Lever Brothers Company, Division of Conopco, Inc.

Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Pamela C Lam

Stephen A Madison

Nancy Ann Falk

Dry bleach compositions particularly suitable for cleaning of hard surfaces or fabrics which, upon mixing with water, form a mixture that is easily removed from surfaces upon standing.

Dry bleach compositions

A bleaching composition and method is described that includes contacting a substrate with a peroxygen compound and a polymeric bleach precursor which has a monomer repeating unit of the structure: ##STR1## wherein R is hydrogen or a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl and aryl radicals; and

Polymeric bleach precursors and methods of bleaching substrates

A bleach precursor compound, its peroxygen derivative, and detergent compositions containing these materials are disclosed herein. The bleach precursors structurally comprise a pair of different diesters, one ester containing an electrically-charged functional group. Perhydrolysis of the precursor in the presence of hydrogen peroxide and a basic aqueous media generates a peroxycarboxylic acid.

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Congers, NY, United States of America

Pamela C Lam