发明名称 |
Bituminous compositions modified by non-blocking elastomers |
摘要 |
Bituminous compositions are provided comprising a mixture of linear or radial block copolymers and diblock copolymers. The mass ratio of linear or radial block copolymer to diblock copolymer is in the range of about 5/1 to about 1/5 such that the resulting thermoplastic block copolymer composition mixes readily with bitumen but does not block before mixing. The non-blocking block copolymer composition has a bulk density in the range from about 20 lb/ft<SUP>3 </SUP>to about 30 lb/ft<SUP>3 </SUP>and includes from about 0.25% to about 10% by weight of a dusting agent. A process for producing the bituminous composition comprising high temperature, low shear mixing is also provided. The bituminous compositions herein provided are useful as road paving and asphaltic adhesive materials.
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申请公布号 |
US2005137295(A1) |
申请公布日期 |
2005.06.23 |
申请号 |
US20040010927 |
申请日期 |
2004.12.13 |
申请人 |
KRATON POLYMERS U.S. LLC |
发明人 |
KENDRICK HARRIET J.;KLUTTZ ROBERT Q. |
分类号 |
C08L1/00;C08L53/00;C08L53/02;C08L95/00;(IPC1-7):C08L1/00 |
主分类号 |
C08L1/00 |
代理机构 |
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