GB1028461A - Cellulosic films for use as semi-permeable membranes in permeation processes - Google Patents
Cellulosic films for use as semi-permeable membranes in permeation processesInfo
- Publication number
- GB1028461A GB1028461A GB20948/62A GB2094862A GB1028461A GB 1028461 A GB1028461 A GB 1028461A GB 20948/62 A GB20948/62 A GB 20948/62A GB 2094862 A GB2094862 A GB 2094862A GB 1028461 A GB1028461 A GB 1028461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- semi
- films
- cellulose
- permeable membranes
- hydrazine
- 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 1
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 6
- 229920002678 cellulose Polymers 0.000 abstract 2
- 239000001913 cellulose Substances 0.000 abstract 2
- 229920002284 Cellulose triacetate Polymers 0.000 abstract 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000004627 regenerated cellulose Substances 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
-
- 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
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
-
- 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
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0093—Chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
1,028,461. Cellulosic semi-permeable films. S. R. M. ELLIS. May 30, 1963 [May 31, 1962], No. 20948/62. Heading B5B. The selective permeability characteristics of films consisting wholly or partly of regenerated cellulose or of cellulose derivatives is improved by treating the films with hydrazine, e.g. with an aqueous solution of hydrazine containing 10-25% by weight of hydrazine at a temperature of 40 to 70 C. The cellulose derivative may be secondary acetone-soluble cellulose acetate or cellulose triacetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20948/62A GB1028461A (en) | 1962-05-31 | 1962-05-31 | Cellulosic films for use as semi-permeable membranes in permeation processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20948/62A GB1028461A (en) | 1962-05-31 | 1962-05-31 | Cellulosic films for use as semi-permeable membranes in permeation processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1028461A true GB1028461A (en) | 1966-05-04 |
Family
ID=10154540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20948/62A Expired GB1028461A (en) | 1962-05-31 | 1962-05-31 | Cellulosic films for use as semi-permeable membranes in permeation processes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1028461A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0042517A1 (en) * | 1980-06-12 | 1981-12-30 | Akzo GmbH | Method for the production of a cellulose dialysis membrane |
-
1962
- 1962-05-31 GB GB20948/62A patent/GB1028461A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0042517A1 (en) * | 1980-06-12 | 1981-12-30 | Akzo GmbH | Method for the production of a cellulose dialysis membrane |
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