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. 16, 2016
Filed:
May. 15, 2013
China Petroleum & Chemical Corporation, Beijing, CN;
Shanghai Research Institute of Petrochemical Technology, Sinopec, Shanghai, CN;
Liangfeng Chen, Shanghai, CN;
Wenjun He, Shanghai, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Shanghai Research Institute of Petrochemical Technology, Sinopec, Shanghai, CN;
Abstract
This invention relates to a supported quaternary phosphonium catalyst, preparation thereof and use thereof in producing dialkyl carbonates. The supported quaternary phosphonium catalyst of this invention has the following average molecular structure (I), and is characterized by a relatively high and stable catalyst activity. wherein, each of X, L, n, R, R, Rand is the same as that in the specification.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile