公开(公告)号：DE2612355A1

公开(公告)日：1977-10-06

申请号：DE2612355

申请日：1976-03-24

Applicant: BASF AG

Inventor： BIPP HANSJOERG DIPL CHEM DR ,  HORNBERGER PAUL DIPL CHEM DR ,  KRATZER OTTO DIPL CHEM DR

IPC: C07C67/48 ,  C07C69/44 ,  C07C69/80 ,  C07C69/82

Abstract: A Sn, Ti or Zr catalyst used in the esterification of phthalic anhydride or adipic acid with 6-13C alcohols is removed by (1) treatment of the crude ester with aq. alkali at is not >100 degrees C and (2) decanting the aq. hydrolysed catalyst contg. phase. In (I) the neutral or weakly acidic crude ester is treated for >=3 mins. with 5-20 pt. wt. per 100 pt. wt. crude ester of a 0.1-5 wt.% aq. alkali soln. so that an emulsion is formed. The size of the drops in the organic phase is 0.5-10 (0.5-3) mm. Esters of purity >99% are obtd. They are used as plasticisers.

公开(公告)号：DE2546268A1

公开(公告)日：1977-04-21

申请号：DE2546268

申请日：1975-10-16

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  REUTER PETER DIPL CHEM DR ,  WIRTH FRIEDRICH DIPL CHEM DR ,  HORNBERGER PAUL DIPL CHEM DR

IPC: C07D307/89 ,  B01J23/00 ,  B01J27/00 ,  C07C51/265 ,  C07C51/31

Abstract: A process for the manufacture of phthalic anhydride by oxidizing o-xylene and/or naphthalene over a supported catalyst containing vanadium pentoxide and titanium dioxide, at from 350 DEG to 500 DEG C, in which the o-xylene or naphthalene is passed, with an oxygen-containing carrier gas, over the catalyst, and in which the catalyst in the first 25-50 per cent by volume of the total catalyst volume, in the direction of flow of the mixture of o-xylene or naphthalene and carrier gas, contains from 0.01 to 0.3 per cent by weight, based on titanium dioxide, of rubidium, but no phosphorus, in the active composition, while the remainder of the catalyst contains from 0.02 to 0.8 per cent by weight, based on titanium dioxide, of phosphorus, but no rubidium, in the active composition.

公开(公告)号：DE2444824A1

公开(公告)日：1976-04-08

申请号：DE2444824

申请日：1974-09-19

Applicant: BASF AG

Inventor： KUBE WOLFGANG DIPL ING ,  HORNBERGER PAUL DIPL CHEM DR ,  REUTER PETER DIPL CHEM DR ,  LEMAN OTTO DIPL ING

IPC: C07D307/60 ,  B01J10/00 ,  C07C51/573 ,  C07D307/32

公开(公告)号：DE2330841A1

公开(公告)日：1975-01-16

申请号：DE2330841

申请日：1973-06-16

Applicant: BASF AG

Inventor： HORNBERGER PAUL DIPL CHEM DR ,  REUTER PETER DIPL CHEM DR ,  HOHENSCHUTZ HEINZ DIPL CHEM DR

IPC: C07D307/60 ,  B01J23/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/21 ,  C07C51/265 ,  C07C51/31 ,  C07C51/54 ,  C07C67/00 ,  C07C51/20 ,  C07C57/04 ,  C07C57/14 ,  C07D307/89

公开(公告)号：DE2313306A1

公开(公告)日：1974-09-26

申请号：DE2313306

申请日：1973-03-17

Applicant: BASF AG

Inventor： LEMAN OTTO DIPL ING ,  KUBE WOLFGANG DIPL ING ,  KARAU DIETER DIPL ING ,  WAGNER JOACHIM DIPL ING ,  WIRTH FRIEDRICH DIPL CHEM DR ,  HORNBERGER PAUL DIPL CHEM DR

IPC: B01D3/00 ,  C07C51/573 ,  C07D307/89 ,  C07C63/18

公开(公告)号：DE2732853A1

公开(公告)日：1979-02-08

申请号：DE2732853

申请日：1977-07-21

Applicant: BASF AG

Inventor： HORNBERGER PAUL DIPL CHEM DR ,  ENKE WALTER ING GRAD ,  BIPP HANSJOERG DIPL CHEM DR ,  KRATZER OTTO DIPL CHEM DR

IPC: C07C67/08 ,  C07C69/80

Abstract: Complete esterification of dicarboxylic acids comprises introducing a mixt. of diester (I), monoester (II), alcohol (III) and esterification catalyst into a column at b.pt. of (III) or a temp. up to 40 degrees C. higher. The liq. mixt. passes up the flooded column in the same direction as water and alcohol vapour. The rise speed of the vapour bubbles is reduced, and water and (III) are removed as overhead, while crude (I) is taken off as a side-stream below the column head. The starting mixt. comprises 50-70 wt. % (ROOC)2A (A=1,2-phenylene or (CH2)4; R=4-11C alkyl); 3-15% HOOC.R.COOR; 27-35% ROH, and 0.05-0.1 wt. % catalyst. No azeotropic agent is needed to remove the water and a uniform temp. profile and constant boiling conditions are maintained in the column, so fractionation is avoided. Back-saponification of the prodn. does not occur.

公开(公告)号：DE2421406A1

公开(公告)日：1975-11-20

申请号：DE2421406

申请日：1974-05-03

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  HORNBERGER PAUL DIPL CHEM DR ,  REUTER PETER DIPL CHEM DR

IPC: C07D307/89 ,  B01J20060101 ,  B01J21/00 ,  B01J21/06 ,  B01J23/04 ,  B01J23/22 ,  B01J37/02 ,  C07B61/00 ,  C07C51/16 ,  C07C51/265 ,  C07C51/31 ,  C07C63/14 ,  C07D20060101

Abstract: A supported catalyst for the oxidation of o-xylene or naphthalene into phthalic anhydride which contains in the catalytically active material (in addition to from 1 to 40% by weight of V2O5 and from 60 to 99% by weight of anatase) from 0.01 to 0.15% by weight, based on the anatase, of sodium or potassium in the form of a compound devoid of sulfur.