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51. 发明申请

US20050049393A1 METHOD OF SEPARATING A POLYMER FROM A SOLVENT 失效
公开(公告)号：US20050049393A1
公开(公告)日：2005-03-03
申请号：US10648524
申请日：2003-08-26
申请人： Norberto Silvi , Mark Giammattei , Jan Keulen , David Woodruff , Paul Wilson , Paul Buckley , Norman Johnson
发明人： Norberto Silvi , Mark Giammattei , Jan Keulen , David Woodruff , Paul Wilson , Paul Buckley , Norman Johnson
IPC分类号： C08J3/12 , B29C47/00 , B29C47/76 , C08F6/10 , C08F6/12 , C08G63/89 , C08G65/46 , C08G73/10 , C08G75/20 , C08G77/34 , C08J3/215 , C08G2/00
CPC分类号： C08G65/46 , B29C47/0009 , B29C47/0871 , B29C47/767 , B82Y30/00 , C08F6/10 , C08F6/12 , C08G63/89 , C08G73/1053 , C08G75/20 , C08G77/34
摘要： A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. The one-step method is highly efficient having very high throughput rates while at the same time providing a polymer product containing low levels of residual solvent.

52. 发明申请

US20050049333A1 Methods of preparing a polymeric material 有权
标题翻译：制备聚合物材料的方法
公开(公告)号：US20050049333A1
公开(公告)日：2005-03-03
申请号：US10648647
申请日：2003-08-26
申请人： Paul Buckley , Jiawen Dong , Mark Giammattei , Hua Guo , Norberto Silvi
发明人： Paul Buckley , Jiawen Dong , Mark Giammattei , Hua Guo , Norberto Silvi
IPC分类号： C08G2/00 , C08G65/46 , C08K3/00 , C08L25/06 , C08L71/12
CPC分类号： C08G65/46 , C08L25/06 , C08L71/12 , C08L2666/22
摘要： A method is disclosed to prepare a polymeric material by filtering solutions of poly(arylene ether) and/or poly(alkenyl aromatic) through one or more filtration systems to provide a material having reduced levels of particulate impurities. The polymeric material prepared is suitable for use in data storage media applications.
摘要翻译：公开了一种通过一个或多个过滤系统过滤聚（亚芳基醚）和/或聚（链烯基芳族化合物）的溶液以制备具有降低的颗粒杂质含量的材料制备聚合材料的方法。所制备的聚合物材料适用于数据存储介质应用。

53. 发明授权

US06790929B2 Method for making an aromatic polycarbonate 有权
标题翻译：制备芳族聚碳酸酯的方法
公开(公告)号：US06790929B2
公开(公告)日：2004-09-14
申请号：US10389009
申请日：2003-03-17
申请人： Norberto Silvi , Mark Howard Giammattei , Patrick Joseph McCloskey , Alberto Nisoli , James Day , Narayan Ramesh , Paul Michael Smigelski, Jr. , Paul Russell Wilson
发明人： Norberto Silvi , Mark Howard Giammattei , Patrick Joseph McCloskey , Alberto Nisoli , James Day , Narayan Ramesh , Paul Michael Smigelski, Jr. , Paul Russell Wilson
IPC分类号： C08G6400
CPC分类号： B29C47/0004 , B29C47/0009 , B29C47/60 , B29C47/76 , B29C47/767 , B29C67/246 , B29K2069/00 , C08G64/081 , C08G64/14 , C08G64/205 , C08G64/307
摘要： This invention relates to an extrusion method preparing polycarbonates from a solution of an oligomeric polycarbonate. A mixture of bis(methyl salicyl)carbonate (BMSC), BPA and a transesterification catalyst are first equilibrated at moderate temperatures to provide a solution of polycarbonate oligomer in methyl salicylate. The solution is then fed to a devolatilizing extruder, where the polymerization reaction is completed and the methyl salicylate solvent is removed. The solution comprising the oligomeric polycarbonate can also be pre-heated under pressure to a temperature above the boiling point of methyl salicylate and subsequently fed to a devolatilizing extruder equipped for rapid flashing off the solvent. The method provides polycarbonate with greater efficiency than the corresponding process in which unreacted monomers are fed to the extruder. Additionally, the method of the invention does not require the isolation of a precursor polycarbonate comprising ester-substituted phenoxy terminal groups.
摘要翻译：本发明涉及从低聚聚碳酸酯溶液制备聚碳酸酯的挤压方法。首先在中等温度下平衡双（甲基水杨酸）碳酸酯（BMSC），BPA和酯交换催化剂的混合物，以提供聚碳酸酯低聚物在水杨酸甲酯中的溶液。然后将溶液进料到脱挥发分挤出机中，其中聚合反应完成并除去水杨酸甲酯溶剂。包含低聚物聚碳酸酯的溶液也可以在压力下预加热到高于水杨酸甲酯沸点的温度，随后进料到脱挥发分的挤出机中，以便迅速地从溶剂中闪蒸。该方法提供聚碳酸酯比未反应的单体进料到挤出机的相应方法具有更高的效率。另外，本发明的方法不需要分离包含酯取代的苯氧基末端基团的前体聚碳酸酯。

