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:
Aug. 23, 2016
Filed:
Sep. 25, 2012
Applicant:
Nippon Shokubai Co., Ltd., Osaka, JP;
Inventors:
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 20/10 (2006.01); C07C 45/52 (2006.01); C07C 45/78 (2006.01); C07C 51/235 (2006.01); C07C 45/86 (2006.01); C07C 51/25 (2006.01); C07C 67/05 (2006.01); C08F 20/06 (2006.01);
U.S. Cl.
CPC ...
C08F 20/10 (2013.01); C07C 45/52 (2013.01); C07C 45/78 (2013.01); C07C 45/86 (2013.01); C07C 51/235 (2013.01); C07C 51/252 (2013.01); C07C 67/05 (2013.01); C08F 20/06 (2013.01);
Abstract
A process for producing acrolein, comprising: a glycerin dehydration step of conducting dehydration reaction of glycerin to obtain an acrolein-containing gas; a partial-condensation step of cooling the acrolein-containing gas to condense a part of acrolein, water and a high-boiling substance contained in the acrolein-containing gas, thereby obtaining a purified gas and a condensate; and a separation step of separating the purified gas from the condensate; wherein a polymerization inhibitor is added to the acrolein-containing gas or the condensate in the partial-condensation step.