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公开(公告)号：CZ291603B6
公开(公告)日：2003-04-16
申请号：CZ20003101
申请日：1998-12-16
Applicant: BASF AG
Inventor： LEEMANN MARTIN , HILDEBRANDT VOLKER , THIELE HEINO , ESPIG STEFAN
Abstract: The present invention relates to a process for preparing polyamides, their oligomers or mixtures thereof, optionally with other reaction products, by reacting aminonitriles (A) and optionally other monomers and/or oligomers forming polyamides with water (D) during reactive distillation. The preparation is characterized in that the reaction product (P) is discharged during the reactive distillation from the bottom of the reactive distillation apparatus, while ammonia (N) and optionally other low-molecular compounds and water formed thereby are withdrawn from the head thereof.
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公开(公告)号：BG104694A
公开(公告)日：2001-05-31
申请号：BG10469400
申请日：2000-08-17
Applicant: BASF AG
Inventor： LEEMANN MARTIN , HILDEBRANDT VOLKER , THIELE HEINO , ESPIG STEFAN
Abstract: The invention relates to a method for producing polyamides, their oligomers or their mixtures, possibly with other reaction products, by reacting aminonitriles (A) and possibly other polyamide-forming monomers and/or oligomers with water (D) by reactive distillation. The reaction product (P) is extracted from the column bottom in the reactive distillation device and resulting ammonia (N), as well as possible other resulting compounds having a low molecular weight, and water are withdrawn at the head of the column. 9 claims, 1 figure
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公开(公告)号：SK12502000A3
公开(公告)日：2001-04-09
申请号：SK12502000
申请日：1998-12-16
Applicant: BASF AG
Inventor： LEEMANN MARTIN , HILDEBRANDT VOLKER , THIELE HEINO , ESPIG STEFAN
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.
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公开(公告)号：CA2321848C
公开(公告)日：2008-02-05
申请号：CA2321848
申请日：1998-12-16
Applicant: BASF AG
Inventor： ESPIG STEFAN , HILDEBRANDT VOLKER , THIELE HEINO , LEEMANN MARTIN
Abstract: The invention relates to a method for producing polyamides, their oligomers or their mixtures, possibly with other reaction products, by reacting aminonitriles (A) and possibly other polyamide-forming monomers and/or oligomers with water (D) by reactive distillation. The reaction product (P) is extracted from the column bottom in the reactive distillation device and resulting ammonia (N), as well as possibly other resulting compounds having a low molecular weight, and water are withdrawn at the head of the column.
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公开(公告)号：ES2174543T3
公开(公告)日：2002-11-01
申请号：ES98966341
申请日：1998-12-16
Applicant: BASF AG
Inventor： LEEMANN MARTIN , HILDEBRANDT VOLKER , THIELE HEINO , ESPIG STEFAN
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.
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Patent Agency Ranking
公开(公告)号：CA2321848A1
公开(公告)日：1999-09-02
申请号：CA2321848
申请日：1998-12-16
Applicant: BASF AG
Inventor： LEEMANN MARTIN , THIELE HEINO , HILDEBRANDT VOLKER , ESPIG STEFAN
Abstract: The invention relates to a method for producing polyamides, their oligomers or their mixtures, possibly with other reaction products, by reacting aminonitriles (A) and possibly other polyamide-forming monomers and/or oligomers with water (D) by reactive distillation. The reaction product (P) is extracted from the column bottom in the reactive distillation device and resulting ammonia (N), as well as possibly other resulting compounds having a low molecular weight, and water are withdrawn at the head of the column.
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公开(公告)号：FI882328A
公开(公告)日：1988-11-20
申请号：FI882328
申请日：1988-05-18
Applicant: BASF AG
Inventor： GOESELE WILHELM , NONN GUENTHER , SCHREINER SIEGFRIED , SEID BERHARD , THIELE HEINO
Abstract: Highly concentrated pumpable hydrosulphite pastes which are free of sediments are prepared from solid and liquid feed materials by continuously mixing and dispersing pulverulent sodium dithionite (2) and an organic liquid (8) inert towards sodium dithionite in an intensive mixer (5) comprising mixing and dispersing elements arranged in steps.
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公开(公告)号：PL342595A1
公开(公告)日：2001-06-18
申请号：PL34259598
申请日：1998-12-16
Applicant: BASF AG
Inventor： LEEMANN MARTIN , HILDEBRANDT VOLKER , THIELE HEINO , ESPIG STEFAN
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.
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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
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.
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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
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.
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