发明名称 |
REVERSE OSMOSIS MEMBRANE FOR WASTEWATER TREATMENT |
摘要 |
To provide a reverse osmosis membrane where both salt rejection rate and water permeability required for wastewater treatment are achieved in a high level in spite of using the materials having excellent resistance to chemicals (resistance to alkali and to chlorine).;A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B−0.36)≦A<(B−0.30):;wherein X is H or a univalent cationic species and n is an integer of 10 to 50. |
申请公布号 |
US2015136692(A1) |
申请公布日期 |
2015.05.21 |
申请号 |
US201214117402 |
申请日期 |
2012.06.14 |
申请人 |
Higashi Masao;Morita Junsuke;Kitagawa Tooru |
发明人 |
Higashi Masao;Morita Junsuke;Kitagawa Tooru |
分类号 |
B01D71/68 |
主分类号 |
B01D71/68 |
代理机构 |
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代理人 |
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主权项 |
1. A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B−0.36)≦A<(B−0.30): wherein X is H or a univalent cationic species and n is an integer of 10 to 50. |
地址 |
Ohtsu-shi JP |