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US 2002/0173440 A1Published application
Bleaching composition of enhanced stability and a process for making such a composition
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsAndrew Paul Chapple, Antonius Henricus J. Strijbosch
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Abstract
The invention relates to an air bleaching catalyst that has been coated with a polymer that serves to promote the stability of the air bleaching catalyst. The invention also provides a method of coating the air bleaching catalyst.
Claims12
An air bleaching composition having improved storage properties, for bleaching a substrate in an aqueous solution, comprising:
- particles of an air bleaching catalyst in the form of a granule comprising a transition metal complex;
- and, a component selected from the group consisting of:
- a cogranulent with said granule, a binder of said granule, and a coating of said granule, the component being an acidic component.
A process for the preparation of an air bleaching composition the air bleaching composition having improved storage properties comprising the step of:
- granulating an air bleaching catalyst with a component selected from the group consisting of:
- binder, cogranulent, and a coating, the component selected being acidic.
Dependencies are inferred from the claim text.