Methods for forming amorphous ultra-high molecular weight
polyalphaolefin drag reducing agents
    1.
    发明授权
    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents 失效
    无定形超高分子量聚α-烯烃减阻剂的制备方法

    公开(公告)号:US6015779A

    公开(公告)日:2000-01-18

    申请号:US81964

    申请日:1998-05-20

    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.

    摘要翻译: 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与催化剂体系接触,催化剂体系包括反应物混合物中的催化剂和活化剂(助催化剂)。 催化剂是过渡金属催化剂,优选三氯化钛,并且助催化剂可以单独或与二烷基卤化铝或卤代烃单独或组合地使用烷基铝氧烷。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的非结晶超高分子量聚α-烯烃。 在聚合过程中加入烷基铝氧烷提供非结晶,超高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布,从而产生优于已知减阻剂的减阻剂。 还公开了一种形成减阻剂的方法,其包含特性粘度为约10dL / g的非结晶,超高分子量聚α-烯烃和减少管道中的阻力的方法。

    Alpha olefin monomer partitioning agents for drag reducing agents and methods of forming drag reducing agents using alpha olefin monomer partitioning agents
    3.
    发明授权
    Alpha olefin monomer partitioning agents for drag reducing agents and methods of forming drag reducing agents using alpha olefin monomer partitioning agents 有权
    用于减阻剂的α-烯烃单体分配剂和使用α-烯烃单体分配剂形成减阻剂的方法

    公开(公告)号:US06815011B2

    公开(公告)日:2004-11-09

    申请号:US09962784

    申请日:2001-09-25

    IPC分类号: B05D722

    摘要: A composition including a polyalphaolefin and at least one alpha olefin monomer partitioning agent that function as drag reducing agents and a process for the preparation of the drag reducing agents are disclosed. The process includes the steps of contacting alpha olefin monomers with at least one catalyst in a reactant mixture to form a polyalphaolefin. The reactant mixture may include at least one alpha olefin partitioning agent or the at least one alpha olefin partitioning agent may be mixed with the polyalphaolefin after polymerization. The alpha olefin monomer partitioning agents are alpha olefin monomers that are solid at ambient temperatures. Preferably, the alpha olefin monomers are selected from the group consisting of C20-C60 alpha olefin monomers. A process for reducing drag in a conduit is also disclosed.

    摘要翻译: 公开了一种包含聚α烯烃和至少一种用作减阻剂的α-烯烃单体分配剂和用于制备减阻剂的方法的组合物。 该方法包括使α烯烃单体与反应物混合物中的至少一种催化剂接触以形成聚α-烯烃的步骤。 反应物混合物可以包括至少一种α-烯烃分配剂,或者聚合后可以将至少一种α-烯烃分配剂与聚α-烯烃混合。 α-烯烃单体分配剂是在环境温度下为固体的α-烯烃单体。 优选地,α-烯烃单体选自C20-C60α烯烃单体。 还公开了一种用于减少导管中的阻力的方法。

    Methods for forming amorphous ultra-high molecular weight polyolefins and drag reducing compositions comprising amorphous ultra-high molecular weight polyolefins
    4.
    发明授权
    Methods for forming amorphous ultra-high molecular weight polyolefins and drag reducing compositions comprising amorphous ultra-high molecular weight polyolefins 有权
    用于形成无定形超高分子量聚烯烃和包含无定形超高分子量聚烯烃的减阻组合物的方法

    公开(公告)号:US06730752B2

    公开(公告)日:2004-05-04

    申请号:US09760544

    申请日:2001-01-16

    IPC分类号: C08F442

    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.

    摘要翻译: 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与催化剂体系接触,催化剂体系包括反应物混合物中的催化剂和活化剂(助催化剂)。 催化剂是过渡金属催化剂,优选三氯化钛,并且助催化剂可以单独或与二烷基卤化铝或卤代烃单独或组合地使用烷基铝氧烷。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的非结晶超高分子量聚α-烯烃。 在聚合过程中加入烷基铝氧烷提供非结晶,超高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布,从而产生优于已知减阻剂的减阻剂。 还公开了一种形成减阻剂的方法,其包含特性粘度为约10dL / g的非结晶,超高分子量聚α-烯烃和减少管道中的阻力的方法。

    Methods for forming amorphous ultra-high molecular weight
polyalphaolefin drag reducing agents using a halohydrocarbon
    5.
    发明授权
    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using a halohydrocarbon 有权
    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

    公开(公告)号:US6162773A

    公开(公告)日:2000-12-19

    申请号:US396247

    申请日:1999-09-15

    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.

