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    2.
    发明专利
    未知

    公开(公告)号：DE19502805C2

    公开(公告)日：2000-05-11

    申请号：DE19502805

    申请日：1995-01-30

    Applicant: HOECHST AG

    Inventor： BORCHERT HOLGER ,  GERDAU THOMAS ,  WEIGUNY JENS

    IPC: B01J23/847 ,  B01J23/85 ,  B01J23/88 ,  C07B61/00 ,  C07C45/36 ,  C07C47/55 ,  C07C45/33 ,  B01J23/36 ,  B01J23/887

    Abstract: Prodn. of halo-benzaldehydes of formula (I) comprises the catalytic gas-phase oxidn. of corresp. substd. toluenes of formula (II) with oxygen in the presence of a catalyst of formula Me aMe bMe cOx (III). Hal = F, Cl, Br or I, z = 1-4, Me = Bi or V, Me = Li, Na, K, Rb and/or Cs; Me = Fe, Co, Ni, Nb, Mo, As, Sn, Sb, W, Ta, P, Cr, Mn, Pd, Cu, Zn, Ce, Ag, B, Sm, Ba, Ca, Mg and/or Re; when a = 1, b = 0.1-2 and c = 0.05-2, opt. with different values of b and c for different Me or Me ; x is not defined.

    PROCESS FOR THE PREPARATION OF ALKALI METAL PHOSPHONOFORMATES
    3.
    发明专利
    PROCESS FOR THE PREPARATION OF ALKALI METAL PHOSPHONOFORMATES 未知

    公开(公告)号：CA1297495C

    公开(公告)日：1992-03-17

    申请号：CA531323

    申请日：1987-03-06

    Applicant: HOECHST AG

    Inventor： GERDAU THOMAS

    IPC: C07F9/38 ,  C07F9/40

    Abstract: HOE 86/F 050 A process for the production of alkali-phosphonoformates which comprises bringing together in a first stage a trialkyl ester of phosphonoformic acid and an aqueous solution of an alkali hydroxide at a temperature in the range from the freezing point of water and about 40.degree.C, either keeping the resulting mixture in a second stage for further progress of the reaction and then heating the reaction mixture in a third stage to a temperature up to about 100.degree.C for completion of the saponification, or heating the reaction mixture immediately for completion of the saponification to a temperature of up to 100.degree.C.

    POLYMERIC HYDRIDOCHLOROSILAZANES, PROCESS FOR THEIR PREPARATION, CERAMIC MATERIALS CONTAINING SILICON NITRIDE WHICH CAN BE MANUFACTURED THEREFROM, AND THEIR MANUFACTURE
    5.
    发明专利
    POLYMERIC HYDRIDOCHLOROSILAZANES, PROCESS FOR THEIR PREPARATION, CERAMIC MATERIALS CONTAINING SILICON NITRIDE WHICH CAN BE MANUFACTURED THEREFROM, AND THEIR MANUFACTURE 未知

