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:
May. 07, 2013
Filed:
Jun. 01, 2010
Katsuhiro Fujii, Hyogo, JP;
Suguru Hata, Hyogo, JP;
Kohta Fukui, Chiba, JP;
Taoka Chemcial Co., Ltd., Osaka, JP;
Abstract
An object of the present invention is to provide (i) a novel non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene, which non-crystalline form maintains quality at a certain level, and is excellent as a polymer material, and (ii) a method of preparing the non-crystalline form. According to the present invention, molten 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene in a liquid form is cooled and therefore is solidified. With the method, it is possible to provide a novel non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene which has a small risk that powder dust of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorine might cause explosion or a health problem. Further, the non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene can be adjusted arbitrarily in particle diameter by, for example, pulverizing the non-crystalline form in accordance with equipment or usage. In other words, the non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene is advantageous in handleability industrially.