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    REDUCTION OF ACETAL OR KETAL CONTENT IN REACTION MIXTURE
    2.
    发明专利
    REDUCTION OF ACETAL OR KETAL CONTENT IN REACTION MIXTURE 失效

    公开(公告)号：JP2000086557A

    公开(公告)日：2000-03-28

    申请号：JP24759899

    申请日：1999-09-01

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  JAEGER BERND DR ,  SAUER JOERG DR ,  VANHEERTUM RUDOLF DR

    IPC: B01J23/44 ,  B01J23/46 ,  B01J23/755 ,  C07B61/00 ,  C07C29/132 ,  C07C29/90 ,  C07C31/20

    Abstract: PROBLEM TO BE SOLVED: To reduce the acetal or ketal in an aqueous phase reaction mixture containing a high-content of alcohol by catalytically hydrogenating the acetal or ketal with a heterogenous catalyst that is acidic or neutral at room temperature thereby further reducing the acetal or ketal without decomposition of alcohol. SOLUTION: Acetals other than formal or ketal in an aqueous phase reaction mixture containing at least 10 moles of monohydric or polyhydric alcohol per mole of acetal or ketal are reduced by catalytically hydrogenation in the presence of a catalyst of a noble metal on activated carbon heterogeneously at 80-250 deg.C, preferably 100-180 deg.C, under a hydrogen partial pressure of 0.5-30 MPa. This process is particularly suitable for removal of the acetals other than formal or ketals of α-hydroxycarbonyl compounds or β-hydroxycarbonyl compound, particularly removal of 1,3-dioxolane derivatives, particularly 1,3-dioxane derivatives.

    PRODUCTION OF AMINE FROM IMINE OR NITRILE
    3.
    发明专利
    PRODUCTION OF AMINE FROM IMINE OR NITRILE 失效

    公开(公告)号：JPH11222465A

    公开(公告)日：1999-08-17

    申请号：JP30855598

    申请日：1998-10-29

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  WEBER KARL-LUDWIG DR ,  STADTMUELLER KLAUS ,  HOFEN WILLI ,  VANHEERTUM RUDOLF DR

    IPC: B01J23/75 ,  C07B61/00 ,  C07C209/48 ,  C07C209/52 ,  C07C211/36

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound in a high yield with reducing the formation of by-product, by using an imine or nitrile and hydrogen, hydrogenating the imine or nitrile by amination in the presence of a specific hydrogenation catalyst under specific conditions. SOLUTION: An imine or nitrile, especially isophoronenitrile is hydrogenated by using hydrogen by amination in the presence of a hydrogenating catalyst basically comprising ammonium, cobalt, nickel, ruthenium or these metal mixture and a hydroxide, especially quaternary ammonium hydroxide at 50-250 deg.C under 0.3-30 MPa and the reaction mixture is subjected to after-treatment to give a primary amine and/or a secondary amine, especially isophoronediamine. Isophoronenitrile-imine is 3-cyano-3,5,5-trimethylcyclohexaneimine and isophoronediamine is 3-aminomethyl-3,5,5-trimethylcyclohexylamine.

    METHOD FOR REDUCTIVE DECOMPOSITION OF LINEAR OR CYCLIC ACETAL
    6.
    发明专利
    METHOD FOR REDUCTIVE DECOMPOSITION OF LINEAR OR CYCLIC ACETAL 失效

