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    • 7. 发明授权
    • Acrylate pressure-sensitive adhesives containing insolubles
    • 含有不溶物的丙烯酸酯压敏粘合剂
    • US4843134A
    • 1989-06-27
    • US127611
    • 1987-11-30
    • Thomas A. KotnourRonald L. BarberWalter L. Krueger
    • Thomas A. KotnourRonald L. BarberWalter L. Krueger
    • C08F2/02C09J7/02
    • C08F2/02C09J7/021
    • A bulk polymerization process for free radical polymerization of vinyl monomers in a wiped surface reactor is disclosed. Referring to FIG. 1; monomer streams 5 (after purification and silica gel column 2) and 7 are combined with free radical initiator 9 to form a premix 16. Pump 18 transfers the premix stream 22 through static mixer 24 into a wiped surface reactor 27. The reactor can be a counter rotating twin screw extruder which produces polymer stream 36 without the need of solvent and using residence times much shorter than prior art solution or emulsion processes.Some unique pressure sensitive adhesive acrylate polymers have been produced. They are believed to have a relatively high degree of branching. The bulk polymerization process permits the manufacture of pressure sensitive adhesive articles by extruding directly from the twin screw extruder onto a substrate.
    • 公开了一种在擦拭表面反应器中乙烯基单体的自由基聚合的本体聚合方法。 参考图 1; 单体流5(纯化后和硅胶柱2)和7与自由基引发剂9组合以形成预混物16.泵18将预混物流22通过静态混合器24转移到擦拭表面反应器27中。反应器可以是 反向旋转双螺杆挤出机,其不需要溶剂并且使用比现有技术的溶液或乳液方法短得多的停留时间产生聚合物流36。 已经生产了一些独特的压敏粘合剂丙烯酸酯聚合物。 据信它们具有较高的分枝度。 本体聚合方法允许通过直接从双螺杆挤出机挤出到基底上来制造压敏粘合剂制品。