GB1395530A - Integral microporous high void volume polycarbonate membranes and a dry process for forming same - Google Patents
Integral microporous high void volume polycarbonate membranes and a dry process for forming sameInfo
- Publication number
- GB1395530A GB1395530A GB4798572A GB4798572A GB1395530A GB 1395530 A GB1395530 A GB 1395530A GB 4798572 A GB4798572 A GB 4798572A GB 4798572 A GB4798572 A GB 4798572A GB 1395530 A GB1395530 A GB 1395530A
- Authority
- GB
- United Kingdom
- Prior art keywords
- integer
- polycarbonate
- void volume
- polymer
- solution
- 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.)
- Expired
Links
- 239000012528 membrane Substances 0.000 title abstract 4
- 229920000515 polycarbonate Polymers 0.000 title abstract 3
- 239000004417 polycarbonate Substances 0.000 title abstract 3
- 239000011800 void material Substances 0.000 title abstract 2
- 238000001035 drying Methods 0.000 title 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 229920000642 polymer Polymers 0.000 abstract 3
- 230000008961 swelling Effects 0.000 abstract 3
- 239000000080 wetting agent Substances 0.000 abstract 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-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
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229920001451 polypropylene glycol Polymers 0.000 abstract 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinyl group Chemical group C1(O)=CC(O)=CC=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 abstract 2
- BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical compound FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 abstract 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 abstract 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 abstract 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 abstract 1
- RHQDFWAXVIIEBN-UHFFFAOYSA-N Trifluoroethanol Chemical compound OCC(F)(F)F RHQDFWAXVIIEBN-UHFFFAOYSA-N 0.000 abstract 1
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 abstract 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 150000002373 hemiacetals Chemical class 0.000 abstract 1
- VBZWSGALLODQNC-UHFFFAOYSA-N hexafluoroacetone Chemical compound FC(F)(F)C(=O)C(F)(F)F VBZWSGALLODQNC-UHFFFAOYSA-N 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000001471 micro-filtration Methods 0.000 abstract 1
- 239000002736 nonionic surfactant Substances 0.000 abstract 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 abstract 1
- 229920005668 polycarbonate resin Polymers 0.000 abstract 1
- 239000004431 polycarbonate resin Substances 0.000 abstract 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000000108 ultra-filtration Methods 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
Abstract
1395530 Polycarbonate membranes CHEMICAL SYSTEMS Inc 18 Oct 1972 [18 Oct 1971] 47985/72 Heading B5B [Also in Division C3] Integral ultra- and micro-filtration membranes having a void volume greater than 50% are prepared from a polycarbonate or polycarbonate-polyalkylene oxide copolymer having a M.W. greater than 46,000 (e.g. up to 145,000), by a dry phase inversion process in which a solution of the polymer containing 3-10g. of polymer per 100 ml. of solution and including a swelling agent and a wetting agent is cast on a substrate and allowed to evaporate until the membrane is completely dry. The polymer is preferably a polycarbonate resin having the general formula wherein n is an integer between 180 and 600; x is an integer between 180 and 600; y is an integer between 1 and 6; z is an integer between 13 and 450; R is H-, (CH 3 ) 2 CH- or Ph-; R<SP>1</SP> is or a substituted derivative thereof; and R<SP>11</SP> is -CH 2 -CH 2 -, -CH 2 -CH(CH 3 )- or -[CH 2 CH 2 O] a -[CH(CH 3 )-CH 2 O-] c -[CH 2 CH 2 O] b where a and b are integers between 3 and 10 and c is an integer between 20 and 50. The casting solution solvent is preferably CH 2 Cl 2 , CHCl 3 , bis-dichloroethylene, MEK, THF, dioxane or mixtures thereof. The swelling agent is preferably resorcinol, trifluoroethanol, cyclohexanol, hexafluoroisopropanol, the hemiacetal formed by reaction of methanol with hexafluoroacetone or mixtures of one of the above with isopropanol. Suitable wetting agents are the non-ionic surfactants. In examples copolymers having M.W. within the stated range are prepared by reaction of methylene chloride/ pyridine solutions of bisphenol A and polyethylene oxide, polypropylene oxide or polyethylene oxide end-blocked polypropylene oxide with phosgene. The resultant copolymers and bisphenol A polycarbonate homopolymer are dissolved in casting solutions containing one of the above swelling and wetting agents, cast on to glass plates and allowed to evaporate to dryness.