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135 records (took 0.022 seconds)

    92.
    发明专利
    未知

    公开(公告)号：PT1070093E

    公开(公告)日：2002-10-31

    申请号：PT99916829

    申请日：1999-03-18

    Applicant: BASF AG

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

    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.

    93.
    发明专利
    未知

    公开(公告)号：DE69901486T2

    公开(公告)日：2002-08-29

    申请号：DE69901486

    申请日：1999-02-12

    Applicant: BASF AG

    Inventor： ILG OTTO ,  BREINER ULRIKE ,  JULIUS MANFRED

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

    Abstract: An inherently light- and heat-stabilized polyamide has at least one piperidine compound bonded to the backbone polymer chain and at least one 4-amino-2,2,6,6-tetramethylpiperidine compound bonded to the backbone polymer chain. The inherently light- and heat-stabilized polyamide may be used to form articles such as, for example, fibers, carpets, yarns, and textile fabrics.

    94.
    发明专利
    未知

    公开(公告)号：ES2169397T3

    公开(公告)日：2002-07-01

    申请号：ES97927086

    申请日：1997-05-30

    Applicant: BASF AG

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

    IPC: C07D211/58 ,  C07D211/56 ,  C07D221/20

    Abstract: PCT No. PCT/EP97/02822 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed May 30, 1997 PCT Pub. No. WO97/46529 PCT Pub. Date Dec. 11, 1997A process for purifying crude piperidines of the formula I where R1 to R4 are C1-C6-alkyl, or R1 and R2 and/or R3 and R4 together are a CH2-chain of 2 to 5 carbons, which comprises, in a first step, removing high-boiling substances and, if present, water from the crude piperidines by distillation; in a second step, adding from 0.01 to 5% by weight, based on the product of the first step, as a reducing agent; and, in a third step, isolating the piperidines by distillation.

    95.
    发明专利
    未知

    公开(公告)号：DE69901486D1

    公开(公告)日：2002-06-20

    申请号：DE69901486

    申请日：1999-02-12

    Applicant: BASF AG

    Inventor： ILG OTTO ,  BREINER ULRIKE ,  JULIUS MANFRED

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

    Abstract: An inherently light- and heat-stabilized polyamide has at least one piperidine compound bonded to the backbone polymer chain and at least one 4-amino-2,2,6,6-tetramethylpiperidine compound bonded to the backbone polymer chain. The inherently light- and heat-stabilized polyamide may be used to form articles such as, for example, fibers, carpets, yarns, and textile fabrics.

    98.
    发明专利
    未知

    公开(公告)号：TR200002324T2

    公开(公告)日：2000-12-21

    申请号：TR200002324

    申请日：1999-02-12

    Applicant: BASF AG

    Inventor： ILG OTTO ,  BREINER ULRIKE ,  JULIUS MANFRED

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

    Abstract: An inherently light- and heat-stabilized polyamide has at least one piperidine compound bonded to the backbone polymer chain and at least one 4-amino-2,2,6,6-tetramethylpiperidine compound bonded to the backbone polymer chain. The inherently light- and heat-stabilized polyamide may be used to form articles such as, for example, fibers, carpets, yarns, and textile fabrics.

    METHOD FOR PURIFYING 4-AMINO-PIPERIDINES
    100.
    发明专利
    METHOD FOR PURIFYING 4-AMINO-PIPERIDINES 未知

    公开(公告)号：SK4262000A3

    公开(公告)日：2000-10-09

    申请号：SK4262000

    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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