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    • 2. 发明授权
    • Polymerization of isobutylene
    • 异丁烯的聚合
    • US4391959A
    • 1983-07-05
    • US341875
    • 1982-01-22
    • Karl-Heinz FauthHeinrich MohrWolfgang Immel
    • Karl-Heinz FauthHeinrich MohrWolfgang Immel
    • C08F2/06C08F110/10C08F4/14
    • C08F110/10Y10S526/918Y10S526/92
    • A process for the preparation of polyisobutylene by polymerizing isobutylene in a polymerization zone which is at from 0.degree. to -130.degree. C., by means of from 0.01 to 1.0 percent by weight of boron trifluoride catalyst, in the presence of a primary or secondary alcohol as polymerization accelerator and in the presence of from 30 to 90% by weight of a low-boiling solvent which is inert under the reaction conditions, wherein the solvent vaporized during the polymerization is continuously drawn off, liquefied and recycled, in the liquid state, to the polymerization zone, and wherein the boron trifluoride catalyst used contains less than 0.3, in particular less than 0.01, percent by volume of silicon tetrafluoride and the solvent, which is preferably ethylene, is recycled not less than twice but not more than 36 times during the continuous polymerization.
    • 通过在0-130℃的聚合区域中,通过在一次或二次存在下,通过0.01至1.0重量%的三氟化硼催化剂聚合异丁烯来制备聚异丁烯的方法 醇作为聚合促进剂,在30〜90重量%的低沸点溶剂的存在下,在反应条件下是惰性的,其中在聚合过程中蒸发的溶剂以液态连续地抽出,液化和再循环 ,并且其中使用的三氟化硼催化剂包含小于0.3,特别是小于0.01体积%的四氟化硅,并且优选乙烯的溶剂被循环不少于两次但不超过36 在连续聚合过程中。