Unilever Patent Holdings B.v.

Lever Brothers Company

Lever Brothers Company, Division of Conopco, Inc.

Internationale Octrooi Maatschappij 'Octropa' Bv

Ian C Griffiths

Michael J Garvey

John H Rennie

Ian Thompson

A non-aqueous liquid cleaning composition comprises solid particles, such as builders, bleaches or abrasives, dispersed in a liquid phase, ideally an alkoxylated liquid surfactant, and, as a dispersion modifier, naphthalene sulphonic acid, a formaldehyde condensate thereof or ideally a mixture of the two.

Liquid non-aqueous cleaning products comprising a dispersion modifier

Porous spheroidal silica having a particle size in the range 1 to 400 microns, axial ratios of 1:1 to 1:12 has up to 50% by weight of the SiO.sub.2 of included material, such as for example perfumes, flavoring materials, pigments, germicides, bactericides, fungicides, bleaching agents, skin benefit agents, therapeutic agents, dispersed in the silica as particles or droplets in the size range 0.01 to 10 .mu.m. The spheroids can be made by mixing together an aqueous, stabilized silica sol containing dispersed therein up to 50% by weight of the silica of an included material and an aqueous solution of a non-adsorbing polymer to form a phase separated system comprising silica droplets containing included material in a polymer-rich continuous phase and condensing the silica sol to aggregate the droplets to form silica spheroids containing the dispersed included material. The included material can be released in use by e.g. wetting, attrition, dissolution, pH change, heating.

Spheroidal silica

A lubricant comprising an oil-in-water emulsion and solid particles, in which the oil is a lubricating material and the oil droplets are stabilized by a surface coating of partially hydrophobic silica particles of a size less then 1 micrometer. This lubricant is to be used as a hydraulic fluid and as a metal-working or metal-rolling fluid.

Lubricant comprising an oil-in-water emulsion, a process for the

This invention discloses novel, porous silica structures prepared from silica platelets. The structures are preferably prepared by spray-drying.

Porous structures

This invention relates to a process for the separation of a polysaccharide from an aqueous system using a water-soluble fatty acid salt and optionally a precipitated liquid to separate out the polysaccharide.

Phase separation of polysaccharides from aqueous solutions

This invention relates to novel silica spheroids and to their production by a phase separation technique in which an aqueous alkaline stabilized silica sol and an aqueous solution of a non-adsorbing polymer are mixed and acidified to produce the new silica spheroids.

This invention discloses the preparation of coatings on substrates. The coating is derived from a film formed at a sol air interface and the film is bonded to the substrate by direct contact. The coating preferably contains silica.

Process for forming a coating

Suspensions of sodium aluminosilicate are stabilized by using 0.5-10% of a nonionic detergent active compound and 0.2-15% of a compatible water soluble salt. The stabilized suspensions can be used in the preparation of particulate detergent compositions by adding one or more other detergent ingredients and then drying the mixture.

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Merseyside, United Kingdom

Ian C Griffiths