Method of the Preparation of Vulcanization Mixtures by the De-Vulcanization of Waste Rubber
    1.
    发明申请
    Method of the Preparation of Vulcanization Mixtures by the De-Vulcanization of Waste Rubber 审中-公开
    通过废橡胶脱硫制备硫化混合物的方法

    公开(公告)号:US20080287558A1

    公开(公告)日:2008-11-20

    申请号:US12095219

    申请日:2006-11-30

    IPC分类号: C08J11/28

    摘要: Waste rubber in the from of crumbs, mainly from automobile tires, but also from other used rubber products including waste rubber formed in the course of their manufacturing, is mixed in a kneader, calender, or extruder with a compound containing the chemical group —SO2—NH—. Subsequently, at temperatures up to 180° C. the rubber crumbs are de-vulcanized within 15-20 minutes, the de-vulcanization degree being controlled by the de-vulcanization agent concentration, and time and temperature of de-vulcanization. After the eventual addition of small amounts of extenders as oil, soot, raw rubber, inorganic filler and the vulcanization agent a vulcanization mixture is obtained that after pressing into the shape of the rubber product is subjected to a standard vulcanization process.

    摘要翻译: 主要来自汽车轮胎的面包屑中的废橡胶,还包括其制造过程中形成的废橡胶的其他二手橡胶制品,在捏合机,压延机或挤出机中与含有化学基团-SO的化合物-SO 2 -NH-。 随后,在高达180℃的温度下,橡胶屑在15-20分钟内脱硫,脱硫度由脱硫剂浓度,脱硫时间和温度控制。 在最终添加少量作为油,烟灰,生橡胶,无机填料和硫化剂的增量剂之后,获得硫化混合物,在将其压制成橡胶制品的形状进行标准硫化处理之后。