发明名称 |
Mixtures of bitumen and olefin polymers suitable for modifying bitumens |
摘要 |
Mixtures containing bitumen and at least one polymer selected from (A) an essentially atactic propylene homopolymer, (B) an amorphous propylene copolymer with a C4-C10 alpha -olefin, and (C) an amorphous propylene copolymer with ethylene; the polymers (A) and (B) having the following characteristics: intrinsic viscosity ( eta ): greater than 1 dl/g; % (r)-% (m)>0, where % (r) is the percentage of the syndiotactic dyads, and % (m) is the percentage of the isotactic dyads; less than 2% of the CH2 groups are contained in the (CH2)n sequences where n>/=2; and Bernoulli index (B)=1+/-0.2; the copolymer (C) having the following characteristics: the quantity of propylene in the copolymer (%P), expressed in mole percentage, and the EPE/(EPE+PPE+PPP) triad ratio satisfy the following equation:0.01 % P+EPE/(EPE+PPE+PPP)>/=1;and less than 2% of the CH2 groups are contained in the (CH2)n sequences where n is an even number.
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申请公布号 |
US5840109(A) |
申请公布日期 |
1998.11.24 |
申请号 |
US19970804724 |
申请日期 |
1997.02.21 |
申请人 |
MONTELL NORTH AMERICA INC. |
发明人 |
BRAGA, VITTORIO;SARTORI, FRANCO |
分类号 |
C08L95/00;(IPC1-7):C09D195/00 |
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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