发明名称 |
MOLECULAR WEIGHT REDUCTION OF POLYSACCHARIDES BY ELECTRON BEAMS |
摘要 |
<p>A method of depolymerizing galactomannan-type polysaccharide polymers and xanthan, preferably galactomannans, to a pre-selected lower molecular weight by irradiation with high energy electron beams. 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 depolymerized preferably to a molecular weight of about 150,000 Daltons to about 200,000 Daltons. The depolymerized guar has a polydispersity of less than about 3.0 and is useful in oil well fracturing to enhance oil production.</p> |
申请公布号 |
WO2004000885(A2) |
申请公布日期 |
2003.12.31 |
申请号 |
WO2003US20015 |
申请日期 |
2003.06.24 |
申请人 |
RHODIA, INC. |
发明人 |
LIU, LEO, ZHAOQING;PRIOU, CHRISTIAN |
分类号 |
C08B37/00;C08F2/50;C09K8/58;C09K8/68;C09K8/90;(IPC1-7):C08B/ |
主分类号 |
C08B37/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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