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US 4,994,266 AGranted
Perfumery compositions
AssigneeBush Boake Allen Limited
InventorBrian L. Wells
Life of this patent
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Abstract
A toilet rinse block is free of para-dichlorobenzene and includes a fragrance alcohol in the form of a metal complex (e.g., citronellol aluminate) that releases the fragrance upon rinsing with water.
Claims6
A solid toilet rinse block, which comprises:
- from 0.1 to 15 percent by weight of a fragrance alcohol in the form of a metal complex from which the fragrance alcohol is released upon contact of the complex with water;
- from 10 to 65 percent by weight of a surfactant selected from the group consisting of anionic surfactants, non-ionic surfactants and mixtures thereof;
- from 2 to 10 percent by weight of a substantially water-insoluble polymeric binder;
- and
- 5 to 45 percent by weight of a filler selected from the group consisting of water soluble and water-insoluble materials;
- said block being substantially free of water and containing at least 2 percent by weight but below 30 percent by weight of water insoluble ingredients;
- whereby when the block is positioned in the bowl of a water-flushing toilet, controlled small amounts of the solid block are dissolved away at each flush, with the result that the metal complex content of the block is exposed gradually to water.
4 more elements
Dependencies are inferred from the claim text.