Mold releasel agents for poly(ester) carbonates
    4.
    发明授权
    Mold releasel agents for poly(ester) carbonates 失效
    用于聚(酯)碳酸酯的脱模剂

    公开(公告)号:US5036151A

    公开(公告)日:1991-07-30

    申请号:US493269

    申请日:1990-03-14

    CPC分类号: B29C33/62 C07D251/34

    摘要: The invention relates to trimerized aliphatic isocyanates produced by special processes, to their use as mold release agents in thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyestercarbonates and/or thermoplastic aromatic polyesters, optionally using standard additives, to the readily demoldable molding compounds thus obtained on the basis of the thermoplastic polycarbonates, polyestercarbonates and/or polyesters and to processes for the production of these readily demoldable molding compounds.

    摘要翻译: 本发明涉及通过特殊方法生产的三聚脂肪族异氰酸酯,其在热塑性芳族聚碳酸酯和/或热塑性芳族聚酯碳酸酯和/或热塑性芳族聚酯中的脱模剂(任选使用标准添加剂)用于如此获得的容易脱模的模塑料 热塑性聚碳酸酯,聚酯碳酸酯和/或聚酯的基础,以及用于生产这些易脱模的模塑料的方法。

    Stabilization of polycarbonates having high heat distortion temperatures
    9.
    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

    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。