发明名称 |
ANTISCALANT COMPOUND AND METHODS OF MAKING AND USING THE SAME |
摘要 |
The antiscalant compound is a dianionic polyelectrolyte (DAPE), namely, poly[disodium 3-(N,N-diallylamino)propanephosphonate]. The cationic polyelectrolyte (CPE) polydiallyl(diethylphosphonato)propylammonium chloride is synthesized by cyclopolymerization of the monomer. The CPE contains a pendant having a three-carbon spacer separating the diethylphosphonate and NH+. Upon acidic hydrolysis of the phosphonate esters, the CPE was converted into a pH-responsive polyzwitterionic acid (PZA), poly[3-(N,N-diallylammonio)propanephosphonic acid], which was converted to DAPE poly[disodium 3-(N,N-diallylamino)propanephosphonate] and to a zwitterionic/anionic polyelectrolyte (ZAPE) poly[sodium 3-(N,N-diallylammonio)propanephosphonate]. The solution properties of the polymers were correlated to the structurally similar polyzwitterion (PZ) having monoethylphosphonate and NH+ groups. Evaluation of the antiscalant properties of the DAPE using concentrated brines revealed that the DAPE at a concentration of 10 ppm is very effective in inhibiting the formation of calcium sulfate scale, particularly in reverse osmosis plants. |
申请公布号 |
US2015144556(A1) |
申请公布日期 |
2015.05.28 |
申请号 |
US201314091303 |
申请日期 |
2013.11.26 |
申请人 |
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY ;KING FAHD UNIVERSITY OF PETROLEUM AND MENERALS |
发明人 |
ALI SHAIKH ASROF;KAZI IZZAT WAJIH;RAHMAN FAIZUR |
分类号 |
C02F5/14;C08F130/02;C02F1/44 |
主分类号 |
C02F5/14 |
代理机构 |
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代理人 |
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主权项 |
1. An antiscalant compound, comprising poly[disodium 3-(N,N-diallylamino)propanephosphonate]. |
地址 |
RIYADH SA |