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公开(公告)号：EP1358246B1
公开(公告)日：2006-07-12
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 , 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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公开(公告)号：EP1358247B1
公开(公告)日：2006-06-21
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 [(Triazinyl-Pyridyl)By- ], 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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13.发明公开PROCESS FOR THE PRODUCTION OF BRANCHED MELT POLYCARBONATE BY LATE ADDITION OF FRIES-INDUCING CATALYST 有权用于生产支化熔融聚碳酸酯通过FRIES诱导催化剂后加
公开(公告)号：EP1458787A1
公开(公告)日：2004-09-22
申请号：EP02789615.8
申请日：2002-11-12
发明人： KARLIK, Dennis , BRACK, Hans, Peter , VERHOOGT, Hendrik , LEMMON, John, Patrick , KAMPS, Jan, Henk , SEDEREL, Willem, Lodewijk , GOOSSENS, Johannes, Martinus, Dina
IPC分类号： C08G64/30
CPC分类号： C08G64/307
摘要： The invention relates to a method for the production of a branched polycarbonate composition, having increased melt strength, by late addition of branch-inducing catalysts to the polycarbonate oligomer in a melt polycondensation process. Surprisingly, it has been found that by adding branch-inducing catalysts, such as alkali metal compounds and/ or alkaline earth metal compounds, to the melt polycarbonate oligomer at a later stage of the melt polycondensation process, preferably after the oligomer has reached an average molecular weight of between about 3,000 and 30,000 g/mole, a unique branched polycarbonate composition is formed that has improved properties. It is believed that the addition of the branch-inducing catalysts at the later stages of the process produces a branched polycarbonate composition having longer chains between the branching points, and thus a new composition is produced. The invention also relates to various applications of the branched polycarbonate composition.
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公开(公告)号：EP1399498A2
公开(公告)日：2004-03-24
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.
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