    公开(公告)号：CA2004399A1

    公开(公告)日：1990-06-03

    申请号：CA2004399

    申请日：1989-12-01

    Applicant: HOECHST AG

    Inventor： VAAHS TILO ,  GERDAU THOMAS ,  KLEINER HANS-JERG ,  PEUCKERT MARCELLUS ,  BRUCK MARTIN

    IPC: C04B35/58 ,  C04B35/589 ,  C08G77/48 ,  C08G77/62 ,  D01F9/10 ,  C08G77/54 ,  C04B35/14

    Abstract: HOE 88/F 340 Polymeric hydridochlorosilazanes, process for their preparation, ceramic materials containing silicon nitride which can be manufactured therefrom, and their manufacture The invention relates to novel polymeric hydridochlorosilazanes, to their preparation, to their processing to form ceramic materials containing silicon nitride, and to said materials themselves. The polymeric hydridochlorosilazanes are prepared by reacting oligohydridoorganosilazanes of the general formula (R1SiHNH)n, in which n is about 3 to about 12, with at least one of the chlorosilanes R2SiHCl2, R3SiCl3, Cl2R4Si-CH2CH2-SiR4Cl2 or Cl3Si-CH2CH2-SiR5Cl2 at 30.degree.C to 300.degree.C, where the radicals independently of one another have the following meanings: R1 = a C1-C6 alkyl or C2-C6 alkenyl group, R2 = a C2-C6 alkenyl group if R2SiHCl2 is reacted with the oligosilazanes by itself, or R2 = a C1-C6 alkyl or C2-C6 alkenyl group if R2SiHCl2 is reacted with the oligosilazanes as a mixture with other chlorosilanes, and R3, R4, R5 = a C1-C6 alkyl or C2-C6 alkenyl group, and where R3SiCl3 is used only as a mixture with at least one of the other chorosilanes (containing R2, R4 or R5). The polymeric hydridochlorosilazanes according to the invention can be converted into polysilazanes by reaction with ammonia, and these in turn can be pyrolyzed to form ceramic materials containing silicon nitride.

    PROCESS FOR PRODUCING N-ACYL-ALPHA-AMINOACID-DERIVATIVES
    7.
    发明专利
    PROCESS FOR PRODUCING N-ACYL-ALPHA-AMINOACID-DERIVATIVES 未知

    公开(公告)号：HU9501217D0

    公开(公告)日：1995-06-28

    申请号：HU9501217

    申请日：1995-04-28

    Applicant: HOECHST AG

    Inventor： BELLER MATTHIAS ,  FISCHER HARTMUT ,  GERDAU THOMAS ,  GROSS PETER

    IPC: C07C231/08 ,  C07C231/12 ,  C07C233/47 ,  C07C233/49 ,  C07C233/52 ,  C07C233/53 ,  C07C233/63 ,  C07C233/82 ,  C07C233/83

    Abstract: Prodn. of N-acyl glycine derivs. of formula (I) comprises (a) reacting a carboxamide of formula (II) with an aldehyde of formula (III) in the presence of a solvent and an acid to form an acylaminomethanol deriv. of formula (IV), and (b) carbonylating (IV) in the presence of a Co carbonyl catalyst at 20-150 deg. C and a CO pressure of 1-150 bar. R1 = H, linear, branched or cyclic 1-26C alkyl, mono- or polyunsaturated linear, branched or cyclic 2-24C alkenyl, 6-18C aryl, (1-10C)alkyl(6-18C) aryl or opt. polyunsaturated (1-10C)alkenyl(6-18C)aryl; R2 = H, linear, branched or cyclic 1-26C alkyl, mono- or polyunsaturated linear, branched or cyclic 2-23C alkenyl, 6-18C aryl, (1-10C)alkyl(6-18C)aryl or opt. polyunsaturated (2-10C)alkenyl(6-18C)aryl; R3 = H, linear branched or cyclic 1-10C alkyl, mono- or polyunsaturated linear, branched or cyclic 2-10C alkenyl, 6-18C aryl, (1-10C)alkyl(6-18C)aryl or opt. polyunsaturated (2-10C)alkenyl(6-18C)aryl.

    PROCESS FOR PRODUCTION OF PHOSPHONE FORMIATES OF ALKALI METALS
    9.
    发明专利
    PROCESS FOR PRODUCTION OF PHOSPHONE FORMIATES OF ALKALI METALS 未知

    公开(公告)号：HUT45733A

    公开(公告)日：1988-08-29

    申请号：HU94187

    申请日：1987-03-05

    Applicant: HOECHST AG

    Inventor： GERDAU THOMAS

    IPC: C07F9/38 ,  C07F9/40

    Abstract: Alkali metal phosphonoformates are prepared by alkaline hydrolysis of trialkyl phosphonoformates with an aqueous alkali metal hydroxide solution in a two-step procedure, in which… a) the temperature of the reaction mixture is not allowed to rise above about 40 DEG C when the trialkyl phosphonoformates and the aqueous alkali metal hydroxide solution are combined and, if desired is maintained in this temperature range for some time, and… b) the reaction mixture is then heated to temperatures of about 100 DEG C until hydrolysis is complete.

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