Conopco, Inc.

Unilever Plc

Unilever, N.v.

Unilever Plc, a Company Registered in England and Wales Under Company No. 41424

Stephen Thomas Keningley

Stephen Norman Batchelor

Andrew Paul Chapple

John George Chambers

Alyn James Parry

Jennifer Sian Roseblade

Jonathan Osler

John Francis Hubbard

William John Wilson

David Christopher Thorley

David Moorfield

Philip Ronald Moore

Judith Maria Bonsall

Steven James Kynaston

David Victor Avila

The present invention provides a coated lenticular or disc detergent particle having perpendicular dimensions x, y and z, the particle comprises: (i) from 40 to 90 wt % surfactant selected from: anionic surfactant; and, non-ionic surfactant; (ii) from 1 to 40 wt % water soluble inorganic salts; (iii) from 0.0001 to 0.1 wt % dye, wherein the dye is selected: from anionic dyes; and, non-ionic dyes; and, (iv) from 0 to 3 wt % of perfume, wherein the inorganic salts and the dye are present on the detergent particle as a coating and the surfactant is present as a core.

Laundry detergent particles

The present invention provides a coated lenticular or disc detergent particle having perpendicular dimensions x, y and z, wherein x is from 1 to 2 mm, y is from 2 to 8 mm and z is from 2 to 8 mm, wherein the particle comprises: (i) from 40 to 90 wt % surfactant selected from anionic surfactant and non-ionic surfactant; (ii) from 1 to 40 wt % water soluble inorganic salts; and (iii) from 0.0001 to 0.1 wt % dye, wherein the dye is covalently bound to from 1 to 4 sulphonate groups, wherein the inorganic salts and the dye are present on the detergent particle as a coating and the surfactant is present as a core.

The present invention provides a coated lenticular or disc detergent particle having maximum perpendicular dimensions x, y and z, wherein x is from 1 to 2 mm, y is from 2 to 8 mm, and z is from 2 to 8 mm, wherein the particle comprises: (i) from 40 to 90 wt % surfactant selected from: anionic surfactant; and, non-ionic surfactant; (ii) from 1 to 40 wt % water soluble inorganic salts; and, (iii) from 0.0001 to 0.1 wt % dye, wherein the dye is selected from: anionic dyes; and non-ionic dyes, wherein the inorganic salts are present on the detergent particle as a coating and the surfactant and the dye are present as a core.

The present invention provides a coated lenticular or disc detergent particle having perpendicular dimensions x, y and z, wherein x is from 1 to 2 mm, y is from 2 to 8 mm and z is from 2 to 8 mm, wherein the particle comprises: (i) from 40 to 90 wt % surfactant selected from anionic surfactant and non-ionic surfactant; (ii) from 1 to 40 wt % water soluble inorganic salts; and (iii) from 0.0001 to 0.1 wt % pigment, wherein the pigment is selected from organic and inorganic pigments, wherein the inorganic salts are present on the detergent particle as a coating and the surfactant and the pigment are present as a core.

Laundry detergent particle

The present invention provides lenticular or disc detergent particles comprising (i) surfactant, (ii) inorganic salts, (iii) pigment, wherein the inorganic salts and the pigment are present on the detergent particle as a coating and the surfactant is present as a core. The particles show reduced staining.

The present invention provides a lenticular or disc coated detergent particle having perpendicular dimensions x, y and z, wherein x is from 1 to 2 mm, y is from 2 to 8 mm and z is from 2 to 8 mm, wherein the particle comprises: (i) from 40 to 90 wt % surfactant selected from anionic surfactant and non-ionic surfactant; (ii) from 1 to 40 wt % water soluble inorganic salts; and (iii) from 0.0001 to 0.5 wt % pigment, wherein the pigment is selected from organic and inorganic pigments, wherein the inorganic salts and the pigment are present on the detergent particle as a coating and the surfactant is present as a core.

A process for manufacturing detergent particles comprising the steps of: a) forming a liquid surfactant blend comprising a major amount of surfactant and a minor amount of water, the surfactant part consisting of at least 51 wt % linear alkylbenzene sulfonate and at least one co-surfactant, the surfactant blend consisting of at most 20 wt % nonionic surfactant; b) drying the liquid surfactant blend of step (a) in an evaporator or drier to a moisture content of at most 2 wt % and cooling the output from the evaporator or dryer; c) feeding the cooled material, which output comprises at least 93 wt % surfactant blend with a major part of LAS, to an extruder, optionally along with less than 10 wt % of other materials such as perfume, fluorescer, and extruding the surfactant blend to form an extrudate while periodically cutting the extrudate to form hard detergent particles with a diameter across the extruder of greater than 2 mm and a thickness along the axis of the extruder of greater than 0.2 mm, provided that the diameter is greater than the thickness; d) optionally, coating the extruded hard detergent particles with up to 30 wt % coating material selected from powdered inorganic material and mixtures of such material and nonionic material with a melting point in the range 40 to 90&#xb0; C.

Manufacture of high active detergent particles

The present invention provides lenticular or disc detergent particles comprising surfactant, inorganic salts and pigment, wherein the inorganic salts are present on the detergent particles as a coating and the surfactant and the pigment are present as a core. The particles show reduced staining.

A particulate detergent composition comprising sulphonated fluorescer, wherein the composition comprises greater than 40 wt % detergent surfactant, at least 70% by number of the particles comprising a core, comprising mainly surfactant, and around the core a coating, comprising water soluble inorganic salt and sulphonated fluorescer, each particle having perpendicular dimensions x, y and z, wherein x is from 0.2 to 2 mm, y is from 2.5 to 8 mm, and z is from 2.5 to 8 mm.

Particulate detergent compositions comprising fluorescer

A packaged particulate detergent composition, wherein the composition comprises greater than 40 wt % detergent surfactant, at least 70% by number of the particles comprising a core, comprising mainly surfactant, and around the core, a water soluble coating in an amount of from 10 to 45 wt % based on the coated particle, each coated particle having perpendicular dimensions x, y and z, wherein x is from 0.2 to 2 mm, y is from 2.5 to 8 mm, and z is from 2.5 to 8 mm, the packaged particles being substantially the same shape and size as one another.

Growing community of inventors

Wirral, United Kingdom

Stephen Thomas Keningley