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, 2011
Filed:
Feb. 13, 2007
Tsutomu Yokozawa, Kanagawa, JP;
Hideyuki Higashimura, Ibaraki, JP;
Tsutomu Yokozawa, Kanagawa, JP;
Hideyuki Higashimura, Ibaraki, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A method for producing an aromatic polymer includes polycondensing an aromatic compound represented by formula (I) in the presence of a nickel complex containing a phosphine compound represented by formula (II), wherein, Ar denotes an aromatic ring containing organic group, which aromatic ring may contain an oxygen atom and/or a nitrogen atom; R denotes a monovalent group containing a hydrocarbon group; k is an integer of 1 or more; X denotes an halogen atom, a nitro group or a group represented by —SOQ, wherein Q denotes a monovalent hydrocarbon group; Y denotes O, S, an imino group, an ethenylene group, or an ethynylene group; n denotes 0 or 1; and M denotes H, —B(OQ), —Si(Q), —Sn(Q)or —Z(Z)m, wherein Qdenotes H or a monovalent hydrocarbon group; Qand Qdenote a monovalent hydrocarbon group; Zdenotes a metal atom or a metal ion; Zdenotes a counter ion; and m is an integer of 0 or higher; wherein, Rdenotes a monovalent hydrocarbon group, and Rdenotes a divalent hydrocarbon group.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile