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公开(公告)号：DE59005224D1
公开(公告)日：1994-05-11
申请号：DE59005224
申请日：1990-01-20
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：CZ9000304A3
公开(公告)日：1998-05-13
申请号：CS30490
申请日：1990-01-22
Applicant: BASF AG
Inventor： KAIBEL GERD DR ING , SCHLOEMER KARL DR , MAYER HANS HORST
CPC classification number: C07C45/82 , B01D3/146 , C07C29/80 , C07C2601/14 , Y10S203/09 , Y10S203/20 , C07C35/08 , C07C49/403
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公开(公告)号：CZ30490A3
公开(公告)日：1998-05-13
申请号：CS30490
申请日：1990-01-22
Applicant: BASF AG
Inventor： KAIBEL GERD DR ING , SCHLOEMER KARL DR , MAYER HANS HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：CZ284069B6
公开(公告)日：1998-08-12
申请号：CS30490
申请日：1990-01-22
Applicant: BASF AG
Inventor： KAIBEL GERD DR ING , SCHLOEMER KARL DR , MAYER HANS HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：CH454823A
公开(公告)日：1968-04-30
申请号：CH1051465
申请日：1965-07-27
Applicant: BASF AG
Inventor： KROEPER HUGO DR , WEITZ HANS-MARTIN DR , PLATZ ROLF DR , SCHLOEMER KARL DR
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Patent Agency Ranking
公开(公告)号：ES2062115T3
公开(公告)日：1994-12-16
申请号：ES90101132
申请日：1990-01-20
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：DE3902006A1
公开(公告)日：1990-07-26
申请号：DE3902006
申请日：1989-01-25
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：DE1953490A1
公开(公告)日：1971-05-06
申请号：DE1953490
申请日：1969-10-24
Applicant: BASF AG
Inventor： SCHLOEMER KARL DR
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公开(公告)号：DE1953489A1
公开(公告)日：1971-05-06
申请号：DE1953489
申请日：1969-10-24
Applicant: BASF AG
Inventor： SCHLOEMER KARL DR
IPC: C07C2/26
Abstract: Olefine or mixture of 2 more olefines is dimerised at 60-200 degrees C and 1-300 atm. pressure in presence of Na metal, K salt and an organic cpd. containing one or more carbonyl groups optionally in a solvent. Process is particularly useful for propylene dimerisation to form hexene mixtures containing up to 85% 4-methylpentene-1, useful as fuel additive for raising octane no. and as monomer for production of high-melting isotactic film- and fibre-forming polymers.
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公开(公告)号：AT257562B
公开(公告)日：1967-10-10
申请号：AT746065
申请日：1965-08-12
Applicant: BASF AG
Inventor： KROEPER HUGO DR , WEITZ HANS-MARTIN DR , PLATZ ROLF DR , SCHLOEMER KARL DR
Abstract: Tertiary alkyl acrylates or methacrylates of the formula wherein R1 denotes an H atom or the -CH3 group and the R2 radicals which may be the same or different denote an alkyl group having from 1 to 4 C atoms, are prepared by reacting acrylic or methacrylic acid with a tertiary olefin of formula where R2 has the above meaning and R3 denotes an alkylidene group with 1 to 4 C atoms, in the presence of an active bleaching earth containing from 0.005 to 0.1 milliequivalents per gram of free titratable acid at atmospheric or superatmospheric pressure and at a temperature of from 0 DEG C. to 40 DEG C. A suitable bleaching earth comprises 50 to 70% of SiO2, 10 to 30% of Al2O3, 2 to 8% of Fe2O3, 1 to 9% of MgO and small amounts of the oxides of the other alkaline earth metals (all percentages are by weight). Examples describe the production of tertiary-butyl acrylate.
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