GB817843A - Improvements in and relating to anionic permselective membranes - Google Patents
Improvements in and relating to anionic permselective membranesInfo
- Publication number
- GB817843A GB817843A GB3902/57A GB390257A GB817843A GB 817843 A GB817843 A GB 817843A GB 3902/57 A GB3902/57 A GB 3902/57A GB 390257 A GB390257 A GB 390257A GB 817843 A GB817843 A GB 817843A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- parchment paper
- dicyanodiamide
- formaldehyde
- impregnated
- 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
- 125000000129 anionic group Chemical group 0.000 title abstract 3
- 239000012528 membrane Substances 0.000 title abstract 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical class NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 abstract 5
- 239000011088 parchment paper Substances 0.000 abstract 5
- 239000000243 solution Substances 0.000 abstract 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 4
- 229910002651 NO3 Inorganic materials 0.000 abstract 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 4
- 239000007864 aqueous solution Substances 0.000 abstract 4
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 abstract 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 abstract 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 abstract 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 3
- 239000004202 carbamide Substances 0.000 abstract 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- 229920000877 Melamine resin Polymers 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 239000001099 ammonium carbonate Substances 0.000 abstract 2
- 235000012501 ammonium carbonate Nutrition 0.000 abstract 2
- 235000019270 ammonium chloride Nutrition 0.000 abstract 2
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 abstract 2
- 229940015043 glyoxal Drugs 0.000 abstract 2
- 239000004312 hexamethylene tetramine Substances 0.000 abstract 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 abstract 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 abstract 2
- 229960004011 methenamine Drugs 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000001912 cyanamides Chemical class 0.000 abstract 1
- 238000002386 leaching Methods 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
-
- 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
- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
In preparing anionic perm-selective membranes for use in the electrodialytic purification of saline water, parchment paper is impregnated, at room temperature, with an aqueous solution of pH 2.5 to 10.0, containing one or more guanidinium salts and formaldehyde, and then dried and cured at a temperature of, at least, 110 DEG C. Suitable guanidinium salts are the nitrate and chloride, e.g. mixed with the carbonate. The solution may also contain melamine, or, alternatively, dicyanodiamide mixed, e.g. with furfurol or glyoxal. Ammonium carbonate, chloride or nitrate may be added to the solution. Alternatively, parchment paper may be impregnated with an aqueous solution containing dicyanodiamide, hexamethylene-tetramine, formaldehyde, hydrochloric acid and, if desired, urea. The unimpregnated parchment paper may be swelled by treating it with strong orthophosphoric acid and then leaching out the acid. Specifications 750,220, 750,238, [both in Group XXXVI], 813,606, [Group VIII], and 813,607, [Group XXXVI], are referred to.ALSO:Parchment paper is impregnated, at room temperature, with an aqueous solution of pH 2.5 to 10.0 containing one or more guanidinium salts and formaldehyde and is then dried and cured at a temperature of, at least, 110 DEG C. to form an anionic perm-selective membrane. Suitable guanidinium salts are the nitrate and chloride, e.g. mixed with the carbonate. The solution may also contain melamine or, alternatively, dicyanodiamide mixed, e.g. with furfurol or glyoxal. Ammonium carbonate, chloride or nitrate may be added to the solution. Alternatively, parchment paper may be impregnated with an aqueous solution containing dicyanodiamide, hexamethylene - tetramine, formaldehyde, hydrochloric acid and, if desired, urea. It is stated that the presence in the impregnating solution of a derivative of cyanamide not containing the guanidine structure, e.g. urea, introduces cross-linkages. Specifications 750,220, 750,238, [both in Group XXXVI], 813,606, [Group VIII], and 813,607, [Group XXXVI], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA817843X | 1956-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817843A true GB817843A (en) | 1959-08-06 |
Family
ID=25575838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3902/57A Expired GB817843A (en) | 1956-08-03 | 1957-02-05 | Improvements in and relating to anionic permselective membranes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB817843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003098205A1 (en) * | 2002-05-21 | 2003-11-27 | Rhocraft Research And Development Ltd. | Ion exchange membranes and dissolved gas sensors |
-
1957
- 1957-02-05 GB GB3902/57A patent/GB817843A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003098205A1 (en) * | 2002-05-21 | 2003-11-27 | Rhocraft Research And Development Ltd. | Ion exchange membranes and dissolved gas sensors |
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