发明名称 |
Stable paving compositions having improved low and high temperature properties |
摘要 |
A paving composition comprises a mixture of about 90 to 99.5 wt. % of an asphaltic material and about 0.5 to 10 wt. % of solid particles each encapsulated with a cross-linked polymer, the encapsulated particles being uniformly dispersed in the asphaltic material. The encapsulated particles have a particle-to-polymer weight ratio so as to provide a density match between the encapsulated particles and the asphaltic material. The paving composition according to the invention has a higher complex viscosity at high temperatures (60° C.) and is more ductile at low temperatures (-15° C.) in comparison with the base asphaltic material. Moreover, the composition is completely stable at elevated temperatures (160° C.) or during long periods of storage.
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申请公布号 |
US6359033(B1) |
申请公布日期 |
2002.03.19 |
申请号 |
US20000618053 |
申请日期 |
2000.07.17 |
申请人 |
UNIVERSITE LAVAL, CITE UNIVERSITAIRE |
发明人 |
AIT-KADI ABDELLATIF;YOUSEFI ALI AKBAR |
分类号 |
C08K9/08;E01C7/20;(IPC1-7):C08K5/01;C08K3/34 |
主分类号 |
C08K9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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