The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2001
Filed:
Feb. 19, 1999
Applicant:
Inventors:
Yukihiro Matsumoto, Kobe, JP;
Kazukiyo Arakawa, Himeji, JP;
Osamu Dodo, Hyogo-ken, JP;
Hiroo Iwato, Himeji, JP;
Mamoru Takamura, Takasago, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/14 ; C07C 5/144 ;
U.S. Cl.
CPC ...
B01D 3/14 ; C07C 5/144 ;
Abstract
In a method for distilling (meth)acrylic acid and/or (meth)acrylic ester, the method has the step of uniformly distributing a supply liquid in a distillation tower over an entirety of a horizontal cross sectional area in the distillation tower. A distillation apparatus for distilling (meth)acrylic acid and/or (meth)acrylic ester in a distillation tower has a supply element for supplying the supply liquid into the distillation tower. The supply element is formed with at least two supply ports through which the liquid is supplied into the distillation tower.