PROCEDIMIENTO PARA LA OBTENCION DE CLORUROS DE LOS ACIDOS CLOROCARBOXILICOS.

    公开(公告)号:ES2250371T3

    公开(公告)日:2006-04-16

    申请号:ES01919355

    申请日:2001-02-28

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de cloruros de los ácidos clorocarboxílicos de la fórmula (I) en la que R1 y R2 significan, independientemente entre sí, un átomo de hidrógeno, un resto alifático, aromático o aralifático insubstituido o substituido, con 1 hasta 20 átomos de carbono, un halógeno, un grupo nitro o un grupo ciano, e Y significa una cadena alquileno con 1 hasta 10 átomos de carbono en la cadena, que está insubstituida o que está substituida por restos alifáticos, aromáticos o aralifáticos, insubstituidos o substituidos, con 1 hasta 20 átomos de carbono, por halógeno, por grupos nitros y/o por grupos ciano, pudiendo estar interrumpida la cadena alquileno por un grupo éter, por un grupo tioéter, por un grupo amino terciario o por un grupo ceto, pudiendo estar enlazados entre sí los citados restos alifáticos, aromáticos o aralifáticos, insubstituidos o substituidos, con 1 hasta 20 átomos de carbono de Y y/o de R1 y/o de R2, formando un sistema no aromático, caracterizado porquese hace reaccionar una lactona de la fórmula (II) en la que R1, R2 e Y tienen el significado precedentemente indicado, con cloruro de hidrógeno y fosgeno en presencia de un catalizador, caracterizado porque se alimenta cloruro de hidrógeno antes y/o durante la adición de fosgeno, comenzándose con la introducción de cloruro de hidrógeno solamente a partir de una temperatura de 60ºC, como mínimo, y empleándose como catalizador un compuesto de piridina.

    22.
    发明专利
    未知

    公开(公告)号:DE50205702D1

    公开(公告)日:2006-04-13

    申请号:DE50205702

    申请日:2002-04-17

    Applicant: BASF AG

    Abstract: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from -50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

    Safe handling 3-chloropropine
    23.
    发明专利

    公开(公告)号:CZ20032891A3

    公开(公告)日:2004-04-14

    申请号:CZ20032891

    申请日:2002-04-17

    Applicant: BASF AG

    Abstract: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from -50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.

    25.
    发明专利
    未知

    公开(公告)号:ES2174494T3

    公开(公告)日:2002-11-01

    申请号:ES98948890

    申请日:1998-08-28

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP98/05525 Sec. 371 Date Feb. 17, 2000 Sec. 102(e) Date Feb. 17, 2000 PCT Filed Aug. 28, 1998 PCT Pub. No. WO99/11611 PCT Pub. Date Mar. 11, 1999A catalyst used for preparing thiochloroformates by reacting thiols with phosgene is a cyclic urea or cyclic thiourea which may be in the form of a salt obtainable by reaction with a hydrohalic acid or phosgene.

    METHOD FOR THE INTRINSICALLY SAFE HANDLING OF 3-CHLORPROPYNE

    公开(公告)号:CA2444800A1

    公开(公告)日:2002-10-31

    申请号:CA2444800

    申请日:2002-04-17

    Applicant: BASF AG

    Abstract: The invention relates to a method for the intrinsically safe handling of 3- chlorpropyne in the presence of a diluent, which has a boiling point under normal pressure in the range of -50 ~C (223 K) to 200 ~C (473 K). According to the method, the concentration of 3-chloropropyne in the liquid phase and in the gaseous phase is maintained below the concentrations at which deflagrati on occurs, by means of the type and quantity of the diluent, the temperature an d the total pressure of the system. The invention also relates to the use of 3 - chloropropyne produced, stored or transported in this manner for the synthes is of dyes, pharmaceutical and agricultural active ingredients, electroplating auxiliary agents, disinfection agents, steroids and growth hormones.

    27.
    发明专利
    未知

    公开(公告)号:ES2169889T3

    公开(公告)日:2002-07-16

    申请号:ES98112986

    申请日:1998-07-13

    Applicant: BASF AG

    Abstract: Recovery of neopentyl hydroxypivalate (I) from a mixture containing (I), products (II) of lower boiling point, products (III) of higher boiling point and inorganic salts (IV) is carried out in 2 separation stages. In stage (1), the mixture is fed to a wiped film evaporator; (III) and (IV) are discharged from the sump; and a vapor stream of (I), (II) and (III) is discharged via the top to a heat transfer unit, where it is condensed. In stage (2), the condensate is fed into a rectifying column with a second evaporator and heat transfer; a vapor stream of (II) is discharged at the top, condensed and optionally partly recycled as reflux and partly discharged; a vapor stream of (I) is discharged at the side and condensed; and a stream of (I) and (III) is discharged from the sump and (partly) passed to the second evaporator, the vapor from this evaporator being (partly) recycled to the lower zone of the column. Also claimed is the apparatus used.

    28.
    发明专利
    未知

    公开(公告)号:DE59803565D1

    公开(公告)日:2002-05-02

    申请号:DE59803565

    申请日:1998-11-21

    Applicant: BASF AG

    Abstract: The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula IwhereR1 is for example hydrogen or C1- to C20-alkyl andY is for example a saturated or mono- or polyolefinically unsaturated C2-C8-alkylene chain,by reacting lactones with a chlorinating agent in the presence of a urea compound.

    30.
    发明专利
    未知

    公开(公告)号:DE3409063A1

    公开(公告)日:1985-09-19

    申请号:DE3409063

    申请日:1984-03-13

    Applicant: BASF AG

    Abstract: A process for the preparation of pourable choline chloride/silica powders by mixing silica with choline chloride and, where appropriate, drying this mixture, wherein spray-dried or fluidized bed-dried silica which has a particle size of from 30 to 250 mu m is mixed with an aqueous choline chloride solution which contains from 70 to 80% by weight, based on the solution, of choline chloride and is at from 40 DEG to 80 DEG C., thereafter from 0.05 to 0.4% by weight, based on the mixture, of magnesium stearate or calcium stearate is added and, if appropriate, the resulting mixture is dried.

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