Invention Grant
US08436214B2 Noncrystalline form of fluorene derivative and process for preparation thereof 有权
非晶形式的芴衍生物及其制备方法

Noncrystalline form of fluorene derivative and process for preparation thereof
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.
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