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1. 发明公开

EP0128661A1 Polymer suspensions 无效
标题翻译： Polymersuspensionen。
公开(公告)号：EP0128661A1
公开(公告)日：1984-12-19
申请号：EP84303126.1
申请日：1984-05-09
申请人： ALLIED COLLOIDS LIMITED
发明人： Langley, John , Symes, Ken Charles , Flesher, Peter
IPC分类号： C08J3/02 , E21B43/25
CPC分类号： C09K8/905 , C08J3/09 , C08J2300/14 , C08L5/00 , C09K8/32 , C09K8/588 , Y10S507/936
摘要： Polysaccharide is provided as a fluid composition that is a dispersion of the polysaccharide in oil and that contains a dispersion promoter selected from surfactants and stabilisers. The dispersion is generally a stable flocculated dispersion. It is generally made by dispersing an aqueous polysaccharide solution having a consistency index of about 20,000 cps in oil in the presence of dispersion promoter and then drying the dispersion. The oil generally comprises volatile and non-volatile components such that the drying can be by azeotroping. The dispersion promoters are generally selected from amphiphatic copolymers and surfactants having HLB at 20°C above 6.5 but which serve as water in oil dispersing agents during the formation of the dispersion. Aqueous solutions of the polysaccharide can be made by dispersing the fluid composition in water. These aqueous solutions are of particular value in methods of enhanced oil recovery.
摘要翻译：提供多糖作为流体组合物，其是多糖在油中的分散体，并且含有选自表面活性剂和稳定剂的分散促进剂。分散体通常是稳定的絮凝分散体。通常在分散促进剂的存在下，将稠度指数为约20,000cps的水性多糖溶液分散在油中，然后干燥该分散体。油通常包含挥发性和非挥发性组分，使得干燥可以通过共沸。分散促进剂通常选自具有高于6.5的20℃下的HLB的两亲性共聚物和表面活性剂，但在形成分散体期间用作油分散剂中的水。多糖的水溶液可以通过将流体组合物分散在水中来制备。这些水溶液在提高采油的方法中是特别有价值的。

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