Polymer composition and preparation method
    2.
    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
    3.
    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。

    Nitrite-sorbate stabilizing system
    4.
    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。

    Thermally stable polyesters having improved dyeability
    5.
    发明授权
    Thermally stable polyesters having improved dyeability 失效
    具有改善可变性的热稳定聚酯

    公开(公告)号:US3684768A

    公开(公告)日:1972-08-15

    申请号:US3684768D

    申请日:1970-07-17

    摘要: Thermally stable polyesters having improved dyeability with disperse dyes are produced from dicarboxylic acids or reactive derivatives thereof, polymethylene glycols and small amounts of a dihydroxypropoxypoly(alkyleneoxy) alkane of the formula WHERE R is an alkyl group containing an average of from about eight to 20 carbon atoms; G is a hydrocarbon radical selected from the group consisting of ethylene, propylene and isomers thereof, and mixtures of the above, and x has an average value of eight to 20 and is about equal to or greater than R.

    摘要翻译: 具有改进的分散染料染色性的热稳定性聚酯由二羧酸或其反应性衍生物,聚亚甲基二醇和少量式WHERE R 2是含有平均约8至20碳的烷基的二羟基丙氧基聚(亚烷氧基)烷烃 原子 G是选自乙烯,丙烯及其异构体的烃基,以及上述的混合物,x的平均值为8至20,大约等于或大于R。

    Impact-modified polymers (p-1304)
    6.
    发明授权
    Impact-modified polymers (p-1304) 失效
    冲击改性聚合物(p-1304)

    公开(公告)号:US5066723A

    公开(公告)日:1991-11-19

    申请号:US632179

    申请日:1990-12-21

    IPC分类号: C08F8/50

    摘要: Impact-modified polymeric materials are produced by visbreaking certain reactor blends. In a preferred embodiment, impact-modified polypropylene materials are produced by visbreaking a reactor blend of polypropylene and thermoplastic polyethylene. The polypropylene material is preferably homopolypropylene having a melt flow rate of less than about 1 dg/min. Such impact-modified polymeric materials manifest unexpected compatibility characteristics, increased impact resistance at low temperatures, improved antiblush characteristics and improved flow characteristics.

    摘要翻译: 冲击改性的聚合物材料通过减粘裂化某些反应器共混物来制备。 在优选的实施方案中,冲击改性的聚丙烯材料通过减粘裂化聚丙烯和热塑性聚乙烯的反应器共混物来制备。 聚丙烯材料优选为熔体流动速率小于约1dg / min的均聚丙烯。 这种冲击改性的聚合材料表现出意想不到的相容特性,在低温下增加的耐冲击性,改进的抗冲击特性和改善的流动特性。