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US 6,440,921 B1Granted
Bleaching compositions
AssigneeThe Procter & Gamble Company
InventorsGloria Di Capua, Pierre Antoine Dresco, Stefano Scialla
Life of this patent
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Abstract
The present invention relates to a bleaching composition comprising a pre-formed peroxycarboxylic acid and a surfactant system comprising at least two surfactants. These compositions are stable to deliver improved bleaching performance while also being safe to color and fabric. Furthermore, the compositions herein are also chemically and physically stable upon prolonged periods of storage time.
Claims20
An aqueous bleaching composition comprising:
- a) from 0.1% to 10% by weight, of a pre-formed peroxygen bleach having the formula:
- wherein R is C1-C20 alkylene;
- each R1 is hydrogen, alkyl, hydroxyl, nitro, halogen, amine, ammonium, cyano, carboxy, sulphate, sulphonate, and mixtures thereof;
- b) from 0.01% to 30% by weight, of a surfactant system comprising at least two surfactants selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, and mixtures thereof;
- c) from 2% to 4% by weight, of a stabilizer;
- d) from 0.1% to 5% by weight, of a soil suspending polymer;
- e) from 0.01% to 10% by weight, of a dye transfer inhibitor;
- f) from 0.05% to 1.2% by weight, of a brightener;
- and
- g) the balance carriers and other adjunct ingredients.
7 more elements
An aqueous bleaching composition comprising:
- a) from 10% to 40% by weight, of a pre-formed peroxygen bleach having the formula:
- wherein R is C1-C20 alkylene;
- each R1 is hydrogen, alkyl, hydroxyl, nitro, halogen, amine, ammonium, cyano, carboxy, sulphate, sulphonate, and mixtures thereof;
- b) from 0.01% to 30% by weight, of a surfactant system comprising:
- i) from 20% to 80% by weight, of an alkyl sulphonate surfactant;
- ii) from 20% to 80% by weight, of an alkyl ethoxy sulfate surfactant;
- c) from 2% to 4% by weight, of a stabilizer;
- d) from 0.1% to 5% by weight, of a soil suspending polymer;
- e) from 0.01% to 10% by weight, of a dye transfer inhibitor;
- f) from 0.05% to 1.2% by weight, of a brightener;
- and
- g) the balance carriers and other adjunct ingredients.
9 more elements
An aqueous bleaching composition comprising:
- a) from 10% to 40% by weight, of a pre-formed peroxygen bleach having the formula:
- b) from 0.01% to 30% by weight, of a surfactant system comprising:
- i) from 20% to 80% by weight, of an alkyl sulphonate surfactant;
- ii) from 20% to 80% by weight, of an alkyl ethoxy sulfate surfactant;
- c) from 0.01% to 1.5% by weight, of a chelant;
- and
- d) the balance carriers and other adjunct ingredients.
4 more elements
Dependencies are inferred from the claim text.