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公开(公告)号：AU6296298A
公开(公告)日：1998-09-09
申请号：AU6296298
申请日：1998-02-09
Applicant: BASF AG
Inventor： MERKLE HANS RUPERT , EVA RONALD R , FRANKE DIRK , JONES SIMON A , MATTMANN WOLFGANG , MUNZINGER MANFRED
Abstract: PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.
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公开(公告)号：CZ176497A3
公开(公告)日：1998-01-14
申请号：CZ176497
申请日：1995-12-01
Applicant: BASF AG
Inventor： KALCK ULRICH , JONES SIMON A , BASSLER PETER , PRIESTER CLAUS ULRICH , KOPIETZ MICHAEL
IPC: C07D201/12
Abstract: Caprolactam is obtained from mixtures which contain polymers or thermoplastic molding materials having the repeating unit -N(H)-(CH2)5-C(O)- (a) by cleavage at elevated temperatures in the presence of a base under reduced pressure or (b) in the presence of water, by using a mixture essentially comprising from 50 to 99.9% by weight of a polymer or of a thermoplastic molding material having the repeating unit -N(H)-(CH2)5-C(O)- from 0.1 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes, from 0 to 10% by weight of organic and/or inorganic additives, from 0 to 40% by weight of non-polyamide-containing polymers and from 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, and carrying out the cleavage in the presence of a base under reduced pressure, the water content of the mixture used being not more than 0.01% by weight, or carrying out the cleavage in the presence of water without the addition of acid or base at from 270 DEG to 350 DEG C. and a weight ratio of water to polymer or thermoplastic molding material of from 1:1 to 20:1 and in a reaction time of less than 3 hours.
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公开(公告)号：BR9509987A
公开(公告)日：1997-12-30
申请号：BR9509987
申请日：1995-12-01
Applicant: BASF AG
Inventor： KOPIETZ MICHAEL , HANDERMAN ALAN , JONES SIMON A , KALCK ULRICH , PRIESTER CLAUS-ULRICH , AUER HEINZ , RITZ JOSEF , FUCHS HUGO , PIJL PAUL
IPC: B01J8/10 , C07D201/12 , C08G69/14 , C08J11/16
Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit -[-N(H)-(CH2)5-C(O)-] or mixtures consisting essentially of from 50 to 99.99% by weight of a polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes, from 0 to 10% by weight of organic and/or inorganic additives, from 0 to 40% by weight of non-polyamide-containing polymers and from 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, in at least two depolymerization reactors connected in series.
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公开(公告)号：SK282229B6
公开(公告)日：2001-12-03
申请号：SK66897
申请日：1995-12-01
Applicant: BASF AG
Inventor： KALCK ULRICH , JONES SIMON A , BASSLER PETER , PRIESTER CLAUS ULRICH , KOPIETZ MICHAEL
IPC: C07D201/12
Abstract: Caprolactam is obtained from mixtures which contain polymers or thermoplastic molding materials having the repeating unit -N(H)-(CH2)5-C(O)- (a) by cleavage at elevated temperatures in the presence of a base under reduced pressure or (b) in the presence of water, by using a mixture essentially comprising from 50 to 99.9% by weight of a polymer or of a thermoplastic molding material having the repeating unit -N(H)-(CH2)5-C(O)- from 0.1 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes, from 0 to 10% by weight of organic and/or inorganic additives, from 0 to 40% by weight of non-polyamide-containing polymers and from 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, and carrying out the cleavage in the presence of a base under reduced pressure, the water content of the mixture used being not more than 0.01% by weight, or carrying out the cleavage in the presence of water without the addition of acid or base at from 270 DEG to 350 DEG C. and a weight ratio of water to polymer or thermoplastic molding material of from 1:1 to 20:1 and in a reaction time of less than 3 hours.
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公开(公告)号：PL335406A1
公开(公告)日：2000-04-25
申请号：PL33540698
申请日：1998-02-09
Applicant: BASF AG
Inventor： MERKLE HANS RUPERT , EVA RONALD R , FRANKE DIRK , JONES SIMON A , MATTMANN WOLFGANG , MUNZINGER MANFRED
Abstract: PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.
