LTMC polymerization of unsaturated monomers
    1.
    发明授权
    LTMC polymerization of unsaturated monomers 有权
    不饱和单体的LTMC聚合

    公开(公告)号:US06903169B1

    公开(公告)日:2005-06-07

    申请号:US10748582

    申请日:2003-12-30

    摘要: A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations. The LTMC polymerization provides the polymer with improved properties such as no free radical residue and narrow molecular weight distribution.

    摘要翻译: 公开了聚合不饱和单体的方法。 该方法包括在后期过渡金属催化剂(LTMC)的存在下聚合多种不饱和单体,这些单体通常是通过自由基聚合制成的。 LTMC聚合为聚合物提供了改进的性能,例如没有自由基残基和窄分子量分布。

    LTMC polymerization of unsaturated monomers
    3.
    发明授权
    LTMC polymerization of unsaturated monomers 有权
    不饱和单体的LTMC聚合

    公开(公告)号:US07473746B2

    公开(公告)日:2009-01-06

    申请号:US11064989

    申请日:2005-02-24

    IPC分类号: C08F4/44 C08F20/06

    摘要: A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations. The LTMC polymerization provides the polymer with improved properties such as no free radical residue and narrow molecular weight distribution.

    摘要翻译: 公开了聚合不饱和单体的方法。 该方法包括在后期过渡金属催化剂(LTMC)的存在下聚合多种不饱和单体,这些单体通常是通过自由基聚合制成的。 LTMC聚合为聚合物提供了改进的性能,例如没有自由基残基和窄分子量分布。

    LTMC POLYMERIZATION OF UNSATURATED MONOMERS
    5.
    发明申请
    LTMC POLYMERIZATION OF UNSATURATED MONOMERS 有权
    不饱和单体的LTMC聚合

    公开(公告)号:US20050143537A1

    公开(公告)日:2005-06-30

    申请号:US10748582

    申请日:2003-12-30

    摘要: A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations. The LTMC polymerization provides the polymer with improved properties such as no free radical residue and narrow molecular weight distribution.

    摘要翻译: 公开了聚合不饱和单体的方法。 该方法包括在后期过渡金属催化剂(LTMC)的存在下聚合多种不饱和单体,这些单体通常是通过自由基聚合制成的。 LTMC聚合为聚合物提供了改进的性能,例如没有自由基残基和窄分子量分布。

    Single-site catalysts for olefin polymerization
    6.
    发明授权
    Single-site catalysts for olefin polymerization 有权
    用于烯烃聚合的单中心催化剂

    公开(公告)号:US06908973B2

    公开(公告)日:2005-06-21

    申请号:US10664555

    申请日:2003-09-18

    申请人: Jia-Chu Liu

    发明人: Jia-Chu Liu

    摘要: A method for making single-site catalysts useful for olefin polymerization is disclosed. A nitrogen-functional heterocycle is first deprotonated with an alkyllithium compound, followed by reaction of this anionic ligand precursor with about 0.5 equivalents of a Group 4 transition metal tetrahalide in a hydrocarbon solvent at a temperature greater than about 10° C. to give an organometallic complex-containing mixture. When combined with exceptionally low levels of an activator (e.g., methyl alumoxane), the mixture actively polymerizes olefins to give polymers with a favorable balance of physical properties, including low density and narrow molecular weight distribution.

    摘要翻译: 公开了制备用于烯烃聚合的单中心催化剂的方法。 首先用烷基锂化合物将氮官能杂环脱质子化,然后在大约10℃的温度下,在烃溶剂中使该阴离子配体前体与约0.5当量的第4族过渡金属四卤化物反应,得到有机金属 含复合物的混合物。 当与异常低水平的活化剂(例如甲基铝氧烷)组合时,混合物主动聚合烯烃以产生具有良好平衡物理性能的聚合物,包括低密度和窄分子量分布。

    Transition metal catalysts for olefin polymerization
    7.
    发明授权
    Transition metal catalysts for olefin polymerization 有权
    用于烯烃聚合的过渡金属催化剂

    公开(公告)号:US06693154B2

    公开(公告)日:2004-02-17

    申请号:US09947745

    申请日:2001-09-06

    IPC分类号: C08F452

    摘要: A catalyst system useful for polymerizing olefins is disclosed. It comprises an activator and an organometallic complex. The complex includes a Group 3-10 transition or lanthanide metal and a 1,3-bis(arylimino)isoindoline or 1,3-bis(heteroarylimino)isoindoline ligand. Activities of the Group 8-10 catalyst systems rival or exceed those of late transition metal bis(imines). The resulting polyolefins typically have high molecular weights, broad molecular weight distributions, and a high degree of crystallinity, which makes them valuable for film applications.

