发明申请
- 专利标题： REVERSIBLE MICROCAPSULE FILTER CAKE
- 专利标题（中）： 可逆微波过滤器
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申请号： PCT/US2016/013148申请日： 2016-01-13
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公开(公告)号： WO2016115198A1公开(公告)日： 2016-07-21
- 发明人: BIAO, Duan
- 申请人： ENCAPSYS, LLC , BIAO, Duan
- 申请人地址： 1401 N. Rankin St. Appleton, WI 54911 US
- 专利权人： ENCAPSYS, LLC,BIAO, Duan
- 当前专利权人： ENCAPSYS, LLC,BIAO, Duan
- 当前专利权人地址： 1401 N. Rankin St. Appleton, WI 54911 US
- 代理机构： ENCAPSYS, LLC
- 优先权： US14/599,014 20150116
- 主分类号： B01D37/03
- IPC分类号： B01D37/03 ; B01J13/10 ; B01J13/20
摘要：
The invention teaches a method of efficiently dewatering a microcapsule slurry to form a water re- suspendable filter cake of microcapsules. The process comprises providing an aqueous slurry of microcapsules dispersed in an aqueous solution; adding an agglomeration agent and dispersing the agglomeration agent into the aqueous slurry; adjusting the pH to a pH level sufficient to agglomerate the dispersed microcapsules; and filtering the aqueous slurry of microcapsules by gravity, vacuum or pressure filtration to thereby form a filter cake of dewatered microcapsules. The agglomeration agent is sodium polyphosphate, sodium tetrapolyphosphate, sodium hexametaphosphate, and/or sodium tripolyphosphate; or with anionic microcapsules or coatings even alkaline earth metal salts such as magnesium chloride, calcium chloride or barium chloride, or even aluminum salt such as aluminum chloride.
