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31.发明专利
公开(公告)号：CZ16096A3
公开(公告)日：1996-08-14
申请号：CZ16096
申请日：1996-01-18
Applicant: BASF AG
Inventor： HERBST HOLGER DR , NESTLER GERHARD DR , HAMMON ULRICH DR
Abstract: In the sepn. of (meth)acrylic acid (I) from mixts. by rectification, in which (I) is discharged from the column at a point higher than the inlet for the mixt., the refluxing liq. is removed in at least one position of the column, the oligomerised and/or polymerised (I) is sepd. and the liq. is recycled to the column.
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32.发明专利
公开(公告)号：DE4414773A1
公开(公告)日：1994-11-24
申请号：DE4414773
申请日：1994-04-27
Applicant: BASF AG
Inventor： HERBST HOLGER DR , HICKMANN ECKARD DR , HUEBINGER WOLFGANG DR , JAEGER ULRICH DR , KROPP RUDOLF , REICH WOLFGANG DR , HARTH KLAUS DR
IPC: B01J19/02 , C07B63/04 , C07C51/50 , C07C57/07 , C07C57/075 , C07C67/62 , C08F2/38 , C08F2/40 , C23C14/06 , C07C69/54 , C07C57/04
Abstract: Processes for stabilising vinylic monomers against uncontrolled polymerisation during preparation, transport and storage by addition of a polymerisation inhibitor are characterised in that the polymerisation inhibitor used is a fullerene, reaction products of a fullerene with a dienophile, or a mixture of fullerenes and/or reaction products of fullerenes with dienophiles, nucleophiles or halogens; surfaces, in particular metal surfaces, can be coated with the fullerene products, in particular by vapour deposition.
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公开(公告)号：MY123466A
公开(公告)日：2006-05-31
申请号：MYPI9904854
申请日：1999-11-09
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , HERBST HOLGER DR , NESTLER GERHARD DR , SCHRODER JURGEN DR , BECKMANN STEFAN DR
IPC: C07C29/20 , C07C67/08 , C07C67/327 , C07C67/60 , C07C69/54
Abstract: IN A PROCESS FOR ESTERIFYING (METH) ACRYLIC ACID WITH AN ALKANOL IN THE PRESENCE OF AN ESTERIFICATION CATALYST, IN WHICH UNCONVERTED STARTING COMPOUNDS AND (METH) ACRYLIC ESTER TO BE FORMED ARE SEPARATED OFF BY DISTILLATION AND AN OXYESTER-CONTAINING BOTTOM PRODUCT IS FORMED, THE BOTTOM PRODUCT IS FIRST SEPARATED OFF AND THEN THE OXYESTERS CONTAINED IN IT ARE CLEAVED IN THE PRESENCE OF A RELATIVELY LONG-CHAIN ALKYLBENZENESULFONIC ACID AT ELEVATED TEMPERATURES.
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公开(公告)号：DE19735223A1
公开(公告)日：1999-02-18
申请号：DE19735223
申请日：1997-08-15
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , HERBST HOLGER DR , NESTLER GERHARD DR
Abstract: A process for the stabilisation of esters of (meth)acrylic acid as a pure substance or as a component within a mixture that does not contain a Bronsted acid having a Bronsted acid strength greater than that of acrylic acid is claimed by addition of a p-phenylene diamine containing polymerisation inhibitor as a pure substance or mixture of inhibitors that contains (A) a nitroxyl radical and/or an organic compound containing a nitroso group and (B) a p-phenylene diamine.
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公开(公告)号：DE19734171A1
公开(公告)日：1999-02-11
申请号：DE19734171
申请日：1997-08-07
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , HERBST HOLGER DR , NESTLER GERHARD DR
IPC: C07C67/62 , C09K15/18 , C09K15/30 , C07C69/54 , C07D211/94
Abstract: A process for the stabilisation as a pure substance or a component of a mixture that does not contain a Bronsted acid having a Bronsted acid strength greater than that of acrylic acid, of esters of (meth)acrylic acid against unwanted radical polymerisation is claimed by the addition of a p-phenylene diamine containing polymerisation inhibitor. The pure substance or mixture of polymerisation inhibitors contains (A) at least a nitroxy radical and/or at least an organic compound that contains at least a nitroso group; and (B) at least a p-phenylenediamine.
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Patent Agency Ranking
公开(公告)号：DE59600212D1
公开(公告)日：1998-07-02
申请号：DE59600212
申请日：1996-01-13
Applicant: BASF AG
Inventor： HERBST HOLGER DR , HAMMON ULRICH DR
Abstract: In the sepn. of (meth)acrylic acid (I) from mixts. contg. (I) as main prod. and lower aldehydes as by-prods. by rectification in a column with a distn. zone and a concn. zone, the mixt. is not supplied to the column directly. Instead, it is passed to a heated dwell vessel connected to the concn. zone, in which the mixt. is kept boiling, and the sump liquid from this vessel is fed to the column.
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公开(公告)号：ES2115838T3
公开(公告)日：1998-07-01
申请号：ES94115717
申请日：1994-10-06
Applicant: BASF AG
Inventor： DOCKNER TONI DR , NESTLER GERHARD DR , HERBST HOLGER DR , LERMER HELMUT DR , MARTAN HANS DR , VOGEL HERBERT DR
IPC: C07C57/04 , C07C51/487 , C07C57/055 , C07C57/07 , C07C57/075
Abstract: A process for the purification of crude (meth)acrylic acid in which the crude (meth)acrylic acid is worked up by distillation after addition of a primary amine compound and of an organic sulphonic acid.
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公开(公告)号：DE59502240D1
公开(公告)日：1998-06-25
申请号：DE59502240
申请日：1995-11-14
Applicant: BASF AG
Inventor： HERBST HOLGER DR , NESTLER GERHARD DR , DARLINGTON JERRY , MARTAN HANS DR
IPC: C07C57/075 , C07C51/44 , C07C57/055 , C07C57/07 , C07C57/04 , C07C51/50 , C07C51/487
Abstract: In a process for purifying crude (meth)acrylic acid, the crude (meth)acrylic acid is worked up by distillation after addition of an organic carboxylic acid hydrazide and, if desired, an organic sulfonic acid.
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公开(公告)号：DE59405832D1
公开(公告)日：1998-06-04
申请号：DE59405832
申请日：1994-10-06
Applicant: BASF AG
Inventor： DOCKNER TONI DR , NESTLER GERHARD DR , HERBST HOLGER DR , LERMER HELMUT DR , MARTAN HANS DR , VOGEL HERBERT DR , EXNER HERBERT DR
IPC: C07C57/04 , C07C51/487 , C07C57/055 , C07C57/07 , C07C57/075
Abstract: A process for the purification of crude (meth)acrylic acid in which the crude (meth)acrylic acid is worked up by distillation after addition of a primary amine compound and of an organic sulphonic acid.
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公开(公告)号：CZ9700309A3
公开(公告)日：1997-10-15
申请号：CZ30997
申请日：1997-02-03
Applicant: BASF AG
Inventor： SCHMIDT WILLI , MATTHIAS GEISENDORFER DR , DOCKNER TONI DR , HERBST HOLGER DR , NESTLER GERHARD DR
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