- 专利标题： Synthesis and evaluation of novel amido-amine cationic gemini surfactants containing flexible and rigid spacers
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申请号： US16281849申请日： 2019-02-21
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公开(公告)号： US11512045B2公开(公告)日： 2022-11-29
- 发明人: Syed M. Shakil Hussain , Muhammad Shahzad Kamal , Abdullah S. Sultan
- 申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- 申请人地址： SA Dhahran
- 专利权人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- 当前专利权人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- 当前专利权人地址： SA Dhahran
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 主分类号： C07C237/16
- IPC分类号： C07C237/16 ; C09K8/584 ; C07C381/06 ; C11D1/00 ; C07C233/36 ; E21B43/16 ; C07C233/38 ; C07C231/02
摘要：
The invention concerns synthesized amido-amine-based cationic gemini surfactants with flexible and rigid spacers and different hydrophobic. These gemini surfactants were prepared by modified procedure through amidation of long chain carboxylic acids using 3-(dimethylamino)-1-propylamine followed by treatment with halohydrocarbons and showed excellent thermal stability and surface properties useful for various oilfield applications such as enhanced oil recovery.
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