Compositions containing saccharide and hydrophobic silica
AssigneeSorox Limited
InventorRoland Twydell
Life of this patent
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Abstract
A particulate composition comprises from 40 to 80% by weight of a water-soluble saccharide, from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g and water. The composition is in the form of fine particles of an aqueous solution of the water-soluble saccharide, the surfaces of which fine particles of aqueous solution are coated with a coating of the finely particulate amorphous hydrophic silica. The composition, which may additionally contain one or more biocidally-active materials, can be applied through conventional dust applicator equipment for the treatment of pests.
Claims28
A particulate composition comprising from 40 to 80% by weight of sucrose, from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g and water which composition is in the form of fine particles of an aqueous solution of the sucrose, the surfaces of which fine particles of aqueous solution are coated with a coating of the finely particulate amorphous hydrophobic silica wherein the composition has biocidal activity.
A process for producing a particulate composition which comprises the steps of mixing from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g, from 40 to 80% by weight of sucrose and water whereby fine discrete particles of an aqueous solution of sucrose become coated on their surfaces by a coating of the amorphous hydrophobic silica.
A particulate composition comprising from 40 to 80% by weight a water-soluble saccharide, from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g and water wherein the source of the water-soluble saccharide and at least part of the water in the composition is an aqueous saccharide syrup, which composition is in the form of fine particles of an aqueous solution of the water-soluble saccharide, the surfaces of which fine particles of aqueous solution are coated with a coating of the finely particulate amorphous hydrophobic silica wherein the composition has biocidal activity.
A process for producing a particulate composition which comprises the steps of mixing from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g, from 40 to 80% by weight of at least one water-soluble saccharide and water whereby fine discrete particles of an aqueous solution of the saccharide become coated on their surfaces by a coating of the amorphous hydrophobic silica particles, wherein the at least one water-soluble saccharide and at least part of the water are added to the finely particulate amorphous hydrophobic silica, prior to mixing, in the form of an aqueous saccharide syrup.
A method for treating pests which comprises applying to a pest a particulate composition comprising from 40 to 80% by weight of a water-soluble saccharide, from 1.5 to 10% by weight of a finely particulate amorphous hydrophobic silica having a surface area in the range of from 80 to 300 m2/g and water which composition is in the form of fine particles of an aqueous solution of the water-soluble saccharide, the surfaces of which fine particles of aqueous solution are coated with a coating of the finely particulate amorphous hydrophobic silica.
Dependencies are inferred from the claim text.