公开(公告)号：ES2145492T3

公开(公告)日：2000-07-01

申请号：ES96938170

申请日：1996-11-11

Applicant: BASF AG

Inventor： KRATZ DETLEF ,  STAMMER ACHIM ,  WITZEL TOM ,  BRUDERMULLER MARTIN

IPC: C07C27/02 ,  C07C29/09 ,  C07C29/128 ,  C07C29/38 ,  C07C31/22 ,  C07C35/08 ,  C07C67/02 ,  C07C67/08 ,  C07C67/44 ,  C07C69/06

Abstract: PCT No. PCT/EP96/04922 Sec. 371 Date Oct. 5, 1998 Sec. 102(e) Date Oct. 5, 1998 PCT Filed Nov. 11, 1996 PCT Pub. No. WO97/17313 PCT Pub. Date May 15, 1997A process for the preparation of polyalcohols comprises the stages: (a) Reaction of an alkanal or ketone with formaldehyde in aqueous solution in the presence of a tertiary amine, to form a formates containing polyalcohol product mixture, (b) removal of water, excess tertiary amine, excess formaldehyde (c) heating of remaining mixture from (b) with removal of further formaldehyde and tertiary amine with formation of the formates of the polyalcohol, (d) transfer of tertiary amine removed from stage (b) and/or from stage (c), to synthesis stage (a) and/or to the subsequent transesterification stage (e), (e) transesterification of the resulting formates of the polyalcohol from stage (c) with an alcohol of the formula ROH in the presence of a transesterification catalyst to give polyalcohols and formates of the formula where R is a hydrocarbon radical, preferably alkyl of 1-6, particularly preferably 1-2, carbon atoms, and (f) isolation of the polyalcohols.

公开(公告)号：NO307964B1

公开(公告)日：2000-06-26

申请号：NO975268

申请日：1997-11-17

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM ,  FLICK KLEMENS

IPC: C07D201/08

Abstract: Production of cyclic lactams by the reaction of amino carboxylic acid nitriles with water, performed in the liquid phase in the presence of heterogeneous catalysts based on titanium dioxide with a rutile content in the range from 0.1 to 95 wt.% and an anatase content in the range from 99.9 to 5 wt.% in relation to the total titanium dioxide content.

公开(公告)号：DE59701590D1

公开(公告)日：2000-06-08

申请号：DE59701590

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: 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.

公开(公告)号：AT192434T

公开(公告)日：2000-05-15

申请号：AT97927060

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: 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.

公开(公告)号：PL330278A1

公开(公告)日：1999-05-10

申请号：PL33027897

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.

公开(公告)号：CZ284794B6

公开(公告)日：1999-03-17

申请号：CZ144596

申请日：1994-11-15

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D223/10 ,  C07D201/08

Abstract: PCT No. PCT/EP94/03782 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Nov. 15, 1994 PCT Pub. No. WO95/14665 PCT Pub. Date Jun. 1, 1995Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.

公开(公告)号：BR9608470A

公开(公告)日：1998-12-29

申请号：BR9608470

申请日：1996-05-07

Applicant: BASF AG

Inventor： WITZEL TOM ,  FUCHS EBERHARD ,  FLICK KLEMENS

IPC: C07D201/08

Abstract: Production of cyclic lactams by the reaction of amino carboxylic acid nitriles with water, performed in the liquid phase in the presence of heterogeneous catalysts based on titanium dioxide with a rutile content in the range from 0.1 to 95 wt.% and an anatase content in the range from 99.9 to 5 wt.% in relation to the total titanium dioxide content.

公开(公告)号：SK154897A3

公开(公告)日：1998-07-08

申请号：SK154897

申请日：1996-05-07

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM ,  FLICK KLEMENS

IPC: C07D201/08

Abstract: Production of cyclic lactams by the reaction of amino carboxylic acid nitriles with water, performed in the liquid phase in the presence of heterogeneous catalysts based on titanium dioxide with a rutile content in the range from 0.1 to 95 wt.% and an anatase content in the range from 99.9 to 5 wt.% in relation to the total titanium dioxide content.

公开(公告)号：MX9703920A

公开(公告)日：1998-05-31

申请号：MX9703920

申请日：1995-11-22

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  WITZEL TOM

IPC: C07D201/12

Abstract: La invencion se refiere al compuesto caprolactama que se prepara por desdoblamiento de los oligomeros o polímeros que contienen esencialmente la unidad repetidora -[-N(H)-(CH2)5-C(O)-]- en presencia de un catalizador a temperaturas elevadas, mediante un proceso en el que el desdoblamiento se lleva a cabo en fase líquida, en presencia de un catalizador heterogéneo y de un solvente orgánico.

公开(公告)号：MX9708836A

公开(公告)日：1998-03-31

申请号：MX9708836

申请日：1996-05-24

Applicant: BASF AG

Inventor： HOLDERBAUM MARTIN ,  BECK KARL ,  AUMUELLER ALEXANDER ,  WITZEL TOM ,  VOIT GUIDO

IPC: C07C253/30 ,  C07C255/41

Abstract: Un proceso para preparar los ésteres 2-ciano-3,3-diarilacrílicos de la formula general I, en donde R1 y R2 son hidrogeno, grupos alquilo de C1-C12, grupos alcoxi de C1-C12 o grupos dialquil (de C1-C4)amino y R3 es un grupo alquilo de C4-C18 que puede ser interrumpido por átomos de oxígeno que funcionan comoéter, haciendo reaccionar una benzofenona imina de la formula general II, con un éster cianoacético de la formula general III, en donde la reaccion se lleva a cabo desde 20 a 60 degree C y, durante ésta, el amoniaco liberado se elimina continuamente de la mezcla de reaccion con la ayuda de una corriente de gas o reduciendo la presion de 900 a 100 mbar.