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    • 8. 发明授权
    • Polymerizable cationic visco-elastic monomer fluids
    • 可聚合的阳离子粘弹性单体流体
    • US5093448A
    • 1992-03-03
    • US537839
    • 1990-06-13
    • Dennis G. Peiffer
    • Dennis G. Peiffer
    • C07C65/03C07C211/63C08F26/02C09K3/00C09K8/12C09K8/88
    • C09K8/882C07C211/63C07C65/03C08F26/02C09K3/00C09K8/12
    • The synthesis of a novel family of cationic monomers capable of forming viscoelastic fluids are described within. These monomers are formed primarily through the reaction of allyl halides and dimethyl alkylamines. The rheological properties of the fluids can be dramatically modified with changes in alkyl length and/or counterion structure. In addition, it is noted that these viscoelastic fluids have properties quite similar to conventional polymer solutions even though the former structures are held together through physical forces and not through chemical bonding as in the latter materials. In addition, the properties of this unique family of cationic monomers are capable of forming viscoelastic fluids in high brine solutions. Even though the counterion attached to the monomer contributes greatly to the rheological properties, addition of soluble acid, bases and salts do not destroy (through ion exchange mechanisms) the viscoelastic properties of these fluids.
    • 介绍了能形成粘弹性流体的新型阳离子单体家族的合成。 这些单体主要通过烯丙基卤化物和二甲基烷基胺的反应形成。 可以用烷基长度和/或抗衡离子结构的变化来显着地改变流体的流变性质。 另外,应注意的是,这些粘弹性流体具有与常规聚合物溶液非常相似的性质,即使前者的结构通过物理力而不是通过化学粘合而保持在一起,如同在后一种材料中那样。 此外,这种独特的阳离子单体族的性质能够在高盐水溶液中形成粘弹性流体。 尽管附着于单体的抗衡离子对流变特性有很大的贡献,但是添加可溶性酸,碱和盐不会破坏(通过离子交换机理)这些流体的粘弹性。
    • 9. 发明授权
    • Interfacial viscosification of aqueous solutions utilizing interpolymer
complex
    • 使用互聚物复合物的水溶液的界面粘度
    • US4942189A
    • 1990-07-17
    • US387184
    • 1989-07-31
    • Dennis G. PeifferRobert D. LundbergIlan Duvdevani
    • Dennis G. PeifferRobert D. LundbergIlan Duvdevani
    • C08J3/00C08J3/07C08J3/09
    • C08J3/07C08J3/005C08J3/091Y10S524/924
    • The present invention relates to a process for the viscosification of an aqueous liquid which includes the steps of forming a solvent system of an organic liquid or oil and a polar cosolvent, the polar cosolvent being less than about 15 weight percent of the solvent system, a viscosity of the solvent system being less than about 1,000 cps; forming an interpolymer complex of neutralized sulfonated polymer (water insoluble) and copolymer of styrene/vinylpyridine in the solvent system to form a solution, a concentration of the water insoluble interpolymer complex polymer in the solution being about 0.01 to about 0.5 weight percent, a viscosity of the solution being less than about 200 cps; the admixing or contacting said solution with about 5 to about 500 volume percent water, the water being immiscible with the organic liquid and the polar cosolvent and interpolymer complex transferring from the organic liquid to the water phase, thereby causing the water phase to gel (i.e., thicken). The large increase in viscosity of the aqueous phase is directly attributed to the formation of a large number of minute water-filled particles dispersed in the continuous aqueous phase.
    • 本发明涉及一种水性液体的增稠方法,其包括形成有机液体或油和极性助溶剂的溶剂体系的步骤,极性助溶剂小于溶剂体系的约15重量%, 溶剂体系的粘度小于约1,000cps; 在溶剂体系中形成中和磺化聚合物(水不溶性)和苯乙烯/乙烯基吡啶的共聚物的互聚物络合物以形成溶液,溶液中水不溶性互聚物络合物聚合物的浓度为约0.01至约0.5重量%,粘度 的溶液小于约200cps; 将所述溶液与约5至约500体积%的水混合或接触,所述水与有机液体和极性共溶剂和互聚物复合物不混溶,从有机液体转移到水相,从而使水相凝胶化(即 , 加粗)。 水相的粘度大幅度上升直接归因于形成分散在连续水相中的大量微小水分散的颗粒。