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:
Jun. 18, 2013
Filed:
Feb. 12, 2009
Zhi Yuan, Tianjin, CN;
Chunhong Wang, Tianjin, CN;
Rongfu Shi, Tianjin, CN;
Jing Zhang, Shanghai, CN;
Ping Ren, Langfang, CN;
Yingchao Chen, Shanghai, CN;
Zhi Yuan, Tianjin, CN;
Chunhong Wang, Tianjin, CN;
Rongfu Shi, Tianjin, CN;
Jing Zhang, Shanghai, CN;
Ping Ren, Langfang, CN;
Yingchao Chen, Shanghai, CN;
Nankai University, Tianjin, CN;
Abstract
Provided are a kind of high selectivity polymeric adsorbents with amide functional groups based on the hydrogen bonding interaction, which is prepared by adequately swelling a DVB-co-MA copolymer of 6% crosslinking degree as the initial resin with dimethyl formamide, performing an amination reaction by adding a diamine, soaking the dried resultant yellow resin with an acylating agent that is a dianhydride, and performing an acylation reaction to obtain the polymeric adsorbent with amide functional groups of the invention. The polymeric adsorbent of the invention can be used to effectively isolate and purify the active ingredients, i.e., flavones and lactones, from the extract of ginkgo leaf.