发明授权
- 专利标题： Polyzwitterionic acid antiscalant compound
- 专利标题（中）： 聚两性离子酸防垢剂化合物
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申请号： US14141177申请日： 2013-12-26
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公开(公告)号： US09359458B2公开(公告)日： 2016-06-07
- 发明人: Shamsuddeen Abdullahi Haladu , Shaikh Asrof Ali
- 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
- 代理商 Richard C. Litman
- 主分类号： C08F26/04
- IPC分类号： C08F26/04 ; C08F126/04 ; C08F226/04 ; C02F5/12 ; C08F226/06 ; C08F226/02 ; C08F126/06 ; C08F28/02 ; C08F26/02 ; C08F128/02 ; C08F26/06 ; C08F126/02 ; C08F228/02 ; C11D1/88 ; C11D1/90 ; C11D1/92 ; C02F1/44 ; C02F103/08
摘要：
The polyzwitterionic acid antiscalant is an antiscalant for use in desalination plants and the like for inhibiting CaSO4 and SO42− scale precipitation. The polyzwitterionic acid (PZA) antiscalant has the following structural formula: In order to make the PZA antiscalant, N-carboethoxymethyl-3-(N,N-diallylamino)propanesulfonate, a zwitterionic monomer, is cyclopolymerized in aqueous solution using tert-butyl hydroperoxide (TBHP) to make an intermediate polyzwitterion (PZ). Acidic hydrolysis of the ester groups of the PZ is performed to produce the PZA antiscalant. Evaluation of the antiscalant properties of the PZA antiscalant using concentrated brines revealed that the PZA antiscalant, at a concentration of 10 ppm, is very effective in inhibiting the formation of calcium sulfate scale, particularly in reverse osmosis plants.
公开/授权文献
- US20150183903A1 POLYZWITTERIONIC ACID ANTISCALANT COMPOUND 公开/授权日：2015-07-02
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