Title:
ブタンジオールジメタクリレートの製造法
Document Type and Number:
Japanese Patent JP5885924
Kind Code:
B2
Abstract:
The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.
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Inventors:
Joachim Knebel
Torben Schutz
Halal trout vine
Thomas kale
Gunter Rooster
Guido Protzman
Gerhard Kelbur
Gunther Westhauser
Torben Schutz
Halal trout vine
Thomas kale
Gunter Rooster
Guido Protzman
Gerhard Kelbur
Gunther Westhauser
Application Number:
JP2010513806A
Publication Date:
March 16, 2016
Filing Date:
May 08, 2008
Export Citation:
Assignee:
Evonik Roehm GmbH
International Classes:
C07C67/03; C07B61/00; C07C67/54; C07C67/62; C07C69/54
Domestic Patent References:
| JP6156155A | ||||
| JP1113345A |
Foreign References:
| EP0534666A2 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Ryoichi Shino
Takuya Kuno
Ryoichi Shino