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:
Jul. 19, 2011
Filed:
Sep. 26, 2007
Jingming Shao, Shanghai, CN;
Jun Yin, Shanghai, CN;
Shuju Liu, Shanghai, CN;
Xiaodong Chu, Shanghai, CN;
Shengxian Xu, Shanghai, CN;
Jingming Shao, Shanghai, CN;
Jun Yin, Shanghai, CN;
Shuju Liu, Shanghai, CN;
Xiaodong Chu, Shanghai, CN;
Shengxian Xu, Shanghai, CN;
Shanghai HuaYi Acrylic Acid Co., Ltd., Shanghai, CN;
Abstract
There is provided a method for rectifying a vinyl compound liquor. The method includes the steps of a) providing a rectification column operated at a temperature and pressure and b) feeding the vinyl compound liquor to be rectified into the rectification column, wherein the pressure of the rectification column and the temperature of the fed vinyl compound liquor are controlled, such that the temperature of the fed vinyl compound liquor ranges from its bubble point at the pressure of the rectification column to 10° C. lower than the bubble point.