中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

55 records (took 0.02 seconds)

    SELECTIVE PRODUCTION OF 2,2'-BIS(4-HYDROXYPHENYL)PROPANE
    4.
    发明专利
    SELECTIVE PRODUCTION OF 2,2'-BIS(4-HYDROXYPHENYL)PROPANE 失效

    公开(公告)号：JPH10218817A

    公开(公告)日：1998-08-18

    申请号：JP2077698

    申请日：1998-02-02

    Applicant: DEGUSSA

    Inventor： WIELAND STEFAN DR ,  GRADL ROBERT ,  ROEDER STEFAN

    IPC: B01J31/02 ,  C07B61/00 ,  C07C37/20 ,  C07C39/16 ,  C07C39/367

    Abstract: PROBLEM TO BE SOLVED: To produce 2,2'-bis(4-hydroxyphenyl)propane in high yield by adding water to the reaction mixture and reacting phenol with a carbonyl compound in the presence of an organopolysiloxane containing sulfonate group and mercapto group or an inorganic carrier material modified by the sulfonate group and the mercapto group. SOLUTION: A compound of formula I (R to R are each H, a 1-4C alkyl, etc.), (e.g. phenol) is reacted with a compound of formula II (R and R are each H, a 1-6C alkyl, etc.), (e.g. formaldehyde) in the presence of an organopolysiloxane containing sulfonate group and mercapto group by allowing the reaction mixture to include 0.1-30wt.% water, preferably at 50-70 deg.C to provide the objective compound of formula III. This method is useful for producing highly pure bisphenol A having high isomer ratio of a p, p-product/an o, p- product.

    PRODUCTION OF PRIMARY AND/OR SECONDARY AMINE FROM OXO COMPOUND
    5.
    发明专利
    PRODUCTION OF PRIMARY AND/OR SECONDARY AMINE FROM OXO COMPOUND 失效

    公开(公告)号：JPH1087572A

    公开(公告)日：1998-04-07

    申请号：JP17826397

    申请日：1997-07-03

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  ARNTZ DIETRICH DR ,  WEBER KARL-LUDWIG DR ,  HOFEN WILLI ,  WIELAND STEFAN DR

    IPC: C07C209/24 ,  C07B61/00 ,  C07C209/26 ,  C07C209/48 ,  C07C209/52 ,  C07C211/01 ,  C07C211/33 ,  C07C211/36 ,  C07C211/43

    Abstract: PROBLEM TO BE SOLVED: To provide a method for production a primary and/or secondary amine from an oxo compound suppressing the formation of byproduct by using an organopolysiloxane containing a sulfonate group as a catalyst for turning the oxo compound into imino and turning the oxo compound into an imino with excess ammonia. SOLUTION: An oxo compound is turned into an imino with excess ammonia in a case of a primary amine or with a lower monoalkylamine in a case of a secondary amine respectively by using an organopolyusiloxane containing a sulfonate group as a catalyst, if necessary, in the presence of an organic solvent, and hydrogenating the resultant reaction product in the presence of a hydrogenation catalyst at 20-250 deg.C under 0.5-25MPa pressure to provide the objective amine in the method for producing the primary and/or secondary amine from the oxo compound.

    PROCESS FOR CATALYTIC CONVERSION OF CARBON MONOXIDE BY MEANS OF WATER IN HYDROGEN-CONTAINING GAS MIXTURE
    8.
    发明专利
    PROCESS FOR CATALYTIC CONVERSION OF CARBON MONOXIDE BY MEANS OF WATER IN HYDROGEN-CONTAINING GAS MIXTURE 失效

