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    Stabilization of highly heat distortion resistant polycarbonates
    2.
    发明授权
    Stabilization of highly heat distortion resistant polycarbonates 失效
    高耐热变形聚碳酸酯的稳定化

    公开(公告)号：US5194467A

    公开(公告)日：1993-03-16

    申请号：US816918

    申请日：1992-01-03

    申请人： Helmut-Martin Meier ,  Uwe Westeppe ,  Rolf Dhein ,  Dieter Freitag ,  Martin Wandel ,  Axel Sandquist

    发明人： Helmut-Martin Meier ,  Uwe Westeppe ,  Rolf Dhein ,  Dieter Freitag ,  Martin Wandel ,  Axel Sandquist

    IPC分类号： C08K5/5435

    CPC分类号： C08K5/5435

    摘要： Highly heat distortion resistant moulding compositions are disclosed comprising an aromatic polycarbonate having molecular weights Mw (weight average) of a least 10,000, containing bifunctional carbonate structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.12 -aralkyl,m stands for an integer from 4 to 7,R.sup.3 and R.sup.4, which are selected individually for each X, denote, independently of one another, hydrogen or C.sub.1 -C.sub.6 -alkyl, andX denotes carbonunder the condition that R.sup.3 and R.sup.4 are both alkyl on at least one X atom andas the only thermo stabilizer, from 0.001 to 1% by weight of a siloxane corresponding to formula (II) ##STR2## wherein R and R' denote, independently of one another, C.sub.1 -C.sub.4 -alkyl or -aryl andx and y stand for the numbers 1,2 or 3 and x+y always add up to 4.

    摘要翻译： 公开了耐热变形性模塑组合物，其包含具有至少10,000的分子量Mw（重均分子）的芳族聚碳酸酯，其含有对应于式（Ia）的双官能碳酸酯结构单元，其中R1和R2独立地表示 另一个是氢，卤素，C 1 -C 8 - 烷基，C 5 -C 6 - 环烷基，C 6 -C 10 - 芳基或C 7 -C 12 - 芳烷基，m代表4-7的整数，R3和R4分别为 每个X彼此独立地表示氢或C 1 -C 6 - 烷基，X表示碳，在R 3和R 4均为至少一个X原子上为烷基且仅为热稳定剂的情况下，为0.001至1％ 重量的对应于式（II）的硅氧烷（II）其中R和R'彼此独立地表示C 1 -C 4 - 烷基或 - 芳基，x和y表示数字1,2或3 并且x + y总是最多为4。

    Stabilization of polycarbonates having high heat distortion temperatures
    5.
    发明授权
    Stabilization of polycarbonates having high heat distortion temperatures 失效
    具有高热变形温度的聚碳酸酯的稳定化

    公开(公告)号：US5668204A

    公开(公告)日：1997-09-16

    申请号：US853670

    申请日：1992-03-19

    申请人： Helmut-Martin Meier ,  Uwe Westeppe ,  Rolf Dhein ,  Dieter Freitag ,  Dieter Constant

    发明人： Helmut-Martin Meier ,  Uwe Westeppe ,  Rolf Dhein ,  Dieter Freitag ,  Dieter Constant

    IPC分类号： C08K3/00 ,  C08K5/541 ,  C08K5/5419 ,  C08K5/549 ,  C08L69/00 ,  C08J5/10 ,  C08K5/54

    CPC分类号： C08K5/541 ,  C08K5/549 ,  C08L69/00

    摘要： A thermoplastic molding composition containing an aromatic polycarbonate and a particular siloxane compound is disclosed. The composition which is based on a polycarbonate resin having bifunctional structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, or C.sub.7 -C.sub.12 -aralkyl,m is an integer from 4 to 7,R.sup.3 and R.sup.4 selected individually for each X, denote, independently of one another, hydrogen or C.sub.1 -C.sub.6 -alkyl, andX stands for carbon,under the condition that R.sup.3 and R.sup.4 are both alkyl groups on at least one X atom, andcontains from 0.001 to 1% by weight of at least one siloxane corresponding to formula (II) ##STR2## wherein R denotes hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.6 -C.sub.10 -aryl or C.sub.1 -C.sub.10 -alkoxy,B denotes R or A,r, s and t independently denote an integer from 0 to 200, or to formula (III) ##STR3## wherein R has the same meaning as in formula (II)u denotes an integer from 1 to 20, and v and w denote an integer from 0 to 20,and wherein the sum u+v+w is greater than 3, andA denotes a C.sub.1 -C.sub.20 -alkyl group or a C.sub.6 -C.sub.10 -aryl group is characterized in its improved heat distortion temperature and good aging properties.

    摘要翻译： 公开了一种含有芳族聚碳酸酯和特定的硅氧烷化合物的热塑性模塑组合物。 基于具有对应于式（Ia）的双功能结构单元的聚碳酸酯树脂的组合物（Ia）其中R 1和R 2彼此独立地表示氢，卤素，C 1 -C 8烷基，C 5 -C 6 - 环烷基 ，C 6 -C 10 - 芳基或C 7 -C 12 - 芳烷基，m是4至7的整数，每个X分别选择的R 3和R 4彼此独立地表示氢或C 1 -C 6烷基，X表示 对于碳，在R3和R4均为至少一个X原子上的烷基的情况下，并且含有0.001至1重量％的至少一种对应于式（II）的硅氧烷（II），其中R表示 氢，C 1 -C 20 - 烷基，C 6 -C 10 - 芳基或C 1 -C 10 - 烷氧基，B表示R或A，r，s和t独立地表示0至200的整数，或式（III） III）其中R具有与式（II）中相同的含义，u表示1至20的整数，v和w表示0至20的整数，其中和u + v + w大于3，并且 A表示C1-C 20烷基或C6-C10-芳基的特征在于其改进的热变形温度和良好的老化性能。