    摘要翻译: 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与催化剂体系接触,催化剂体系包括反应物混合物中的催化剂和活化剂(助催化剂)。 催化剂是过渡金属催化剂,优选三氯化钛,并且助催化剂可以单独或与二烷基卤化铝或卤代烃单独或组合地使用烷基铝氧烷。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的非结晶超高分子量聚α-烯烃。 在聚合过程中加入烷基铝氧烷提供非结晶,超高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布,从而产生优于已知减阻剂的减阻剂。 还公开了一种形成减阻剂的方法,其包含特性粘度为约10dL / g的非结晶,超高分子量聚α-烯烃和减少管道中的阻力的方法。

    Composition of and process for forming polyalphaolefin drag reducing
agents
    6.
    发明授权
    Composition of and process for forming polyalphaolefin drag reducing agents 失效
    形成聚α-烯烃减阻剂的组成和工艺

    公开(公告)号:US5869570A

    公开(公告)日:1999-02-09

    申请号:US619840

    申请日:1996-03-19

    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 alphaolefin monomers with catalyst particles in a polymerization mixture that includes a hydrocarbon solvent. The polymerization of the alphaolefin monomers produces polyalphaolefin drag reducing agents having an inherent viscosity of at least 10 dL/g. During polymerization of the polyalphaolcfin monomers, localized micelles compromising high molecular weight polyalphaolefin polymer are formed in micellar zones around the catalyst particles. The polymerization is conducted in the presence of a viscosity reducing agent that includes a substantially hydrophobic dispersant. The viscosity reducing agent is present in an amount sufficient to reduce the viscosity of the reaction mixture and disperse the localized micelles. The addition of the dispersant during the polymerization process provides for high molecular weight polyalphaolefin and a more uniform molecular weight distribution of the resulting polyalphaolefin. A process of forming a polyalphaolefin drag reducing agent in one or more polymerization reactors and a process for reducing drag in a conduit are also disclosed.

    摘要翻译: 公开了包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与包含烃溶剂的聚合混合物中的催化剂颗粒接触。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的聚α烯烃减阻剂。 在聚α烯烃单体聚合期间,在催化剂颗粒周围的胶束区域中形成了损害高分子量聚α-烯烃聚合物的局域化胶束。 聚合反应在包含基本上疏水性分散剂的粘度降低剂的存在下进行。 降粘剂的存在量足以降低反应混合物的粘度并分散局部胶束。 在聚合过程中加入分散剂提供了高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布。 还公开了在一个或多个聚合反应器中形成聚α-烯烃减阻剂的方法和减少管道中的阻力的方法。

    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using non-metallocene catalysts and alkylaluminoxane
    7.
    发明授权
    Methods for forming amorphous ultra-high molecular weight polyalphaolefin drag reducing agents using non-metallocene catalysts and alkylaluminoxane 有权
    使用非金属茂催化剂和烷基铝氧烷形成无定形超高分子量聚α-烯烃减阻剂的方法

    公开(公告)号:US06242395B1

    公开(公告)日:2001-06-05

    申请号:US09396285

    申请日:1999-09-15

    IPC分类号: C10M14306

    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.

    摘要翻译: 公开了一种包含用作减阻剂的聚α-烯烃的组合物和用作制备用作减阻剂的聚α-烯烃的方法。 该方法包括使α-烯烃单体与催化剂体系接触,催化剂体系包括反应物混合物中的催化剂和活化剂(助催化剂)。 催化剂是过渡金属催化剂,优选三氯化钛,并且助催化剂可以单独或与二烷基卤化铝或卤代烃单独或组合地使用烷基铝氧烷。 α-烯烃单体的聚合产生具有至少10dL / g的特性粘度的非结晶超高分子量聚α-烯烃。 在聚合过程中加入烷基铝氧烷提供非结晶,超高分子量聚α-烯烃和所得聚α-烯烃的更均匀的分子量分布,从而产生优于已知减阻剂的减阻剂。 还公开了一种形成减阻剂的方法,其包含特性粘度为约10dL / g的非结晶,超高分子量聚α-烯烃和减少管道中的阻力的方法。