Lever Brothers Company, Division of Conopco, Inc.

Lever Brothers Company

Marten R Van Vliet

Ton Swarthoff

Rudolf J Martens

Ronald Hage

Jean Hypolites Koek

Andrew P Chapple

Karin Van Der Helm-Rademaker

Thomas L Favre

Jelles Vincent Boskamp

Francois Delwel

William Derek Emery

Mark E Rerek

Cornelis B Donker

Cornelis G Van Kralingen

Jayne Elisabeth Nation

Jan E Iburg

Paul A Chapple

Hermien W Plomp

Clemens O Monir

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

Bleach catalyst composition

A particulate bleaching detergent composition, preferably having a bulk density of at least 700 g/l, comprises an organic surfactant system, a zeolite builder and a bleach system. The bleach system includes a peroxy bleach compound, and a transitional metal catalyst which comprises a source of Mn and/or Fe ions and a defined macrocyclic organic ligand. The zeolite is zeolite P having a silicon to aluminum ratio not exceeding 1.33 (zeolite MAP). The compositions show improved stability of the bleach catalyst against discoloration on storage, as compared with similar compositions containing conventional zeolite A.

Particulate bleaching detergent compositions containing zeolite map and

Bleach catalyst composition in the form of non-friable composite granules. Each granule is free from easily oxidisable organic materials and comprises a manganese complex catalyst; optionally an inert salt and a binding agent. Detergent compositions comprising such granules have good peroxide and enzyme stability.

Bleach catalyst composition, manufacture and use thereof in detergent

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

Novel bleach and oxidation catalysts, a method of bleaching substrates using these catalysts and bleaching (detergent) compositions containing the catalysts are reported. The catalysts are manganese complexes of formula:

Bleach activation by manganese-based coordination complexes

Novel bleach and oxidation catalysts, a method of bleaching substrates using these catalysts and bleaching (detergent) compositions containing the catalysts are reported. The catalysts are a manganese-based co-ordination complex of the general formula:

Bleach activation multinuclear manganese-based coordination complexes

Concentrated detergent powder compositions having a bulk density of above 600 g/l, preferably at least 610 g/l, more preferably from 650 g/l to 1200 g/l, and comprising a surfactant, a detergency builder, enzymes, a peroxygen compound bleach, and a manganese complex as effective bleach catalyst are disclosed. Specifically preferred manganese complexes are:

Concentrated detergent powder compositions

Peroxy compound bleaching is activated by a catalytic amount of a transition metal complex of a transition metal (Mn, Co, Fe or Cu) with a non-(macro)-cyclic ligand of the formula: ##STR1## preferably 2,2'-bispyridylamine. Bleaching agent and bleach detergent compositions are also disclosed comprising a peroxy compound bleach and said transition metal complex. The transition metal complex is an effective catalyst for activating hydrogen peroxide compounds, peroxyacids and peroxyacid bleach precursors on removing a wide class of stains from substrates, especially texiles and fabrics.

Bleach activation

A stable and effective manganese complex for use as a peroxy compound bleach catalyst is disclosed, the catalyst being a water-soluble complex of manganese (II), (III), or (IV) or mixtures thereof with a ligand which is a non-carboxylate polyhydroxy compound having at least three consecutive C--OH groups in its molecular structure. Bleaching composition comprising a peroxy compound and the catalyst, as well as process for bleaching substrates using said catalyst are also disclosed. Preferred ligand is sorbitol and preferred catalyst is Mn-sorbitol complex.

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Rotterdam, Netherlands

Marten R Van Vliet