首页>
外国专利>
Grafting Polymerization of Guar and Other Polysaccharides by Electron Beams
Grafting Polymerization of Guar and Other Polysaccharides by Electron Beams
展开▼
机译:电子束对瓜尔胶和其他多糖的接枝聚合
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method of grafting galactomannan-type polysaccharide polymers, preferably guar, to a functional group by irradiation with high energy electron beams in the presence of an unsaturated monomer-compressing the described functional group. The method may include the depolymerization of the grafted polymer to a pre-selected low molecular weight. The preferred galactomannans for treatment according to this method are guar gum, guar splits and hydroxypropyl guar. In a preferred embodiment the guar gum is also depolymerized, preferably to a molecular weight of below about 700,00 Daltons, and most preferably to a molecular weight of between about 100,00 Daltons to about 250,00 Daltons. The depolymerized guar most preferably has a polydispersity of less than about 3.0 and is useful in oil well fracturing to enhance oil production.
展开▼