• 主题
高级搜索  >
历史搜索 清空历史
首页> 外国专利> TAPERED TRIBLOCK COPOLYMERS.

TAPERED TRIBLOCK COPOLYMERS.

机译：锥型三嵌段共聚物。

页面导航
  • 摘要
  • 著录项
  • 相似文献

摘要

A tapered triblock copolymer having controlled vinyl distribution, enlarged middle block with intermediate composition and microstructure, increased compatibility between its adjacent blocks, good processing characteristics and a peak average molecular weight between 25,000 and 300,000 is made by anionically polymerizing conjugated diene and monovinyl aromatic monomers, polar modifier and initiator to make a first block rich in conjugated diene, forming a second block that is a copolymer of the conjugated diene and the monovinyl aromatic monomer and which is less rich in the conjugated diene than the first block, and forming a third block that is a homopolymer of the monovinyl aromatic monomer. The first, second and third blocks comprise 30 to 60, 20 to 50wt % and 10 to 40 wt % of the tapered triblock copolymer, respectively. The tapered triblock copolymers may be used as asphalt modifiers, adhesives, sealants, compatibilizers, reinforcing agents and impact modifiers.
机译：通过对共轭二烯和单乙烯基芳族单体进行阴离子聚合，制得一种具有受控乙烯基分布，中间结构和微观结构扩大的中间嵌段，相邻嵌段之间相容性提高，中间工艺特性好，峰均分子量在25,000至300,000之间的峰均三嵌段共聚物，极性改性剂和引发剂，以使第一嵌段富含共轭二烯，形成第二嵌段，该第二嵌段是共轭二烯与单乙烯基芳族单体的共聚物，并且与第一嵌段相比，其共轭二烯的含量少，并形成第三嵌段即单乙烯基芳族单体的均聚物。第一，第二和第三嵌段分别占锥形三嵌段共聚物的30至60、20至50wt％和10至40wt％。锥形三嵌段共聚物可以用作沥青改性剂，粘合剂，密封剂，增容剂，增强剂和抗冲改性剂。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号