Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-06-20
1999-06-15
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510309, 510312, 510313, 510320, 510352, 510475, 510499, 510501, 510503, C11D 337, C11D 339, C11D 3395, C11D 360
Patent
active
059122218
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to laundry detergent compositions capable of providing color care benefits.
BACKGROUND OF THE INVENTION
The laundering of colored garments is well recognized by the consumer, as well as the detergent manufacturer, as being a delicate operation, in that it may involve issues such as dye bleeding from fabrics, and dye transfer between fabrics, during the laundry process; these phenomenon may lead to the undesirable result of color alteration of the laundered garments.
One aspect of this concern can be addressed by using dye transfer inhibiting polymers in laundry detergent compositions. These polymers have the ability to complex or absorb the fugitive dyes washed out of dyed fabrics before the dyes have the opportunity to become attached to other articles in the wash.
Such polymers which have been disclosed for use within detergent compositions to inhibit dye transfer are water-soluble species, and include vinylpyrrolidone polymers, polyamine N-oxide polymers and copolymers of vinylpyrrolidone and N-vinylimidazole.
It has now been surprisingly found that if a water-insoluble system containing said polymer is used, excellent color fidelity benefits, i.e. not only excellent dye transfer inhibition, but also anti-fading benefits are provided.
It has further been found that a synergistic dye transfer inhibition action is obtainable if said water-insoluble systems are used in combination with the known water-soluble species above.
SUMMARY OF THE INVENTION
The present invention relates to laundry detergent compositions comprising a polymeric dye transfer inhibiting agent, characterized in that the polymeric dye transfer inhibiting agent is substantially water-insoluble.
DETAILED DESCRIPTION OF THE INVENTION
The compositions of the present invention comprise as an essential element a substantially water-insoluble dye transfer inhibiting agent.
The substantially water insoluble polymeric dye transfer inhibition agent may consist of a water-soluble dye transfer inhibition polymer, bound to a water-insoluble carrier, or it may consist of a dye tranfer inhibition polymer which in itself is water-insoluble. By substantially water insoluble, it is meant that the polymeric dye transfer inhibition agents should have a solubility in deionized water at 20.degree. C. of less than 1 g/liter.
Water-insoluble carriers for water-soluble polymers include inorganic materials such as zeolites as described hereinafter as detergent ingredients and clays, such as kaolinites, smectites, hectorite types, as well as silicas such as Gasil 200 and Sorbsil ex Crossfield Chemicals.
Additionally, organic water-insoluble materials such as fatty alcohols having an alkyl chain length of at least 14 carbon atoms, esters of fatty acids of an alkyl chain length of at least C18 with lower monohydric alcohols can be used as carriers herein; organic polymeric materials are also suitable, such as those described in EPA 397 245, defined by their molecular weight, melting point and hardness value.
Also suitable are AVICEL.RTM., microcristalline cellulose, or other glucose derivatives, such as chitin, or chitosan, as well as starch derivatives.
For the polymers themselves, water insolubility can be achieved by cross-linking, either starting from the known water soluble dye transfer inhibiting polymers, such as polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidone polymers, polyvinyloxazolidones and polyvinylimidazoles or mixtures thereof, or starting from monomers of the above polymers.
Water insolubility can, in the case of non-cross-linked polymers, also be achieved by selecting very high molecular weight range, or by copolymerizing, or by varying the degree of oxidation if appropriate, depending on the polymer. Preferred for use herein are cross-linked polymers:
Cross-linked polymers are polymers whose backbone are interconnected to a certain degree; these links can be of chemical or physical nature, possibly with active groups on the backbon
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Busch Alfred
Cachet Thierry Laurent
Convents Andre Christian
Joos Conny Erna Alice
Van Leeuwen Petrus Johannes
Bolam Brian M.
Echler, Sr. Richard S.
Hertzog Ardith
Procter & Gamble Company
Zerby Kim William
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