dichlorophenyl) ethylamine, a (3,4 - dichlorophenyl) butylamine, a (3,4 - dichlorophenyl) heptylamine, a (3,4 - dibromophenyl) ethylamine. They may be prepared by reductive amination of the corresponding ketones, for instance by heating with ammonium formate. Specifications 931,775, 935,099, 937,791 and 945,012 are referred to.ALSO:Clathrates of aromatic hydrocarbons are made using a Werner complex of the general formula Ni(SCN)2Xn, wherein X is an alpha-arylalkylamine of the formula in which R1 is either hydrogen or a primary alkyl group and R2 is a phenyl group carrying two halogen substituents on the 3- and 4-positions, and n is 2 or 4. The clathrates may be made heating a complex Ni(SCN)2X4 with one or more clathratable aromatic hydrocarbons to a temperature at which all the complex is dissociated into Ni(SCN)2X2 and 2X, and then cooling to effect recombination of the components to form the clathrate. Alternatively a complex Ni(SCN)2X2, at least two motor equivalents of amine X and at least one clathratable aromatic hydrocarbon are mixed together to form a clathrate in which the complex is Ni(SCN)2X4. A mixture of aromatic hydrocarbons containing at least one such clathratable compound can be resolved by forming a clathrate with a complex of the type Ni(SCN)2X4 and the clathratable compound or compounds in the mixture, separating the clathrate from the mixture and dissociating the clathrate, e.g. by heating, treatment with an acid which does not react with the clathrated compounds, steam stripping or elution with an inert solvent. In examples, isomers of di-isopropylbenzenes, cymenes, ethylisopropylbenzenes, cyclohexyltoluenes, and methylnaphthalenes are separated. Specifications 931,775, 935,099, 937,791 and 945,012 are referred to.

    Process for the purification of light paraffinic petroleum distillates
    10.
    发明授权
    Process for the purification of light paraffinic petroleum distillates 失效
    轻质石油馏分的纯化方法

    公开(公告)号：US3827974A

    公开(公告)日：1974-08-06

    申请号：US19038671

    申请日：1971-10-18

    Applicant: LABOFINA SA

    Inventor： AGA R ,  CAHEN R ,  DEBUS H

    IPC: B01J23/40 ,  B01J23/42 ,  B01J37/02 ,  B01J37/03 ,  C10G45/52 ,  C10G23/02 ,  C10G23/04

    CPC classification number: B01J23/40 ,  B01J23/42 ,  B01J37/02 ,  B01J37/03 ,  C10G2400/02

    Abstract: A CONTINUOUS PROCESS FOR THE PURIFICATION OF LIGHT PARAFFINIC FRACTION BOILING IN THE RANGE OF 25* TO 100*C. AND CONTAINING AS MAJOR PORTION STRAIGHT CHAIN PARAFFINS, BRANCHED PARAFFINS AND CYCLOPARAFFINS AND AS A MINOR PORTION AN IMPURITY SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS, SULPHUR-CONTAINING COMPOUNDS, NITROGEN-CONTAINING COMPOUNDS, AND OTHER NON--HYDROCARBON IMPURITIES, AND MIXTURES THEREOF, THE SULPHUR CONTENT BEING NO GREATER 500 P.P.M., SAID PROCESS COMPRISING: HYDROGENATION SAID LIGHT PARAFFINIC FRACTION AT A TEMPERATURE IN THE RANGE OF 150 TO 375*C., UNDER A PARTIAL PRESSURE OF HYDROGEN OF 10 TO 100 KG./CM.2, AT A S VELOCITY OF 0.5 TO 20 V./V./H. AND A HYDROGEN TO HYDROCARBON RATIO OF 100 TO 3,000 NM.3/M.3, IN THE PRESENCE OF A HYDROGENATING CATALYST CONTAINING BETWEEN 0.1 AND 2% OF PLATINUM ON A SILICA-ALUMINA CARRIER, SILICA BEING IN MAJOR QUANTITY, AND AT LEAST 30% OF THE PLATINUM BEING DISTRIBUTED ON THE CATALYST SURFACE WHICH IS ACCESSIBLE TO THE REACTANTS, FRACTIONATING THE PRODUCTS OF THE HYDROGENATION TO SEPARATE THE HYDROGENATED SULPHUR- AND NITROGEN-CONTAINING COMPOUNDS AND TO RECOVER A PARAFFINIC FRACTION SUBSTANTIALLY CONTAINING ONLY PARAFFINIC HYDROCARBONS WITH AN INCREASED CONTENT OF CYCLOPARAFFINS.

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