发明授权
US09315404B2 Process for reducing inorganics from anionic surfactant solutions
有权
从阴离子表面活性剂溶液中降低无机物的方法
- 专利标题: Process for reducing inorganics from anionic surfactant solutions
- 专利标题(中): 从阴离子表面活性剂溶液中降低无机物的方法
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申请号: US13989929申请日: 2011-12-05
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公开(公告)号: US09315404B2公开(公告)日: 2016-04-19
- 发明人: Mark R. Smit , Edward D. Daugs , Raymond M. Collins
- 申请人: Mark R. Smit , Edward D. Daugs , Raymond M. Collins
- 申请人地址: US MI Midland
- 专利权人: Dow Global Technologies LLC
- 当前专利权人: Dow Global Technologies LLC
- 当前专利权人地址: US MI Midland
- 国际申请: PCT/US2011/063316 WO 20111205
- 国际公布: WO2012/078521 WO 20120614
- 主分类号: C07C309/00
- IPC分类号: C07C309/00 ; C02F9/00 ; B01D61/02 ; C07C303/44
摘要:
A process comprising contacting deionized water with one or more Strecker sulfonation reaction products of one or more halogenated alkyl ethers in the presence of sulfite, wherein the one or more Strecker sulfonation reaction products each comprise one or more inorganic salts on a dry basis and one or more surfactant components, form a filtration mixture; loading the filtration mixture into a high pressure filtration system containing a membrane having a membrane molecular weight cutoff allowing preferential passage of the inorganic salts, for example, of greater than or equal to 200 Daltons; wherein the high pressure filtration system is operated at a pressure greater than ambient pressure and is configured to cause crossflow of the filtration mixture along a surface of the membrane resulting in a permeate solution which substantially passes through the membrane and a retentate solution which substantially does not pass through the membrane; wherein the permeate comprises less than or equal to 15 weight percent surfactant component, based on the weight of the filtration mixture is provided.
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