Use of an aqueous swollen macromolecule-containing system as wat

Details Use of an aqueous swollen macromolecule-containing system as wat Use of an aqueous swollen macromolecule-containing system as wat

1991-11-18

1993-03-02

Lovering, Richard D.

Fire extinguishers

Processes

Of extinguishing fire

169 47, 169 5, 169 9, 252 2, 252 805, 252601, 252603, 252610, 428920, 428921, A62C 200, A62D 100, B27N 900

Patent

active

051901102

ABSTRACT:
In the fighting of fires or 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 hightly water-swellable acrylic acid derivative polymer in an amount insufficient to bring the viscosity above 100 mPa's. Advantageously, 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 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. The water is freely pumpable but the swollen particles adhere to surfaces they contact rather than running off rapidly.

REFERENCES:
patent: 3080316 (1963-03-01), Petertyl et al.
patent: 4016894 (1977-04-01), Baldwin et al.
patent: 4017653 (1977-04-01), Gross
patent: 4018951 (1977-04-01), Gross
patent: 4145296 (1979-03-01), Fox et al.
patent: 4179367 (1979-12-01), Barthell et al.
patent: 4338239 (1982-07-01), Dammann
patent: 4351754 (1982-09-01), Dupre 524558

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