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公开(公告)号：ES2207569T3
公开(公告)日：2004-06-01
申请号：ES00993245
申请日：2000-11-29
Applicant: BASF AG
Inventor： LUDWIG ALFONS , PILLE RAGNHILD , PIPPER GUNTER
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公开(公告)号：AT249326T
公开(公告)日：2003-09-15
申请号：AT00993245
申请日：2000-11-29
Applicant: BASF AG
Inventor： LUDWIG ALFONS , PILLE RAGNHILD , PIPPER GUNTER
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公开(公告)号：DE50002618D1
公开(公告)日：2003-07-24
申请号：DE50002618
申请日：2000-11-15
Applicant: BASF AG
Inventor： DEININGER JUERGEN , GOETZ WALTER , LUDWIG ALFONS , PIPPER GUNTER
IPC: C08J5/18 , C08G69/00 , C08G69/02 , C08G69/04 , C08G69/14 , C08G69/26 , C08G69/28 , C08G69/36 , C08G69/48 , D01F6/80
Abstract: A process for continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) comprisesreacting a mixture (IV) comprising a diamine (II), a dicarboxylic acid (III) and water in a first reaction zone at a pressure in the range from 1.3*10 to 2.5*10 Pa in the entry zone of the reaction zone and at a temperature above the melting point of polymer (V) to a conversion, based on the molar amounts of diamine (II) and dicarboxylic acid (III), of at least 80% to form a polymer (V),reacting a mixture (VI) comprising lactam (I) and water in a second reaction zone at a pressure in the range from 5*10 to 40*10 Pa and at a temperature above the melting point of polymer (VII) to a conversion, based on the molar amount of lactam (I), of at least 80% to form a polymer (VII),then reacting polymer (V) and polymer (VII) with each other in a third reaction zone at a pressure in the range from 1*10 to 1.5*10 Pa in the entry zone of the reaction zone at temperatures above the melting point of polymer (VIII) to form a polymer (VIII), said polymer (VIII) having a 95° C. water extractables content, based on lactam (I), diamine (II) and dicarboxylic acid (III), of not more than 10% by weight, andthen extracting the polymer (VIII) with water to obtain the copolyamide.
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公开(公告)号：DE59805550D1
公开(公告)日：2002-10-17
申请号：DE59805550
申请日：1998-11-24
Applicant: BASF AG
Inventor： ERBES JOERG , LUDWIG ALFONS , PIPPER GUNTER
Abstract: A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an aqueous extractant comprising from 40 to 95% by weight of epsi-caprolactam in a first zone at from 100 to 140° C., and then effecting an aftertreatment with water in a second zone. The caprolactam can then be extracted in a conventional manner. The process provides for economical production of polyamide having a low dimer content.
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公开(公告)号：BG106179A
公开(公告)日：2002-09-30
申请号：BG10617901
申请日：2001-12-04
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , HILDEBRANDT VOLKER , LUDWIG ALFONS
Abstract: The invention relates to a method for preparing polyamides by reacting at least one lactam and optionally other polyamide-forming monomers with aqueous monomeric and oligomeric extracts obtained when the polymer is extracted with water in the production of polyamides, whereby the water content of the reaction mixture ranges from 0.5 to 13 per cent by weight. According to said method, reaction is carried out in the presence of metal oxides, beta zeolites, sheet silicates or silica gels which may be doped as heterogeneous catalysts. The heterogeneous catalysts are used in a form enabling mechanical separation from the reaction mixture and removal from the reaction mixture during or after conclusion of polymerization. 8 claims
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Patent Agency Ranking
公开(公告)号：BR0015991A
公开(公告)日：2002-08-06
申请号：BR0015991
申请日：2000-11-29
Applicant: BASF AG
Inventor： LUDWIG ALFONS , PILLE RAGNHILD , PIPPER GUNTER
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公开(公告)号：TR200103533T2
公开(公告)日：2002-05-21
申请号：TR200103533
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：CZ20014385A3
公开(公告)日：2002-03-13
申请号：CZ20014385
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：CO5060544A1
公开(公告)日：2001-07-30
申请号：CO98069224
申请日：1998-11-24
Applicant: BASF AG
Inventor： HUNGER HANS-HARALD , LUDWIG ALFONS , NEUBERG RAINER , SAUER THOMAS , WILMS AXEL
Abstract: Un proceso para la preparación de poliamidas provenientes de almenos una lactama con o sin monómeros adicionales y aditivos de costumbre y llenadores, que comprendea) Concentrar el extracto de agua de lavado de la extracción de poliamida a un contenido de extraíbles de no más del 85% en peso, b) Ajustar el contenido de agua del concentrado resultante a 0,5 a 13% en peso por la adición de lactama fresca, c) Someter la mezcla resultante a polimerización bajo condiciones de formación de poliamida, d) Efectuar al menos una expansión adiabática durante la polimerización para reducir el contenido de agua.
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公开(公告)号：CA2392736A1
公开(公告)日：2001-06-07
申请号：CA2392736
申请日：2000-11-15
Applicant: BASF AG
Inventor： LUDWIG ALFONS , GOTZ WALTER , DEININGER JURGEN , PIPPER GUNTER
IPC: C08J5/18 , C08G69/00 , C08G69/02 , C08G69/04 , C08G69/14 , C08G69/26 , C08G69/28 , C08G69/36 , C08G69/48 , D01F6/80
Abstract: The invention relates to a method for the continuous production of copolyamides which are based on a lactame (I), a diamine (II) and a dicarboxylic acid (III). The inventive method is characterised in that a mixture (IV) containing a diamine (II), a dicarboxylic acid (III) and water is converted to a polymer in a first reaction area at a pressure of 1,3*105 to 2,5*105 Pa in the entry part of the reaction area, at a temperature above th e melting point of the polymer (V) and with a degree of conversion of at least 80 % in relation to the molar quantities of diamine (II) and dicarboxylic ac id (III), in that a mixture (VI) containing lactame (I) and water is converted to a polymer (VII) in a second reaction area at a pressure of 5*105 to 40*105 P a, at a temperature above the melting point of the polymer (VII) and with a degree of conversion of at least 80 % in relation to the molar quantity of lactame (I), in that polymer (V) and polymer (VII) are then reacted with eac h other in a third reaction area at a pressure of 1*105 to 1,5*105 Pa in the entry part of the reaction area, at temperatures above the melting temperatu re of the polymer (VIII), to produce the polymer (VIII). Polymer (VIII) contain s a maximum of 10 wt. % constituents that are extractable with water at a temperature of 95 ~C, inrelation to lactame (I), diamine (II) and dicarboxylic acid (III). The polymer (VIII) is then extracted with water so as to obtain the copolyamide. The invention also relates to copolyamides obtain ed using this method and to their use in the production of fibres, sheet structures and moulded bodies which are based on these copolyamides.
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