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公开(公告)号：AT17720T
公开(公告)日：1986-02-15
申请号：AT83111705
申请日：1983-11-23
Applicant: BASF AG
Inventor： BAUR KARL GERHARD DR , DIEHL VOLKER DR , STOPS PETER , HELLBACH HANS , BRUNNER ERWIN DR
IPC: C07D213/82 , C07D213/803 , C07D213/81
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公开(公告)号：MY137951A
公开(公告)日：2009-04-30
申请号：MYPI20041366
申请日：2004-04-14
Applicant: BASF AG
Inventor： DIEHL VOLKER DR , JAGER ULRICH DR , HAMMON ULRICH DR , SCHRODER JURGEN DR , RISSEL STEFFEN
Abstract: (METH)ACRYLIC MONOMERS ARE SEPARATED BY A THERMAL SEPARATION PROCESS BY ASCENDING AT LEAST ONE ASCENDING GASEOUS STREAM IN A SEPARATING COLUMN CONTAINING A SEQUENCE OF MASS TRANSFER TRAYS AND A LIQUID STREAM THAT CONTAINS DISSOLVED POLYMERIZATION INHIBITOR WHICH DESCENDS IN THE SEPARATING COLUMN, AND IN AT LEAST ONE OF THE STREAMS BEING (METH)ACRYLIC MONOMERS; AND SPRAYING THE INNER SURFACE OF THE SEPARATING COLUMN WITH THE DESCENDING LIQUID STREAM THAT CONTAINS THE DISSOLVED POLYMERIZATION INHIBITOR, AND THE SEPARATING COLUMN HAVING INTERNALS, CERTAIN AREAS OF WHICH ARE SHADOW REGIONS OF THE SPRAYED DESCENDING LIQUID STREAM; AND WHICH SHADOW REGIONS ARE EQUIPPED BY COVERING MEANS (2) WHICH PREVENT CONTACT OF THE SHADOW REGIONS WITH (METH)ACRYLIC MONOMERS AND CONSEQUENTLY UNDESIRED POLYMERIZATION OF MONOMER.
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公开(公告)号：DE3244522A1
公开(公告)日：1984-06-07
申请号：DE3244522
申请日：1982-12-02
Applicant: BASF AG
Inventor： BAUR KARL GERHARD DR , DIEHL VOLKER DR , STOPS PETER , HELLBACH HANS , BRUNNER ERWIN DR
IPC: C07D213/82 , C07D213/803 , C07D213/81
Abstract: A process for the preparation of nicotinamide by amidation of a nicotinic acid/nicotinamide melt, vacuum distillation of the amidation mixture, removal of the nicotinamide as the bottom product and recycling of the top product, depleted with respect to nicotinamide, into the amidation stage together with addition of fresh amounts of nicotinic acid.
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公开(公告)号：ES2133171T3
公开(公告)日：1999-09-01
申请号：ES95115769
申请日：1995-10-06
Applicant: BASF AG
Inventor： EGLY HORST , DIEHL VOLKER DR , JORG KLAUS DR
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公开(公告)号：DE59505892D1
公开(公告)日：1999-06-17
申请号：DE59505892
申请日：1995-10-06
Applicant: BASF AG
Inventor： EGLY HORST , DIEHL VOLKER DR , JOERG KLAUS DR
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Patent Agency Ranking
公开(公告)号：DE3362041D1
公开(公告)日：1986-03-13
申请号：DE3362041
申请日：1983-11-23
Applicant: BASF AG
Inventor： BAUR KARL GERHARD DR , DIEHL VOLKER DR , STOPS PETER , HELLBACH HANS , BRUNNER ERWIN DR
IPC: C07D213/82 , C07D213/803 , C07D213/81
Abstract: A process for the preparation of nicotinamide by amidation of a nicotinic acid/nicotinamide melt, vacuum distillation of the amidation mixture, removal of the nicotinamide as the bottom product and recycling of the top product, depleted with respect to nicotinamide, into the amidation stage together with addition of fresh amounts of nicotinic acid.
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公开(公告)号：MY136884A
公开(公告)日：2008-11-28
申请号：MYPI20032640
申请日：2003-07-15
Applicant: BASF AG
Inventor： DIEHL VOLKER DR , JAGER ULRICH DR , SCHRODER JURGEN DR , THIEL JOACHIM DR
Abstract: A PROCESS FOR CLEANING APPARATUS IN WHICH (METH)ACRYLIC ACID-CONTAINING ORGANIC SOLVENTS HAVE BEEN TREATED AND/ OR @GENERATED AND CONTAIN FOULING AND/OR POLYMER AND RESIDUES OF ORGANIC SOLVENT, IN WHICH THE APPARATUS CONTENTS ARE SUBJECTED TO @A STEAM DISTILLATION IN THE APPARATUS.
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公开(公告)号：DE4436243A1
公开(公告)日：1996-04-18
申请号：DE4436243
申请日：1994-10-11
Applicant: BASF AG
Inventor： EGLY HORST , DIEHL VOLKER DR , JOERG KLAUS DR
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公开(公告)号：CZ9502630A3
公开(公告)日：1996-04-17
申请号：CZ263095
申请日：1995-10-09
Applicant: BASF AG
Inventor： EGLY HORST , DIEHL VOLKER DR , JORG KLAUS DR
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公开(公告)号：MY147742A
公开(公告)日：2013-01-15
申请号：MYPI20083643
申请日：2004-04-14
Applicant: BASF AG
Inventor： DIEHL VOLKER DR , JAEGER ULRICH DR , HAMMON ULRICH DR , SCHROEDER JUERGEN DR , RISSEL STEFFEN
Abstract: A SEPARATING COLUMN CONTAINING A SEQUENCE OF MASS TRANSFER TRAYS THAT ARE SUPPORTED BY AT LEAST ONE COVERED DOUBLE-T SUPPORT (1) AND/OR COVERED U-SHAPED SUPPORT.
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