Storage-stable aerated gel composition and a process for producing it
AssigneeSorex Limited
InventorsRoland Twydell, Lesley Le Quesne
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AssigneeSorex Limited
InventorsRoland Twydell, Lesley Le Quesne
Estimating the term…
A storage-stable aerated gel composition comprising 30 to 97% by weight of water, 0.2 to 5% by weight of a gelling agent selected from xanthan gum, sodium alginate and neutralized carboxyvinyl polymer and 2 to 5% by weight of a fine particulate hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g. The composition is in the form of fine particles of an aqueous gel containing the water and the gelling agent, the surface of which particles are coated with a coating of the finely divided particulate hydrophobic silica. The gel composition is prepared by mixing, under high shear conditions, the water and the fine particulate silica, and then adding to the resulting mixture, the gelling agent and mixing under high shear conditions.
A storage-stable aerated gel composition comprising 30 to 97% by weight of water, 0.2 to 5% by weight of a gelling agent selected from the group consisting of xanthan gum, sodium alginate and neutralised carboxyvinyl polymer and 2 to 5% by weight of a fine particulate, hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g which said composition is in the form of fine particles of an aqueous gel containing the water and gelling agent, the surfaces of which fine particles are coated with a coating of the finely particulate hydrophobic silica.
A process for producing the storage-stable aerated gel composition which comprises the steps of mixing, under high shear conditions, from 2 to 5% by weight of a fine particulate, hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g and from 30 to 97% by weight of water, adding to the resulting mixture from 0.2 to 5% by weight of a gelling agent selected from the group consisting of xanthan gum, sodium alginate and neutralised carboxyvinyl polymer and mixing the gelling agent with the silica-water mixture under conditions of high shear.
Dependencies are inferred from the claim text.