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    • 5. 发明公开
    • Method to produce polymer modified ground tire rubber
    • Verfahren zur Herstellung eines polymermodifizierten gemahlten Reifengummis
    • EP2468800A2
    • 2012-06-27
    • EP11190329.0
    • 2011-11-23
    • Rohm and Haas Company
    • Heulings, Harry R. IVLau, Willie
    • C08J3/00C08J3/12C08J3/215C08L17/00C08L21/00
    • C08J3/005C08J3/124C08J3/126C08J3/215C08J2300/22C08J2317/00C08J2319/00C08J2321/00C08J2400/22C08L19/003C08L25/14C08L33/06
    • The present invention provides methods for making shelf-stable fluidizable particles that comprise mixing from 35 wt.% to 89.95 wt.%, based on total solids, of particles of one or more vulcanizate having a sieve particle size of from 10 to 800 µm, 10 to 65 wt.%, based on total solids, of one or more thermoplastic polymer in the form of an emulsion of a thermoplastic polymer in the presence of from 0.05 to 3 wt.%, based on total solids, of a passivating agent, to form a moist mixture followed by drying the moist mixture to form fluidizable particles such that the total solids content of the mixture remains 65 wt.% or more throughout processing. In addition, the invention provides plasticizer free storage stable fluidizable particles used, like the moist mixture itself, in thermoplastic processing, as well as colored fluidizable particles containing colorant in the thermoplasticshell for use in coloring or tinting polymer compositions.
    • 本发明提供了制备搁置稳定的可流化颗粒的方法,该方法包括以总固体为基础的35重量%至89.95重量%混合一种或多种筛粒径为10至800微米的硫化橡胶的颗粒, 10至65重量%,基于总固体,一种或多种热塑性聚合物乳液形式的热塑性聚合物在0.05至3重量%存在下,基于总固体,钝化剂, 以形成潮湿混合物,然后干燥湿润混合物以形成可流化颗粒,使得混合物的总固体含量在整个加工过程中保持在65重量%以上。 此外,本发明提供了不含增塑剂的稳定的可流化颗粒,如潮湿混合物本身在热塑性加工中,以及在热塑性壳体中含有着色剂的可着色的可流化颗粒,用于着色或着色聚合物组合物。