Claims
- 1. In the fighting of fires for protection of objects from fire by applying thereto water, the improvement which comprises dispersing in the water particles of a cross-linked water-insoluble but highly water-swellable acrylic acid derivative polymer in an amount insufficient to bring the viscosity above 100 mPa's, the particles being present in an amount such that after swelling the swollen particles hold 50 to 80% by weight of the total water.
- 2. The method according to claim 1, wherein the particles are present in from 0.1 to 0.6% by weight of the water.
- 3. The method according to claim 1, wherein the swollen gel particles are from 0.1 to 3 mm in diameter.
- 4. The method according to claim 1, wherein the polymer is a copolymer of an acrylic acid and the water contains sodium, potassium or ammonium ions.
- 5. The method according to claim 1, wherein the particles are present in an amount such that after swelling the swollen particles hold 60 to 70% by weight of the total walter.
- 6. The method according to claim 1, wherein the water further contains silicic acid and/or a silicate.
- 7. The method according to claim 5, wherein the swollen gel particles are from 0.1 to 3 mm in diameter and are present in from 0.1 to 0.6% by weight of the water, the polymer being a copolymer of an acrylic acid, the water containing silicic acid and/or a silicate as well as sodium, potassium or ammonium ions.
- 8. The method according to claim 7, wherein the water contains sodium silicate.
- 9. A fire extinguisher filled with water having dispersed therein particles of a cross-linked water-insoluble but highly water-swellable acrylic acid derivative polymer in an amount insufficient to bring the viscosity above 100 mPa's, the particles being present in an amount such that after swelling the swollen particles hold 50 to 80% by weight of the total water.
- 10. A fire extinguisher according to claim 9, wherein the particles are present in an amount such that after swelling the swollen particles hold 60 to 70% by weight of the total water, the swollen gel particles are from 0.1 to 3 mm in diameter and are present in from 0.1 to 0.6% by weight of the water, the polymer being a copolymer of an acrylic acid, the water containing silicic acid and/or a silicate as well as sodium, potassium or ammonium ions.
- 11. A fire extinguishing blanket-like article containing water having dispersed therein particles of a cross-linked water-insoluble but highly water-swellable acrylic acid derivative polymer in an amount insufficient to bring the viscosity above 100 mPa's, the particles being present in an amount such that after swelling the swollen particles hold 50 to 80% by weight of the total water.
- 12. A blanket according to claim 11, wherein the particles are present in an amount such that after swelling the swollen particles hold 60 to 70% by weight of the total water, the swollen gel particles are from 0.1 to 3 mm in diameter and are present in from 0.1 to 0.6% by weight of the water, the polymer being a copolymer of an acrylic acid, the water containing silicic acid and/or a silicate as well as sodium, potassium or ammonium ions.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3515865 |
May 1985 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 708,082, filed May 24, 1991, now abandoned, which is a continuation of Ser. No. 541,162, filed Jun. 20, 1990, now abandoned, which is a continuation of Ser. No. 855,196, filed Apr. 23, 1986, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
3114630 |
Apr 1982 |
DEX |
2706135 |
Oct 1982 |
DEX |
0012268 |
May 1979 |
JPX |
0133392 |
Oct 1981 |
JPX |
Continuations (3)
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Number |
Date |
Country |
Parent |
708082 |
May 1991 |
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Parent |
541162 |
Jun 1990 |
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Parent |
855196 |
Apr 1986 |
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