Lever Brothers Company, Division of Conopco, Inc.

Unilever Patent Holdings B.v.

Lever Brothers Company

Andrew P Chapple

Marten R Van Vliet

Peter Graham

Roger Brace

Jelles Vincent Boskamp

William Derek Emery

Peter Willem Appel

Peter C Knight

Edwin Leo Lempers

Theo J Osinga

Cornelis B Donker

Christophe Michel Joyeux

Carolyn Angela Lanceley

Jayne Elisabeth Nation

Willaim D Emery

Fredericus Cornelis Dobbe

Theodorus Johannes Arts

Hermien W Plomp

Clemens O Monir

In order to enhance the stability of sodium percarbonate bleach in particulate detergent compositions, crystalline aluminosilicate and a water-soluble alkali metal silicate in an amount of from 1-20% by weight based on the aluminosilicate are included in the non-spray dried base powder. In order to obtain the stabilizing effect, the crystalline aluminosilicate comprises zeolite MAP or the alkali metal silicate is homogeneously dispersed with respect to the aluminosilicate.

Particulate aluminosilicate-built detergent compositions comprising

A bleach catalyst composition in the form of non-friable composite granules comprising:

Bleach catalyst composition

A free-flowing particulate detergent composition or component therefor comprises

Particulate detergent composition or component comprising zeolite MAP

A bleaching particulate detergent composition comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate, maximum aluminum zeolite P (zeolite MAP), and a bleach system comprising an organic peroxyacid. Use of zeolite MAP in place of conventional zeolite 4A improves significantly the storage stability of the organic peroxyacid, especially in compositions of high bulk density (700 g/l and above).

Detergent composition containing zeolite map and organic peroxyacid

A bleaching particulate detergent composition of high bulk density (at least 700 g/l) comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate--maximum aluminium zeolite P (zeolite MAP--and a bleach system comprising a peroxy bleach compound and a bleach precursor. Use of zeolite MAP in place of conventional zeolite 4A in this high bulk density composition improves significantly the storage stability of the bleach precursor.

Detergent compositions

A bleaching particulate detergent composition of high bulk density (at least 700 g/l) comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate--maximum aluminium zeolite P (zeolite MAP)--and a bleach system comprising sodium perborate monohydrate. Use of zeolite MAP in place of conventional zeolite 4A in this high bulk density composition improves significantly the storage stability of the sodium perborate monohydrate.

A stable coated percarbonate bleach product is described wherein sodium percarbonate particles are coated with at least 1% by weight of an alkalimetal citrate wherein the product is formed by spraying a solution of the alkalimetal citrate onto the sodium percarbonate particles.

Sodium percarbonate stabilized with a coating of an alkalimetal citrate

A bleaching particulate detergent composition comprises one or more detergent-active compounds, one or more detergency builders including a specific alkali metal aluminosilicate, maximum aluminum zeolite P (zeolite MAP), and a bleach system comprising sodium percarbonate. Zeolite MAP has a beneficial effect on sodium percarbonate stability.

The invention relates to fabric softening clays, detergent compositions comprising clays and processes for producing the clays. The fabric softening clays are dioctahedral 2:1 layer phyllosilicates comprising at least 100 micrograms of lithium per gram of clay mineral. Problems of poor clay color may be overcome.

Detergent composition containing modified dioctanedral fabric softening

Process for preparing a fabric softening lithium exchanged clay

The invention provides a catalyst composition useful in treating hydrocarbons contaminated with vanadium residues, the catalyst comprising a zeolite, a matrix and certain heavier alkaline earth metal oxides.

Catalyst

A silica-magnesia cogelled material is usable as a base for petroleum cracking catalysts based on zeolites. Invention described provides cogel base in which the silica and magnesia components are intimately mixed. This feature is achieved by controlling the pH during the mixing procedure.

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Wrexham, United Kingdom

Andrew P Chapple