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1.发明专利
公开(公告)号：DE3061677D1
公开(公告)日：1983-02-24
申请号：DE3061677
申请日：1980-07-01
Applicant: BASF AG
Inventor： VOLKAMER KLAUS DR , LINDNER ALFRED DR , MERGER FRANZ DR , WAGNER ULRICH DR , BRUNNER ERWIN DR , SANDROCK GERHARD DR , STROHMEYER MAX DR
Abstract: A process for conjointly preparing methyl tert.-butyl ether and obtaining isobutene from an isobutene-containing C4-hydrocarbon mixture. In the process the C4-hydrocarbon mixture is reacted, in one or more etherification stages, with methanol and a primary C3- or C4-alcohol in the presence of an acid condensing agent, the resulting reaction mixture or mixtures are then separated into a fraction containing the unconverted hydrocarbons, the methyl tert.-butyl ether and a fraction containing the C3- or C4-alkyl tert.-butyl ether. Thereafter, the C3- or C4-alkyl tert.-butyl ether is decomposed at an elevated temperature, in the presence of an acid catalyst, into isobutene and primary C3- or C4-alcohol.
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公开(公告)号：DE2460784C2
公开(公告)日：1976-12-16
申请号：DE2460784
申请日：1974-12-21
Applicant: BASF AG
Inventor： HAGEN WERNER DR , HOHENSCHUTZ HEINZ DR , STROHMEYER MAX DR
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公开(公告)号：DE2407157A1
公开(公告)日：1975-09-11
申请号：DE2407157
申请日：1974-02-15
Applicant: BASF AG
Inventor： HOHENSCHUTZ HEINZ DR , STROHMEYER MAX DR , RAUCH KONRAD DR , HESSE DIETER DIPL ING , KIEFER HANS DR
Abstract: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.
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公开(公告)号：AT247305B
公开(公告)日：1966-06-10
申请号：AT666964
申请日：1964-08-03
Applicant: BASF AG
Inventor： STROHMEYER MAX DR , SCHOLZ HEINRICH DR
IPC: C07C233/09
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公开(公告)号：DE59302486D1
公开(公告)日：1996-06-13
申请号：DE59302486
申请日：1993-02-13
Applicant: BASF AG
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Patent Agency Ranking
公开(公告)号：DE3625261A1
公开(公告)日：1988-02-04
申请号：DE3625261
申请日：1986-07-25
Applicant: BASF AG
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公开(公告)号：DE2237373A1
公开(公告)日：1974-02-14
申请号：DE2237373
申请日：1972-07-29
Applicant: BASF AG
Inventor： KUMMER RUDOLF DR , NIENBURG HANS-JUERGEN DR , HOHENSCHUTZ HEINZ DR , STROHMEYER MAX DR , TEUTSCH THEO DR
Abstract: An improvement in the process for the manufacture of predominantly straight-chain aldehydes by hydroformylation of olefinically unsaturated compounds of 2 to 20 carbon atoms with carbon monoxide and hydrogen in which, in a first stage, aqueous cobalt solutions are treated with carbon monoxide and hydrogen at temperatures of 50 DEG to 200 DEG C and pressures of 100 to 400 atmospheres in the presence of active charcoal, zeolites or basic ion exchangers which are charged with cobalt carbonyl, in a second stage cobalt carbonyl-hydride is extracted from the reaction mixtures thus obtained, at temperatures of 20 DEG to 180 DEG C and pressures of 1 to 400 atmospheres, by means of olefinically unsaturated compounds which must be water-insoluble and liquid under the conditions used, the aqueous phase is separated off and the organic phase is transferred to a third stage and in this stage, after introducing olefinically unsaturated compounds if the latter have only been used partially for the extraction, the hydroformylation is carried out at temperatures of 70 DEG to 170 DEG C and pressures of 100 to 400 atmospheres, the improvement being that the extraction in the second stage is carried out as a co-current extraction whilst maintaining turbulent flow.
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公开(公告)号：DE1643629A1
公开(公告)日：1971-07-01
申请号：DE1643629
申请日：1967-07-19
Applicant: BASF AG
Inventor： STROHMEYER MAX DR
Abstract: 1,223,283. Cymenes. BADISCHE ANILIN- & SODA-FABRIK A.G. 18 July, 1968 [19 July, 1967], No. 34182/68. Heading C5E. Cymenes are prepared by reacting one or more methyldiisopropylbenzenes in a trans-alkylation stage with toluene in the presence of AlCl 3 and HCl, and reacting the resultant mixture, together with toluene, in an alkylation stage with propylene, the molar ratio of total benzene groups to total propylene groups being maintained between 1: 0À75 and 1: 0À95 in the transalkylation stage and between 1: 0À2 and 1: 0À8 in the alkylation stage. The reaction mixture from the transalkylation may be isomerized, with or without the addition of recycled undesired cymene isomers, in an isomerization stage before the alkylation stage. The transalkylation and isomerization may be carried out at 20- 75‹ C. and the alkylation at 20-110‹ C.. The starting material may be 1,2,4- and/or 1,3,5- methyldiisopropylbenzene. In an example for the production of p-cymene the final reaction product is distilled and toluene, undesired cymenes, methyldiisopropylbenzenes, xylenes and dimethylisopropylbenzenes are recycled.
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公开(公告)号：DE3773780D1
公开(公告)日：1991-11-21
申请号：DE3773780
申请日：1987-07-14
Applicant: BASF AG
Inventor： ZEHNER PETER DR , HOFFMANN HERWIG DR , RICHTER WOLFGANG DR , STUETZER DIETER DR , STROHMEYER MAX DR , WALZ HELMUT DR , WEIPPERT ERICH DR
Abstract: The olefin is introduced into the bottom zone of the hydroformylation reactor contg. a liq. reaction zone making up 60-85% of the reactor vol., at 1-40 bar and 50-140 deg. C, using Rh complex cpds. as catalysts. The gaseous reaction prods. and reaction partners are removed from the hydroformylation reactor. The reaction prods. are sepd. and most of the remaining gas is returned to the reactor as recycle gas. The novelty consists in charging 20-80 vol.% of the recycle gas to the hydroformylation reactor above the liq. reaction zone and/or below the liq. surface in the top quarter of the liq. reaction zone.
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公开(公告)号：AT63535T
公开(公告)日：1991-06-15
申请号：AT85109124
申请日：1985-07-22
Applicant: BASF AG
Inventor： LINDNER ALFRED DR , MROSS WOLF DIETER DR , STROHMEYER MAX DR , VOLKAMER KLAUS DR
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