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:
Jan. 10, 2017
Filed:
Mar. 11, 2011
Applicants:
Chunde Liu, Beijing, CN;
Shiyi Yuan, Beijing, CN;
Demin Wang, Beijing, CN;
Xinmin Song, Beijing, CN;
Inventors:
Chunde Liu, Beijing, CN;
Shiyi Yuan, Beijing, CN;
Demin Wang, Beijing, CN;
Xinmin Song, Beijing, CN;
Assignee:
PETROCHINA COMPANY LIMITED, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/584 (2006.01); C07C 309/14 (2006.01); C07C 229/14 (2006.01);
U.S. Cl.
CPC ...
C09K 8/584 (2013.01); C07C 229/14 (2013.01); C07C 309/14 (2013.01);
Abstract
Betaine surfactants of formula (I) and preparation methods and uses thereof are provided. The surfactant can decrease the interfacial surface tension of crude oil till 10mN/m, have the capabilities of antiheating (130° C.), antimineralizing and antidiluting, and can be used in the field of tertiary oil recovery.