GB1536227A - Composite semi-permeable membranes and methods of making same - Google Patents
Composite semi-permeable membranes and methods of making sameInfo
- Publication number
- GB1536227A GB1536227A GB11609/76A GB1160976A GB1536227A GB 1536227 A GB1536227 A GB 1536227A GB 11609/76 A GB11609/76 A GB 11609/76A GB 1160976 A GB1160976 A GB 1160976A GB 1536227 A GB1536227 A GB 1536227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- reactive sites
- linked
- polymer
- membranes
- 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 6
- 239000002131 composite material Substances 0.000 title 1
- 229920000642 polymer Polymers 0.000 abstract 4
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 3
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229920002873 Polyethylenimine Polymers 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- FDQSRULYDNDXQB-UHFFFAOYSA-N benzene-1,3-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC(C(Cl)=O)=C1 FDQSRULYDNDXQB-UHFFFAOYSA-N 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 125000005442 diisocyanate group Chemical group 0.000 abstract 2
- 150000004820 halides Chemical class 0.000 abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 2
- 150000002924 oxiranes Chemical class 0.000 abstract 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000001299 aldehydes Chemical class 0.000 abstract 1
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- 239000012948 isocyanate Substances 0.000 abstract 1
- 150000002513 isocyanates Chemical class 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229920002492 poly(sulfone) Polymers 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- -1 sulphonyl halide Chemical class 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/60—Polyamines
- B01D71/601—Polyethylenimine
-
- 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
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6212—Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6415—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having nitrogen
- C08G18/6423—Polyalkylene polyamines; polyethylenimines; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
1536227 Polymeric semipermeable membranes UOP Inc 23 March 1976 11609/76 Headings C3R and C3L [Also in Division B1] A method of making semipermeable membranes comprises reacting a film-forming polymer with a monomer which reacts with and cross-links the polymer to form a cross-linked polymeric film having semipermeable properties and grafting on to the polymer at reactive sites a reactant which blocks such reactive sites at which oxidizing attack or fouling might otherwise occur. The grafting reaction may be before, during or after the cross-linking reaction. The polymer may be a polyethyleimine or a polyvinyl alcohol. When a polyethylenimine is used it may be cross-linked with a di- or triacyl halide, sulphonyl halide, bischloroformate or diisocyanate and the reactive sites may be blocked with an ethylenic compound, an epoxide an aldehyde or an anhydride. When a polyvinyl alcohol is used it is cross-linked with a di- or tri-acyl halide, diisocyanate or ethylenic compound which reacts with hydroxyl groups and the reactive sites (remaining hydroxyl groups) are blocked with an acid halide, isocyanate or epoxide. In examples polyethylenimines are reacted with acrylonitrile and with epichlorhydrin to block reactive sites, coated on a porous fabric-reinforced polysulphone substrate and cross-linked with isophthaloyl chloride to form supported membranes; a similarly supported membrane of polyvinyl alcohol also is obtained, cross-linked with isophthaloyl chloride and with reactive sites blocked by reaction with epichlorhydrin; the membranes are tested for salt-rejection using aqueous sodium chloride solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11609/76A GB1536227A (en) | 1976-03-23 | 1976-03-23 | Composite semi-permeable membranes and methods of making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11609/76A GB1536227A (en) | 1976-03-23 | 1976-03-23 | Composite semi-permeable membranes and methods of making same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1536227A true GB1536227A (en) | 1978-12-20 |
Family
ID=9989409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11609/76A Expired GB1536227A (en) | 1976-03-23 | 1976-03-23 | Composite semi-permeable membranes and methods of making same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1536227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0031730A2 (en) * | 1979-12-28 | 1981-07-08 | Teijin Limited | The improved semipermeable composite membranes and process for their production |
| EP1700620A2 (en) * | 2005-03-11 | 2006-09-13 | Stedfast Inc. | Polymeric composition acting as barrier to noxious agents |
-
1976
- 1976-03-23 GB GB11609/76A patent/GB1536227A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0031730A2 (en) * | 1979-12-28 | 1981-07-08 | Teijin Limited | The improved semipermeable composite membranes and process for their production |
| EP0031730A3 (en) * | 1979-12-28 | 1981-12-30 | Teijin Limited | The improved semipermeable composite membranes and process for their production |
| US4388189A (en) | 1979-12-28 | 1983-06-14 | Takeyuki Kawaguchi | Process for preparation of improved semipermeable composite membranes |
| EP1700620A2 (en) * | 2005-03-11 | 2006-09-13 | Stedfast Inc. | Polymeric composition acting as barrier to noxious agents |
| EP1700620A3 (en) * | 2005-03-11 | 2009-04-22 | Stedfast Inc. | Polymeric composition acting as barrier to noxious agents |
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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 |