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:
Jul. 17, 2007
Filed:
Dec. 08, 2006
Chungu Xia, Gansu, CN;
Zhonghua Tang, Gansu, CN;
Jing Chen, Gansu, CN;
Xinzhi Zhang, Gansu, CN;
Zhen LI, Gansu, CN;
Enxiu Guo, Gansu, CN;
Chungu Xia, Gansu, CN;
Zhonghua Tang, Gansu, CN;
Jing Chen, Gansu, CN;
Xinzhi Zhang, Gansu, CN;
Zhen Li, Gansu, CN;
Enxiu Guo, Gansu, CN;
Lanzhou Institute of Chemical Physics Chinese Academy of Sciences, Lanzhou Gansu, CN;
Abstract
The present invention relates to a method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an acidic ionic liquid. In the method, formaldehyde solution with a concentration of 30˜80 wt % is used as reactant, and an ionic liquid is used as catalyst. The cation moiety of the catalyst is selected from either imidazoles cation or pyridines cation, and the anion moiety of the catalyst is selected from one of p-tolyl benzene sulfonate, trifluoromethyl sulfonate, and hydrogen sulfate. In the present invention, ionic liquid is used, for the first time, as a catalyst to synthesize trioxymethylene from formaldehyde. The catalyst can be circularly used for continuous sampling.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile