Title:
(メタ)アクリル酸の製造方法
Document Type and Number:
Japanese Patent JP2008506653
Kind Code:
A
Abstract:
The present invention relates to a process for production of (meth)acrylic acid, whereby first a crude (meth)acrylic acid is produced and this crude (meth)acrylic acid is then continuously purified, whereby the continuous purification of the crude (meth)acrylic acid comprises the following process steps: a) in a composition comprising (meth)acrylic acid and impurities, precipitating the impurities in crystalline form from the composition; and b) separating the crystalline impurities precipitated from the composition. The invention also relates to the (meth)acrylic acid obtainable by this process, a device for production of (meth)acrylic acid, the use of the device or of a purification device for production of (meth)acrylic acid, (meth)acrylic acid, water-absorbing polymers, the use of water-absorbing polymers as well as fibers, sheets, foams and composites.
Inventors:
Nord stephan
Barduf Torsten
Mosrel Juergen
Julich Billfleet
Tonk Yu-Chang Dennis
Cobs axel
Selbach arund
Corn Juergen
Barduf Torsten
Mosrel Juergen
Julich Billfleet
Tonk Yu-Chang Dennis
Cobs axel
Selbach arund
Corn Juergen
Application Number:
JP2007520768A
Publication Date:
March 06, 2008
Filing Date:
July 15, 2005
Export Citation:
Assignee:
Stockhausen Game Behr
International Classes:
C07C51/43; C07C51/487; C07C57/05; C08F2/00
Domestic Patent References:
| JPH09227445A | 1997-09-02 | |||
| JPH0748311A | 1995-02-21 | |||
| JPH0782210A | 1995-03-28 | |||
| JPH09124546A | 1997-05-13 | |||
| JP2003246765A | 2003-09-02 |
Foreign References:
| WO2003078378A1 | 2003-09-25 | |||
| WO2003014172A2 | 2003-02-20 |
Attorney, Agent or Firm:
Kenji Akatsuka
Yasuo Fukuda
Yasuyuki Sakata
Yasuo Fukuda
Yasuyuki Sakata