GB2234252A - A process for the preparation of a sodium polyacrylate gel - Google Patents
A process for the preparation of a sodium polyacrylate gel Download PDFInfo
- Publication number
- GB2234252A GB2234252A GB9012191A GB9012191A GB2234252A GB 2234252 A GB2234252 A GB 2234252A GB 9012191 A GB9012191 A GB 9012191A GB 9012191 A GB9012191 A GB 9012191A GB 2234252 A GB2234252 A GB 2234252A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- sodium polyacrylate
- gel
- fire
- preparation
- 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.)
- Granted
Links
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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0064—Gels; Film-forming compositions
-
- 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
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Emergency Management (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Fire-Extinguishing Compositions (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
A process for the preparation of a sodium polyacrylate gel comprises treating sodium polyacrylate with water in a proportion of 1 to 10 g/1 of water, for a time between 1 and 300 seconds and at a temperature between 10 and 40 DEG C to obtain the gel. The main uses of the gel is to extinguish fires and to be a means for furnishing moisture in agricultural use.
Description
1 A process for the preparation of a s.odium polyacrylate gel
The present invention fits in the technical field of the preparation of sodium polyacrylate gels especially applicable to extinguish fires and as a means for furnishing moisture in agricultural use.
The sodium polyacrylate used as the.,bgse of the gel of the present invention is a known product which suitably has, for example, the following physical prc;per-lies.
Appearance: White powder Size: Moisture content: Smell:
PH: Solubility:
Degradation:
Stability: Absorption capacity:
Specific weight: Harmful effects:
Microgranular spray 7 % of its weight non-perceptible 7+3 (sol. 1 111.1 in water) Soluble in water. Insoluble in organic solvents Under prolonged exposure to sunlight Stable, in the absence of moisture Close to 800 units by weight, in distilled water (depending on the manufacturer) Approx. 0.5 kg/1. Unknown. Harmless to touch or swallowing The process of the present invention is characterized because it comprises treating sodium polyacrylate with water in a proportion of 1 to 10 g/1. of water until small saturated nuclei of water are fomed stably with a soapy gelatine appearance, which takes between 1 and 300 seconds. The process is carried out at a temperature between approximately 10 and 409 C.
r- i 2 Preferably some 3 g/1. of sodium polyacrylate are used, although the proportion depends on the quality of the water as a higher concentration is required with chlorinated water. The normal temperature at which the process is carried out is approximately 189 C.
REMARKS AND EXPERIMENTS 1 C' 1) It has been observed that, hydrating the product in suitable proportion of water, so that it can be pushred by hydraulic pump, similar to the ones used to remove water, the gelatine that is sprayed through the nozzle remains llimpregnant'l and avoids the loss of water by evaporation.
If a source of heat approaches this gelatine, the water remains, it does not evaporate.
- 2) Placing the product on a hotplate, to direct heat, it takes more than 25 minutes to return to its initi al powdered state.
3) The following experiment was conducted:
Combustible material of different components was made to burn: rubber, wood, textile fibers, brush and dry grass... and an attempt to put out this source of heat was made in the normal wav with water. The result is that evaporation, scattering, splashing are produced and it is really costly to put out the fire. Likewise, an attempt was made to put out the fire with the hydrated product of the invention by spraying it on these sources of combustion with a promising result: 1/4 the volume of water, less time, less manpower were used and the result is immediate, since the gel falls on the source of combustion "smothering" it and cutting off the oxygen supply and, therefore, combustion is immediately curbed. There is no scattering or evaporation since it is observed that the product has a boiling point much higher than 1002 C.
4) A similar experiment was carried out in an open mountain (controlled area):
A fire belt impregnating an advance strip with water was made at an advance fire front in order to stop it. Upon reach- r 1 3 ing the fire and burning the brush close to this point, the water evaporated and the fire advanced without presentina another alternative.
on the other hand, the fire belt was marked with the gel of the invention and the fire irremissibly stopped advancing, remaining extinguished in this point. The plants and brush had the gelatine covering them and preventing the evaporation of the water and therefore preventing combustion of their materials.
The product of the invention can be used by introducing it in a closed container with compressed air or gases, such as carbon dioxide in order to be applied by extinguishers and the like.
