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公开(公告)号：EP1358247A2
公开(公告)日：2003-11-05
申请号：EP01991250.0
申请日：2001-12-14
IPC分类号： C08G64/30 , C08K5/3492
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts which are derivatized pyridyl triazinyl pyridyl macromolecules with the general formula Ax+y[(Triazinyl-Pyridyl)B¿y-?x], where A is certain alkali metals, B contains a charge balancing sulfonate, carboxylate, or phosphonate group. We have found that his new class of catalysts provide excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fries product, normally associated with the melt polycarbonate process.
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公开(公告)号：EP1399498B1
公开(公告)日：2006-06-21
申请号：EP01992153.5
申请日：2001-12-17
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts which are salts of certain phenanthroline compounds. We have found that this new class of catalysts provide excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fries product, normally associated with the melt polycarbonate process.
摘要翻译： 本发明提供了一种制备聚碳酸酯的方法，该方法使用了缩合催化剂，这些催化剂是某些菲咯啉化合物的盐。 我们已经发现，这类新型催化剂为由碳酸二苯酯和双酚A的熔融聚合反应制备双酚A聚碳酸酯提供了优异的聚合速率。此外，发现本发明的催化剂在实质上降低 分支副反应，即形成通常与熔融聚碳酸酯方法相关的Fries产品。
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公开(公告)号：EP1360221A1
公开(公告)日：2003-11-12
申请号：EP01948788.3
申请日：2001-06-27
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts which are salts of macrocyclic polypyrroles with the general formula Ax+y [(Porphine - Tm)B¿y?-x], where A is certain alkali metals, B contains a charge balancing sulfonate, carboxylate, or phosphonate group and Tm is a transition metal are useful as polycarbonate melt polymerization catalysts. We have found that this new class of catalysts provide excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fries product, normally associated with the melt polycarbonate process.
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公开(公告)号：EP1353971A2
公开(公告)日：2003-10-22
申请号：EP01994331.5
申请日：2001-12-28
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts of the formula Cs+An, wherein An represents anions such as CH3 SO3, NH2SO3, C2H2O4, BH4, B(C6H5CH3)4, and CH3C3C6H4SO¿3. We have found that this new class of catalysts provides excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fried product, Normally associated with the melt polycarbonate process.
摘要翻译： 本发明提供了一种制备聚碳酸酯的方法，该方法使用式Cs + An的缩聚催化剂，其中An代表阴离子如CH3SO3，NH2SO3，C2H2O4，BH4，B（C6H5CH3）4和CH3C3C6H4SO3。 我们发现这种新类型的催化剂对于由碳酸二苯基酯和双酚A的熔融聚合制备双酚A聚碳酸酯提供了优异的聚合速率。此外，发现本发明的催化剂具有非常高的选择性，可以显着降低 分支副反应，即形成油炸产物，通常与熔融聚碳酸酯方法有关。
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公开(公告)号：EP1360221B1
公开(公告)日：2007-12-12
申请号：EP01948788.3
申请日：2001-06-27
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts which are salts of macrocyclic polypyrroles with the general formula Ax [(Porphine - Tm)By ], where A is certain alkali metals, B contains a charge balancing sulfonate, carboxylate, or phosphonate group and Tm is a transition metal are useful as polycarbonate melt polymerization catalysts. We have found that this new class of catalysts provide excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fries product, normally associated with the melt polycarbonate process.
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公开(公告)号：EP1353971B1
公开(公告)日：2005-05-11
申请号：EP01994331.5
申请日：2001-12-28
IPC分类号： C08G64/30
CPC分类号： C08G64/307
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公开(公告)号：EP1689803A1
公开(公告)日：2006-08-16
申请号：EP03789937.4
申请日：2003-11-21
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： The present invention relates to a synthetic method comprising contacting at least one diaryl carbonate with one or more dihydroxy aromatic compounds in the presence of a transesterification catalyst under melt polymerization conditions to afford a product polycarbonate. The transesterifcation catalysts used according to the method of the present invention are polyhydropolyborates in combination with tetraalkylammonium or tetraalkylphosphonium compounds which serve as co-catalysts. The transesterification catalysts employed according to the method of the present invention provide polycarbonates having reduced levels of Fries rearrangement product relative to conventionally employed catalysts such as sodium hydroxide in combination with tetramethylammonium hydroxide co-catalyst.
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公开(公告)号：EP1358246A2
公开(公告)日：2003-11-05
申请号：EP01986539.3
申请日：2001-12-18
IPC分类号： C08G64/00
CPC分类号： C08G64/307
摘要： This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysta of the formula Ax+MF6-x, wherein A is an alkali metal or alkaline earth cation; M is a transition metal of group IVA or VA, or M is a p-block metal of group IIIB, IVB or VB; and x is 1, 2, or 3. We have found that this new class of catalysts provide excellent polmerization rates for hte prepartion of Bisphenol A polycarbonate form teh metl polmerization rates for the preparation of Bisphenol A polycarbonate form the melt polymerization of disphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducingt the level of branching side reation, i.e., formation of Fries product, normally assocatiated with the melt polycarbonate process.
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9.发明公开METHOD FOR DIRECT MEASUREMENT OF POLYCARBONATE COMPOSITION BY FLUORESCENCE 审中-公开程序对通过荧光组合物A聚碳酸酯部直接测量
公开(公告)号：EP1218726A1
公开(公告)日：2002-07-03
申请号：EP00965189.4
申请日：2000-09-20
IPC分类号： G01N21/64
CPC分类号： G01N21/64 , G01N2021/6417 , G01N2021/6484 , G01N2201/0826
摘要： The present invention provides a method for directly determining the concentration of a target species, such as Fries product, in a composition comprising aromatic carbonate chain units. In an exemplary embodiment, the method includes the steps of irradiating a portion of the composition with electromagnetic radiation at an excitation wavelength sufficient to cause the target species to emit a fluorescence spectrum; detecting at least a portion of the fluorescence spectrum; and determining the concentration of the target species form the fluorescence spectrum. In addition to detecting Fries product in formed polycarbonate materials, the method can also be utilized to directly determine the concentration of a target species in parallel polycarbonate reactor systems.
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公开(公告)号：EP1685394A2
公开(公告)日：2006-08-02
申请号：EP04794773.4
申请日：2004-10-12
发明人： SANDVIK, Peter, Micah , TILAK, Vinayak , TUCKER, Jesse , WEAVER, Stanton, Earl , SHADDOCK, David, Mulford , MALE, Jonathan, Lloyd , LEMMON, John, Patrick , WOODMANSEE, Mark, Allen , MANIVANNAN, Venkatesan , HAITKO, Deborah, Ann
IPC分类号： G01N27/414
CPC分类号： G01N27/4141 , G01N33/0037 , Y02A50/245
摘要： A gas sensor device including a semiconductor substrate; one or more catalytic gate-electrodes deposited on a surface of the semiconductor substrate; one or more ohmic contacts deposited on the surface of the semiconductor substrate and a passivation layer deposited on at least a portion of the surface; wherein the semiconductor substrate includes a material selected from the group consisting of silicon carbide, diamond, Group III nitrides, alloys of Group III nitrides, zinc oxide, and any combinations thereof.
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