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:
Sep. 20, 2005
Filed:
Dec. 23, 2003
Shinji Nakano, Tokushima, JP;
Yuji Tada, Tokushima, JP;
Tadao Yabuhara, Tokushima, JP;
Takashi Kameshima, Tokushima, JP;
Yoichi Nishioka, Tokushima, JP;
Hiroyuki Takase, Tokushima, JP;
Shinji Nakano, Tokushima, JP;
Yuji Tada, Tokushima, JP;
Tadao Yabuhara, Tokushima, JP;
Takashi Kameshima, Tokushima, JP;
Yoichi Nishioka, Tokushima, JP;
Hiroyuki Takase, Tokushima, JP;
Otsuka Chemical Co., Ltd., Osaka, JP;
Abstract
An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH/g.