Another process of application, just like the synthetic foams used by fire companies, is to use a mixing Iump which is connected by nozzles to the main hose through which water is drawn in from a fire hvdrant.
OTHER DIRECT OR INDIRECT USES The constructiorsof new public buildings and large department stores have irrigation systems to extinguish sources of heat. These auxiliarv elements operate by spraying and spreading out water. They do not always operate effectively and the inventors suggest that, if these same elements were to dose with gelatine the place where the fire has started, the effectiveness of these apparatus would considerably increase.
On the other hand, the insulating materials and coating fibers, including the product in the composition thereof in the manufacturing process, upon coming in contact with water, would form a fire-resistant moisture chamber on carpets, glass fibers, corks, wood, etc.
r 4 1 1
Claims (2)
1. A process for the preparation of a sodium polyacrylate gel, characterized because it comprises treating sodium polyacrylate with water in a proportion of 1 to 10 g/l of water for a time between 1 and 300 seconds and at a temperature between 10 and 40C, to obtain the gel.
2. The use of a sodium polyacrylate gel, prepared as described in claim 1, as a fire-extinguishing or fire-retardant agent.
Published 1991 atThe Patent Office. State House. 66/71 High Holbom. London WClR47P. Further copies Tnay be obtained from Sales Branch. Unit 6, Nine Mile Point. Cwinfelinfach, Cross Keys. Newport. NPI 7HZ- Printed by Multiplex techniques ltd. St Mary Cray. Kent
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES8901936A ES2018370A6 (en) | 1989-06-02 | 1989-06-02 | A process for the preparation of a sodium polyacrylate gel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9012191D0 GB9012191D0 (en) | 1990-07-18 |
| GB2234252A true GB2234252A (en) | 1991-01-30 |
| GB2234252B GB2234252B (en) | 1993-03-17 |
Family
ID=8262326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9012191A Expired - Fee Related GB2234252B (en) | 1989-06-02 | 1990-06-01 | A process for the preparation of a sodium polyacrylate gel |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPH0341124A (en) |
| AU (1) | AU5623190A (en) |
| BR (1) | BR9002684A (en) |
| CA (1) | CA2018075A1 (en) |
| DE (1) | DE4017644C2 (en) |
| DK (1) | DK137390A (en) |
| ES (1) | ES2018370A6 (en) |
| FI (1) | FI902731A0 (en) |
| FR (1) | FR2647799A1 (en) |
| GB (1) | GB2234252B (en) |
| GR (1) | GR900100420A (en) |
| HU (1) | HUT55811A (en) |
| IL (1) | IL94576A0 (en) |
| IT (1) | IT1240470B (en) |
| NO (1) | NO902460L (en) |
| PL (1) | PL285435A1 (en) |
| PT (1) | PT94234A (en) |
| SE (1) | SE9001963L (en) |
| YU (1) | YU106590A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61289812A (en) * | 1985-06-18 | 1986-12-19 | 株式会社クボタ | Fruit harvester |
| KR20020024156A (en) * | 2002-01-25 | 2002-03-29 | 서호천 | Jelly Extinguishing Agent |
| US8555991B2 (en) | 2006-03-02 | 2013-10-15 | GelTech Solutions, Inc. | Process and device for fire prevention and extinguishing |
| JP6191292B2 (en) | 2013-07-10 | 2017-09-06 | Smc株式会社 | Machine tool chuck device and machine tool chuck method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130670A (en) * | 1983-12-16 | 1985-07-12 | Mitsui Toatsu Chem Inc | Method for inhibiting leakage of water in building |
| FR2615399A1 (en) * | 1987-05-22 | 1988-11-25 | Lafarge Nouveaux Materiaux | Method for fighting fires and product for implementing the method |
