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. 12, 2000
Filed:
Jun. 25, 1998
Hitoshi Mitsui, Kitakatsuragi-gun, JP;
Tsunemasa Ueno, Ikeda, JP;
Ikuyo Ikeno, Osaka, JP;
Naoko Yamamoto, Nishinomiya, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
A (fluoroaryl)borane compound expressed by General Formula (1): ##STR1## where each of R.sub.1 -R.sub.5 represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group, provided that at least one of R.sub.1 -R.sub.5 represents a fluorine atom, X represents a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, and n represents 2 or 3, is stabilized by letting inorganic metal salts having a fluorine atom coexist with the (fluoroaryl)borane compound in a hydrocarbon solution. After the hydrocarbon solution is concentrated in the presence of the inorganic metal salts, the inorganic metal salts are removed and the fluoroaryl)borane compound is crystallized. Consequently, it has become possible to provide a method of stabilizing a (fluoroaryl)borane compound by suppressing the decomposition reaction while the solution is heated and concentrated, stored (preserved), or transported/transferred, and a crystallizing method of isolating highly-pure crystals (powders) of the (fluoroaryl)borane compound efficiently.