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1.发明申请Methods for preparing transparent articles from hydroquinone polycarbonate copolymers 有权由氢醌聚碳酸酯共聚物制备透明制品的方法公开(公告)号：US20070100118A1
公开(公告)日：2007-05-03
申请号：US11261262
申请日：2005-10-28
申请人： Gautam Chatterjee , Patrick McCloskey , Warren Reilly , William Richards , Subash Scindia , Gokul Srinivasan , Yatin Tayalia
发明人： Gautam Chatterjee , Patrick McCloskey , Warren Reilly , William Richards , Subash Scindia , Gokul Srinivasan , Yatin Tayalia
IPC分类号： C08G64/00
CPC分类号： C08G64/04 , C08G64/12 , C08G64/14 , C08G64/307 , C08G64/403
摘要： A method for producing a transparent article comprises the steps of melt transesterifying a monomer mixture in the presence of a transesterification catalyst to produce a hydroquinone polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the hydroquinone. The monomer mixture comprises a hydroquinone, at least one aromatic dihydroxy compound other than the hydroquinone, and a carbonic acid diester. The hydroquinone polycarbonate copolymer product is then heated to a highest processing temperature of 5° C. to 20° C. above a maximum melting melt temperature for the hydroquinone copolymer product for a sufficient period of time to render the hydroquinone polycarbonate copolymer product transparent upon cooling to ambient temperature; and cooling the hydroquinone polycarbonate copolymer product to produce the transparent article. The method can also be used for producing transparent hydroquinone polycarbonate copolymers, which can be used for producing the transparent articles.
摘要翻译： 制备透明制品的方法包括在酯交换催化剂存在下熔融酯交换单体混合物以产生包含大于45摩尔％的衍生自对苯二酚的结构单元的氢醌聚碳酸酯共聚物产物的步骤。 单体混合物包含氢醌，至少一种除氢醌以外的芳族二羟基化合物和碳酸二酯。 然后将对苯二酚聚碳酸酯共聚物产物加热至高于氢醌共聚物产物的最大熔融熔融温度的5℃至20℃的最高加工温度足够的时间以使氢醌聚碳酸酯共聚物产品在冷却时透明 到环境温度; 并冷却氢醌聚碳酸酯共聚物产物以制备透明制品。 该方法也可用于生产可用于生产透明制品的透明氢醌聚碳酸酯共聚物。
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2.发明授权Methods for preparing transparent articles from hydroquinone polycarbonate copolymers 有权由氢醌聚碳酸酯共聚物制备透明制品的方法公开(公告)号：US07528214B2
公开(公告)日：2009-05-05
申请号：US11261262
申请日：2005-10-28
申请人： Gautam Chatterjee , Patrick J. McCloskey , Warren W. Reilly , William D. Richards , Subash Scindia , Gokul Srinivasan , Yatin Tayalia
发明人： Gautam Chatterjee , Patrick J. McCloskey , Warren W. Reilly , William D. Richards , Subash Scindia , Gokul Srinivasan , Yatin Tayalia
CPC分类号： C08G64/04 , C08G64/12 , C08G64/14 , C08G64/307 , C08G64/403
摘要： A method for producing a transparent article comprises the steps of melt transesterifying a monomer mixture in the presence of a transesterification catalyst to produce a hydroquinone polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the hydroquinone. The monomer mixture comprises a hydroquinone, at least one aromatic dihydroxy compound other than the hydroquinone, and a carbonic acid diester. The hydroquinone polycarbonate copolymer product is then heated to a highest processing temperature of 5° C. to 20° C. above a maximum melting melt temperature for the hydroquinone copolymer product for a sufficient period of time to render the hydroquinone polycarbonate copolymer product transparent upon cooling to ambient temperature; and cooling the hydroquinone polycarbonate copolymer product to produce the transparent article. The method can also be used for producing transparent hydroquinone polycarbonate copolymers, which can be used for producing the transparent articles.
摘要翻译： 制备透明制品的方法包括在酯交换催化剂存在下熔融酯交换单体混合物以产生包含大于45摩尔％的衍生自对苯二酚的结构单元的氢醌聚碳酸酯共聚物产物的步骤。 单体混合物包含氢醌，至少一种除氢醌以外的芳族二羟基化合物和碳酸二酯。 然后将对苯二酚聚碳酸酯共聚物产物加热至高于氢醌共聚物产物的最大熔融熔融温度的5℃至20℃的最高加工温度足够的时间以使氢醌聚碳酸酯共聚物产品在冷却时透明 到环境温度; 并冷却氢醌聚碳酸酯共聚物产物以制备透明制品。 该方法也可用于生产可用于生产透明制品的透明氢醌聚碳酸酯共聚物。
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公开(公告)号：US5252620A
公开(公告)日：1993-10-12
申请号：US862521
申请日：1992-04-02
IPC分类号： C08J9/28
CPC分类号： C08J9/28 , C08J2201/05 , C08J2201/0544
摘要： Supercritical drying has distinct advantages in generating microcellular materials. The dimensional stability of the polymer is not affected on drying because the supercritical process does not go through the two phase path and therefore the effect of capillary forces is absent. This helps in maintaining the morphology of the final polymer structure and better control over cell size.Organic microcellular foams were prepared by polymerizing directly in a near-critical fluid and pursuing the supercritical drying in the same reactor. The critical variables are the choice of a diluent with a strong enough solvent power to stabilize the polymer matrix, but with a low enough critical temperature to permit critical point drying without damage to the polymer matrix.
