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    • 71. 发明授权
    • Block copolymer compositions
    • 嵌段共聚物组合物
    • US3686365A
    • 1972-08-22
    • US3686365D
    • 1970-11-16
    • ROBERT M SEQUEIRA
    • SEQUEIRA ROBERT M
    • C08L53/02C08F29/12C08F33/08
    • C08L53/02Y10S525/901Y10S525/94C08L2666/24
    • Polymeric compositions having improved environmental resistance comprising A. ABOUT 80 TO 90 PERCENT OF BLOCK COPOLYMERS HAVING AT LEAST TWO MONO ALPHA ALKENYL ARENE POLYMER BLOCKS AND AT LEAST ONE CONJUGATED DIENE POLYMER BLOCK AND B. ABOUT 20 TO 1 PERCENT OF A SELECTIVELY HYDROGENATED BLOCK COPOLYMER HAVING, PRIOR TO HYDROGENATION, AT LEAST ONE MONO ALPHA ALKENYL ARENE POLYMER BLOCK AND AT LEAST ONE CONJUGATED DIENE POLYMER BLOCK, SAID BLOCK COPOLYMER HAVING BEEN SELECTIVELY HYDROGENATED TO SATURATE AT LEAST 80 PERCENT OF THE OLEFINIC DOUBLE BONDS AND 0 TO 25 PERCENT OF THE AROMATIC DOUBLE BONDS. The compositions are thermoplastic elastomers.
    • 具有改善的耐环境性的聚合物组合物包括A.约80至90%的具有至少两个单体ALPHA亚苄基聚合物嵌段和至少一个连接的二烯聚合物嵌段的嵌段共聚物和B.约20至1%的选择性氢化嵌段共聚物 在加氢过程中,至少有一个单体ALPHA ALKENYL ARENE聚合物块和至少一个连接的二烯聚合物嵌段,所述嵌段共聚物被选择性地加氢至至少80%的烯烃双酚和0至25%的芳族双酚 债券。 组合物是热塑性弹性体。
    • 80. 发明授权
    • Expanded polyelectrolyte resin and process for making same
    • 膨胀聚电解质树脂及其制备方法
    • US3635846A
    • 1972-01-18
    • US3635846D
    • 1967-07-13
    • AMICON CORP
    • SPLITZ STEPHEN A
    • C08J9/28C08F47/08C08F33/08
    • C08J9/28C08J2201/0502
    • A process for making highly expanded polyelectrolyte gel powders suitable for incorporation into, and imparting improved moisture vapor transmission rates to, films comprising hydrophobic polymers and the like. This process comprises the removal of water and other plasticizing components from precipitated polyelectrolyte complex gels, redispersing the gel in a volatile liquid medium, and thereupon causing the rapid evaporation of said volatile medium under conditions, conveniently moderately elevated temperatures, which prevent moisture from condensing on the polyelectrolyte gel as it is separated from the aforesaid volatile medium. The unique products of the invention are highly porous and characterized by their high absorptivity of dioctyl phthalate, their low-bulk density and their ability to enhance the moisture vapor transmission of a standard polyvinylchloride film formulation by a factor in excess of about 5 when incorporated therein at loadings of about 15 percent on total polymer weight.
    • 一种用于制备高度膨胀的聚电解质凝胶粉末的方法,其适于掺入并赋予包含疏水性聚合物等的膜的改善的水蒸汽透过率。 该方法包括从沉淀的聚电解质复合凝胶中除去水和其它增塑组分,将凝胶再分散在挥发性液体介质中,并随后引起所述挥发性介质的快速蒸发,条件适宜温和升高,防止水分冷凝 该聚电解质凝胶与上述挥发性介质分离。 本发明的独特产品是高度多孔的,其特征在于其邻苯二甲酸二辛酯的高吸收性,它们的低堆积密度以及当将标准聚氯乙烯薄膜制剂掺入其中时将其增加超过约5的因子的水蒸汽透过性的能力 在总聚合物重量上的载体量为约15%。