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公开(公告)号:US06307004B1
公开(公告)日:2001-10-23
申请号:US09398677
申请日:1999-09-20
申请人: James Claude Carnahan , John Patrick Lemmon , Radislav Alexandrovich Potyrailo , Terry Kay Leib , Gregory Lee Warner
发明人: James Claude Carnahan , John Patrick Lemmon , Radislav Alexandrovich Potyrailo , Terry Kay Leib , Gregory Lee Warner
IPC分类号: C08G6400
CPC分类号: C08G64/205 , B01J19/0046 , B01J2219/00306 , B01J2219/00495 , B01J2219/00585 , B01J2219/0068 , B01J2219/00698 , B01J2219/00722 , C08G64/24 , C08G64/307 , C40B40/14 , C40B60/14
摘要: In an exemplary embodiment, the method includes the steps of providing an array of reaction vessels and providing a plurality of homogenous reaction mixtures within the reaction vessels. Each mixture comprises monomers at least partially embodied in a liquid and is provided in an amount sufficient to form a film having a thickness sufficient to allow the reaction rate of the polymerization reaction to be essentially independent of mass transport. Polymerization then takes place in the presence of a catalyst at reaction conditions effective in substantially maintaining the homogeneity of the reaction mixture. In this manner, polymerization can take place quickly and efficiently without stirring the reactants. The method is highly useful for testing reactants, catalysts, and associated reaction parameters.
摘要翻译: 在一个示例性实施方案中,该方法包括提供反应容器阵列并在反应容器内提供多个均匀的反应混合物的步骤。 每种混合物包含至少部分地以液体实施的单体,并且其量足以形成具有足以使聚合反应的反应速率基本上与质量传输无关的厚度的膜。 然后在有效地基本上保持反应混合物的均匀性的反应条件下,在催化剂存在下进行聚合。 以这种方式,聚合可以快速有效地进行而不搅拌反应物。 该方法对于测试反应物,催化剂和相关的反应参数非常有用。
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公开(公告)号:US06541264B1
公开(公告)日:2003-04-01
申请号:US09692548
申请日:2000-10-19
IPC分类号: G01N3344
CPC分类号: G01N21/6452 , G01N21/6428 , G01N2021/6421
摘要: In a rapid and non-invasive method for characterizing aromatic polycarbonates, fluorescence intensities are determined at least two wavelength ranges and used to calculate a compositional or physical property of the sample. The method is suitable for determining the relative amounts of linear and branched polycarbonates, and it is fast enough to monitor the progress of polymerization reactions.
摘要翻译: 在用于表征芳族聚碳酸酯的快速和非侵入性方法中,荧光强度被确定为至少两个波长范围,并用于计算样品的组成或物理性质。 该方法适用于确定直链和支链聚碳酸酯的相对量,并且足够快以监测聚合反应的进展。
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