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公开(公告)号：ES2042955T3
公开(公告)日：1993-12-16
申请号：ES89123421
申请日：1989-12-19
Applicant: BASF AG
Inventor： DUEMBGEN GERD DR , HAMMON ULRICH DR , KRABETZ RICHARD DR , SCHWARZMANN MATTHIAS DR , THIESSEN FRITZ DR , VOGEL HERBERT DR
IPC: C07C51/25 , C07C57/04 , C07C57/055
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公开(公告)号：DE2338111A1
公开(公告)日：1975-02-20
申请号：DE2338111
申请日：1973-07-27
Applicant: BASF AG
Inventor： DUEMBGEN GERD DR , ENGELBACH HEINZ DR , KRABETZ RICHARD DR , LEBERT ULRICH DR , RUCKH PETER DR , THIESSEN FRITZ DR , WILLERSINN CARL-HEINZ DR
IPC: B01J23/88 , B01J23/887 , B01J23/888 , B01J23/89 , B01J27/186 , B01J27/192 , B01J27/195 , C07C45/34 , C07C45/35 , C07C47/20 , C07C47/22 , C07C121/30
Abstract: Catalytic oxidn. or ammonoxidation of alpha-olefins to the corresp. alpha, beta-unsatd. aldehydes or nitriles in the vapour phase at 280-450 degrees C, opt. in the presence of steamd and/or NH3 using oxygen and inert gas in the presence of a catalyst of formula:also contains ZnO oxide, pref. as Znh in the above formula where Me1 is In, La, Ga, Al or a mixt. of these; Me2 is Fe and/or Cu; Me3 is Ni and/or Co; Me4 is >=1 of P, B, As, Cr, V and W; Me5 is >=1 of Ta, Sm, Nb, Ag, Pb, Mn, Re, Sn, Ge, Mg, Ca and Ba; a is 0.1-6, pref. 0.5-3; b is 0.005-3, pref. 0.01-1; c is 0.1-8, pref. 0.5-3; d is 0-16, pref. 2-8; e is 0-6 pref. 0.1-3; g is 36-102, pref. 38-95; h is pref. 0.5-6, partic. 2-4; d+h is pref. 4-12, partic, 6-10. The ZnO gives increased selectively.
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公开(公告)号：DE19530291A1
公开(公告)日：1997-02-20
申请号：DE19530291
申请日：1995-08-17
Applicant: BASF AG
Inventor： ALTINGER GERHARD , EGLY HORST , KAISER RUDOLF , THIESSEN FRITZ DR
Abstract: Column plates for a material exchange column, esp. with a peripheral supporting ring and supporting elements holding plates with through-holes, esp. perforations, valves or bubble caps comprise: (1) a liquid-tight join, pref. weld, esp. in discrete areas, between (a) the plates and the supporting elements and/or ring, (b) the supporting elements and (c) the supporting elements and the wall of the column or supporting ring; and (2) adjacent plates and supporting elements are sepd. from one another and from the column wall or supporting ring by gaps with a width of 1-15, pref. 1-7 mm. Also claimed are material exchange columns with plates of this type and a method of producing the plates.
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公开(公告)号：ES2094940T3
公开(公告)日：1997-02-01
申请号：ES93100118
申请日：1993-01-07
Applicant: BASF AG
Inventor： DUEMBGEN GERD DR , FIEDLER ECKHARD DR , HAMMON ULRICH DR , THIESSEN FRITZ DR , VOGEL HERBERT DR
IPC: C07C51/44 , C07C51/487 , C07C51/50 , C07C57/04 , C07C57/055 , C07C57/07
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公开(公告)号：DE3868360D1
公开(公告)日：1992-03-26
申请号：DE3868360
申请日：1988-06-24
Applicant: BASF AG
Inventor： KRABETZ RICHARD DR , DUEMBGEN GERD DR , MERGER FRANZ DR , JAEGER MICHAEL , THIESSEN FRITZ DR , VOGEL HERBERT DR
IPC: B01J27/19 , C07B63/04 , C07C51/00 , C07C51/235 , C07C51/25 , C07C57/05 , C07C57/055 , C07C57/07 , C07C67/00
Abstract: Prodn. of methacrylic acid (I) by gas phase oxidn. of methacrolein (IIA) or isobutyraldehyde (IIB) with gas mixts. contg. O2 and steam is carried out on catalysts (III) contg. Mo and P at 250-400 deg.C. The hot reaction gas is cooled to under 100 deg.C and passed to an absorption column operating with water below 100 deg.C for absorption of the (I) formed, then partly recycled to the reactor after adding the reqd. amt. of (II) and O2. The novel features are that: (a) (II) in an amt. equal to the amt. consumed is added in liq. form to the reaction gas in the lower two-thirds of the absorption column, in conjunction with polymerisation inhibitors (IV); and (b) a side stream of the reactor gas is taken before addn. of (II) or after the absorption column, and scrubbed in a scrubbing column operating with water at 0 to under 10 deg.C to remove unreacted (II) and this is passed to the top of the absorption column as aq. soln.