    摘要翻译: 公开了一种可用于烯烃聚合的催化剂体系。 它包括活化剂和有机金属络合物。 络合物包括3-10族过渡金属或镧系金属和1,3-双(芳基亚氨基)异二氢吲哚或1,3-双(杂芳基亚氨基)异二氢吲哚配体。 8-10催化剂体系的活动与后期过渡金属二(亚胺)的活动相抗衡。 所得聚烯烃通常具有高分子量,宽分子量分布和高结晶度,这使得它们对薄膜应用是有价值的。

    Preparation of ultra-high-molecular-weight polyethylene
    8.
    发明授权
    Preparation of ultra-high-molecular-weight polyethylene 失效
    制备超高分子量聚乙烯

    公开(公告)号:US06635728B2

    公开(公告)日:2003-10-21

    申请号:US10044489

    申请日:2002-01-10

    申请人: Jia-Chu Liu

    发明人: Jia-Chu Liu

    IPC分类号: C08F442

    摘要: A process for making an ultra-high-molecular-weight polyethylene (UHMWPE) is disclosed. The process is performed with a supported quinolinoxy-containing single-site catalyst in the presence of a non-alumoxane activator, but in the absence of an &agr;-olefin, an aromatic solvent, and hydrogen. The process significantly increases the catalyst activity and the UHMWPE produced has improved tensile and impact properties.

    摘要翻译: 公开了制造超高分子量聚乙烯(UHMWPE)的方法。 该方法在非铝氧烷激活剂存在下,但不存在α-烯烃,芳族溶剂和氢气的情况下,用负载的含喹啉氧基的单中心催化剂进行。 该方法显着提高了催化剂活性,并且所生产的UHMWPE具有改善的拉伸和冲击性能。

    Olefin polymerization with pyridine moiety-containing singe-site catalysts
    9.
    发明授权
    Olefin polymerization with pyridine moiety-containing singe-site catalysts 失效
    烯属聚合与含吡啶部分的单位催化剂

    公开(公告)号:US06767975B1

    公开(公告)日:2004-07-27

    申请号:US10618938

    申请日:2003-07-14

    申请人: Jia-Chu Liu

    发明人: Jia-Chu Liu

    IPC分类号: C08F442

    摘要: An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine moiety-containing ligand. The presence of clay increases the catalyst activity. The process is suitable for making ultra-high molecular weight polyethylenes (UHMWPE). The UHMWPE produced has increased bulk density.

    摘要翻译: 公开了烯烃聚合方法。 聚合在粘土,活化剂和具有至少一个含吡啶部分的配体的过渡金属络合物的存在下进行。 粘土的存在增加了催化剂活性。 该方法适用于制造超高分子量聚乙烯(UHMWPE)。 生产的UHMWPE增加堆积密度。

    Single-site catalysts for olefin polymerization
    10.
    发明授权
    Single-site catalysts for olefin polymerization 失效
    用于烯烃聚合的单中心催化剂

    公开(公告)号:US06660678B1

    公开(公告)日:2003-12-09

    申请号:US09716954

    申请日:2000-11-21

    申请人: Jia-Chu Liu

    发明人: Jia-Chu Liu

    IPC分类号: B01J3100

    摘要: A method for making single-site catalysts useful for olefin polymerization is disclosed. A nitrogen-functional heterocycle is first deprotonated with an alkyllithium compound, followed by reaction of this anionic ligand precursor with about 0.5 equivalents of a Group 4 transition metal tetrahalide in a hydrocarbon solvent at a temperature greater than about 10° C. to give an organometallic complex-containing mixture. When combined with exceptionally low levels of an activator (e.g., methyl alumoxane), the mixture actively polymerizes olefins to give polymers with a favorable balance of physical properties, including low density and narrow molecular weight distribution.

    摘要翻译: 公开了制备用于烯烃聚合的单中心催化剂的方法。 首先用烷基锂化合物将氮官能杂环脱质子化,然后在大约10℃的温度下,在烃溶剂中使该阴离子配体前体与约0.5当量的第4族过渡金属四卤化物反应,得到有机金属 含复合物的混合物。 当与异常低水平的活化剂(例如甲基铝氧烷)组合时,混合物主动聚合烯烃以产生具有良好平衡物理性能的聚合物,包括低密度和窄分子量分布。