Lever Brothers Company

Edward Santos

Michael Paul Aronson

David J Lang

Kil Whan Chun

Michele R Lock

Allan H Gilbert

A particle for releasing bleach is provided combining from 50 to 99.5% of a core consisting essentially of an oxidizing material and from 0.5 to 20% of a polycarboxylate coating surrounding the core. These particles are particularly useful in automatic dishwasher powder detergent compositions.

Encapsulated bleach particles for machine dishwashing compositions

A bleach particle is provided whose core is an intimately dispersed agglomerated mixture of a halogen bleaching agent, an inorganic phosphate salt and a binder with melting point 85.degree. to 120.degree. F. In the preferred composition there is present dichloroisocyanurate, sodium tripolyphosphate and lauric acid, respectively. These core particles have a uniform round shape, are of high strength and obtainable in good yields.

Particles containing active halogen bleach in a diluted core

Hard spherical bleaching particles are disclosed whose composition is an intimately dispersed agglomerated core mixture of an active halogen oxidizing material, an inorganic diluent salt and a binder. The cores are coated with a mixture of from about 70-85% of a C.sub.16 -C.sub.18 fatty acid soap and from about 15-30% of a C.sub.12 -C.sub.14 fatty acid soap. A method for bleaching substrates as well as a process for preparing the bleach particles are disclosed.

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Guttenberg, NJ, United States of America

Edward Santos