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. 23, 2015
Filed:
Nov. 02, 2011
Hong LI, Jiangsu, CN;
Quanxing Zhang, Jiangsu, CN;
Wei Huang, Jiangsu, CN;
Wei Jiang, Jiangsu, CN;
Xupeng Zong, Jiangsu, CN;
Bingcai Pan, Jiangsu, CN;
Hong Li, Jiangsu, CN;
Quanxing Zhang, Jiangsu, CN;
Wei Huang, Jiangsu, CN;
Wei Jiang, Jiangsu, CN;
Xupeng Zong, Jiangsu, CN;
Bingcai Pan, Jiangsu, CN;
NANJING UNIVERSITY, Nanjing, CN;
Abstract
Disclosed is a high molecular weight polylactic acid synthesized by using a method for synthesizing and catalytically-polycondensing bionic creatinine-guanidinium chloride. Creatinine is used as the material in a reaction with aqueous hydrochloric acid to synthesize a bionic creatinine-guanidinium salt catalyst, creatinine-guanidinium chloride (CR.Cl). The creatinine-guanidinium chloride synthesized is used as a catalyst, an industrial grade lactic acid (LA, 85% to 90%, aqueous solution) is used as a monomer, a solvent-free two-step polycondensation method is used to synthesize and afford metal-free and toxic residue-free polylactic acid featuring high biological safety and high molecular weight.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile