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:
Dec. 16, 1997
Filed:
Aug. 16, 1996
Longxiu Dai, Beijing, CN;
Qiwei Duan, Beijing, CN;
Hongbo Ji, Beijing, CN;
Xiaoyuan Wang, Beijing, CN;
Jinqiang Mo, Beijing, CN;
Jinfeng Wang, Beijing, CN;
Hongmei Liu, Beijing, CN;
Xiuqin Li, Beijing, CN;
Jiuhua Chen, Beijing, CN;
Ping Gao, Beijing, CN;
China Paeto-Chemical Corporation, Beijing, CN;
Research Institute of Petroleum Processing SINOPEC, Beijing, CN;
Abstract
Disclosed is a process for the preparation of bistriphenylsilyl chromate, wherein triphenylchlorosilane, potassium dichromate and any one selected from alkali metal oxides, alkali hydroxides and alkali metal carbonates are reacted in, as solvent, a mixture of glacial acetic acid and a hydrocarbon solvent at a certain temperature, whereby bistriphenylsilyl chromate having high purity can be obtained with high yield.