    公开(公告)号：JP2001316682A

    公开(公告)日：2001-11-16

    申请号：JP2001079295

    申请日：2001-03-19

    Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG

    Inventor： BAUMANN FRANK ,  WIELAND STEFAN DR

    IPC: C01B3/48 ,  B01J23/89 ,  B01J35/04 ,  B01J37/02 ,  C01B3/16 ,  C10K3/02 ,  H01M8/0662

    Abstract: PROBLEM TO BE SOLVED: To provide a process for the conversion of carbon monoxide in a hydrogen-containing gas mixture which has a high specific conversion ratio of carbon monoxide with a good selectivity under the moving use condition of automobiles that an output requirement changes rapidly, has a high temperature-stability, and has no sensitivity to the oxygen in the educt gas mixture. SOLUTION: The subject process comprises a catalytic conversion of carbon monoxide is catalytically converted into carbon dioxide and water by means of the water in a hydrogen-containing gas mixture by passing through the gas mixture over a shift catalyst at an operating temperature for the purpose of the conversion of carbon monoxide. In this case, the shift catalyst is at least one noble metal applied on an inactive support element in the shape of a covered material.

    CATALYST FOR REFORMING ALCOHOL BY STEAM AND MANUFACTURING METHOD AND USE OF THE SAME
    9.
    发明专利
    CATALYST FOR REFORMING ALCOHOL BY STEAM AND MANUFACTURING METHOD AND USE OF THE SAME 失效

    公开(公告)号：JP2000354764A

    公开(公告)日：2000-12-26

    申请号：JP2000148695

    申请日：2000-05-19

    Applicant: DEGUSSA

    Inventor： WIELAND STEFAN DR ,  BAUMANN FRANK ,  ADAM FRANK ,  ANDERSCH STEFAN

    IPC: B01J21/12 ,  B01J23/60 ,  B01J23/80 ,  B01J29/068 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/14 ,  B01J37/16 ,  B01J37/18 ,  C01B3/32 ,  H01M8/06

    Abstract: PROBLEM TO BE SOLVED: To obtain a high selectivity and a specific hydrogen productivity in a reforming reaction of alcohol with steam by depositing a catalytically active component on at least one kind of carrying material selected from a group consisting of aluminum oxide, aluminum silicate, titanium oxide, zirconium oxide, zeolite, and mixtures thereof or a mixed oxide. SOLUTION: A catalytically active component is deposited on at least one kind of carrying material selected from a group consisting of aluminum oxide, aluminum silicate, titanium oxide, zirconium oxide, zeolite and mixtures thereof or a mixed oxide. This catalyst contains a 0.5-10 mass % palladium/zinc alloy and 1-50 mass % zinc oxide to the total mass of the catalyst respectively. When methanol is reformed with steam, this catalyst can provide >20 Nm3/kg.h hydrogen producing capacity at 300 deg.C reactor temperature. And the carrying material used is aluminum oxide having >10 m2/g BET specific surface area.

    CONTINUOUS PRODUCTION OF GAMMA-AMINOPROPYLTRIALKOXYSILANE
    10.
    发明专利
    CONTINUOUS PRODUCTION OF GAMMA-AMINOPROPYLTRIALKOXYSILANE 失效

    公开(公告)号：JPH10182668A

    公开(公告)日：1998-07-07

    申请号：JP34508197

    申请日：1997-12-15

    Applicant: DEGUSSA

    Inventor： BALDUF TORSTEN DR ,  WIELAND STEFAN DR ,  LORTZ WOLFGANG DR ,  POHLISCH JOACHIM DR ,  GOEBEL THOMAS DR ,  GRETHE HORST

    IPC: C07F7/18

    Abstract: PROBLEM TO BE SOLVED: To provide a continuous production process for γ-aminopropyl- trialkoxysilane. SOLUTION: (A) γ-Chloropropyltrialkoxysilane and ammonia are mixed at a desired ratio, (B) the mixture is heated up to the reaction temperature, (C) allowed to recycle in the pressurized reactor for the residence time for the complete reaction. At this time, the reaction mixture may be circulated through a plurality of temperature zones. Then, (D) the reaction mixture is cooled down, when necessary, an organic solvent (an extractant) is added, (E) the product is separated from the two-phase mixture and (F) the ammonia phase is returned to the reactor (C) or to (A).

Patent Agency Ranking