54. 发明授权

US06572253B2 System to compound silicone compositions 失效
公开(公告)号：US06572253B2
公开(公告)日：2003-06-03
申请号：US10084783
申请日：2002-02-28
申请人： Norberto Silvi , Mark Howard Giammattei
发明人： Norberto Silvi , Mark Howard Giammattei
IPC分类号： B29B738
CPC分类号： B29B7/7466 , B29B7/007 , B29B7/426 , B29B7/90 , B29C47/0009 , B29C47/50 , B29K2083/00
摘要： A method and system are provided that efficiently compound high levels of inorganic filler, processing fluid and silicone polymer at a commercial rate into homogeneous filled and devolatilized silicone compositions. In the method, filled silicone compositions are compounded by compounding a filler, processing fluid and silicone polymer in a first compounding apparatus to produce a first dispersed composition and simultaneously compounding a filler, processing fluid and silicone polymer in a second compounding apparatus that shares a common extruder shaft with the first compounding apparatus to produce a second dispersed composition. The system comprises a first compounding apparatus and a sequential second compounding apparatus that shares a common shaft with the first compounding apparatus. An extruder transition section of the system includes an enclosed discharge chamber defined by a first sectioning wall, a second sectioning wall and a contoured lower wall that transitions toward a discharge port and a shaft extends through the first sectioning wall, traverses the chamber and extends through the second sectioning wall.

55. 发明授权

US06506871B1 Extrusion method for making polycarbonate 有权
标题翻译：制造聚碳酸酯的挤出方法
公开(公告)号：US06506871B1
公开(公告)日：2003-01-14
申请号：US10167903
申请日：2002-06-12
申请人： Norberto Silvi , Patrick Joseph McCloskey , James Day , Mark Howard Giammattei
发明人： Norberto Silvi , Patrick Joseph McCloskey , James Day , Mark Howard Giammattei
IPC分类号： C08G6400
CPC分类号： C08G64/307
摘要： Extrusion of a mixture of an ester-substituted diaryl carbonate, such as bis(methyl salicyl) carbonate, a dihydroxy aromatic compound such as bisphenol A and a transesterification catalyst such as tetrabutylphosphonium acetate (TBPA) affords polycarbonate having a weight average molecular weight of greater than 20,000 daltons. The extruder is equipped with one or more vacuum vents to remove by-product ester-substituted phenol. Similarly, a precursor polycarbonate having ester-substituted phenoxy endgroups, for example methyl salicyl endgroups, when subjected to extrusion affords a polycarbonate having a significantly increased molecular weight relative to the precursor polycarbonate. The reaction to form a higher molecular weight polycarbonate may be catalyzed by residual transesterification catalyst present in the precursor polycarbonate, or by a combination of any residual catalyst and an additional catalyst such as TBPA introduced in the extrusion step. Fries rearrangement products are not observed in the product polycarbonates.
摘要翻译：碳酸二（甲基水杨基）酯，二羟基芳族化合物如双酚A和酯交换催化剂如四丁基鏻乙酸酯（TBPA）的酯取代的二芳基碳酸酯的混合物的挤出得到重均分子量更大的聚碳酸酯超过20,000道尔顿。挤出机配备有一个或多个真空通风口以除去副产物酯取代的苯酚。类似地，具有酯取代的苯氧基端基的前体聚碳酸酯，例如甲基水杨基端基，当进行挤出时，得到相对于前体聚碳酸酯具有显着增加的分子量的聚碳酸酯。形成较高分子量聚碳酸酯的反应可以通过存在于前体聚碳酸酯中的残留酯交换催化剂，或者通过任何残余催化剂和另外的催化剂如在挤出步骤中引入的TBPA的组合来催化。在产品聚碳酸酯中没有观察到薯条重排产物。

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