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    PROCESS FOR THE PRODUCTION OF BRANCHED MELT POLYCARBONATE BY LATE ADDITION OF FRIES-INDUCING CATALYST
    3.
    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

    申请人： GENERAL ELECTRIC COMPANY

    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.

    PROCESS FOR PREPARING BRANCHED AROMATIC POLYCARBONATES
    6.
    发明授权
    PROCESS FOR PREPARING BRANCHED AROMATIC POLYCARBONATES 有权
    用于生产支化的芳族聚碳酸酯

    公开(公告)号：EP1458786B1

    公开(公告)日：2006-05-17

    申请号：EP02773963.0

    申请日：2002-10-30

    申请人： GENERAL ELECTRIC COMPANY

    发明人： BRACK, Hans, Peter ,  KARLIK, Dennis ,  VERHOOGT, Hendrik ,  GOOSSENS, Johannes, Martinus, Dina

    IPC分类号： C08G64/14 ,  C08G64/30

    CPC分类号： C08G64/307 ,  C08G64/14

    摘要： A process for the production of a branched aromatic polycarbonate that includes adding a branching agent to a polycarbonate oligomer, and producing a branched aromatic polycarbonate having a melt index ratio greater than an aromatic polycarbonate produced from the polycarbonate oligomer without the addition of the branching agent. The branching agent has the formula (I): AGy wherein A is a C1-20 polymethylene, C2-20 alkylene or alkylidene, C5-36 cycloalkylene or cycloalkylidene, C6-36 arylene or alkylarylene, or C6-36 arylalkylene, wherein G is a monovalent C6-C30 hydrocarbon having at least one hydroxyl group bonded directly to an aromatic or cycloaliphatic ring and y is an integer greater than 2, and wherein each G may be the same or different.

    PROCESS FOR PREPARING BRANCHED AROMATIC POLYCARBONATES
    8.
    发明公开
    PROCESS FOR PREPARING BRANCHED AROMATIC POLYCARBONATES 有权
    用于生产支化的芳族聚碳酸酯

    公开(公告)号：EP1458786A1

    公开(公告)日：2004-09-22

    申请号：EP02773963.0

    申请日：2002-10-30

    申请人： GENERAL ELECTRIC COMPANY

    发明人： BRACK, Hans, Peter ,  KARLIK, Dennis ,  VERHOOGT, Hendrik ,  GOOSSENS, Johannes, Martinus, Dina

    IPC分类号： C08G64/14 ,  C08G64/30

    CPC分类号： C08G64/307 ,  C08G64/14

    摘要： A process for the production of a branched aromatic polycarbonate that includes adding a branching agent to a polycarbonate oligomer, and producing a branched aromatic polycarbonate having a melt index ratio greater than an aromatic polycarbonate produced from the polycarbonate oligomer without the addition of the branching agent. The branching agent has the formula (I): AGy wherein A is a C1-20 polymethylene, C2-20 alkylene or alkylidene, C5-36 cycloalkylene or cycloalkylidene, C6-36 arylene or alkylarylene, or C6-36 arylalkylene, wherein G is a monovalent C6-C30 hydrocarbon having at least one hydroxyl group bonded directly to an aromatic or cycloaliphatic ring and y is an integer greater than 2, and wherein each G may be the same or different.

    PROCESS FOR THE PRODUCTION OF POLYCARBONATE
    9.
    发明公开
    PROCESS FOR THE PRODUCTION OF POLYCARBONATE 有权
    生产聚碳酸酯的方法

    公开(公告)号：EP1360220A2

    公开(公告)日：2003-11-12

    申请号：EP01986543.5

    申请日：2001-12-26

    申请人： GENERAL ELECTRIC COMPANY

    发明人： BRACK, Hans, Peter ,  CELLA, James, Anthony ,  KARLIK, Dennis ,  PRADA, Lina

    IPC分类号： C08G64/14 ,  C08G64/30

    CPC分类号： C08G64/14 ,  C08G64/307

    摘要： A process for the production of polycarbonate having increased end-cap levels, the process comprising adding a terminal blocking agent of formula (I), wherein R1 is a propoxy or butoxy and R2 is selected from the group consisting of C1-C30 alkyl, C1-C30 alkoxy, C6-C30 aryl, C7-C30 aralkyl, and C6-C30 aryloxy.

    摘要翻译： 一种生产具有增加的封端水平的聚碳酸酯的方法，该方法包括加入式（I）的封端剂，其中R 1是丙氧基或丁氧基，R 2选自C 1 -C 30烷基，C 1 -C 30烷基 -C30烷氧基，C6-C30芳基，C7-C30芳烷基和C6-C30芳氧基。

    PROCESS FOR THE PRODUCTION OF POLYCARBONATE
    10.
    发明公开
    PROCESS FOR THE PRODUCTION OF POLYCARBONATE 有权
    生产聚碳酸酯的方法

    公开(公告)号：EP1348003A1

    公开(公告)日：2003-10-01

    申请号：EP01997100.1

    申请日：2001-12-26

    申请人： GENERAL ELECTRIC COMPANY

    发明人： BRACK, Hans, Peter ,  CELLA, James, Anthony ,  HOEKS, Theodorus, Lambertus ,  KARLIK, Dennis ,  PRADA, Lina

    IPC分类号： C08G64/14 ,  C08G64/30

    CPC分类号： C08G64/14 ,  C08G64/307

    摘要： A process for the production of polycarbonate having increased end-cap levels and controlled molecular weight build-up, the process comprising adding a terminal blocking agent of the formula: Formula (I), wherein R1 is a methoxy, ethoxy, propoxy, butoxy, phenyl, phenoxy, benzyl or benzoxy; and R2 is a C1-C30 alkyl group, C1-C30 alkoxy group, C6-C30 aryl group, C6-C30 aryloxy group, C7-C30 alkyl, or C6-C30 arylalkyloxy group.

    摘要翻译： 一种生产具有增加的封端水平和控制的分子量积聚的聚碳酸酯的方法，该方法包括加入下式的封端剂：式（I）其中R1是甲氧基，乙氧基，丙氧基，丁氧基， 苯基，苯氧基，苄基或苯甲酰基; R2为C1-C30烷基，C1-C30烷氧基，C6-C30芳基，C6-C30芳氧基，C7-C30烷基或C6-C30芳烷基氧基。