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    • 56. 发明授权
    • Means of producing high diblock content thermoplastic elastomers with functional termination
    • 具有功能终止的高二嵌段含量的热塑性弹性体的方法
    • US06417270B1
    • 2002-07-09
    • US09757140
    • 2001-01-09
    • Mark H. WollumDaniel F. Graves
    • Mark H. WollumDaniel F. Graves
    • C08F25506
    • C08F297/04
    • A process of preparing a diblock/triblock composition in a single reaction vessel includes reacting a first monomer, such as styrene, with a first portion of an anionic catalyst in a suitable solvent to form a first polymer block of the triblock. A second step includes adding a second monomer, such as butadiene (when the first monomer is styrene). This forms a second block of the triblock and a first block of the diblock. A further addition of the first monomer completes the diblock and triblock interpolymers. At least a portion of the diblock and/or triblock interpolymers are functionally terminated with a functional terminating agent, such as cyclohexene oxide or isopropanol, to provide the blocks with a functional group. The functional group and the proportion of the interpolymers functionally terminated are selected to provide desired adhesive properties for a particular application.
    • 在单个反应容器中制备二嵌段/三嵌段组合物的方法包括使第一单体如苯乙烯与阴离子催化剂的第一部分在合适的溶剂中反应以形成三嵌段的第一聚合物嵌段。 第二步包括加入第二单体,如丁二烯(当第一单体是苯乙烯时)。 这形成了三次锁的第二块,并且形成了二块的第一块。 另外加入第一单体可完成二嵌段和三嵌段互聚物。 二嵌段和/或三嵌段互聚物的至少一部分用功能性终止剂如环己烯氧化物或异丙醇在功能上终止,以提供具有官能团的嵌段。 选择官能团和功能性终止的互聚物的比例以为特定应用提供期望的粘合剂性质。