Detergent additive absorbed into a porous hydrophobic material having a hydrophobic coating
AssigneeThe Procter & Gamble Company
InventorsAthanasios Surutzidis, Roger J. Jones
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Abstract
The present invention provides a detergent additive comprising a water-soluble or water-dispersible detergent active compound such as enzyme characterized in that said compound is mixed with a surfactant before absorption into a porous hydrophobic material such as silica, said porous material subsequently being coated with a hydrophobic material such as silicone oil. Detergent compositions containing said additive are also encompassed.
Claims10
A particulate detergent additive comprising a mixture of a surfactant and an effective amount a water-soluble or water-dispersible detergent active absorbed into the pores of a porous hydrophobic silica having an average pore diameter larger than the size of the molecules of the detergent active, said porous hydrophobic silica containing the absorbed mixture of surfactant and detergent additive being coated completely with a hydrophobic coating material or a water-insoluble water-permeable polymeric material, provided that:
- (a) the detergent active is selected from enzymes, bleaches, bleach activators, bleach catalysts, photoactivators, dyes, fluorescers and fabric conditioning agents, and
- (b) the absorbed surfactant is present in an amount sufficient to wet the hydrophobic silica and to permit the detergent additive to be readily desorbed during washing conditions.
Dependencies are inferred from the claim text.