Title:
PRODUCTION OF HIGHLY POLYMERIZABLE MONOMER
Document Type and Number:
Japanese Patent JP3674966
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for readily and efficiently producing high purity N-vinylcarboxylic amide having good polymerizable property.
CONSTITUTION: When N-vinylcarboxylic amide is produced by thermal decomposition or catalytic decomposition of a crude N-(1-alkoxyethyl)carboxylic amide or a crude ethylidenebiscarboxylic amide, N-vinylcarboxylic amide content in the crude N (1-alkoxyethyl)carboxylic amide or the crude ethylidenebiscarboxylic amide is kept to ≥10wt.% or pH of 33wt.% aqueous solution of the crude N-(1-alkoxyethyl)carboxylic amide or the crude ethylidenebiscarboxylic amide is adjusted so as to be 5-10 to produce the objective N-vinylcarboxylic amide having good polymerizable property.
Inventors:
Hitoshi Nakamura
Shunichi Nagamatsu
Tetsuo Kudo
Takehiko Teshima
Toshiyuki Aizawa
Shunichi Nagamatsu
Tetsuo Kudo
Takehiko Teshima
Toshiyuki Aizawa
Application Number:
JP27527894A
Publication Date:
July 27, 2005
Filing Date:
November 09, 1994
Export Citation:
Assignee:
SHOWA DENKO K.K.
International Classes:
C07C231/08; C07C231/12; C07C233/02; C07C233/05; C08F26/00; C08F26/02; (IPC1-7): C07C231/08; C07C231/12; C07C233/05
Domestic Patent References:
| JP62195352A | ||||
| JP63190862A |
Attorney, Agent or Firm:
Shinji Kakinuma