Catalyst composition for copolymerizing ethylene
    4.
    发明授权
    Catalyst composition for copolymerizing ethylene 失效
    乙烯共聚用催化剂组合物

    公开(公告)号:US4370456A

    公开(公告)日:1983-01-25

    申请号:US324075

    申请日:1981-11-23

    CPC分类号: C08F210/00 Y10S526/901

    摘要: Ethylene copolymers having improved resistance to pinstriping and gel streaking when extruded into film can be produced by continuously copolymerizing ethylene with one or more higher alpha olefin monomers in a low pressure gas phase reaction with a catalyst composition prepared by forming a precursor composition from a magnesium compound, titanium compound, and electron donor compound; diluting said precursor composition with a silica support which has been treated with a dialkylzinc compound; and activating the diluted precursor composition with an organoaluminum compound.

    摘要翻译: 通过在低压气相反应中将乙烯与一种或多种较高级的α-烯烃单体连续共聚合,可以通过在由镁化合物形成前体组合物制备的催化剂组合物中连续共聚乙烯来制备具有改进的耐挤压和凝胶条纹的乙烯共聚物 ,钛化合物和电子给体化合物; 用二烷基锌化合物处理的二氧化硅载体稀释所述前体组合物; 并用有机铝化合物活化稀释的前体组合物。

    Catalyst composition for polymerizing ethylene
    6.
    发明授权
    Catalyst composition for polymerizing ethylene 失效
    用于聚合乙烯的催化剂组合物

    公开(公告)号:US5019633A

    公开(公告)日:1991-05-28

    申请号:US68756

    申请日:1987-06-29

    IPC分类号: C08F10/02 C08F110/02

    CPC分类号: C08F10/02 C08F110/02

    摘要: Catalyst compositions suitable for producing high density ethylene polymers in a low pressure gas phase process with low accompanying ethylene hydrogenation are produced by forming a precursor composition from a magnesium compound, titanium compound and electron donor compound; diluting said precursor composition with an inert carrier material; treating said diluted precursor compositon with a boron halide compound; and activating the precursor composition with an organo aluminum compound.

    摘要翻译: 通过从镁化合物,钛化合物和电子给体化合物形成前体组合物,生产适用于低伴随乙烯氢化的低压气相方法生产高密度乙烯聚合物的催化剂组合物; 用惰性载体材料稀释所述前体组合物; 用卤化硼化合物处理所述稀释的前体组合物; 并用有机铝化合物活化前体组合物。

    Triethylene glycol-based heat transfer fluids
    7.
    发明授权
    Triethylene glycol-based heat transfer fluids 失效
    基于三乙二醇的传热流体

    公开(公告)号:US4758367A

    公开(公告)日:1988-07-19

    申请号:US865669

    申请日:1986-05-22

    IPC分类号: C09K5/08 C09K5/00

    CPC分类号: C09K5/08

    摘要: Single-phase, thermally-stable, corrosion-inhibiting heat transfer fluids comprising triethylene glycol, a corrosion-inhibiting amount of a mixture of a soluble borate compound and a soluble Group VIa metal oxygenate compound selected from the group consisting of chromate, molybdate and tungstate compounds, and, optionally, water, a copper corrosion inhibitor and sodium nitrate.

    摘要翻译: 包含三乙二醇的单相,热稳定,腐蚀抑制的传热流体,腐蚀抑制量的可溶性硼酸盐化合物和可溶性VIa族金属氧化物化合物的混合物,其选自铬酸盐,钼酸盐和钨酸盐 化合物和任选的水,铜腐蚀抑制剂和硝酸钠。