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:
Dec. 02, 2008
Filed:
Aug. 14, 2007
Tadashi Mizuno, Ibaraki, JP;
Nobuhiro Arai, Nagaokakyo, JP;
Erina Honda, Osaka, JP;
Hideo Muraoka, Toyonaka, JP;
Tadashi Mizuno, Ibaraki, JP;
Nobuhiro Arai, Nagaokakyo, JP;
Erina Honda, Osaka, JP;
Hideo Muraoka, Toyonaka, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
An epoxy compound of the formula (1): wherein, R represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and Ar represents an optionally substituted aromatic group, can be purified by dissolving a crude product containing the epoxy compound (1), an aprotic polar solvent and an alkali metal salt in a two-phase solvent composed of water and an organic solvent, which is capable of phase-separating from water, obtaining the organic layer by phase separation, washing with water and then subjecting to isolation of the epoxy compound (1) without decomposition.