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    METHOD FOR PURIFYING 4-AMINO-PIPERIDINES
    121.
    发明专利
    METHOD FOR PURIFYING 4-AMINO-PIPERIDINES 未知

    公开(公告)号：HU0004584A2

    公开(公告)日：2001-04-28

    申请号：HU0004584

    申请日：1998-09-25

    Applicant: BASF AG

    Inventor： JULIUS MANFRED ,  DR SIEGEL HARDO ,  SIEGEL WOLFGANG ,  WITZEL TOM

    IPC: C07D211/58

    Abstract: The invention relates to a method for purifying 2,2,6,6-tetrasubstituted 4-amino-piperidines produced from the corresponding piperidin-4-ones, and subsequent distillation. According to the invention, the distilled 2,2,6,6-tetrasubstituted 4-amino-piperidine is reacted with hydrogen in the presence of a hydrating or dehydrating catalyst and the 4-amino piperidine is then separated from the reaction mixture.

    Process for preparing polyamides
    122.
    发明专利
    Process for preparing polyamides 未知

    公开(公告)号：CZ20003436A3

    公开(公告)日：2001-04-11

    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: 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.

    INHERENTLY LIGHT- AND HEAT-STABILIZED POLYAMIDE AND METHOD OF MAKING THE SAME
    125.
    发明专利
    INHERENTLY LIGHT- AND HEAT-STABILIZED POLYAMIDE AND METHOD OF MAKING THE SAME 未知

    公开(公告)号：BG104495A

    公开(公告)日：2001-01-31

    申请号：BG10449500

    申请日：2000-05-31

    Applicant: BASF AG

    Inventor： ILG OTTO ,  BREINER ULRIKE ,  JULIUS MANFRED

    IPC: C08G69/00 ,  C08G69/48 ,  C08K5/3435

    Abstract: The polyamide can be used for making products such as fibres, carpets, yarns and textile fabrics. It is prepared by polymerizing polyamide forming monomers in the presence of an effective amount of at least one piperidine compounds with the general formula wherein R1 is hydrogen, benzyl or a C1-C20 alkyl, R2-R5 are each hydrogen or the same or a different C1-C6 alkyl, X has n free valence bonding sites and is an alkyl or substituted alkyl having from 1 to about 30 carbon atoms, or an aryl from about 6 to about 20 carbon atoms; m is 0 or 1; -C(O)-R6 is a group that can form an amide bond together with an amine, and n is equal to 1, 2 or 3. At the polymerization at least one 4-amino-2,2,6,6-tetramethylpiperidine is also present, with the formula where R7 is hydrogen, benzyl or C1-C20 alkyl. 33 claims, 3 figures

    126.
    发明专利
    未知

    公开(公告)号：ID26307A

    公开(公告)日：2000-12-14

    申请号：ID20001859

    申请日：1999-03-18

    Applicant: BASF AG

    Inventor： BREINER 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.

    127.
    发明专利
    未知

    公开(公告)号：PT906280E

    公开(公告)日：2000-10-31

    申请号：PT97927060

    申请日：1997-05-28

    Applicant: BASF AG

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

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

    Abstract: PCT No. PCT/EP97/02763 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 28, 1997 PCT Pub. No. WO97/46528 PCT Pub. Date Dec. 11, 1997The invention relates to a process for reducing the dimerization of piperidines of the formula I where R1 to R4 are C1- to C6-alkyl, R1 and R2 and/or R3 and R4 together are a CH2 chain having 2 to 5 carbon atoms, which comprises adding to the piperidine from 0.001 to 0.2% by weight of a reducing agent of the formula MXH4-mYm, where M is an alkali metal, NR4, where R are identical or different C1-C4-alkyl groups, or an equivalent of an alkaline earth metal or an equivalent of zinc, X is boron or aluminum, Y is H or CN and m is 0 or 1. The invention also relates to a mixture of piperidines of the formula I, from 0.001 to 0.2% by weight of a reducing agent and from 1 to 1000 ppm of dimers of the piperidines of the formula I, and to the preparation of hindered amine light stabilizers therefrom.

    128.
    发明专利
    未知

    公开(公告)号：BR9812595A

    公开(公告)日：2000-08-01

    申请号：BR9812595

    申请日：1998-09-25

    Applicant: BASF AG

    Inventor： JULIUS MANFRED ,  SIEGEL HARDO ,  WITZEL TOM ,  SIEGEL WOLFGANG

    IPC: C07D211/58

    Abstract: The invention relates to a method for purifying 2,2,6,6-tetrasubstituted 4-amino-piperidines produced from the corresponding piperidin-4-ones, and subsequent distillation. According to the invention, the distilled 2,2,6,6-tetrasubstituted 4-amino-piperidine is reacted with hydrogen in the presence of a hydrating or dehydrating catalyst and the 4-amino piperidine is then separated from the reaction mixture.

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