发明公开
EP2651827A1 LIGNOSULFONATE GRAFTS WITH AN ACID, ESTER AND NON-IONIC MONOMERS
审中-公开
LIGNOSULFONATIMPLANTATE与酸酯和NOT离子单体
- 专利标题： LIGNOSULFONATE GRAFTS WITH AN ACID, ESTER AND NON-IONIC MONOMERS
- 专利标题（中）： LIGNOSULFONATIMPLANTATE与酸酯和NOT离子单体
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申请号： EP11802057.7申请日： 2011-12-16
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公开(公告)号： EP2651827A1公开(公告)日： 2013-10-23
- 发明人: HOLT, Stuart , RODRIGUES, Klin A. , SANDERS, Jannifer
- 申请人： Akzo Nobel Chemicals International B.V.
- 申请人地址： Stationsstraat 77 3811 MH Amersfoort NL
- 专利权人： Akzo Nobel Chemicals International B.V.
- 当前专利权人： Akzo Nobel Chemicals International B.V.
- 当前专利权人地址： Stationsstraat 77 3811 MH Amersfoort NL
- 代理机构： Akzo Nobel IP Department
- 优先权： US201061424179P 20101217; EP11157421 20110309
- 国际公布： WO2012080465 20120621
- 主分类号： C01D3/26
- IPC分类号： C01D3/26 ; C05D1/00 ; C05D1/02 ; C05D9/02 ; C05G3/00 ; C07C41/03 ; C07C43/11 ; C07C51/41 ; C07C51/487 ; C07C59/255 ; C07C305/10 ; C09D5/02 ; C09D167/00 ; C11D3/33 ; C11D17/00 ; C09K8/40 ; C09K8/22 ; C09K8/528
摘要：
The present invention generally relates to controlling the viscosity of water-based mud systems. More particularly, the present invention relates to methods and compositions for thinning and deflocculating aqueous based fluids used in well drilling and other well operations in subterranean formations, especially subterranean formations containing oil and/or gas. The invention also relates to a drilling fluid thinner and/or dispersant having improved temperature stability, dispersing properties and "solids contamination" tolerance.
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