Procatalyst Composition with Alkoxyalkyl 2-Propenoate Internal Electron Donor and Polymer from Same
    63.
    发明申请
    Procatalyst Composition with Alkoxyalkyl 2-Propenoate Internal Electron Donor and Polymer from Same 有权
    主催化剂组合物与2-丙烯酸烷氧基烷基酯内部电子供体及其相同的聚合物

    公开(公告)号:US20140046009A1

    公开(公告)日:2014-02-13

    申请号:US13996300

    申请日:2011-12-02

    IPC分类号: C08F4/76 C08F4/52

    摘要: Disclosed herein are catalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present catalyst compositions contain an internal electron donor of an alkoxyalkyl 2-propenoate and optionally a mixed external electron donor. The present catalyst compositions improve catalyst selectivity and polymer stiffness. Polypropylene homopolymer produced from the present catalyst composition has a xylene solubles content less than 4 wt % and a TMF greater than 172.0° C.

    摘要翻译: 本文公开了催化剂组合物和聚合物,即由其制备的基于丙烯的聚合物。 本催化剂组合物含有2-丙烯酸烷氧基烷基酯和任选的混合的外电子给体的内电子给体。 本催化剂组合物改善催化剂选择性和聚合物刚度。 由本催化剂组合物制备的聚丙烯均聚物的二甲苯可溶物含量小于4wt%,TMF大于172.0℃。

    QC-LDPC code decoder and corresponding decoding method
    69.
    发明授权
    QC-LDPC code decoder and corresponding decoding method 失效
    QC-LDPC码解码器及相应的解码方法

    公开(公告)号:US08321747B2

    公开(公告)日:2012-11-27

    申请号:US12669277

    申请日:2008-06-19

    IPC分类号: H03M13/00

    CPC分类号: H03M13/1137 H03M13/1105

    摘要: An efficient general QC-LDPC code decoder includes a general-purpose processor for distributing the storage storage space of the data memory block, and establishing an index for data addressing; a data memory block for storing the information used during decoding; a hardware accelerator for conducting part or all of the information processing operations including parity check, check node updating and variable node updating. A corresponding QC-LDPC code decoding method includes initializing the variable node information and performing parity check on the check matrix row block by row block; updating the check node row block by row block and updating the variable node column block by column block if any check equation is not met.

    摘要翻译: 有效的一般QC-LDPC码解码器包括用于分配数据存储块的存储空间的通用处理器,以及建立用于数据寻址的索引; 用于存储在解码期间使用的信息的数据存储块; 用于进行部分或全部信息处理操作的硬件加速器,包括奇偶校验,校验节点更新和可变节点更新。 对应的QC-LDPC码解码方法包括初始化可变节点信息,并按行块对校验矩阵行进行奇偶校验; 按行块更新校验节点行块,并且如果不满足任何检验方程,则按列块更新变量节点列。

    Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method
    70.
    发明授权
    Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method 有权
    具有替代1,2-亚苯基芳族二酯内给体的助催化剂组合物及方法

    公开(公告)号:US08288585B2

    公开(公告)日:2012-10-16

    申请号:US12650834

    申请日:2009-12-31

    IPC分类号: C07C309/00

    摘要: Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution.

    摘要翻译: 公开了具有内电子给体的前催化剂组合物,其包括取代的亚苯基芳族二酯和任选的电子给体组分。 包含本发明的前催化剂组合物的齐格勒 - 纳塔催化剂组合物表现出高活性并产生具有宽分子量分布的丙烯基烯烃。