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    82.
    发明专利
    未知

    公开(公告)号：AT364591T

    公开(公告)日：2007-07-15

    申请号：AT04765603

    申请日：2004-09-24

    Applicant: BASF AG

    Inventor： REUTEMANN WERNER ,  WEBER THEODOR ,  ROSS KARL-HEINZ ,  JULIUS MANFRED

    IPC: C07C209/86 ,  C07C209/16 ,  C07C209/90 ,  C07C211/04

    Abstract: The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream ( 10 ) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column ( 1 ), the remaining components of the product stream obtained as bottoms ( 12 ) are fed to a second column ( 2 ). Trimethylamine ( 14 ) is separated off in the second column ( 2 ) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms ( 15 ) from the second column ( 2 ) are fed to a third column ( 3 ), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column ( 4 ). To avoid corrosion alkali metal hydroxide is added to the second or third column ( 3 ).

    Zpusob výroby polyamidu
    84.
    发明专利
    Zpusob výroby polyamidu 未知

    公开(公告)号：CZ296358B6

    公开(公告)日：2006-02-15

    申请号：CZ20003436

    申请日：1999-03-18

    Applicant: BASF AG

    Inventor： BREINER URLIKE ,  JULIUS MANFRED ,  NEUBERG RAINER ,  WEISS ROBERT ,  WILMS AXEL ,  HU HARRY Y

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28 ,  C08G69/48 ,  C08K5/3435

    Abstract: Zpusob výroby polyamidu spocívá v tom, ze se polymerizace výchozích monomeru nebo výchozích oligomeru provádí za prítomnosti alespon jedné slouceninyvzorce (I), ve kterém znací R funkcní skupinu R.sup.8.n., která nese 1 az 4 stejné nebo rozdílné amidotvorné skupiny R.sup.7.n.; R.sup.1.n. je H, C.sub.1.n. az C.sub.20.n.-alkyl, cykloalkyl, benzyl, OR.sup.6.n., kde znací R.sup.6.n. H, C.sub.1.n. azC.sub.20.n.-alkyl, cykloalkyl, benzyl; R.sup.2.n., R.sup.3.n., R.sup.4.n., R.sup.5.n. jsou nezávisle na sobe C.sub.1.n. az C.sub.20.n.-alkyl; n je prirozené císlo vetsí nez 1, pricemz piperidinové deriváty vázané na R jsou se zretelem na substituenty, to znamená R.sup.1.n., R.sup.2.n., R.sup.3.n., R.sup.4.n. a R.sup.5.n., rozdílné nebo stejné. Takto vyrobené polyamidy se pouzívají k výrobe nití, vláken, fólií, plosných útvaru a tvarových teles.

    85.
    发明专利
    未知

    公开(公告)号：DE10344283A1

    公开(公告)日：2005-04-21

    申请号：DE10344283

    申请日：2003-09-24

    Applicant: BASF AG

    Inventor： REUTEMANN WERNER ,  WAMBSGANS ROLF ,  POPLOW FRANK ,  WEBER THEODOR ,  ROS KARL-HEINZ ,  JULIUS MANFRED

    IPC: C07C209/16 ,  C07C211/04 ,  C07C209/24

    Abstract: The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.

    Process for reducing the dimerization of 4-aminopiperidines, a mixture with reduced amount of a dimer and use thereof
    89.
    发明专利
    Process for reducing the dimerization of 4-aminopiperidines, a mixture with reduced amount of a dimer and use thereof 未知

    公开(公告)号：CZ291453B6

    公开(公告)日：2003-03-12

    申请号：CZ391698

    申请日：1997-05-28

    Applicant: BASF AG

    Inventor： JULIUS MANFRED ,  RUST HARALD ,  KRAUSE ALFRED ,  SIEGEL HARDO ,  SIEGEL WOLFGANG ,  WITZEL TOM

    IPC: C07B63/04 ,  C07D211/58 ,  C07D211/72 ,  C07D221/20 ,  C08K5/3435

    Abstract: The present invention relates to a process for reducing the dimerization of piperidines of the general formula I wherein R1e through Re4 represent alkyl containing 1 to 6 carbon atoms, Re1 and Re2 and/or Re3 and Re4 together denote a CHi2 chain having 2 to 5 carbon atoms, wherein the process comprises adding to the piperidine from 0.001 to 0.2 percent by weight of a reducing agent of the general formula MXHi(4-m)Yim, wherein M is an alkali metal, NRi4, wherein R are identical or different alkyl groups containing 1 to 4 carbon atoms, or an equivalent of an alkaline earth metal or an equivalent of zinc, X represents boron or aluminum, Y denotes CN and m is 0 or 1, based on the amount of piperidine of the general formula I. The invention also relates to a mixture of piperidines of the general formula I, containing from 0.001 to 0.2 percent by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the general formula I, and to the hindered amine light stabilizers prepared therefrom.

    90.
    发明专利
    未知

    公开(公告)号：ES2178419T3

    公开(公告)日：2002-12-16

    申请号：ES99916829

    申请日：1999-03-18

    Applicant: BASF AG

    Inventor： DARDIN ULRIKE ,  JULIUS MANFRED ,  NEUBERG RAINER ,  WEISS ROBERT ,  WILMS AXEL ,  HU HARRY Y

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/28 ,  C08G69/48 ,  C08K5/3435

    Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I)whereR is a functional group R which bears 1-4 identical or different amide-forming groups R ,R is H, C1-C20-alkyl, cycloalkyl, benzyl or OR , where R is H, C1-C20-alkyl, cycloalkyl or benzyl,R , R , R and R are independently C1-C10-alkyl,n is a natural number greater than 1, andthe piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R , R , R , R and R .The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.

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