公开(公告)号：AT396963T

公开(公告)日：2008-06-15

申请号：AT02777265

申请日：2002-09-30

Applicant: BASF SE

Inventor： NESTLER GERHARD ,  SCHROEDER JUERGEN

IPC: C07C51/25 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00

公开(公告)号：DE50214843D1

公开(公告)日：2011-02-10

申请号：DE50214843

申请日：2002-05-28

Applicant: BASF SE

Inventor： GEISENDOERFER MATTHIAS ,  NESTLER GERHARD ,  SCHROEDER JUERGEN ,  VANDENMERSCH HUGUES

IPC: C07C213/06 ,  C07B61/00 ,  C07C213/10 ,  C07C219/08

公开(公告)号：AT486836T

公开(公告)日：2010-11-15

申请号：AT02767312

申请日：2002-08-02

Applicant: BASF SE

Inventor： FUCHS EBERHARD ,  MARTAN HANS ,  NESTLER GERHARD ,  MUELLER-ENGEL KLAUS

IPC: C07C51/25 ,  C07C51/215 ,  C07C51/235 ,  C07C51/43 ,  C07C51/44 ,  C07C51/487 ,  C07C57/05 ,  C07C57/07

Abstract: Process for preparation of a water absorbing resin from acrylic acid by its absorption from the reaction gases from catalytic gas phase oxidation of propane, propylene and/or acrolein in an absorption liquid or by separation of the crude acid from the reaction gases by fractional condensation, purification by crystallization, treatment of the crude acrylic acid with an aldehyde trap, (c) separation of pure acrylic acid by distillation, and its radical polymerization is new. A process for preparation of a water absorbing resin involving:(a) production of crude acrylic acid either (a) absorption of acrylic acid from the reaction gases from the catalytic gas phase oxidation of propane, propylene and/or acrolein in an absorption liquid and isolation of crude acrylic acid from acrylic acid loaded absorption liquid, or (a2) by separation of crude acrylic acid from the reaction gases by fractional condensation, and purification by crystallization, (b) treatment of the crude acrylic acid with an aldehyde trap, (c) separation of pure acrylic acid from the crude acrylic acid by distillation, and (d) radical polymerization, optionally after partial neutralization, optionally mixed with other ethylenically unsaturated monomers, of the pure acrylic acid.

公开(公告)号：DE50212330D1

公开(公告)日：2008-07-10

申请号：DE50212330

申请日：2002-09-30

Applicant: BASF SE

Inventor： NESTLER GERHARD ,  SCHROEDER JUERGEN

IPC: C07C51/25 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00

公开(公告)号：AT493380T

公开(公告)日：2011-01-15

申请号：AT02758206

申请日：2002-05-28

Applicant: BASF SE

Inventor： GEISENDOERFER MATTHIAS ,  NESTLER GERHARD ,  SCHROEDER JUERGEN ,  VANDENMERSCH HUGUES

IPC: C07C213/06 ,  C07B61/00 ,  C07C213/10 ,  C07C219/08

Abstract: Basic (meth)acrylates IV are prepared by transesterification of alkyl (meth)acrylates I in the presence of a catalyst and working-up of the reaction mixture by distillation, by a process in which a gas or gas mixture which is inert under the reaction conditions is passed through the reaction zone and/or heat exchanger.

公开(公告)号：DE50214752D1

公开(公告)日：2010-12-16

申请号：DE50214752

申请日：2002-08-02

Applicant: BASF SE

Inventor： FUCHS EBERHARD ,  MARTAN HANS ,  NESTLER GERHARD ,  MUELLER-ENGEL KLAUS JOACHIM

IPC: C07C51/25 ,  C07C51/215 ,  C07C51/235 ,  C07C51/43 ,  C07C51/44 ,  C07C51/487 ,  C07C57/05 ,  C07C57/07 ,  C07C57/075 ,  C08F220/00