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:
Nov. 06, 2007
Filed:
Sep. 22, 2004
Hideyuki Higashimura, Tsukuba, JP;
Yuji Yoshida, Tokyo, JP;
Daisuke Fukushima, Tsukuba, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A method of producing a polyarylene oxide comprising a step of oxidative polymerization of a monomer represented by the general formula (1) in an organic solvent in the presence of a transition metal compound, wherein, Ar represents a benzene ring or a naphthalene ring, Rrepresents a hydrocarbon group optionally substituted, a hydrocarbonoxy group optionally substituted, or a halogen atom; a represents an integer of 0 to 5, and when a is 2 or more, Rs may be the same or different, adjacent Rs may mutually bond to form a ring; Rrepresents a single bond or an arylene group; Rrepresents a hydrocarbon group optionally substituted or a trialkylsilyl group.