Title:
流体相における圧力下での(メタ)アクリル酸オリゴマーの分割
Document Type and Number:
Japanese Patent JP2007523120
Kind Code:
A
Abstract:
The present invention relates to a process for cleaving a (meth)acrylic acid oligomer of structure I wherein R1 is a hydrogen atom or a C1 to C10 alkyl groups, R2 is a hydrogen atom or a methyl group, and n is a whole number within the range between 1 and 200, optionally in the presence of a cleaving agent of the structure R3-OH or of the structure (R4)2-N-H, whereby R3 is a hydrogen atom, a C1 to C12 alkyl group, or a -CxH2x-OH- group, whereby x is a whole number within a range from 1 to 12, and R4 is a hydrogen atom or a C1 to C12 alkyl group, with the proviso that not both R4 groups are hydrogen atoms, whereby the (meth)acrylic acid oligomers are heated with the cleaving agent to a temperature of at least 50° C. at a pressure of at least 1 bar. The present invention also relates to the use of water, optionally with a protic compound as cleaving agent for cleaving (meth)acrylic acid oligomers, a device for (meth)acrylic acid synthesis, the use of this device for production of (meth)acrylic acid, as well as (meth)acrylic acid which has been produced using this device.
More Like This:
Inventors:
Barduf Torsten
Mosrel Juergen
Rasuke Thomas
Tone You-Chan Dennis
Cobs axel
Burghard rudolf
Fricke Michael Bernd
Nord stephan
Mosrel Juergen
Rasuke Thomas
Tone You-Chan Dennis
Cobs axel
Burghard rudolf
Fricke Michael Bernd
Nord stephan
Application Number:
JP2006553550A
Publication Date:
August 16, 2007
Filing Date:
February 18, 2005
Export Citation:
Assignee:
Stockhausen Game Behr
International Classes:
C07C51/377; B01D3/14; B01D5/00; B01D9/00; B01J8/00; B01J19/24; C07C51/09; C07C51/347; C07C51/493; C07C57/04; C07C57/07; C07C67/03; C07C67/08; C07C67/54; C07C69/54; C07B61/00
Domestic Patent References:
| JP2001508076A | 2001-06-19 | |||
| JP2004010678A | 2004-01-15 | |||
| JPS5498718A | 1979-08-03 |
Attorney, Agent or Firm:
Kenji Akatsuka
Yasuo Fukuda
Yasuyuki Sakata
Yasuo Fukuda
Yasuyuki Sakata