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    Method for impact modification of ethylenically unsaturated nitrile polymers and polymer blends produced thereby
    2.
    发明授权
    Method for impact modification of ethylenically unsaturated nitrile polymers and polymer blends produced thereby 失效
    乙烯基不饱和单体聚合物和聚合物混合物的影响改性方法

    公开(公告)号：US3671607A

    公开(公告)日：1972-06-20

    申请号：US3671607D

    申请日：1969-10-14

    申请人： MONSANTO CO

    发明人： LEE YOON CHAI

    IPC分类号： C08F285/00 ,  C08F291/02 ,  C08L33/20 ,  C08L51/00 ,  C08F41/12 ,  C08F37/18

    CPC分类号： C08L51/003 ,  C08F285/00 ,  C08F291/02 ,  C08L33/20 ,  Y10S525/902 ,  Y10S525/932 ,  Y10S525/942 ,  C08F220/42 ,  C08L2666/24

    摘要： A polyblend with good impact properties, good light stability, good heat stability, low water vapor transmission and low oxygen permeability has a polymerization graft component with a rubbery substrate and a composite superstrate. Initially, the rubbery substrate is grafted with a monomer mixture containing little or no nitrile monomer and generally comprised of monomers selected from the group consisting of monovinylidene aromatic hydrocarbon, alkyl esters of unsaturated carboxylic acids, unsaturated carboxylic acids, vinyl alkanoates and vinyl ethers. Thereafter, the resultant graft copolymer is admixed and grafted with a second monomer formulation containing at least 60 percent by weight of ethylenically unsaturated nitrile monomers. The resultant composite graft copolymer is then blended with a matrix of an ethylenically unsaturated nitrile polymer to provide the desired impact modified polymer blends.

    摘要翻译： 具有良好的冲击性能，良好的光稳定性，良好的热稳定性，低水蒸汽透过性和低透氧性的聚合物具有橡胶基底和复合覆层的聚合接枝组分。 最初，橡胶状基材用含有很少或不含腈单体的单体混合物接枝，通常由选自单亚乙烯基芳族烃，不饱和羧酸的烷基酯，不饱和羧酸，链烷酸乙烯酯和乙烯基醚的单体组成。 此后，将所得的接枝共聚物与含有至少60重量％烯键式不饱和腈单体的第二单体制剂混合并接枝。 然后将所得的复合接枝共聚物与烯属不饱和腈聚合物的基体共混以提供所需的抗冲改性聚合物共混物。

    Nitrile polymeric blends
    7.
    发明授权
    Nitrile polymeric blends 失效
    NITRILE POLYMERIC BLENDS

    公开(公告)号：US3607978A

    公开(公告)日：1971-09-21

    申请号：US3607978D

    申请日：1969-01-03

    申请人： MONSANTO CO

    发明人： LEE YOON CHAI ,  TREMENTOZZI QUIRINO A

    IPC分类号： C08L33/20 ,  C08F37/18 ,  C08F41/12

    CPC分类号： C08L33/20 ,  C08L2666/04

    摘要： A polymeric blend is prepared from a nitrile polymer and a modifying polymer containing dicyanobutene-1. The modifying polymer greatly improves the processability of the nitrile polymer while maintaining or improving the barrier properties thereof, and products molded from the blends exhibit better optical characteristics than products similarly produced from the unmodified nitrile polymer.