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Patent Agency Ranking
公开(公告)号：MX9704250A
公开(公告)日：1997-09-30
申请号：MX9704250
申请日：1995-12-01
Applicant: BASF AG
Inventor： KALCK ULRICH , JONES SIMON A , BASSLER PETER , PRIESTER CLAUS ULRICH , KOPIETZ MICHAEL
IPC: C07D201/12
Abstract: Se obtiene caprolactama a partir de mezclas que contienen polímeros o materiales de moldeo termoplásticos que tienen la unidad respectiva -[-N(H)-(CH2)5-C(O)-]-, (a) mediante despolimerizacion a temperaturas elevadas en presencia de una base bajo presion reducida o (b) en presencia de agua, utilizando una mezcla que comprende esencialmente de 50 a 99.9% en peso de un polímero o de un material de moldeo termoplástico que tiene la unidad repetitiva -[-N(H)-(CH2)5-C(O)-]-, de 0.1 a 50% en peso de aditivos seleccionados a partir del grupo que consiste en rellenos inorgánicos, pigmentos y colorantes orgánicos e inorgánicos, de 0 a 10% en peso de aditivos orgánicos y/o inorgánicos, de 0 a 40% en peso de un polímero que no contienen poliamida y de 0a 20% en peso de poliamidas, con la excepcion de policaprolactama y copoliamidas preparadas a partir de caprolactama, y llevar a cabo la despolimerizacion en presencia de una base bajo presion reducida, el contenido de agua de la mezcla utilizada no siendo más de 0.01% en peso, o llevar a cabo la despolimerizacion en presencia de agua sin la adicion deácido o base a de 270 a 350 degree C y una relacion en peso de agua a polímero o material de moldeo termoplástico de 1:1 a 20:1 y en un tiempo de reaccion de menos de 3 horas.
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公开(公告)号：BR9807583A
公开(公告)日：2000-03-21
申请号：BR9807583
申请日：1998-02-09
Applicant: BASF AG
Inventor： MERKLE HANS RUPERT , EVA RONALD R , FRANKE DIRK , JONES SIMON A , MATTMANN WOLFGANG , MUNZINGER MANFRED
Abstract: PCT No. PCT/EP98/00705 Sec. 371 Date Jul. 28, 1999 Sec. 102(e) Date Jul. 28, 1999 PCT Filed Feb. 9, 1998 PCT Pub. No. WO98/37054 PCT Pub. Date Aug. 27, 1998A process for the isolation of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid of the formula I from an aqueous solution of its metal salt comprises a) reacting the metal salt of 3-[2-chloro-4-(trifluoromethyl)phenoxy]benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system of organic and aqueous phase has formed; and c) separating the organic phase from the aqueous phase.
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公开(公告)号：DE19823899A1
公开(公告)日：1999-12-02
申请号：DE19823899
申请日：1998-05-28
Applicant: BASF AG
Inventor： MATTMANN WOLFGANG , KOENIG JOSEF , JONES SIMON A , EDINGER CHRISTINE , HEMMER GERD
Abstract: A tanker (I) is washed with high pressure water (1) with the effluent liquid passing to storage/disposal (II), and any displaced vapors being pumped away by a pump (III) via a water disentrainment device (IV) and fed into a combustion chamber (V) from where combustion products are cooled through a heat recovery unit (VI) before being washed with alkaline solution in a scrubber (VII) and discharged to the atmosphere via a stack (VIII). A tanker (I), in a cleaning station, is washed with high pressure water (1), optionally containing detergents, with the effluent liquid passing to storage/disposal (II), and any displaced vapors, etc. being pumped away by a pump (III) via a water disentrainment device (IV) and fed into a combustion chamber (V) maintained at 800-1200 deg C. The combustion products from the furnace (V) are cooled through a heat recovery unit (VI) before being washed with alkaline solution in a scrubber (VII) and discharged to atmosphere via a stack (VIII). The vapor pump may be a liquid ring pump or a fan, etc.
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公开(公告)号：NO992550L
公开(公告)日：1999-11-29
申请号：NO992550
申请日：1999-05-27
Applicant: BASF AG
Inventor： MATTMANN WOLFGANG , KOENIG JOSEF , JONES SIMON A , EDINGER CHRISTINE , EDINGER MICHAEL , HEMMER GERD
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公开(公告)号：SK66897A3
公开(公告)日：1998-03-04
申请号：SK66897
申请日：1995-12-01
Applicant: BASF AG
Inventor： KALCK ULRICH , JONES SIMON A , BASSLER PETER , PRIESTER CLAUS U , KOPIETZ MICHAEL
IPC: C07D201/12
Abstract: Caprolactam is obtained from mixtures which contain polymers or thermoplastic molding materials having the repeating unit -[-N(H)-(CH2)5-C(O)-]-, by depolymerization at elevated temperatures in the presence of a base under reduced pressure or in the presence of water, by using a mixture essentially comprising, from 50 to 99.9 % by weight of a polymer or of a thermoplastic molding material having the repeating unit -[-N(H)-(CH2)5-C(O)-]-; from 0.1 to 50 % by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes; from 0 to 10 % by weight of organic and/or inorganic additives; from 0 to 40 % by weight of non-polyamide-containing polymers and from 0 to 20 % by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, and carrying out the depolymerization in the presence of a base under reduced pressure, the water content of the mixture used being not more than 0.01 % by weight, or carrying out the depolymerization in the presence of water without the addition of acid or base at from 270 to 350 C and pressure from 80 to 150 kPa and a weight ratio of water to polymer or thermoplastic molding material of from 1 : 1 to 20 : 1 and in a reaction time of less than 3 hours.
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