发明名称 |
SUBSTITUTED CELLULOSE ACETATES AND USES THEREOF |
摘要 |
The present invention relates to substituted cellulose acetates and methods of use thereof. One embodiment of the present invention provides a drilling fluid having a base fluid and a viscosifier having a substituted cellulose acetate having a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group of sulfur, phosphorus, boron, and chlorine; where the nonmetal is present in at least about 0.01% by weight of the substituted cellulose acetate. |
申请公布号 |
EP2838971(A1) |
申请公布日期 |
2015.02.25 |
申请号 |
EP20130741471 |
申请日期 |
2013.01.23 |
申请人 |
CELANESE ACETATE LLC |
发明人 |
COMBS, MICHAEL, T.;GARRETT, THOMAS, S. |
分类号 |
E21B43/22;C09D101/12;C09K8/035;E21B43/00 |
主分类号 |
E21B43/22 |
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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