Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent... – For inhibiting or preventing a polymerization reaction
Patent
1974-10-01
1976-10-26
Lutter, Frank W.
Distillation: processes, separatory
Addition of material to distilland to inhibit or prevent...
For inhibiting or preventing a polymerization reaction
203DIG21, 260499, 260990, 261152, B01D 334, C07C 718
Patent
active
039882136
ABSTRACT:
A method of distilling a polymerizable vinyl compound selected from the group consisting of acrolein, methacrolein, acrylic acid, methacrylec acid, hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, glycidyl acrylate and glycidyl methacrylate, the method comprising distilling the polymerizable vinyl compound in the presence of a polymerization inhibitor using a distillation tower having perforated trays without downcomers and wherein the temperature of the inner wall of the tower is maintained at a temperature sufficient to prevent the condensation of the vapor being distilled, whereby the polymerizable vinyl compound is distilled without the formation of polymer.
REFERENCES:
patent: 3464893 (1969-09-01), Gorodetsky
patent: 3717553 (1973-02-01), Otsuki et al.
Kobayashi Daizo
Kubota Kunihiro
Ohara Takashi
Shimizu Noboru
Yoshida Sadao
Lutter Frank W.
Nippon Shokubai Kagaku Kogyo & Co., Ltd.
Sever Frank
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