公开(公告)号：SK11742000A3

公开(公告)日：2001-04-09

申请号：SK11742000

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.

公开(公告)号：SK11622000A3

公开(公告)日：2001-04-09

申请号：SK11622000

申请日：1999-02-19

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  WARZELHAN VOLKER

IPC: B01D11/04 ,  B01D11/02 ,  C08G69/04 ,  C08G69/28 ,  C08G69/46

Abstract: Polyamide particles, or polymer particles comprising polyamides, are extracted with aqueous solutions of aminonitiles and optionally further polyamide-forming monomers, polyamide-forming oligomers or mixtures thereof.

公开(公告)号：SK11612000A3

公开(公告)日：2001-04-09

申请号：SK11612000

申请日：1999-02-22

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

IPC: C08G69/18 ,  C08G69/20

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.

公开(公告)号：SK10812000A3

公开(公告)日：2001-04-09

申请号：SK10812000

申请日：1999-01-25

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16

Abstract: The invention relates to a discontinuous method for producing a polyamide by reacting a mixture containing at least one aminonitrile and possibly monomers suitable for producing polyamides with water. Said method consists of the following steps: (1) reacting the mixture with water at a temperature of between 90 and 400 C and a pressure of between 0.1 and 35 x 10exp(6) Pa, resulting in a reaction mixture; (2) further reacting the reaction mixture at a temperature of between 150 and 400 C and a pressure which is lower than the pressure in step (1), whereby the temperature and pressure are selected in such a way that a first gaseous phase and a first liquid phase or a first solid phase or a mixture of the first solid and first liquid phase are obtained, and that the first gaseous phase is separated from the first liquid or first solid phase or from the mixture of the first liquid and first solid phase; and (3) mixing the first liquid or first solid phase or the mixture of the first liquid and first solid phase with a gaseous or liquid phase containing water, at a temperature of between 150 and 370 C and a pressure of between 0.1 and 30 x 10exp(6) Pa, which yields a product mixture. According to the method step (1) is carried out in the presence of a Bronsted acid catalyst, selected from a beta-zeolite, sheet-silicate or solid-bed catalyst, consisting essentially of TiO2 with between 70 and 100 weight percent anatase and between 0 and 30 weight percent rutile, in which up to 40 weight percent of the titanium dioxide can be substituted with tungsten oxide, and steps (2) and (3) can be carried out in the presence of said catalyst.

公开(公告)号：TR200002251T2

公开(公告)日：2001-01-22

申请号：TR200002251

申请日：1999-02-02

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  FUCHS EBERHARD

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/08 ,  C08G69/16 ,  C08G69/28 ,  C08K3/00 ,  C08K3/011

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.

公开(公告)号：CZ20003101A3

公开(公告)日：2000-12-13

申请号：CZ20003101

申请日：1998-12-16

Applicant: BASF AG

Inventor： LEEMANN MARTIN ,  HILDEBRANDT VOLKER ,  THIELE HEINO ,  ESPIG STEFAN

IPC: C08G69/00 ,  C08G69/04

Abstract: The preparation of polyamides, their oligomers or mixtures thereof, where appropriate with other reaction products, takes place by reacting amino nitrites (A) and, where appropriate, other polyamide-forming monomers and/or oligomers with water (D) in a reactive distillation, wherein the reaction product (P) is discharged from the bottom of the reactive distillation apparatus, and ammonia (N) which is produced and, where appropriate, other low molecular weight compounds which are produced, and water, are taken off overhead.

公开(公告)号：ZA9901514B

公开(公告)日：2000-11-27

申请号：ZA9901514

申请日：1999-02-25

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

IPC: C08G69/18 ,  C08G69/20 ,  C08G ,  C08L

CPC classification number: C08G69/20 ,  C08G69/18

公开(公告)号：CZ20003087A3

公开(公告)日：2000-11-15

申请号：CZ20003087

申请日：1999-02-22

Applicant: BASF AG

Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

IPC: C08G69/18 ,  C08G69/20 ,  C08G69/14 ,  C08F4/18

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.

公开(公告)号：ID25867A

公开(公告)日：2000-11-09

申请号：ID20001645

申请日：1998-12-16

Applicant: BASF AG

Inventor： LEHMANN MARTIN ,  HILDEBRANDT VOLKER ,  THIELE HEINO ,  ESPIG STEFAN

IPC: C08G69/00 ,  C08G69/04

Abstract: The preparation of polyamides, their oligomers or mixtures thereof, where appropriate with other reaction products, takes place by reacting amino nitrites (A) and, where appropriate, other polyamide-forming monomers and/or oligomers with water (D) in a reactive distillation, wherein the reaction product (P) is discharged from the bottom of the reactive distillation apparatus, and ammonia (N) which is produced and, where appropriate, other low molecular weight compounds which are produced, and water, are taken off overhead.

公开(公告)号：BR9908284A

公开(公告)日：2000-10-31

申请号：BR9908284

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.