Distillation method of solution with easy-to-polymerize material

Application Number  00128303 Application Date  2000.11.08
Publication Number  1295058 Publication Date  2001.05.16
Priority Information   1999/11/8 JP 317548/99  
Applicant(s) Name  Nippon Shokubai Co., Ltd.  
Inventor(s) Name  Kometa Sachihiro;Nishimura Takeshi;Atarashiya Kyohiro  
Patent Agency Code  31100 Patent Agent  zhou chengze
AbstractThe present invention provides a process which can prevent polymerization when distilling a solution containing easily polymerizable substances such as (meth)acrylic acid and (meth)acrylic acid ester. In the distillation process for an easily polymerizable substance-containing solution which comprises the step of distilling an easily polymerizable substance-containing solution by a distillation column equipped with a condenser for condensation at a vapor outlet of the distillation column, at least one condenser for polymerization inhibition is further placed in series on a vapor outlet side of the condenser for condensation, and the easily polymerizable substance which is contained in vapor from an upstream condenser is condensed by a downstream condenser.