发明授权
- 专利标题: Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using a halohydrocarbon
- 专利标题(中): 使用卤代烃形成无定形超高分子量聚α-烯烃减阻剂的方法
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申请号: US396247申请日: 1999-09-15
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公开(公告)号: US6162773A公开(公告)日: 2000-12-19
- 发明人: Gerald B. Eaton , Michael J. Monahan , Robert J. Tipton
- 申请人: Gerald B. Eaton , Michael J. Monahan , Robert J. Tipton
- 申请人地址: TX Brookshire
- 专利权人: Energy & Environmental International, L.C.
- 当前专利权人: Energy & Environmental International, L.C.
- 当前专利权人地址: TX Brookshire
- 主分类号: C08F210/14
- IPC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 ; C10M143/00
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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