    公开(公告)号：JP2000086551A

    公开(公告)日：2000-03-28

    申请号：JP24760499

    申请日：1999-09-01

    Applicant: DEGUSSA

    Inventor： MORAWIETZ MARCUS DR ,  HAAS THOMAS DR ,  BURKHARDT OLAF DR ,  VANHEERTUM RUDOLF DR

    IPC: B01J23/46 ,  C07B61/00 ,  C07C29/132 ,  C07C29/90 ,  C07C31/24

    Abstract: PROBLEM TO BE SOLVED: To provide a method for easily producing the objective decomposition products in high selectivity, at a little use of a catalyst or at high space time yield, with the optional use of an acidic catalyst by subjecting a linear or cyclic acetal to reductive decomposition, in the presence of a heterogeneous hydrogenation catalyst and hydrogen, in a formate-containing aqueous medium under specific conditions. SOLUTION: A linear or cyclic acetal is subjected to reductive decomposition, in the presence of heterogeneous hydrogenation catalyst and hydrogen, at a pH of less than 7 under a pressure of 0.1-30 MPa at a temperature of 200-300 deg.C, preferably 200-280 deg.C in a formate-containing aqueous medium, wherein the weight ratio of a hydrogenation activating metal to the acetal is less than 0.1 in the case of the operation of a suspension. Preferable examples of the catalyst to be used above are supported catalysts prepared by supporting the hydrogenation activating metal such as Ru, Rh, Pd, Pt, Cu, Cr, Fe, Co or Ni on a base of a support consisting of activated carbon or an oxide.

    INTERMOLECULAR ETHERIFICATTON AND DEGRADATION OF ETHER
    7.
    发明专利
    INTERMOLECULAR ETHERIFICATTON AND DEGRADATION OF ETHER 失效

    公开(公告)号：JPH11209318A

    公开(公告)日：1999-08-03

    申请号：JP31455998

    申请日：1998-11-05

    Applicant: DEGUSSA

    Inventor： MORAWIETZ MARCUS DR ,  HAAS THOMAS DR ,  BURKHARDT OLAF DR ,  VANHEERTUM RUDOLF DR

    IPC: B01J29/72 ,  B01J31/04 ,  C07B61/00 ,  C07C29/10 ,  C07C31/12 ,  C07C31/18 ,  C07C31/20 ,  C07C31/24 ,  C07C41/09 ,  C07C43/13

    Abstract: PROBLEM TO BE SOLVED: To simply carry out intermolecular etherification of an alcohol and degradation of ether in high ether yield and good monoether selectivity without producing a by-product such as colored material by using a combination of an acid catalyst with a hydrogenation catalyst and water as a solvent. SOLUTION: When a monohydric or polyhydric alcohol (A) is etherified or an ether is subjected to ether decomposition in water phase in the presence of (B) an acid catalyst (e.g. formic acid, acetic acid or propionic acid) at >=100 deg.C (e.g. 120-380 deg.C) to carry out intermolecular etherification of the component A and ether degradation, the reaction is carried out in coexistence of (C) a hydrogenation catalyst which is stable to an acid [e.g. monovalent or polyvalent noble metal (compound) which is a series of ruthenium, rhodium, palladium or platinum]under hydrogen atmosphere (e.g. 1-15 MPa hydrogen partial pressure). The reaction is preferably carried out by using the component B in an amount of 0.1-20 wt.% based on polyol and the component C in an amount of 0.001-10 wt.% based on the component A or ether to be degraded.

    PRODUCTION OF PRIMARY AND/OR SECONDARY AMINE FROM OXO COMPOUND
    8.
    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.

    PRODUCTION OF ALCOHOL
    9.
    发明专利
    PRODUCTION OF ALCOHOL 失效

    公开(公告)号：JP2000103751A

    公开(公告)日：2000-04-11

    申请号：JP27325599

    申请日：1999-09-27

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  JAEGER BERND DR ,  SAUER JOERG DR ,  VANHEERTUM RUDOLF DR

    IPC: B01J23/46 ,  B01J8/02 ,  C07B61/00 ,  C07C29/141 ,  C07C29/145 ,  C07C31/10 ,  C07C31/20 ,  C07C31/26

    Abstract: PROBLEM TO BE SOLVED: To produce an alcohol in high yield by catalytically hydrogenating a specific aldehyde or a ketone in an aqueous solution or an organic solvent at a specified temperature under a specific hydrogen pressure using a specified ruthenium catalyst. SOLUTION: (B) An aldehyde (except 3-hydroxypropionaldehyde) or a ketone is catalytically hydrogenated in an aqueous solution or an organic solvent at 0-200 deg.C temperature under 0.5-30 MPa H2 pressure while using (A) a ruthenium catalyst having 0.1-20 wt.% of ruthenium content and using the ruthenium on an oxide carrier (preferably TiO2 or SiO2) consisting of the group of TiO2, SiO2, ZrO2, MgO2, mixed oxides and silicic salts except zeolite as a catalyst. Furthermore, acetals and ketals which are by-products can be decomposed by conducting the above hydrogenation in the presence of an acidic catalyst.

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