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19041571A | 1971-10-18 | 1971-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1395530A true GB1395530A (en) | 1975-05-29 |
Family
ID=22701253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4798572A Expired GB1395530A (en) | 1971-10-18 | 1972-10-18 | Integral microporous high void volume polycarbonate membranes and a dry process for forming same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5547921B2 (en) |
| CA (1) | CA991776A (en) |
| DE (1) | DE2251066A1 (en) |
| GB (1) | GB1395530A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025851A1 (en) * | 1979-08-13 | 1981-04-01 | Akzo Patente GmbH | Process for the production of polycarbonate-polyether block copolymers |
| US4308145A (en) * | 1976-03-19 | 1981-12-29 | United States Of America | Relatively thick polycarbonate membranes for use in hemodialysis |
| EP0135760A1 (en) * | 1983-08-19 | 1985-04-03 | Bayer Ag | Polyether-polycarbonates for dialysis-membranes |
| US4715960A (en) * | 1983-03-10 | 1987-12-29 | Exxon Research And Engineering Company | Method for the modification of polycarbonate membranes, the membranes produced by such method and their use |
| US5260129A (en) * | 1991-01-04 | 1993-11-09 | Bayer Aktiengesellschaft | Polyether/polycarbonate block copolymer coatings for plastic moldings |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5193786A (en) * | 1975-02-15 | 1976-08-17 | Makurokagatano chukuseni | |
| DE2613072B2 (en) * | 1976-03-26 | 1981-07-16 | Siemens AG, 1000 Berlin und 8000 München | Implantable electrode |
| DE2613052B2 (en) * | 1976-03-26 | 1981-07-23 | Siemens AG, 1000 Berlin und 8000 München | Implantable carbon electrode |
| JPS5827964B2 (en) * | 1979-12-27 | 1983-06-13 | 工業技術院長 | Manufacturing method of semipermeable membrane |
| JPS588511A (en) * | 1981-07-09 | 1983-01-18 | Toyobo Co Ltd | Selective separation membrane |
| DE4103680A1 (en) * | 1991-02-07 | 1992-08-13 | Agfa Gevaert Ag | COLOR ACCEPTOR ELEMENT FOR THERMAL SUBLIMATION PRINTING |
-
1972
- 1972-10-17 CA CA154,032A patent/CA991776A/en not_active Expired
- 1972-10-18 JP JP10437372A patent/JPS5547921B2/ja not_active Expired
- 1972-10-18 GB GB4798572A patent/GB1395530A/en not_active Expired
- 1972-10-18 DE DE2251066A patent/DE2251066A1/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308145A (en) * | 1976-03-19 | 1981-12-29 | United States Of America | Relatively thick polycarbonate membranes for use in hemodialysis |
| EP0025851A1 (en) * | 1979-08-13 | 1981-04-01 | Akzo Patente GmbH | Process for the production of polycarbonate-polyether block copolymers |
| DK154223B (en) * | 1979-08-13 | 1988-10-24 | Akzo Nv | PROCEDURE FOR CONTINUOUS PREPARATION OF POLYCARBONATE POLYAETER COPOLYMERS |
| US4715960A (en) * | 1983-03-10 | 1987-12-29 | Exxon Research And Engineering Company | Method for the modification of polycarbonate membranes, the membranes produced by such method and their use |
| EP0135760A1 (en) * | 1983-08-19 | 1985-04-03 | Bayer Ag | Polyether-polycarbonates for dialysis-membranes |
| US4563516A (en) * | 1983-08-19 | 1986-01-07 | Bayer Aktiengesellschaft | Polyether-polycarbonates for dialysis membranes |
| US5260129A (en) * | 1991-01-04 | 1993-11-09 | Bayer Aktiengesellschaft | Polyether/polycarbonate block copolymer coatings for plastic moldings |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2251066A1 (en) | 1973-04-26 |
| JPS5547921B2 (en) | 1980-12-03 |
| JPS4849681A (en) | 1973-07-13 |
| CA991776A (en) | 1976-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |