Acylated citrate esters as peracid precursors
AssigneeThe Procter & Gamble Company
InventorsFrederick E. Hardy, Alan D. Willey, Stefano Scialla
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Abstract
The present invention relates to acylated citrate esters to be used as peracid precursors in a bleaching or a disinfecting operation. The present invention encompasses the use of these acylated citrate esters, granular or liquid compositions comprising the acylated citrate esters. Activating compositions are described as well as activated bleaching compositions.
Claims19
A method for bleaching or disinfecting fabric, said method comprising the step of contacting fabric in need of bleaching or disinfection with an aqueous solution comprising:
- a) a peracid precursor having the formula:
- ##STR4## wherein R is selected from the group consisting of C.sub.1 -C.sub.9 alkyl, C.sub.1 -C.sub.9 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R" is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R"' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- provided that R', R", and R"' are not all hydrogen;
- and mixture of said peracid precursor;
- and
- b) a source of hydrogen peroxide selected from the group consisting of hydrogen peroxide, a hydrogen peroxide generating compound, and minutes thereof;
- and wherein said peracid precursor and said source of hydrogen peroxide are individually employed in an amount sufficient to react together to form an effective amount of peracid to bleach or disinfect the fabric.
A bleaching or disinfecting composition comprising:
- a) a peracid precursor having the formula ##STR5## wherein R is selected from the group consisting of C.sub.1 -C.sub.9 alkyl, C.sub.1 -C.sub.9 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R" is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- R"' is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkenyl, phenyl, sulpho-substituted phenyl, alkylphenyl, alkenylphenyl, and mixtures thereof;
- provided that R', R", and R"' are not all hydrogen;
- and mixture of said peracid precursor;
- b) a source of hydrogen peroxide selected from the group consisting of hydrogen peroxide or a hydrogen peroxide generating compound;
- and
- c) one or more conventional detergency ingredients selected from the group consisting of surfactants, buffering agents, soil release agents, soil suspending agents, enzymes, builders, dyes, perfumes, opacifiers, hydrogen peroxide stabilizers, and fluorescent whitening agents;
- wherein said peracid precursor and said source of hydrogen peroxide are individually employed in an amount sufficient to react together in an aqueous solution to form an effective amount of peracid to bleach or disinfect a substrate.
Dependencies are inferred from the claim text.