Gel forming compositions
AssigneeFosroc International Limited
InventorsJames Beale, Robert F. Viles
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Abstract
A substantially dry powder composition which when mixed with water forms a gel comprises a swelling clay, a sodium silicate having a silica to soda weight ratio of about 2.65:1 or below and an inorganic gelling agent for the sodium silicate which gelling agent does not introduce ions which significantly lower the gelling capacity of the clay. The composition is particularly suitable for use in coal mines as an anti-combustion material.
Claims8
A substantially dry powder composition which when mixed with water forms a gel which remains deformable and resilient and is not converted to a solid mass consisting essentially of 50-90% by weight of a swelling clay, 2-50% by weight of a sodium silicate having a silica to soda weight ratio of about 2.65:1 or below and 0.1-20% by weight of an inorganic gelling agent for the sodium silicate selected from the group consisting of silicofluorides, calcium silicates and calcium sulphate.
Dependencies are inferred from the claim text.