SE7503430L - - Google Patents
Info
- Publication number
- SE7503430L SE7503430L SE7503430A SE7503430A SE7503430L SE 7503430 L SE7503430 L SE 7503430L SE 7503430 A SE7503430 A SE 7503430A SE 7503430 A SE7503430 A SE 7503430A SE 7503430 L SE7503430 L SE 7503430L
- Authority
- SE
- Sweden
- Prior art keywords
- copolymer
- solution
- polyether
- mol
- substrate
- Prior art date
Links
- 239000012528 membrane Substances 0.000 abstract 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 abstract 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 2
- 239000004721 Polyphenylene oxide Substances 0.000 abstract 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 239000006184 cosolvent Substances 0.000 abstract 2
- 239000004417 polycarbonate Substances 0.000 abstract 2
- 229920000515 polycarbonate Polymers 0.000 abstract 2
- 229920000570 polyether Polymers 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 abstract 1
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 abstract 1
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 229920001400 block copolymer Polymers 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/50—Polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0011—Casting solutions therefor
Abstract
1500937 Polycarbonate polyether copolymer membranes UNITED STATES GOVERNMENT OF 28 Feb 1975 [26 March 1974] 8359/75 Heading B5B The membranes are formed by casting on to a substrate a solution of a polyether-polycarbonate block copolymer containing 5-35% by wt. of polyether component and a watermiscible organic solvent together with a co-solvent acting as a swelling agent, partially drying the film, immersing the film in water to form a gelled membrane and stripping the gelled membrane from the substrate. The copolymer has a mol. wt. of 50,000 to 750,000 and is prepared from bisphenol A and polyethylene glycol (mol. wt. 600-6000). The casting solution is preferably a 1-20% by wt. solution in 1,3-dioxolane containing 10-75% by wt. of the copolymer of a co-solvent such as DMSO, DMF or pyridine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45493974A | 1974-03-26 | 1974-03-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7503430L true SE7503430L (en) | 1975-09-27 |
| SE407583B SE407583B (en) | 1979-04-02 |
Family
ID=23806700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7503430A SE407583B (en) | 1974-03-26 | 1975-03-25 | BY WATER PHASE INVERSION TECHNOLOGY MANUFACTURED POLYCARBONATE MEMBRANE AND CORRESPONDING MANUFACTURING PROCEDURE |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS5228826B2 (en) |
| BE (1) | BE826775A (en) |
| CA (1) | CA1062413A (en) |
| CH (1) | CH594434A5 (en) |
| DK (1) | DK163482C (en) |
| FR (1) | FR2265807B1 (en) |
| GB (1) | GB1500937A (en) |
| IT (1) | IT1030266B (en) |
| NL (1) | NL172920C (en) |
| NO (1) | NO135162C (en) |
| SE (1) | SE407583B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1107467A (en) * | 1976-03-19 | 1981-08-25 | Paul A. Cantor | Polycarbonate membranes for use in hemodialysis |
| US4069151A (en) * | 1976-03-31 | 1978-01-17 | C. R. Bard, Inc. | Thin polycarbonate membranes for use in hemodialysis |
| DE2932761A1 (en) * | 1979-08-13 | 1981-02-26 | Akzo Gmbh | POLYCARBONATE-POLYAETHER-COPOLYMER MEMBRANE |
| SE423106B (en) * | 1980-07-25 | 1982-04-13 | Gambro Dialysatoren | PLASMAFERES MEMBRANE AND WAY TO MANUFACTURE THIS |
| EP0046816A1 (en) * | 1980-09-01 | 1982-03-10 | Gambro, Inc. | Polycarbonate hemofiltration membrane and method of hemofiltering using such a membrane |
| DE3069709D1 (en) * | 1980-09-01 | 1985-01-10 | Gambro Inc | Dry polycarbonate membrane and process of manufacture |
| SE446505B (en) * | 1982-11-16 | 1986-09-22 | Gambro Dialysatoren | MEMBRANE AND WAY TO MAKE THIS |
| EP0135760A1 (en) * | 1983-08-19 | 1985-04-03 | Bayer Ag | Polyether-polycarbonates for dialysis-membranes |
| US20080143014A1 (en) * | 2006-12-18 | 2008-06-19 | Man-Wing Tang | Asymmetric Gas Separation Membranes with Superior Capabilities for Gas Separation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945926A (en) * | 1971-10-18 | 1976-03-23 | Chemical Systems, Inc. | Integral microporous high void volume polycarbonate membranes and a dry process for forming same |
| US3901810A (en) * | 1972-09-21 | 1975-08-26 | Calgon Corp | Ultrafiltration membranes |
-
1975
- 1975-02-28 GB GB8359/75A patent/GB1500937A/en not_active Expired
- 1975-03-04 IT IT67549/75A patent/IT1030266B/en active
- 1975-03-07 FR FR7507225A patent/FR2265807B1/fr not_active Expired
- 1975-03-10 DK DK096275A patent/DK163482C/en active
- 1975-03-11 NL NLAANVRAGE7502865,A patent/NL172920C/en not_active IP Right Cessation
- 1975-03-17 BE BE154410A patent/BE826775A/en not_active IP Right Cessation
- 1975-03-19 CH CH353175A patent/CH594434A5/xx not_active IP Right Cessation
- 1975-03-19 CA CA222,510A patent/CA1062413A/en not_active Expired
- 1975-03-24 NO NO751026A patent/NO135162C/no unknown
- 1975-03-25 SE SE7503430A patent/SE407583B/en not_active IP Right Cessation
- 1975-03-26 JP JP50036697A patent/JPS5228826B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO751026L (en) | 1975-09-29 |
| DK163482B (en) | 1992-03-09 |
| NL7502865A (en) | 1975-09-30 |
| FR2265807A1 (en) | 1975-10-24 |
| CA1062413A (en) | 1979-09-18 |
| CH594434A5 (en) | 1978-01-13 |
| DK96275A (en) | 1975-09-27 |
| JPS5228826B2 (en) | 1977-07-28 |
| DK163482C (en) | 1992-07-27 |
| NO135162B (en) | 1976-11-15 |
| FR2265807B1 (en) | 1979-02-23 |
| GB1500937A (en) | 1978-02-15 |
| JPS5179172A (en) | 1976-07-09 |
| NL172920C (en) | 1983-11-16 |
| BE826775A (en) | 1975-09-17 |
| IT1030266B (en) | 1979-03-30 |
| NO135162C (en) | 1977-02-23 |
| SE407583B (en) | 1979-04-02 |
| NL172920B (en) | 1983-06-16 |
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| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |
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