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:
Jan. 09, 2007
Filed:
May. 27, 2004
Hideyuki Higashimura, Tsukuba, JP;
Eiichi Kotake, Tsukuba, JP;
Masaaki Kubota, Tsukuba, JP;
Shiro Kobayashi, Kyoto, JP;
Hideyuki Higashimura, Tsukuba, JP;
Eiichi Kotake, Tsukuba, JP;
Masaaki Kubota, Tsukuba, JP;
Shiro Kobayashi, Kyoto, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
Provided is a method for producing a phenol condensate by oxidative condensation of a phenol compound not having a substituted group on at least one ortho-position, in the presence of a specific complex (II) and oxygen, wherein a condensate coupled at para-position of the phenol can be produced in an excellent yield,L-M (X)  (II)wherein L represents a ligand having 2 to 4 nitrogen atoms as donor atoms, M represents copper ion, nickel ion, cobalt ion, iron ion, manganese ion, chromium ion or vanadyl ion, X represents a counter ion, n is a number of Xs.