Method for inhibiting hydrate formation
    3.
    依法登记的发明
    Method for inhibiting hydrate formation 失效
    抑制水合物形成的方法

    公开(公告)号:USH1749H

    公开(公告)日:1998-09-01

    申请号:US306568

    申请日:1994-09-15

    IPC分类号: C09K8/52 C10L3/10 C07C9/00

    CPC分类号: C09K8/52 C09K2208/22 C10L3/10

    摘要: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The method uses a mixture comprising a first additive and a second additive. The mixture produces a synergistic hydrate inhibition effect. The first additive is selected from the class of substantially water soluble polymers. The second additive is selected from the class of ionic or non-ionic organic compounds which have a polar part and nonpolar part with the nonpolar part having an alkyl, alkenyl, or alkynyl group with 12 or fewer carbon atoms.

    摘要翻译: 公开了一种抑制在具有水合物形成成分的流体中形成笼形水合物的方法。 更具体地说,该方法可用于处理在管道中输送的天然气等石油流体流,以抑制管道中的水合物限制。 该方法使用包含第一添加剂和第二添加剂的混合物。 该混合物产生协同的水合物抑制作用。 第一种添加剂选自基本上水溶性聚合物的类别。 第二种添加剂选自具有极性部分和非极性部分的离子或非离子有机化合物,其中非极性部分具有12个或更少碳原子的烷基,烯基或炔基。

    Method of processing polyethylene
    9.
    发明授权
    Method of processing polyethylene 失效
    加工聚乙烯的方法

    公开(公告)号:US6107454A

    公开(公告)日:2000-08-22

    申请号:US906873

    申请日:1997-08-06

    IPC分类号: C08K5/19 C08K5/41 C08K5/42

    CPC分类号: C08K5/19 C08K5/41

    摘要: Melt processed linear polyethylenes are shown to exhibit improved processability through the addition of certain surfactants. Among the melt processing parameters improved are reduced head pressure, reduced torque, reduced motor load, reduced or eliminated melt fracture, or combinations of these parameters. The surfactants can be chosen from a non-aromatic alkyl sulfonate or sulfate salt wherein a cation of the salt is selected from the group consisting of Na, K, Li, and other alkali cations and a quaternary ammonium cations, said surfactant being essentially free of halogens.

    摘要翻译: 熔体加工的线性聚乙烯通过加入某些表面活性剂显示出改善的加工性能。 改进的熔体加工参数中,头部压力降低,扭矩减小,电机负载减少,熔体断裂减少或消除,或这些参数的组合。 表面活性剂可以选自非芳族烷基磺酸盐或硫酸盐,其中盐的阳离子选自Na,K,Li和其它碱阳离子和季铵阳离子,所述表面活性剂基本上不含 卤素