发明名称 |
Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using a halohydrocarbon |
摘要 |
A composition including polyalphaolefins that function as drag reducing agents and a process for the preparation of polyalphaolefins that function as drag reducing agents are disclosed. The process includes contacting alpha olefin monomers with a catalyst system, which includes a catalyst and an activator (co-catalyst) in a reactant mixture. The catalyst is a transition metal catalyst, preferably titanium trichloride, and the co-catalyst may include an alkylaluminoxane, alone or in combination, with a dialkylaluminum halide or a halohydrocarbon. The polymerization of the alpha olefin monomers produces a non-crystalline, ultra-high molecular weight polyalphaolefin having an inherent viscosity of at least 10 dL/g. The addition of the alkylaluminoxane during the polymerization process provides for a non-crystalline, ultra-high molecular weight polyalphaolefin and a more uniform molecular weight distribution of the resulting polyalphaolefin, thereby creating a drag reducing agent superior to known drag reducing agents. A process for forming a drag reducing agent comprising a non-crystalline, ultra-high molecular weight polyalphaolefin having an inherent viscosity of about at least 10 dL/g and a process for reducing drag in a conduit are also disclosed.
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申请公布号 |
US6162773(A) |
申请公布日期 |
2000.12.19 |
申请号 |
US19990396247 |
申请日期 |
1999.09.15 |
申请人 |
ENERGY & ENVIRONMENTAL INTERNATIONAL, L.C. |
发明人 |
EATON, GERALD B.;MONAHAN, MICHAEL J.;TIPTON, ROBERT J. |
分类号 |
C08F210/14;C08F2/00;C08F2/08;C08F2/42;C08F2/44;C08F4/44;C08F4/642;C08F4/649;C08F10/00;C08F110/00;C08F210/00;C08F210/16;C08L23/00;C09K3/00;C10L1/16;C10M107/10;C10M143/08;F17D1/16;(IPC1-7):C10M143/00 |
主分类号 |
C08F210/14 |
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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