GB1450105A - Polyurethane hydrogel and method for the production of the same - Google Patents
Polyurethane hydrogel and method for the production of the sameInfo
- Publication number
- GB1450105A GB1450105A GB5478373A GB5478373A GB1450105A GB 1450105 A GB1450105 A GB 1450105A GB 5478373 A GB5478373 A GB 5478373A GB 5478373 A GB5478373 A GB 5478373A GB 1450105 A GB1450105 A GB 1450105A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prepolymer
- added
- polyalcohol
- nov
- terminal hydroxyl
- 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
- 239000000017 hydrogel Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 229920002635 polyurethane Polymers 0.000 title abstract 2
- 239000004814 polyurethane Substances 0.000 title abstract 2
- 239000010802 sludge Substances 0.000 abstract 3
- 239000004721 Polyphenylene oxide Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 2
- 229920000570 polyether Polymers 0.000 abstract 2
- 239000010865 sewage Substances 0.000 abstract 2
- 150000005846 sugar alcohols Polymers 0.000 abstract 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 abstract 1
- 125000002947 alkylene group Chemical group 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- -1 chloride cation Chemical class 0.000 abstract 1
- 239000000499 gel Substances 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 abstract 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 1
- 229920001228 polyisocyanate Polymers 0.000 abstract 1
- 239000005056 polyisocyanate 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
- 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
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
-
- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
- C08G2210/00—Compositions for preparing hydrogels
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Treatment Of Sludge (AREA)
- Sealing Material Composition (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
1450105 Dewatering sludges DAI-ICHI KOGYO SEIYAKU CO Ltd 26 Nov 1973 [24 Nov 1972] 54783/73 Heading C1C [Also in Division C3] Aqueous dispersions such as sewage and industrial waste water containing sludge may be gelated by forming therein a polyurethane hydrogel prepared as a result of the reaction of the water with a polyurethane prepolymer containing free isocyanate groups and which is the reaction product of a polyisocyanate with a polyether derived from a plurality of alkylene oxides, 50 to 90% by weight of which is ethylene oxide added at random to a polyalcohol having at least two terminal hydroxyl groups in an amount to provide an average molecular weight for the polyether of 1000 to 4000 per terminal hydroxyl group of the polyalcohol (see Division C3). The gel formed is more concentrated than the original dispersion and dries readily, e.g. in air. In Example 4 a prepolymer is added to a pulp sludge released from paper mills and in Example 5 sewage treated by the activated sludge process has added thereto formaldehyde, followed by polyvinylpyridinium chloride cation solidifier and finally the prepolymer to form a hydrogel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47118321A JPS4976994A (en) | 1972-11-24 | 1972-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1450105A true GB1450105A (en) | 1976-09-22 |
Family
ID=14733763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5478373A Expired GB1450105A (en) | 1972-11-24 | 1973-11-26 | Polyurethane hydrogel and method for the production of the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS4976994A (en) |
| GB (1) | GB1450105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0333899A2 (en) * | 1988-03-23 | 1989-09-27 | Hampshire Chemical Corporation | Biocompatible polyurea-urethane hydrated polymers |
| EP0339369A1 (en) * | 1988-04-26 | 1989-11-02 | The Dow Chemical Company | Polyurethane foam prepared using high functionality cell openers and process for preparing the same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538862A (en) * | 1978-09-13 | 1980-03-18 | Dai Ichi Kogyo Seiyaku Co Ltd | Ground stabilization with complex grout |
| JPS62101679A (en) * | 1985-10-30 | 1987-05-12 | Asahi Denka Kogyo Kk | How to seal flammable fluids |
| JPS63117088A (en) * | 1986-11-04 | 1988-05-21 | Tokai Rubber Ind Ltd | Sealant for water cutoff |
| JP2853127B2 (en) * | 1988-04-20 | 1999-02-03 | ダブリユー・アール・グレイス・アンド・カンパニー−コネチカツト | Biocompatible hydrated polymer |
| EP2298825A1 (en) * | 2009-09-17 | 2011-03-23 | Bayer MaterialScience AG | Hydrophilic polyurethane ureae dispersions |
| JP5879146B2 (en) * | 2012-02-16 | 2016-03-08 | 積水化成品工業株式会社 | Electrode pad |
-
1972
- 1972-11-24 JP JP47118321A patent/JPS4976994A/ja active Pending
-
1973
- 1973-11-26 GB GB5478373A patent/GB1450105A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0333899A2 (en) * | 1988-03-23 | 1989-09-27 | Hampshire Chemical Corporation | Biocompatible polyurea-urethane hydrated polymers |
| EP0333899A3 (en) * | 1988-03-23 | 1992-01-15 | Hampshire Chemical Corporation | Biocompatible polyurea-urethane hydrated polymers |
| EP0339369A1 (en) * | 1988-04-26 | 1989-11-02 | The Dow Chemical Company | Polyurethane foam prepared using high functionality cell openers and process for preparing the same |
| AU619277B2 (en) * | 1988-04-26 | 1992-01-23 | Dow Chemical Company, The | Polyurethane foam prepared using high functionality cell openers and process for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6289573A (en) | 1975-05-29 |
| JPS4976994A (en) | 1974-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19931125 |