Color-safe bleach boosters, compositions and laundry methods employing same
AssigneeThe Procter & Gamble Company
InventorsGregory Scot Miracle, Robert Richard Dykstra
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Abstract
Bleach boosters comprising quaternary imine zwitterions are disclosed. The bleach boosters increase bleaching effectiveness in lower temperature solutions and demonstrate superior color safety profiles. The bleach boosters are ideally suited for inclusion into bleaching compositions including those with detersive surfactants and enzymes. Also provided is a laundry additive product including quaternary imine zwitterions. A method for laundering a fabric employing the bleach boosters of the present invention is also disclosed.
Claims19
A bleaching composition comprising:
- a peroxygen source and a bleach booster having the formula:
- ##STR33## wherein R.sup.1 -R.sup.3 is hydrogen or an unsubstituted or substituted radical selected from the group consisting of phenyl, aryl, heterocyclic ring, alkyl and cycloalkyl radicals;
- R.sup.1 and R.sup.2 form part of a common ring;
- T has the formula:
- ##STR34## wherein x is equal to 0 or 1;
- J, when present, is selected from the group consisting of --CR.sup.11 R.sup.12 --, --CR.sup.11 R.sup.12 CR.sup.13 R.sup.14 --, and --CR.sup.11 R.sup.12 CR.sup.13 R.sup.14 CR.sup.15 R.sup.16 --;
- R.sup.7 -R.sup.16 are selected from the group consisting of H, linear or branched C.sub.1 -C.sub.18 substituted or unsubstituted alkyl, alkylene, oxyalkylene, aryl, substituted aryl, substituted arylcarbonyl groups, and amide groups;
- provided that at least one of R.sup.7 -R.sup.8 must be H or methyl, and that when neither R.sup.9 nor R.sup.10 is H, one of R.sup.7 -R.sup.8 must be H;
- Z is covalently bonded to J.sub.x when x is 1 and to C.sub.b when x is 0;
- and Z is selected from the group consisting of--CO.sub.2.sup.-, --SO.sub.3.sup.- and --OSO.sub.3.sup.-, and a is 1;
- provided that when x is equal to 0, then at least one of R.sup.7 -R.sup.10 is not H;
- and provided that when x is equal to 1, then at least one of R.sup.7 -R.sup.16, when present, is not H.
A zwitterionic bleach booster compound selected from:
- ##STR37## where R.sup.17 is selected from the group consisting of linear or branched C.sub.1 -C.sub.18 substituted or unsubstituted alkyl.
A laundry additive product comprising:
- a laundry additive, said additive comprising a bleach booster having the formula:
- ##STR38## wherein R.sup.1 -R.sup.3 is hydrogen or an unsubstituted or substituted radical selected from the group consisting of phenyl, aryl, heterocyclic ring, alkyl and cycloalkyl radicals;
- R.sup.1 and R2 form part of a common ring;
- T has the formula:
- ##STR39## wherein x is equal to 0 or 1;
- J, when present, is selected from the group consisting of --CR.sup.11 R.sup.12 --, --CR.sup.11 R.sup.12 CR.sup.13 R.sup.14 --, and --CR.sup.11 R.sup.12 CR.sup.13 R.sup.14 CR.sup.15 R.sup.16 --;
- R.sup.7 -R.sup.16 are selected from the group consisting of H, linear or branched C.sub.1 -C.sub.18 substituted or unsubstituted alkyl, alkylene, oxyalkylene, aryl, substituted aryl, substituted arylcarbonyl groups, and amide groups;
- provided that at least one of R.sup.7 -R.sup.8 must be H or methyl, and that when neither R.sup.9 nor R.sup.10 is H, one of R.sup.7 -R.sup.8 must be H;
- Z is covalently bonded to J.sub.x when x is 1 and to C.sub.b when x is 0;
- and Z is selected from the group consisting of --CO.sub.2.sup.-, --SO.sub.3.sup.- and --OSO.sub.3.sup.-, and a is 1;
- provided that when x is equal to 0, then at least one of R.sup.7 -R.sup.10 is not H;
- and provided that when x is equal to 1, then at least one of R.sup.7 -R.sup.16, when present, is not H;
- said additive being in dosage form for addition to a laundry solution.
Dependencies are inferred from the claim text.