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:
Jul. 03, 2001
Filed:
Apr. 13, 1999
Takaomi Hayashi, Kanagawa, JP;
Katsuhiko Funaki, Kanagawa, JP;
Atsushi Shibahara, Kanagawa, JP;
Kazumi Mizutani, Kanagawa, JP;
Isao Hara, Kanagawa, JP;
Shinji Kiyono, Kanagawa, JP;
Tadahito Nobori, Kanagawa, JP;
Usaji Takaki, Kanagawa, JP;
Mitsui Chemicals, Inc., , JP;
Abstract
There is provided a process for preparing a poly(alkylene oxide) by using a polymerization initiator which does not cause any problem on preparing and handling in the preparation of the polyalkylene oxide by polymerizing an alkylene oxide compound and does not require a special treatment before the initiation of the polymerization. That is, it is a process of polymerizing the alkylene oxide compound in the presence of a phosphine oxide compound represented by the formula (1):