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    • 2. 发明申请
    • Cocatalysts useful for preparing polyethylene pipe
    • 可用于制备聚乙烯管的助催化剂
    • US20070003720A1
    • 2007-01-04
    • US11471996
    • 2006-06-21
    • Steve GrayKayo VizziniCyril ChevillardVincent Barre
    • Steve GrayKayo VizziniCyril ChevillardVincent Barre
    • B32B27/08
    • C08F10/00C08F110/02Y10T428/1352C08F2500/12C08F2500/04C08F4/642
    • Commonly used triethyl aluminum and tri-isobutyl aluminum cocatalysts may be replaced in olefin polymerizations with a cocatalyst conforming to the formula AlRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz is a linear or branched organic moiety having at least 5 carbons or heteroatom substituted organic moiety or a heterocyclic moiety having at least 4 atoms and may be anionic (n=2) or dianionic (n=1). Xz may also be hydrogen. The general formula is subject to the proviso that when n=2, each Xz may be the same or different and that both Xz moieties may not be hydrogen. The aluminum complex may also be in the form of an adduct complex where Lz is a Lewis base and m=1-3. Use of the invention enables production of a polyolefin pipe, such as polyethylene pipe, exhibiting improved processing, crack resistance and other desirable properties.
    • 通常使用的三乙基铝和三异丁基铝助催化剂可以用烯烃聚合反应替代,其中助催化剂符合式<?in-line-formula description =“In-line Formulas”end =“lead”?> AlR (X z) 其中R z是具有至少5个碳的直链或支链有机部分,X是直链或支链的有机部分 具有至少5个碳原子或杂原子取代的有机部分的部分或具有至少4个原子的杂环部分,并且可以是阴离子(n = 2)或二阴离子(n = 1)。 X 也可以是氢。 通式为条件,当n = 2时,每个X Z可以相同或不同,并且两个X z可以不是氢。 铝络合物也可以是加合物络合物的形式,其中L z是路易斯碱,m = 1-3。 使用本发明可以生产出聚烯烃管,如聚乙烯管,具有改善的加工性,抗裂性和其它所需的性能。
    • 9. 发明申请
    • Cocatalysts for olefin polymerizations
    • 用于烯烃聚合的助催化剂
    • US20070004876A1
    • 2007-01-04
    • US11472153
    • 2006-06-21
    • Kayo VizziniSteve Gray
    • Kayo VizziniSteve Gray
    • C08F2/00
    • C08F10/00C08F210/16C08F4/6557C08F4/6426C08F4/642C08F210/08C08F2500/12C08F2500/18
    • Commonly used triethyl aluminum and tri-isobutyl aluminum cocatalysts may be replaced in olefin polymerizations with a cocatalyst conforming to the formula AlRz(Xz)nLzm wherein Rz may be a linear or branched organic moiety having at least 5 carbons and Xz may be a linear or branched organic moiety having at least 5 carbons or heteroatom substituted organic moiety or a heterocyclic moiety having at least 4 atoms and may be anionic (n=2) or dianionic (n=1). One Xz may also be hydrogen. The aluminum complex may also be in the form of an adduct complex where Lz may be a Lewis base and m=1−3. In the absence of a Lewis base, m=0.
    • 通常使用的三乙基铝和三异丁基铝助催化剂可以用烯烃聚合反应替代,其中助催化剂符合式<?in-line-formula description =“In-line Formulas”end =“lead”?> AlR (X z) 其中R z可以是具有至少5个碳的直链或支链有机部分,X Z可以是直链或支链的, 具有至少5个碳原子或杂原子取代的有机部分的支链有机部分或具有至少4个原子的杂环部分,并且可以是阴离子(n = 2)或二阴离子(n = 1)。 一个X z也可以是氢。 铝络合物也可以是加合物络合物的形式,其中L z可以是路易斯碱,m = 1-3。 在不存在路易斯碱的情况下,m = 0。
    • 10. 发明授权
    • Process for controlling morphology of Ziegler-Natta catalysts
    • 控制齐格勒 - 纳塔催化剂形态的方法
    • US08063159B2
    • 2011-11-22
    • US11778262
    • 2007-07-16
    • Kayo VizziniHenry EnriquezSteven D. GrayTim J. CoffyDavid W. Knoeppel
    • Kayo VizziniHenry EnriquezSteven D. GrayTim J. CoffyDavid W. Knoeppel
    • C08F4/00
    • C08F10/00C08F210/16Y10T428/1345Y10T428/139C08F4/6546C08F4/6541
    • Disclosed is a process for making a Ziegler-Natta catalyst having controlled particle size and distribution. It comprises altering the precipitation of a catalyst component from a catalyst synthesis solution including a soluble magnesium containing catalyst precursor by controlling the concentration of either the soluble magnesium containing catalyst precursor, wherein the average particle size of the catalyst component is increased, and the particle size distribution increased, with a decreased concentration of the soluble magnesium containing catalyst precursor; or of the precipitating agent, wherein the average particle size of the catalyst component is increased, and the particle size distribution increased with an increased concentration of the precipitating agent. Use of the invention enables improved catalyst consistency regardless of production scale and customizing of catalyst morphology to desired polymer morphology. The novel catalyst components may be used to prepare polymers, and end-use articles therefrom, having desirable properties.
    • 公开了一种制备具有受控粒度和分布的齐格勒 - 纳塔催化剂的方法。 其包括通过控制可溶性含镁催化剂前体的浓度来改变催化剂组分从包括可溶性镁的催化剂前体的催化剂合成溶液中的沉淀,其中催化剂组分的平均粒径增加,并且颗粒尺寸 分布增加,可溶性含镁催化剂前体的浓度降低; 或沉淀剂,其中催化剂组分的平均粒度增加,并且随着沉淀剂浓度的增加,粒度分布增加。 使用本发明能够改善催化剂的一致性,而不管生产规模如何,催化剂形态定制成所需的聚合物形态。 新颖的催化剂组分可用于制备聚合物及其最终用途制品,具有期望的性能。