摘要翻译： 超临界干燥在产生微孔材料方面具有明显的优势。 聚合物的尺寸稳定性不受干燥影响，因为超临界过程不经过两相路径，因此不存在毛细管作用。 这有助于维持最终聚合物结构的形态并更好地控制细胞的大小。 通过在近临界流体中直接聚合并在同一反应器中进行超临界干燥来制备有机微孔泡沫。 关键变量是选择具有足够强的溶剂能力的稀释剂以稳定聚合物基质，但具有足够低的临界温度以允许临界点干燥而不损坏聚合物基质。
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公开(公告)号：US5128382A
公开(公告)日：1992-07-07
申请号：US794124
申请日：1991-11-15
IPC分类号： C08J9/28
CPC分类号： C08J9/28 , C08J2201/05 , C08J2201/0544
摘要： Supercritical drying has distinct advantages in generating microcellular materials. The dimensional stability of the polymer is not affected on drying because the supercritical process does not go through the two phase path and therefore the effect of capillary forces is absent. This helps in maintaining the morphology of the final polymer structure and better control over cell size.Organic microcellular foams were prepared by polymerizing directly in a near-critical fluid and pursuing the supercritical drying in the same reactor. The critical variables are the choice of a diluent with a strong enough solvent power to stabilize the polymer matrix, but with a low enough critical temperature to permit critical point drying without damage to the polymer matrix.
摘要翻译： 超临界干燥在产生微孔材料方面具有明显的优势。 聚合物的尺寸稳定性不受干燥影响，因为超临界过程不经过两相路径，因此不存在毛细管作用。 这有助于维持最终聚合物结构的形态并更好地控制细胞的大小。 通过在近临界流体中直接聚合并在同一反应器中进行超临界干燥来制备有机微孔泡沫。 关键变量是选择具有足够强的溶剂能力的稀释剂以稳定聚合物基质，但具有足够低的临界温度以允许临界点干燥而不损坏聚合物基质。
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5.发明申请Methods for preparing transparent articles from biphenol polycarbonate copolymers 有权从双酚聚碳酸酯共聚物制备透明制品的方法公开(公告)号：US20070100119A1
公开(公告)日：2007-05-03
申请号：US11261265
申请日：2005-10-28
申请人： Subarna Shyamroy , Gokul Srinivasan
发明人： Subarna Shyamroy , Gokul Srinivasan
IPC分类号： C08G64/00
CPC分类号： C08G64/04 , C08G64/307
摘要： A method for producing a transparent article is provided. The method comprises melt transesterifying in the presence of a transesterification catalyst and a monomer mixture to produce a biphenol polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the biphenol by heating the monomer mixture to a temperature of greater than 340° C. to make the biphenol polycarbonate copolymer; and cooling the biphenol polycarbonate copolymer to produce the transparent article. The monomer mixture comprises the biphenol, at least one aromatic dihydroxy compound other than the biphenol, and an activated carbonic acid diester.
摘要翻译： 提供一种透明制品的制造方法。 该方法包括在酯交换催化剂和单体混合物的存在下进行熔融酯交换，以通过将单体混合物加热至大于340℃的温度来制备包含大于45摩尔％的来源于联苯酚的结构单元的双酚聚碳酸酯共聚物产物 制备双酚聚碳酸酯共聚物; 并冷却双酚聚碳酸酯共聚物以制备透明制品。 单体混合物包含联苯酚，至少一种除了联苯酚以外的芳族二羟基化合物和活性碳酸二酯。
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6.发明授权Methods for preparing transparent articles from biphenol polycarbonate copolymers 有权从双酚聚碳酸酯共聚物制备透明制品的方法公开(公告)号：US07348394B2
公开(公告)日：2008-03-25
申请号：US11261265
申请日：2005-10-28
申请人： Subarna Shyamroy , Gokul Srinivasan
发明人： Subarna Shyamroy , Gokul Srinivasan
IPC分类号： C08G64/00
CPC分类号： C08G64/04 , C08G64/307
摘要： A method for producing a transparent article is provided. The method comprises melt transesterifying in the presence of a transesterification catalyst and a monomer mixture to produce a biphenol polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the biphenol by heating the monomer mixture to a temperature of greater than 340° C. to make the biphenol polycarbonate copolymer; and cooling the biphenol polycarbonate copolymer to produce the transparent article. The monomer mixture comprises the biphenol, at least one aromatic dihydroxy compound other than the biphenol, and an activated carbonic acid diester.
摘要翻译： 提供一种透明制品的制造方法。 该方法包括在酯交换催化剂和单体混合物的存在下进行熔融酯交换，以通过将单体混合物加热至大于340℃的温度来制备包含大于45摩尔％的来源于联苯酚的结构单元的双酚聚碳酸酯共聚物产物 制备双酚聚碳酸酯共聚物; 并冷却双酚聚碳酸酯共聚物以制备透明制品。 单体混合物包含联苯酚，至少一种除了联苯酚以外的芳族二羟基化合物和活性碳酸二酯。
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