发明名称 |
Asphalt composition containing hydrogenated conjugated diene copolymer |
摘要 |
An asphalt composition comprising from 0.5 to 50 parts by weight of a hydrogenated conjugated diene copolymer (a) and 100 parts by weight of asphalt (b), wherein the hydrogenated conjugated diene copolymer (a) comprises a polymer block (A) comprising vinyl aromatic monomer units and at least one hydrogenated copolymer block (B) obtained by hydrogenation of a non-hydrogenated random copolymer block comprising conjugated diene monomer units and vinyl aromatic monomer units, the hydrogenated conjugated diene copolymer (a) having the following characteristics (1) to (5): (1) the content of the vinyl aromatic monomer units is more than 30% and not more than 60% by weight per weight of the hydrogenated conjugated diene copolymer; (2) the content of the polymer block (A) is from 5% to 50% by weight per weight of the hydrogenated copolymer; (3) the weight average molecular weight is from 30,000 to 500,000; (4) the percentage of hydrogenation of the double bonds in the conjugated diene monomer units is from 60% to 100%; and (5) at least one peak of the loss tangent (tan δ) is present in the range of from −40° C. to less than −10° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer.
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申请公布号 |
US7696267(B2) |
申请公布日期 |
2010.04.13 |
申请号 |
US20070727839 |
申请日期 |
2007.03.28 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
SASAGAWA MASAHIRO;SHIRAKI TOSHINORI;NAKAJIMA SHIGEO |
分类号 |
C08L95/00;F16F15/08;C08F8/00;C08F8/04;C08F36/00;C08F297/04;C08J3/00;C08L53/02;C08L101/00;C09D121/00;C09D153/02;C09D201/00;C09J153/02;C09K3/00 |
主分类号 |
C08L95/00 |
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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