Lever Brothers Company, Division of Conopco, Inc.

Unilever Patent Holdings B.v.

Andrew T Hight

Timothy David Finch

Derek Guy Savill

Peter F Garner-Gray

Geoffrey Newbold

Ian E Niven

Mohamad Sami Falou

Abraham Araya

Donald Peter

Martin J Murphy

Peter J Russell

Peter Graham

Gordon G McLeod

Robert Donaldson

Jeffrey H Connor

Martin M Murphy

Christopher J Adams

Alkali metal aluminosilicate of the zeolite P type having the oxide formula M.sub.2/n O.Al.sub.2 O.sub.3.(1.80-2.66)SiO.sub.2.yH.sub.2 O, y being the water content, proves to have both excellent Calcium Effective Binding Capacity and Calcium Uptake Rate at temperatures below 25.degree. C. The present invention provides for the use of such a zeolite P as a low temperature calcium binder.

Use of aluminosilicates of the zeolite p type as low temperature calcium

A soap powder having a bulk density of at least 600 g/liter contains 35-80 wt % of organic detergent-active material, of which 70-100 wt % is fatty acid soap of low (.ltoreq.20.degree. C.) Krafft temperature, and 20-65 wt % of inorganic and/or builder salts, and may be prepared by granulation and densification in a high-speed mixer/granulator. The high bulk density soap powder shows improved powder properties and better wetting and dispersion behavior in the wash than corresponding undensified powder.

Soap powder compositions

A laundry treatment product, in the form of a sachet containing a particulate bleaching detergent composition containing sodium percarbonate, has at least two compartments to enable the sodium percarbonate to be segregated from certain other ingredients, particularly zeolites. The sachet product exhibits improved bleach stability on storage. Sachets of water-soluble polyvinyl alcohol film are not insolubilized in the wash liquor since no sodium perborate is present to generate insolubilizing borate ions.

Laundry treatment product

A laundry treatment product, in the form of a single-compartment of multicompartment sachet capable of releasing its contents into the wash liquor during the laundry process, contains a particulate laundry treatment composition including a quaternary ammonium- or phosphonium-substituted bleach precursor, for example, cholyl-4-sulphophenyl carbonate, optionally together with a peroxy bleach compound and optionally together with one or more detergent ingredients. The sachet may be a self-contained whole wash product, or a bleach adjunct for use in conjunction with a separate detergent composition.

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Wirral, United Kingdom

Andrew T Hight