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Patent Agency Ranking
公开(公告)号：DE3721865A1
公开(公告)日：1989-01-12
申请号：DE3721865
申请日：1987-07-02
Applicant: BASF AG
Inventor： KRABETZ RICHARD DR , DUEMBGEN GERD DR , MERGER FRANZ DR , JAEGER MICHAEL , THIESSEN FRITZ DR , VOGEL HERBERT DR
IPC: B01J27/19 , C07B63/04 , C07C51/00 , C07C51/235 , C07C51/25 , C07C57/05 , C07C57/055 , C07C57/07 , C07C67/00
Abstract: Methacrylic acid can be prepared with advantage by gas phase oxidation of methacrolein or isobutyraldehyde over Mo- and P-containing catalysts at from 250 DEG to 400 DEG C. with cooling of the hot reaction gas to below 100 DEG C., absorption of the methacrylic acid in a water-operated absorption column, at below 100 DEG C. and partial recycling into the oxidation reactor after admixture of methacrolein or isobutyraldehyde and oxygen by feeding a quantity of methacrolein or isobutyraldehyde equal to the quantity of methacrolein or isobutyraldehyde consumed in the reaction in liquid form together with a polymerization inhibitor into the reactor gas in the lower two-thirds of the absorber column and upstream of the feed point for the fresh methacrolein or isobutyraldehyde or down-stream of the absorption column splitting off the reactor off-gas a side stream which is washed in a wash column operated with water at
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公开(公告)号：DE3517016A1
公开(公告)日：1986-11-13
申请号：DE3517016
申请日：1985-05-11
Applicant: BASF AG
Inventor： DUEMBGEN GERD DR , KRABETZ RICHARD DR , MERGER FRANZ DR , SCHWARZMANN MATTHIAS DR , THIESSEN FRITZ DR , VOGEL HERBERT DR
IPC: B01J27/198 , B01J27/199 , C07B61/00 , C07C51/00 , C07C51/235 , C07C51/25 , C07C57/055 , C07C67/00 , B01J23/76 , B01J35/02
Abstract: Oxidation catalyst of the general formula Mo12PaVbCscCudWeRhfBgXhYiZk Ox, in which X is K, Rb, Tl, Na, Li, Ca, Sr, Ba, Ag and/or Mg, Y is Nb, Ni, Co, Mn, Cr and/or Fe, Z is As and/or Sb, a is between 0.5 and 3, b is between 0.1 and 4, c is between 0.1 and 3, d is between 0.01 and 1.5, e is between 0.005 and 1.0, f is between 0 and 0.3, g and h are between 0 and 1, i is between 0 and 2 and k is between 0 and 0.3, with the proviso, that [c+ 2 . d + h . wx + i . wy - 3 . (a + g + k - 1)]: 12
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公开(公告)号：DE2249922A1
公开(公告)日：1974-04-25
申请号：DE2249922
申请日：1972-10-12
Applicant: BASF AG
Inventor： KRABETZ RICHARD DR , ENGELBACH HEINZ DR , LEBERT ULRICH DR , FREY WALTER DR , DUEMBGEN GERD DR , THIESSEN FRITZ DR , WILLERSINN CARL-HEINZ DR
IPC: C07C47/22 , B01J21/00 , B01J23/00 , B01J23/28 , B01J23/31 , B01J23/88 , B01J23/887 , B01J23/888 , C07B61/00 , C07C45/00 , C07C45/34 , C07C45/35 , C07C51/25 , C07C67/00 , C07C255/08 , C07C27/14 , C07C57/04 , C07C121/30
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公开(公告)号：DE19727234C1
公开(公告)日：1999-07-15
申请号：DE19727234
申请日：1997-06-26
Applicant: BASF AG
Inventor： HENNIG GUNNAR DR , SCHRAUT ARMIN DR , MARTIN FRIEDRICH-GEORG DR , ULBRICH MICHAEL-DIETER DR , BAUR KARL GERHARD DR , THIESSEN FRITZ DR
Abstract: The invention relates to a method for producing alkyl(meth)acrylate by continuous reaction of an aqueous solution containing (meth)acrylic acid obtained directly from gas-phase oxidation by reacting with a straight-chain or branched alkanol with 1 to 6 C atoms or a mixture of two or more thereof in the presence of an esterification catalyst. The inventive method is characterized in that alkanol is introduced into aqueous solution containing (meth)acrylic acid in the form of a gas.
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公开(公告)号：CZ235396A3
公开(公告)日：1997-05-14
申请号：CZ235396
申请日：1996-08-09
Applicant: BASF AG
Inventor： ALTINGER GERHARD , EGLY HORST , THIESSEN FRITZ DR , KAISER RUDOLF
Abstract: Column plates for a material exchange column, esp. with a peripheral supporting ring and supporting elements holding plates with through-holes, esp. perforations, valves or bubble caps comprise: (1) a liquid-tight join, pref. weld, esp. in discrete areas, between (a) the plates and the supporting elements and/or ring, (b) the supporting elements and (c) the supporting elements and the wall of the column or supporting ring; and (2) adjacent plates and supporting elements are sepd. from one another and from the column wall or supporting ring by gaps with a width of 1-15, pref. 1-7 mm. Also claimed are material exchange columns with plates of this type and a method of producing the plates.
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