Nitrite-sorbate stabilizing system
    1.
    发明授权
    Nitrite-sorbate stabilizing system 失效
    亚硝酸盐 - 山梨酸稳定体系

    公开(公告)号:US4370437A

    公开(公告)日:1983-01-25

    申请号:US345967

    申请日:1982-02-05

    IPC分类号: C08K3/28 C08K5/098

    CPC分类号: C08K5/098 C08K3/28

    摘要: The addition of a nitrite-sorbate stabilizing system to a copolymer of a conjugated diene and a monovinyl-substituted aromatic hydrocarbon improves thermal stability and suppresses gel and fisheye formation.

    摘要翻译: 向共轭二烯和单乙烯基取代的芳族烃的共聚物中加入亚硝酸盐 - 山梨酸酯稳定体系提高了热稳定性并抑制凝胶和鱼眼形成。

    Polymer composition and preparation method
    3.
    发明授权
    Polymer composition and preparation method 失效
    聚合物组成及制备方法

    公开(公告)号:US4598128A

    公开(公告)日:1986-07-01

    申请号:US474767

    申请日:1983-03-14

    摘要: An ethylene polymer composition is provided, the composition being a blend of a first ethylene polymer and a second ethylene polymer, the second ethylene polymer characterized by molecules having long chain Y-branches. The blend can be prepared by an extrusion process in which a portion of the polyethylene fed to the process is irradiated and the irradiated and non-irradiated polymers are blended by melt extrusion. The blends exhibit high flow activation energies and good blow-molding properties.

    摘要翻译: 提供乙烯聚合物组合物,该组合物是第一乙烯聚合物和第二乙烯聚合物的共混物,第二乙烯聚合物的特征在于具有长链Y分支的分子。 共混物可以通过挤出方法制备,其中将一部分进料到该方法中的聚乙烯进行照射,并且通过熔融挤出将辐照和未辐射的聚合物共混。 共混物表现出高流动活化能和良好的吹塑性能。

    Low density polyethylene
    4.
    发明授权
    Low density polyethylene 失效
    低密度聚乙烯

    公开(公告)号:US4522987A

    公开(公告)日:1985-06-11

    申请号:US396930

    申请日:1982-07-09

    CPC分类号: C08F210/16 Y10S526/901

    摘要: A process for copolymerizing ethylene with another monoolefin is described wherein the other monoolefin is incorporated into the polymer at very high efficiencies and in several instances the copolymer produced contains a higher concentration of the comonomer than the gas phase in the polymerization zone. A novel ethylene/1-hexene copolymer having very high relative comonomer dispersities (99% or higher, and even above 100%) is also described.

    摘要翻译: 描述了将乙烯与另一种单烯烃共聚的方法,其中其它单烯烃以非常高的效率并入聚合物中,并且在几种情况下,产生的共聚物含有比聚合区中的气相更高浓度的共聚单体。 还描述了具有非常高的相对共聚单体分散性(99%或更高,甚至高于100%)的新型乙烯/ 1-己烯共聚物。