GB1378931A - Alginate sponge and process therefor - Google Patents
Alginate sponge and process thereforInfo
- Publication number
- GB1378931A GB1378931A GB8572A GB8572A GB1378931A GB 1378931 A GB1378931 A GB 1378931A GB 8572 A GB8572 A GB 8572A GB 8572 A GB8572 A GB 8572A GB 1378931 A GB1378931 A GB 1378931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alginate
- sponge
- water
- dried
- constituents
- 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
- 235000010443 alginic acid Nutrition 0.000 title abstract 8
- 229920000615 alginic acid Polymers 0.000 title abstract 8
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 title abstract 6
- 229940072056 alginate Drugs 0.000 title abstract 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 2
- -1 sodium alginate Chemical compound 0.000 abstract 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 abstract 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000000783 alginic acid Substances 0.000 abstract 1
- 229960001126 alginic acid Drugs 0.000 abstract 1
- 150000004781 alginic acids Chemical class 0.000 abstract 1
- 239000000648 calcium alginate Substances 0.000 abstract 1
- 235000010410 calcium alginate Nutrition 0.000 abstract 1
- 229960002681 calcium alginate Drugs 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000000661 sodium alginate Substances 0.000 abstract 1
- 235000010413 sodium alginate Nutrition 0.000 abstract 1
- 229940005550 sodium alginate Drugs 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
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/425—Porous materials, e.g. foams or sponges
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/048—Elimination of a frozen liquid phase
- C08J2201/0484—Elimination of a frozen liquid phase the liquid phase being aqueous
-
- 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
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/04—Alginic acid; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1378931 Alginate sponges FREEZE DRY PRODUCTS Inc 3 Jan 1972 85/72 Headings C3C and C3U A sponge that is open-celled, porous, waterabsorbent and water-disintegrative comprises the constituents of at least one water-soluble alginate, e.g. sodium alginate, and at least one water-insoluble alginate, e.g. calcium alginate, (i.e. the alginate contains cations of types which would impart water-solubility and insolubility respectively to the alginate). The sponge may be made by freezing an aqueous dispersion of the constituents of the above two alginates and then sublimating the ice to form the sponge. The sponge may be rehydrated to a moisture content of 10-90% by wt. and then compressed to collapse a portion of the cells, and then dried. In Example I a gel was prepared by slurrying aqueous alginic acid with isopropyl alcohol, neutralizing a part of the acid with calcium carbonate and the remainder with sodium bicarbonate, the resultant product was dried, milled and dispersed in water to form a gel which was then frozen and dried to form a sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8572A GB1378931A (en) | 1972-01-03 | 1972-01-03 | Alginate sponge and process therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8572A GB1378931A (en) | 1972-01-03 | 1972-01-03 | Alginate sponge and process therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1378931A true GB1378931A (en) | 1974-12-27 |
Family
ID=9698154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8572A Expired GB1378931A (en) | 1972-01-03 | 1972-01-03 | Alginate sponge and process therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1378931A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994005341A1 (en) * | 1992-09-10 | 1994-03-17 | Mcneil-Ppc, Inc. | Lyophilized foam wound dressing |
| US5914125A (en) * | 1991-02-07 | 1999-06-22 | Ultra Laboratories Limited | Wound dressing |
| WO2004082594A3 (en) * | 2003-03-18 | 2004-12-16 | Sk Chemicals Co Ltd | Alginate sponge and preparation method thereof |
-
1972
- 1972-01-03 GB GB8572A patent/GB1378931A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5914125A (en) * | 1991-02-07 | 1999-06-22 | Ultra Laboratories Limited | Wound dressing |
| WO1994005341A1 (en) * | 1992-09-10 | 1994-03-17 | Mcneil-Ppc, Inc. | Lyophilized foam wound dressing |
| WO2004082594A3 (en) * | 2003-03-18 | 2004-12-16 | Sk Chemicals Co Ltd | Alginate sponge and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |