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. 21, 2012
Filed:
Mar. 23, 2007
Applicants:
Junichi Nakajima, Yokkaichi, JP;
Seiji Tanizaki, Yokkaichi, JP;
Inventors:
Junichi Nakajima, Yokkaichi, JP;
Seiji Tanizaki, Yokkaichi, JP;
Assignee:
Hakuto Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 3/00 (2006.01); C09K 15/16 (2006.01); C09K 15/10 (2006.01); C09K 15/00 (2006.01); C09K 15/04 (2006.01); C07C 7/20 (2006.01); C10M 105/02 (2006.01); C10M 109/00 (2006.01); C10M 111/00 (2006.01); C10M 115/02 (2006.01); C10M 119/00 (2006.01); C10M 121/00 (2006.01); C10M 127/00 (2006.01); C10M 159/00 (2006.01); C07B 63/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for inhibiting polymerization of an aromatic vinyl compound during the stage of producing, purifying, storing or transporting the aromatic vinyl compound which not only inhibits an initial polymerization but also inhibits polymerization efficiently over a long period of time and which is excellent in the handleability. The process involves the step of adding a nitrogenous aromatic compound in combination with a sulfonic acid compound to the aromatic vinyl compound during the production, purification, storage of transportation thereof.