Title:
ビニル化合物の重合防止方法
Document Type and Number:
Japanese Patent JP3544985
Kind Code:
B2
Abstract:
There is disclosed a process for preventing the polymerization of a vinyl compound which comprises allowing a corrosion inhibitive substance selected from an alcohol, an inorganic acid or its salt, an aromatic carboxylic acid or its salt and a zinc-containing salt in an amount of preferably 0.01 to 5% by weight based on the same, to coexist with a metallic salt of dithiocarbamic acid, in preventing the polymerization of the vinyl compound with the metallic salt of dithiocarbamic acid. The above process makes it possible to effectively inhibit the polymerization of acrylic acid, methacrylic acid, etc. in the distillation system, etc. of the production process for the above acids as well as the corrosion of the equipment and machinery to be used therein and also to assure long-term stable continuous operation of the equipment and machinery.
Inventors:
Kenji Okamoto
Takashi Nakagawa
Hideaki Mimaki
Koji Tomita
Takashi Nakagawa
Hideaki Mimaki
Koji Tomita
Application Number:
JP50936796A
Publication Date:
July 21, 2004
Filing Date:
August 29, 1995
Export Citation:
Assignee:
Idemitsu Petrochemical Co., Ltd.
International Classes:
C07B63/04; C07C51/50; C07C57/075; (IPC1-7): C07C51/50; C07C57/075
Domestic Patent References:
| JP551403A | ||||
| JP50101313A | ||||
| JP60202834A | ||||
| JP4985016A |
Attorney, Agent or Firm:
Tamotsu Otani