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1.发明专利
公开(公告)号：JP2000065608A
公开(公告)日：2000-03-03
申请号：JP22323099
申请日：1999-08-06
Applicant: BASF AG
Inventor： HILDEBRANDT VOLKER , BREEDE KNUT , HLAWITSCHKA WERNER
Abstract: PROBLEM TO BE SOLVED: To obtain a method for protecting a pressure reactor from failures caused by contamination while carrying out a reaction with a medium in a gas state or supercritical state. SOLUTION: In this method for metering, introducing a medium in a gas state or supercritical state to a pressure reactor 1, the pressure rector 1 has a reaction chamber 13 connected to a stirrer dome 5 via a feeder. A preliminarily determined volume flow or mass flow of the medium is introduced to the pressure reactor 1 so that a pressure in the stirrer dome 5 becomes larger than a pressure in the reaction chamber 13. The apparatus meters, introduces the medium in a gas state or supercritical state.
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公开(公告)号：CA2319745C
公开(公告)日：2006-05-09
申请号：CA2319745
申请日：1999-02-02
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , FUCHS EBERHARD
Abstract: The invention relates to a continuous method for producing a polyamide, comprising the following steps: (1) reaction of at least one aminonitrile with water at a temperature of between 90 and 400 .degree.C and a pressure of between 0.1 and 35 .times. 10 6 Pa in a tubular flow reactor containing a Bronsted acid catalyst selected from a beta zeolite, sheet silicate or titanium dioxide catalyst (2) further reaction of the reaction mixture at a temperature of between 150 and 400 .degree.C and a pressure which is lower than the pressure in step 1, where the temperature and pressure are selected such that a first gaseous phase and a first liquid or first solid phase or a mixture of a first solid and first liquid phase is obtained, and the first gaseous phase is separated; an d (3) addition of the first liquid and/or first solid phase to a gaseous or liquid phase containing water, at a temperature of between 150 and 370 .degree.C and a pressure of between 0.1 and 30 x 10 6 Pa, resulting in a product mixture.
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公开(公告)号：CZ292892B6
公开(公告)日：2003-12-17
申请号：CZ20003102
申请日：1999-02-23
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER
IPC: C08G69/16 , C07C231/02 , C08G69/04 , C08G69/08
Abstract: Polyamides are produced by reacting aminocarboxylic acid compounds of the general formula Hi2N-(CHi2)im-C(O)Re1 (I) wherein Re1 is OH, O-C1-12-alkyl or NRe2Re3, wherein Re2 and Re3 are independently hydrogen, alkyl containing 1 to 12 carbon atoms or cycloalkyl having 5 to 8 carbon atoms, and m is an integer from 3 to 12, optionally in a mixture with aminonitriles and their hydrolysis products and optionally in the presence of water, in a liquid phase at elevated pressure and elevated temperature in the presence of metal oxides as heterogeneous catalysts, the metal oxides being used in a form which permits mechanical removal from the reaction mixture and being removed from the reaction mixture during or after the polymerization.
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4.发明专利
公开(公告)号：CZ292872B6
公开(公告)日：2003-12-17
申请号：CZ20003127
申请日：1999-02-26
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , WEBER MARTIN , HILDEBRANDT VOLKER
IPC: C08G69/00 , C08G69/04 , C08L25/04 , C08L51/04 , C08L71/00 , C08L71/12 , C08L77/00 , C08L79/08 , C08L81/06 , C08L101/00
Abstract: The invented process for producing polymer blends by reacting at least one aminonitrile with water in the presence of thermoplastic polymers and optionally further polyamide-forming monomers comprises the following steps: (1) reacting at least one aminonitrile with water at a temperature ranging from 90 to 400 degC, and a pressure in the range of 0.1 to 35x10e6 Pa to obtain a reaction mixture, (2) further reacting the reaction mixture at a temperature from 150 to 400 degC, and a pressure which is lower than the pressure in step 1, whereby the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase and the first gas phase is separated from the first liquid or the first solid phase or the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water, which phase may contain thermoplastic polymers and optionally further polyamide-forming monomers, at a temperature ranging from 150 to 370 degC, and a pressure in the range of 0.1 to 30x10e6 Pa to obtain the polymer blend, wherein in one or more of the steps the thermoplastic polymers and optionally further polyamide-forming monomers are added. Claimed is also the use of the above-described polymer mixtures for producing fibers, films or shaped bodies.
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公开(公告)号：ES2193960T3
公开(公告)日：2003-11-16
申请号：ES00929550
申请日：2000-05-23
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , KRAUSS DIETER , LEEMANN MARTIN
Abstract: In a process for producing polyamides, a mixture comprising hexamethylenediamine and aminocapronitrile and obtained from the hydrogenation of adiponitrile is reacted with water and a dicarboxylic acid.
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Patent Agency Ranking
公开(公告)号：DE50001889D1
公开(公告)日：2003-05-28
申请号：DE50001889
申请日：2000-06-05
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , LUDWIG ALFONS
Abstract: A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.
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公开(公告)号：ES2181483T3
公开(公告)日：2003-02-16
申请号：ES99952498
申请日：1999-10-05
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER
Abstract: Disclosed are the use of lactams, aminocarboxylic acids or mixtures thereof as acceleratant or cocatalyst in the production of polyamides from aminonitriles and water, and a suitable process therefor.
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公开(公告)号：EG22273A
公开(公告)日：2002-12-31
申请号：EG18099
申请日：1999-02-25
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER
Abstract: In a process for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts, the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of or on completion of the polymerization.
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公开(公告)号：AT229047T
公开(公告)日：2002-12-15
申请号：AT00910666
申请日：2000-02-10
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , YAMAMOTO MOTONORI
Abstract: The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps:(10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer,(12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.
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公开(公告)号：PL350053A1
公开(公告)日：2002-11-04
申请号：PL35005300
申请日：2000-02-10
Applicant: BASF AG
Inventor： MOHRSCHALDT RALF , HILDEBRANDT VOLKER , YAMAMOTO MOTONORI
Abstract: The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps:(10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer,(12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed,(13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.
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