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. 09, 2009
Filed:
Oct. 10, 2008
Chan-yuan Ho, Hsinchu, TW;
Tsair-feng Lin, Bade, TW;
Chun-hsu Lin, Taipei, TW;
Shieh-jun Wang, Taipei, TW;
Chan-Yuan Ho, Hsinchu, TW;
Tsair-Feng Lin, Bade, TW;
Chun-Hsu Lin, Taipei, TW;
Shieh-Jun Wang, Taipei, TW;
Yuan-Shin Materials Technology Corp., Taipei, TW;
Chun-Shan Institute of Science and Technology Araments Bureau, M.N.D., Taoyuan, TW;
Abstract
A method for producing 1,4-bis(dichloromethyl)tetrafluorobenzene is disclosed, which is achieved by reacting tetrafluoroterephthaldehyde, SOCland organic solvents. In the synthesis of 1,4-bis(dichloromethyl)-tetrafluorobenzene by adding formamides as catalyst, there are remarkable advantages which include shortening the reaction time; simplifying the synthesizing steps and raising the yield of the product.