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公开(公告)号：SI1058705T1
公开(公告)日：2002-06-30
申请号：SI9930018
申请日：1999-02-22
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , PIPPER GUNTER , FUCHS EBERHARD
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公开(公告)号：DE59901399D1
公开(公告)日：2002-06-13
申请号：DE59901399
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 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 from 90 to 400° C. and a pressure from 0.1 to 35x106 Pa to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, 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 from 150 to 370° C. and a pressure from 0.1 to 30x106 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.
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公开(公告)号：HU0105495A2
公开(公告)日：2002-05-29
申请号：HU0105495
申请日：1999-02-11
Applicant: BASF AG
Inventor： HILDEBRANDT VOLKER , MOHRSCHLADT RALF , 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：DE59900796D1
公开(公告)日：2002-03-14
申请号：DE59900796
申请日：1999-02-22
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , PIPPER GUNTER , FUCHS EBERHARD
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：DE59900744D1
公开(公告)日：2002-02-28
申请号：DE59900744
申请日：1999-01-29
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , KRAUSS DIETER , HILDEBRANDT VOLKER
Abstract: The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps:(1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 15x106 Pa in a flow tube containing packing elements of a Brönsted acid catalyst selected from beta-zeolite, sheet-silicate or titanium dioxide packing elements and metallic packing elements to obtain a reaction mixture,(2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in step 1, 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 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 at a temperature from 150 to 370° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.
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Patent Agency Ranking
公开(公告)号：BG105690A
公开(公告)日：2002-02-28
申请号：BG10569001
申请日：2001-07-10
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER
Abstract: The invention relates to the use of metal oxides as heterogeneous catalysts in a method for the production of polyamide by polymerization of lactams and possibly other polyamide-forming monomers. According to said method the metal oxides are used in a form which permits their mechanical separation from the reaction mixture and during or at the end of polymerization are separated from the reaction mixture so as to reduce the content of extractable compounds in the polyamide obtained in this way. 10 claims, 1 figure
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公开(公告)号：BR0008116A
公开(公告)日：2001-11-06
申请号：BR0008116
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：BR0007498A
公开(公告)日：2001-10-23
申请号：BR0007498
申请日：2000-01-13
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER
Abstract: Described is the use of metal oxides as heterogeneous catalysts in a process for producing polyamides by polymerization of lactams and optionally further polyamide-forming monomers wherein the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture during or after the polymerization, to reduce the extractables content of the polyamide obtained.
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公开(公告)号：PL342622A1
公开(公告)日：2001-06-18
申请号：PL34262299
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 Iwhere R1 is OH, O-C1-12-alkyl or NR2R3, where R2 and R3 are independently hydrogen, C1-12-alkyl or C5-8-cycloalkyl, 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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公开(公告)号：PL342294A1
公开(公告)日：2001-06-04
申请号：PL34229499
申请日：1999-02-02
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , FUCHS EBERHARD
Abstract: A continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises:(1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 35x106 Pa in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide to obtain a reaction mixture,(2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, in the presence of a Brönsted acid catalyst as in (1), 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 from 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 at a temperature from 150 to 370° C. and a pressure from 0.1 to 30x106 Pa to obtain a product mixture.
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