JP2009006315A5 - - Google Patents
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- Publication number
- JP2009006315A5 JP2009006315A5 JP2008133938A JP2008133938A JP2009006315A5 JP 2009006315 A5 JP2009006315 A5 JP 2009006315A5 JP 2008133938 A JP2008133938 A JP 2008133938A JP 2008133938 A JP2008133938 A JP 2008133938A JP 2009006315 A5 JP2009006315 A5 JP 2009006315A5
- Authority
- JP
- Japan
- Prior art keywords
- semipermeable membrane
- composite semipermeable
- organic compound
- producing
- functional layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012528 membrane Substances 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 13
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000002346 layers by function Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 239000011528 polyamide (building material) Substances 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 2
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 125000005429 oxyalkyl group Chemical group 0.000 claims description 2
- 125000004430 oxygen atoms Chemical group O* 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000004434 sulfur atoms Chemical group 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
Description
上記目的を達成するための本発明は、微多孔性支持膜上での重縮合により架橋ポリアミド機能層を形成させた複合半透膜を、特定構造の化合物と接触処理することによってポリアミド分離機能層を改質し、膜性能の向上を図るものであり、以下のとおり特定される。
（１） 微多孔性支持膜上に、多官能アミンと多官能カルボン酸誘導体とを重縮合させてなるポリアミド分離機能層を形成させることにより複合半透膜を製造した後、ポリアミド分離機能層に、下記一般式（１）で示される構造を有する有機化合物またはその有機化合物と酸との塩を接触させる処理を行うことを特徴とする複合半透膜の製造方法。
In order to achieve the above object, the present invention provides a polyamide separation functional layer by subjecting a composite semipermeable membrane in which a crosslinked polyamide functional layer is formed by polycondensation on a microporous support membrane to a compound having a specific structure. To improve the membrane performance, and is specified as follows.
(1) After producing a composite semipermeable membrane by forming a polyamide separation functional layer obtained by polycondensation of a polyfunctional amine and a polyfunctional carboxylic acid derivative on a microporous support membrane, The manufacturing method of the composite semipermeable membrane characterized by performing the process which contacts the salt of the organic compound which has a structure shown by following General formula (1), or its organic compound, and an acid .
（式（１）中、Ｘは酸素原子、硫黄原子、ＮＨ基のいずれかを表し、Ｒ１〜Ｒ４は水素原子、炭化水素基、オキシアルキル基のいずれかを表す。）
（２） 前記有機化合物の分子量が、５９以上１０００以下である上記（１）に記載の複合半透膜の製造方法。
（３） 前記有機化合物が、尿素、グアニジン及びチオ尿素から選ばれる少なくとも１種である（１）に記載の複合半透膜の製造方法。
（４） ２５℃、ｐＨ＝６．５、濃度０．２重量％の塩化ナトリウム水溶液を０．５ＭＰａの操作圧力で透過させたときの塩化ナトリウム除去率が９０％以上である複合半透膜の分離機能層を前記有機化合物と接触させる、上記（１）〜（３）の何れかに記載の複合半透膜の製造方法。
(In Formula (1), X represents an oxygen atom, a sulfur atom, or an NH group, and R 1 to R 4 represent any one of a hydrogen atom, a hydrocarbon group, and an oxyalkyl group.)
(2) The manufacturing method of the composite semipermeable membrane as described in said (1) whose molecular weight of the said organic compound is 59-1000.
(3) said organic compound is urea, guanidine and Chionyo fluorinated et al method for producing a composite semipermeable membrane according to at least one (1) to be selected.
(4) A composite semipermeable membrane having a sodium chloride removal rate of 90% or more when a sodium chloride aqueous solution of 25 ° C., pH = 6.5 and a concentration of 0.2% by weight is permeated at an operating pressure of 0.5 MPa. The method for producing a composite semipermeable membrane according to any one of (1) to (3), wherein the separation functional layer is brought into contact with the organic compound.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008133938A JP5131028B2 (en) | 2007-05-30 | 2008-05-22 | Manufacturing method of composite semipermeable membrane |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007142996 | 2007-05-30 | ||
| JP2007142996 | 2007-05-30 | ||
| JP2008133938A JP5131028B2 (en) | 2007-05-30 | 2008-05-22 | Manufacturing method of composite semipermeable membrane |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009006315A JP2009006315A (en) | 2009-01-15 |
| JP2009006315A5 true JP2009006315A5 (en) | 2011-06-30 |
| JP5131028B2 JP5131028B2 (en) | 2013-01-30 |
Family
ID=40321961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008133938A Expired - Fee Related JP5131028B2 (en) | 2007-05-30 | 2008-05-22 | Manufacturing method of composite semipermeable membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5131028B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009078218A (en) * | 2007-09-26 | 2009-04-16 | Toray Ind Inc | Method of manufacturing composite semi-permeable membrane |
| CN102512982B (en) * | 2012-01-11 | 2013-11-13 | 浙江理工大学 | Antibacterial oxidation-resistant composite reverse osmosis membrane |
| US9211507B2 (en) | 2012-11-21 | 2015-12-15 | Lg Chem, Ltd. | Water-treatment separating membrane of high flux having good chlorine resistance and method of manufacturing the same |
| CN104039430B (en) | 2012-11-21 | 2016-06-01 | Lg化学株式会社 | There is high-throughput water treatment separatory membrane and its preparation method of good resistance to chlorine |
| CN104548945A (en) * | 2013-10-23 | 2015-04-29 | 中国石油化工股份有限公司 | After-treatment method for increasing flux of ultra-filtration membrane |
| CN103933878A (en) * | 2014-04-25 | 2014-07-23 | 浙江理工大学 | High-flux composite reverse osmosis membrane |
| TWI652106B (en) * | 2017-04-19 | 2019-03-01 | 南韓商Ｌｇ化學股份有限公司 | Water treatment membrane and preparation method thereof |
| CN114432901B (en) * | 2020-11-02 | 2023-04-11 | 中国石油化工股份有限公司 | Composite membrane with acid resistance and alkali resistance as well as preparation method and application thereof |
| CN114181389B (en) * | 2021-05-31 | 2023-07-04 | 杭州聚合顺新材料股份有限公司 | Antibacterial nylon 6 containing guanidine group and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6354905A (en) * | 1986-08-25 | 1988-03-09 | Toray Ind Inc | Production of semiosmosis composite membrane |
| CA1318091C (en) * | 1987-01-15 | 1993-05-25 | Filmtec Corporation | Reverse osmosis membranes |
| US5755964A (en) * | 1996-02-02 | 1998-05-26 | The Dow Chemical Company | Method of treating polyamide membranes to increase flux |
| JP2000334280A (en) * | 1999-05-27 | 2000-12-05 | Nitto Denko Corp | Production of multiple reverse osmosis membrane |
| JP4525296B2 (en) * | 2003-12-03 | 2010-08-18 | 東レ株式会社 | Manufacturing method of composite semipermeable membrane |
| JP2006021094A (en) * | 2004-07-07 | 2006-01-26 | Toray Ind Inc | Compound semi-permeable membrane and its manufacturing method |
-
2008
- 2008-05-22 JP JP2008133938A patent/JP5131028B2/en not_active Expired - Fee Related
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