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    • 3. 发明授权
    • Process for preparing improved transparent shaped articles from
vinylidene chloride polymer compositions modified with a nitrile
containing elastomer
    • 由含腈弹性体改性的偏二氯乙烯聚合物组合物制备改进的透明成型制品的方法
    • US4079115A
    • 1978-03-14
    • US645748
    • 1975-12-31
    • William J. SettineriJames H. Oswald
    • William J. SettineriJames H. Oswald
    • C08L9/02C08L27/08B29B3/04
    • C08L27/08C08L9/02
    • An improved process for preparing transparent shaped articles from a vinylidene chloride polymer, said articles having excellent barrier properties and a high degree of clarity, continuity and flexibility such process comprising (1) preparing a substantially homogeneous admixture from (A) a particulate vinylidene chloride polymer having crystalline melting peaks of at least about 175.degree. C. as determined by differential thermal analysis, and (B) a volatile material having dispersed or dissolved therein from about 3 to 20 percent based on vinylidene chloride polymer weight of a nitrile containing elastomer which is compatible with the vinylidene chloride polymer, and wherein the volatile material is a nonsolvent for the vinylidene chloride polymer, then (2) removing the volatile material from the admixture and (3) thermally fabricating the admixture into a shaped article.
    • 一种用于从偏二氯乙烯聚合物制备透明成型制品的改进方法,所述制品具有优异的阻隔性能和高透明度,连续性和柔性,该方法包括(1)从(A)偏二氯乙烯颗粒聚合物制备基本上均匀的混合物 具有通过差示热分析确定的至少约175℃的结晶熔融峰,和(B)基于含腈弹性体的偏二氯乙烯聚合物重量分散或溶解约3至20%的挥发性物质,其为 与偏二氯乙烯聚合物相容,并且其中挥发性物质是偏二氯乙烯聚合物的非溶剂,然后(2)从混合物中除去挥发性物质,和(3)将该混合物热加工成成型制品。