| FR2628976A1 (en) * | 1988-03-25 | 1989-09-29 | Weber Sa A | Treating water used for combating fire - by adding crosslinked polyacrylate or polyacrylamide to form gel |
| EP0169674B1 (en) * | 1984-06-28 | 1990-05-09 | Ciba Specialty Chemicals Water Treatments Limited | Polymer powders |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58204082A (en) * | 1982-05-21 | 1983-11-28 | Satsuki Kitani | Cold heat-storage material |
| JPH0615574B2 (en) * | 1987-08-26 | 1994-03-02 | 積水化成品工業株式会社 | Method for producing water absorbent resin |
-
1989
- 1989-06-02 ES ES8901936A patent/ES2018370A6/en not_active Expired - Fee Related
-
1990
- 1990-05-31 GR GR900100420A patent/GR900100420A/en unknown
- 1990-05-31 SE SE9001963A patent/SE9001963L/en not_active Application Discontinuation
- 1990-05-31 YU YU01065/90A patent/YU106590A/en unknown
- 1990-05-31 IL IL94576A patent/IL94576A0/en unknown
- 1990-05-31 DE DE4017644A patent/DE4017644C2/en not_active Expired - Fee Related
- 1990-06-01 GB GB9012191A patent/GB2234252B/en not_active Expired - Fee Related
- 1990-06-01 PL PL28543590A patent/PL285435A1/en unknown
- 1990-06-01 AU AU56231/90A patent/AU5623190A/en not_active Abandoned
- 1990-06-01 JP JP2145235A patent/JPH0341124A/en active Pending
- 1990-06-01 BR BR909002684A patent/BR9002684A/en unknown
- 1990-06-01 CA CA002018075A patent/CA2018075A1/en not_active Abandoned
- 1990-06-01 DK DK137390A patent/DK137390A/en not_active Application Discontinuation
- 1990-06-01 PT PT94234A patent/PT94234A/en not_active Application Discontinuation
- 1990-06-01 IT IT67399A patent/IT1240470B/en active IP Right Grant
- 1990-06-01 FI FI902731A patent/FI902731A0/en not_active Application Discontinuation
- 1990-06-01 HU HU903298A patent/HUT55811A/en unknown
- 1990-06-01 FR FR9006888A patent/FR2647799A1/en not_active Withdrawn
- 1990-06-01 NO NO90902460A patent/NO902460L/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130670A (en) * | 1983-12-16 | 1985-07-12 | Mitsui Toatsu Chem Inc | Method for inhibiting leakage of water in building |
| EP0169674B1 (en) * | 1984-06-28 | 1990-05-09 | Ciba Specialty Chemicals Water Treatments Limited | Polymer powders |
| FR2615399A1 (en) * | 1987-05-22 | 1988-11-25 | Lafarge Nouveaux Materiaux | Method for fighting fires and product for implementing the method |
| FR2628976A1 (en) * | 1988-03-25 | 1989-09-29 | Weber Sa A | Treating water used for combating fire - by adding crosslinked polyacrylate or polyacrylamide to form gel |
Also Published As
| Publication number | Publication date |
|---|---|
| IL94576A0 (en) | 1991-03-10 |
| PL285435A1 (en) | 1991-02-11 |
| IT1240470B (en) | 1993-12-17 |
| PT94234A (en) | 1991-02-08 |
| CA2018075A1 (en) | 1990-12-02 |
| IT9067399A1 (en) | 1991-12-01 |
| FI902731A0 (en) | 1990-06-01 |
| SE9001963D0 (en) | 1990-05-31 |
| DK137390D0 (en) | 1990-06-01 |
| YU106590A (en) | 1991-10-31 |
| FR2647799A1 (en) | 1990-12-07 |
| DK137390A (en) | 1990-12-03 |
| NO902460L (en) | 1990-12-03 |
| GB9012191D0 (en) | 1990-07-18 |
| HUT55811A (en) | 1991-06-28 |
| DE4017644C2 (en) | 1993-11-04 |
| JPH0341124A (en) | 1991-02-21 |
| GR900100420A (en) | 1991-11-15 |
| GB2234252B (en) | 1993-03-17 |
| HU903298D0 (en) | 1990-10-28 |
| SE9001963L (en) | 1990-12-03 |
| NO902460D0 (en) | 1990-06-01 |
| AU5623190A (en) | 1990-12-06 |
| ES2018370A6 (en) | 1991-04-01 |
| DE4017644A1 (en) | 1990-12-06 |
| IT9067399A0 (en) | 1990-06-01 |
| BR9002684A (en) | 1991-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940601 |