公开(公告)号：US3801634A

公开(公告)日：1974-04-02

申请号：US3801634D

申请日：1971-11-18

Applicant: BASF AG

Inventor： KRABETZ R ,  WILLERSINN C ,  LEBERT U ,  FREY W ,  ENGELBACH H ,  WISTUBA H

IPC: B01J8/06 ,  C07C45/35 ,  C07C51/25 ,  C07C57/04 ,  C07C51/32

CPC classification number: C07C45/35 ,  B01J8/06 ,  B01J2208/025 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

Abstract: THE OXIDATION OF PROPYLENE TO ACRYLIC IN TWO STAGES VIA ACROLEIN USING CONVENTIONAL OXIDATION CATALYSTS PROCEEDS PARTICULARLY WELL WHEN THE ACTIVITY OF THE CATALYSTS IN THE TWO STAGES INCREASES IN THE DIRECTION OF FLOW OF THE REACTION GASES AND THE OFF-GASES FROM THE SECOND STAGE ARE RECYCLED TO THE FIRST STAGE AS DILUTING GASES.

公开(公告)号：NZ200114A

公开(公告)日：1984-10-19

申请号：NZ20011482

申请日：1982-03-24

Applicant: BASF AG

Inventor： DEGEN H-J ,  GUENDER W ,  LINHART F ,  AUHORN W ,  FREY W ,  STREIT W ,  FIKENTSCHER R

IPC: C02F1/58 ,  B01D21/01 ,  B01D37/02 ,  C02F1/28 ,  C02F1/52 ,  C02F1/54 ,  C02F1/56

Abstract: A process for removing anionic compounds from water which is recycled in manufacturing processes, and from waste water, by adding (1) water-soluble products obtained by reacting an alkylating agent, having an aromatic substituent, with a cationic polyelectrolyte and (2) mineral adsorbents and/or a magnesium salt, aluminum salt or iron salt, with formation and flocculation of water-insoluble reaction products.

公开(公告)号：CA986537A

公开(公告)日：1976-03-30

申请号：CA147097

申请日：1972-07-13

Applicant: BASF AG

Inventor： DUEMBGEN G ,  ENGELBACH H ,  FREY W ,  HERMANN T ,  HERMANN F ,  KRABETZ R ,  LEBERT U ,  WILLERSINN C

IPC: C07C51/25 ,  C07C51/48 ,  C07C57/07

Abstract: Acrylic acid practically devoid of water, acrolein, formaldehyde and acetic acid is obtained at particularly low cost by countercurrent scrubbing and quenching of the reaction gas formed in the catalytic oxidation of propylene and/or acrolein with a high-boiling, extremely hydrophobic solvent followed by processing of the extract.