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    Catalyst for redn of nitro cpds - comprising palladium on an aluminium spinel support
    33.
    发明专利
    Catalyst for redn of nitro cpds - comprising palladium on an aluminium spinel support 未知

    公开(公告)号：DE2135155A1

    公开(公告)日：1973-02-22

    申请号：DE2135155

    申请日：1971-07-14

    Applicant: BAYER AG

    Inventor： THELEN HERMANN DR ,  SCHWERDTEL WULF DR ,  HALCOUR KURT DR ,  SWODENK WOLFGANG DR

    IPC: B01J23/58 ,  B01J23/60 ,  B01J23/89 ,  B01J11/08

    Abstract: A Pd catalyst for the redn. of nitro cpds. has an Al spinel support. The support pref. has a specific surface of 20-120 m2/g. and an av. pore dia. of 200-800 angstroms. the spinel-forming metal is pref. Co, Mg, Li, Ni, or Zn. The catalyst pref. contains 0.1-10, esp. 0.5-5wt.% Pd. It can be used (a) for the redn. of nitro cpds. in the presence of a liquid diluent, pref. recycled amine prodt., by trickling the reaction mixt. over the fixed catalyst at 50-240 degrees C under H2 pressure in a tube reactor, the heat of reation being removed by coolant surrounding the tube; (b) for the gas-phase redn. of mononitro cpds.; or (c) for the reductive alkylation of nitro cpds., by adding an aldehyde or ketone, pref. acetone, during hydrogenation. The catalyst is highly active and allows low reaction temps. to be used. the prodts. can be used, e.g., for the prodn. of isocyanates and plant-protection agents.

    Anhydrous hydrogen peroxide solns - in phosphorus acid esters for stability and ease of mfr
    35.
    发明专利
    Anhydrous hydrogen peroxide solns - in phosphorus acid esters for stability and ease of mfr 未知

    公开(公告)号：DE2038319A1

    公开(公告)日：1972-02-10

    申请号：DE2038319

    申请日：1970-08-01

    Applicant: BAYER AG

    Inventor： WALDMANN HELMUT DR ,  SCHWERDTEL WULF DR ,  SWODENK WOLFGANG DR

    IPC: C01B15/017

    Abstract: Anhydrous solns. of H2O2 are prepd. in P cpds. of formula: (in which X, Y, Z are O, N-1-6C alkyl or N-4-7C cycloalkyl; m, n, p are 0 or 1; R groups are opt. branched 1-6C alkyl or 4-6C cycloalkyl, opt. with halogen, OH, 1-4C alkoxy, CN or phenyl subst.; one of R can be phenyl, opt. substd. by halogen, OH, 1-4C alkyl or -alkoxy, carbo-1-3C alkoxy or CN; any 2 R together can be alkylene, so that 5-7 membered heterocycle with 3 heteroatoms or with P as heteroatom is formed). These solns. are stable, can be produced continuously and safely without losses and with much lower distn. costs than usual. They are useful in prepn. of organic peroxycarboxylic acids.

    1,3-diacetoxy 2-methylenepropane prepn
    36.
    发明专利
    1,3-diacetoxy 2-methylenepropane prepn 未知

    公开(公告)号：DE1942014A1

    公开(公告)日：1971-03-04

    申请号：DE1942014

    申请日：1969-08-19

    Applicant: BAYER AG

    Inventor： SWODENK WOLFGANG DR ,  SCHARFE GERHARD DR ,  MARTIN MANFRED DR

    IPC: C07C20060101 ,  C07C27/00 ,  C07C67/04 ,  C07C69/145 ,  C07C69/16

    Abstract: 2-methylene propane prepn. Title cpd. is prepd. by reacting isobutene, oxygen and acetic acid in the vapour phase at 50-250 degrees C over a Pd-contg. catalyst, partially or completely removing components boiling at >150 degrees C at normal pressure, and returning part or all components boiling at 150 degrees C at normal pressure, to the reaction. The reaction can be conducted in tubular reactors 4-8m long with internal diameters of 20-50mm. The product is useful for the production of 1,3-dihydroxy-2-methylene propane by hydrolysis.

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