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公开(公告)号：CH618153A5
公开(公告)日：1980-07-15
申请号：CH217975
申请日：1975-02-21
Applicant: BASF AG
IPC: B01J27/00 , B01J31/00 , C07B61/00 , C07C1/00 , C07C2/86 , C07C15/16 , C07C17/00 , C07C17/26 , C07C25/18 , C07C67/00
Abstract: 1488185 o-Benzyl toluenes BASF AG 21 Feb 1975 [22 Feb 1974 11 June 1974 18 June 1974 30 Nov 1974] 7303/75 Heading C5E [Also in Division C2] 2-Benzyltoluenes of the formula in which R 1 are independently H or halogen, R 2 are H, halogen, aliphatic or aromatic, are prepared by reaction of an o-xylyl halide (II) in which X is a halogen with an aromatic compound (III) either (a) in the presence of H 2 SO 4 using less than 7 moles of III per mole of II, or (b) in the presence of (1) a phosphoric acid and (2) an organic sulphonic acid, a zinc compound and/or a tin compound, or (c) in the presence of (1) H 2 SO 4 and (2) a phosphoric acid, an organic sulphonic acid, a boron compound, a zinc compound and/ or a tin compound examples describe the preparation of o-benzyl toluene; 2,3 1 ,4 1 -trimethyl diphenylmethane; 2,2 1 ,5 1 -trimethyl diphenylmethane; 2,4 1 -dimethyldiphenylmethane; and, 2-(methylbenzyl) -toluene.
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公开(公告)号：DE3346719A1
公开(公告)日：1985-07-04
申请号：DE3346719
申请日：1983-12-23
Applicant: BASF AG
Inventor： DRESSEL MANFRED , EBERLE HEINRICH , RIPPERGER WILLI DR , RUEHENBECK WOLFGANG DR , ZWICK WERNER
Abstract: In the preparation of ammonium carbamate by reacting ammonia with carbon dioxide, the reactants are introduced into a layer of ammonium carbamate which is kept in the fluidized state by gaseous ammonia or carbon dioxide. The temperature is kept below 25 DEG C. by removing the heat of reaction.
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公开(公告)号：DE2428197A1
公开(公告)日：1976-01-08
申请号：DE2428197
申请日：1974-06-11
Applicant: BASF AG
Abstract: Prepn. of o-benzyltoluenes (I) by condens. of (II) with (III) (where R1, same or different, is H or halogen; R2 is as R1 or an aliphatic or aromatic radical) in the presence of H2SO4 or a mixt. of H3PO4 and an org. sulphonic acid RSO3H, opt. with cpds. contg. Zn, Sn, or B. Method is less hazardous, gives good yields without need if complicated catalysts, and shows consistent results. Cpds. (I) are inters. e.g. for dyestuffs.
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公开(公告)号：DE3835527A1
公开(公告)日：1990-05-03
申请号：DE3835527
申请日：1988-10-19
Applicant: BASF AG
Inventor： STUMPP MICHAEL DR , NEUMANN PETER DR , RUEHENBECK WOLFGANG DR , BERGNER MICHAEL
IPC: B01J27/02 , C07B61/00 , C07C315/00 , C07C315/06 , C07C317/22
Abstract: Process for the preparation of bis(4-hydroxyphenyl) sulphone by reaction of phenol with sulphuric acid in the presence of a solvent at a temperature of 130 to 220 DEG C and, where appropriate, in the presence of a sulphonation auxiliary, the bis(4-hydroxyphenyl) sulphone which is formed being deposited during or after the reaction selectively on a nucleus-forming surface, and being removed from the reaction medium.
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公开(公告)号：DE3415140A1
公开(公告)日：1985-10-31
申请号：DE3415140
申请日：1984-04-21
Applicant: BASF AG
Inventor： DRESSEL MANFRED , EBERLE HEINRICH , RIPPERGER WILLI DR , RUEHENBECK WOLFGANG DR , ZWICK WERNER
IPC: C01C1/26
Abstract: Ammonium bicarbonate is produced by reacting the reaction components ammonia, water and carbon dioxide in a fluidised bed of ammonium bicarbonate. The temperature in the fluidised bed is kept below 35 DEG C by removing heat.
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Patent Agency Ranking
公开(公告)号：DE3342827A1
公开(公告)日：1984-05-30
申请号：DE3342827
申请日：1983-11-26
Applicant: BASF AG
Inventor： SCHLINDWEIN HEINZ , RUEHENBECK WOLFGANG DR
IPC: G01F23/22
Abstract: Guided via a thermally conductive element (2) into the interior or from the interior of a vessel (1) at the point or points where the level of a liquid or bulk material is to be observed is a heat flow which is thermal contact with the container interior, on the one hand, and with a source of heat or cold (4) on the other hand. The change in the heat flow when the liquid or bulk material comes into contact with the element is detected by measuring the temperature of the element in the region of contact with the aid of a thermometer (5, 6) in order to signal the level.
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公开(公告)号：DE2456747A1
公开(公告)日：1976-06-10
申请号：DE2456747
申请日：1974-11-30
Applicant: BASF AG
Abstract: Prepn. of o-benzyltoluenes (I) by condens. of (II) with (III) (where R1, same or different, is H or halogen; R2 is as R1 or an aliphatic or aromatic radical) in the presence of H2SO4 or a mixt. of H3PO4 and an org. sulphonic acid RSO3H, opt. with cpds. contg. Zn, Sn, or B. Method is less hazardous, gives good yields without need if complicated catalysts, and shows consistent results. Cpds. (I) are inters. e.g. for dyestuffs.
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公开(公告)号：DE3371294D1
公开(公告)日：1987-06-11
申请号：DE3371294
申请日：1983-12-20
Applicant: BASF AG
Inventor： RUEHENBECK WOLFGANG DR
Abstract: A fixed-bed charge in a tube reactor is heated, and at the same time heat is conducted away from, or into, the fixed bed, by a method in which the fixed bed is heated by means of a fluidized material which conducts away and supplies heat and flows through the voids in the charge, and the heat is conducted away or supplied by means of a heat-transfer medium flowing in a heat exchanger, the latter being located in the fixed bed or in a fluidized layer formed above the fixed bed and consisting of the fluidized material.
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公开(公告)号：DE3248502A1
公开(公告)日：1984-07-05
申请号：DE3248502
申请日：1982-12-29
Applicant: BASF AG
Inventor： RUEHENBECK WOLFGANG DR
Abstract: A fixed-bed charge in a tube reactor is heated, and at the same time heat is conducted away from, or into, the fixed bed, by a method in which the fixed bed is heated by means of a fluidized material which conducts away and supplies heat and flows through the voids in the charge, and the heat is conducted away or supplied by means of a heat-transfer medium flowing in a heat exchanger, the latter being located in the fixed bed or in a fluidized layer formed above the fixed bed and consisting of the fluidized material.
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