PROCESO PARA PREPARAR SALES DE ACIDO CIANHIDRICO

    公开(公告)号:PE00582007A1

    公开(公告)日:2007-02-04

    申请号:PE0006142006

    申请日:2006-06-05

    Applicant: BASF AG

    CPC classification number: C01C3/08 C01C3/10

    Abstract: QUE COMPRENDE: a) PREPARAR UN GAS CRUDO QUE COMPRENDE ACIDO CIANHIDRICO POR DESHIDRATACION DE FORMAMIDA HASTA UNA CONVERSION DE LA FORMAMIDA MAYOR O IGUAL A 97%, EN UN REACTOR EN PRESENCIA DE AIRE U OXIGENO Y A UNA TEMPERATURA ENTRE 300°C Y 650°C; b) DE SER APROPIADO, LAVAR CON ACIDO SULFURICO EL GAS CRUDO OBTENIDO EN (a); Y, c) HACER REACCIONAR EL GAS CRUDO OBTENIDO EN (a), O DE SER APROPIADO DE (b), CON UNA SOLUCION ACUOSA DE UN HIDROXIDO M(OH)x, DONDE M ES SELECCIONADO DEL GRUPO QUE CONSISTE EN METALES ALCALINOS Y METALES ALCALINOTERREOS, TAL COMO Li, Na Y K, Y x DEPENDE DEL ESTADO DE OXIDACION DE M Y ES 1 o 2. LA SOLUCION ACUOSA EN (c) COMPRENDE DE 5% A 50% EN PESO DE HIDROXIDO, Y (c) SE LLEVA A CABO A UNA TEMPERATURA DE 5°C A 100°C

    103.
    发明专利
    未知

    公开(公告)号:DE502004001864D1

    公开(公告)日:2006-12-07

    申请号:DE502004001864

    申请日:2004-06-08

    Applicant: BASF AG

    Abstract: Use of aqueous dispersions comprising at least one at least partially neutralized ethylene copolymer wax selected from among ethylene copolymer waxes which comprise, as comonomers in copolymerized form, (A) from 26.1 to 39% by weight of at least one ethylenically unsaturated carboxylic acid and (B) from 61 to 73.9% by weight of ethylene, and ethylene copolymer waxes which comprise, in copolymerized form, (A') from 20.5 to 38.9% by weight of at least one ethylenically unsaturated carboxylic acid, (B') from 60 to 79.4% by weight of ethylene and (C') from 0.1 to 15% by weight of at least one ethylenically unsaturated carboxylic ester, as auxiliaries for wastewater treatment.

    104.
    发明专利
    未知

    公开(公告)号:AT276321T

    公开(公告)日:2004-10-15

    申请号:AT01962735

    申请日:2001-06-13

    Applicant: BASF AG

    Abstract: Pigment concentrates comprising at least one pigment and one polyolefin wax prepared from one or more olefins by catalysis with a single-site catalyst comprising a transition metal of groups 5 to 8 of the Periodic Table, where the complex contains not more than one cyclopentadienyl system per transition metal atom, the concentrates comprising a thermoplastic, if desired, and additives, if desired.

    107.
    发明专利
    未知

    公开(公告)号:ES2204593T3

    公开(公告)日:2004-05-01

    申请号:ES00929482

    申请日:2000-05-03

    Applicant: BASF AG

    Abstract: Copolymers of ethylene have from 1 to 30 mol % of alkyl(meth)acrylates and, if desired, other comonomers, and have a residual comonomer content of less than 0.5% by weight in the copolymer. A process for preparing copolymers of this type in a combination of stirred autoclave and tubular reactor is described, as is the use of the copolymers for preparing polyamide molding compositions.

    108.
    发明专利
    未知

    公开(公告)号:ES2204184T3

    公开(公告)日:2004-04-16

    申请号:ES99965554

    申请日:1999-12-24

    Applicant: BASF AG

    Abstract: The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction-which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements-wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.

    110.
    发明专利
    未知

    公开(公告)号:ES2115384T5

    公开(公告)日:2002-10-16

    申请号:ES95921822

    申请日:1995-06-03

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/02110 Sec. 371 Date Dec. 4, 1996 Sec. 102(e) Date Dec. 4, 1996 PCT Filed Jun. 3, 1995 PCT Pub. No. WO95/33793 PCT Pub. Date Dec. 14, 1995Transparent molded articles having a high-contrast laser inscription thereon are produced from a polymer mixture consisting of A) from 40 to 99% by weight of a polymer of an alkyl ester of (meth)acrylic acid, B) from 1 to 50% by weight of a copolymer of styrene and acrylonitrile having an acrylonitrile content of from 8 to 30% by weight, C) from 0 to 50% by weight of rubber particles, and D) from 0 to 20% by weight of additives and processing auxiliaries, by preparing a transparent molded article from the polymer mixture, and exposing the transparent molded article to laser radiation.

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