Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1999-06-30
2000-12-05
Hardee, John R.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
C11D 330, C11D 337
Patent
active
061567221
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to heavy duty laundry detergent compositions, in either liquid or granular form, which contain certain types of dye fixative materials to impart appearance benefits to fabrics and textiles laundered in washing solutions formed from such compositions.
BACKGROUND OF THE INVENTION
It is, of course, well known that alternating cycles of using and laundering fabrics and textiles, such as articles of worn clothing and apparel, will inevitably adversely affect the appearance of the fabric and textile items so used and laundered. Fabrics and textiles simply wear out over time and with use. Laundering of fabrics and textiles is necessary to remove soils and stains which accumulate therein and thereon during ordinary use. However, the laundering operation itself, over many cycles, can accentuate and contribute to the deterioration of the appearance of such fabrics and textiles.
Repeated laundering of fabrics and textiles, especially with bleach-containing laundry products, can remove dye from fabrics and textiles and impart a faded, worn out appearance as a result of diminished color intensity, and in many cases, as a result of changes in hues or shades of color. Dye fixative materials have been used in the textile indusrty to improve the washfastness of certain dyes. Typically such materials are cationic polymers which are able to form ion pairs with the dye on fabrics, thereby reducing the solubility of the dye. Such cationic dye fixative materials, however, cannot typically be used in laundry detergents due to the potential of the cationic fixative to form precipitates with the anionic surfactants that are generally employed in laundry detergent products. Such precipitation can reduce the cleaning efficiency of the detergent.
Given the foregoing, there is clearly an ongoing need to identify materials which could be added to anionic surfactant-containing laundry detergent products and which could associate themselves with the fibers of the fabrics and textiles laundered using such detergent products and thereby reduce or minimize the tendency of the laundered fabric/textiles to deteriorate in appearance. Any such detergent product additive material should, of course, be able to benefit fabric appearance without unduly interfering with the ability of the laundry detergent to perform its fabric cleaning function. The present invention is directed to detergent compositions containing certain types of dye fixative materials that perform in this desired manner.
SUMMARY OF THE INVENTION
The laundry detergent compositions herein comprise from about 1% to 80% by weight of a detersive surfactant which comprises an anionic surfactant component, from about 0.1% to 80% by weight of an organic or inorganic detergency builder, and from about 0.1% to 5% by weight of certain types of non-precipitating dye fixative materials. The detersive surfactant and detergency builder materials can be any of those useful in conventional laundry detergent products. The useful dye fixative materials are selected from those marketed under the tradenames Sandofix SWE.RTM., Sandofix WA.RTM., Cassofix FRN-300.RTM., Tinofix EW.RTM., Sandolec CT.RTM., Sandolec CS.RTM., Sandolec C1.RTM., Sandolec CF.RTM., Sandolec WA.RTM. and Polymer VRN.RTM.. Combinations of these selected dye fixative materials may also be used.
In its method aspect, the present invention relates to the laundering of fabrics and textiles in aqueous washing solutions formed from effective amounts of the detergent compositions described herein, or formed from the individual components of such compositions. Laundering of fabrics and textiles in such washing solutions, followed by rinsing and drying, imparts fabric appearance benefits to the fabric and textile articles so treated. Such benefits can include improved overall appearance, and antifading.
DETAILED DESCRIPTION OF THE INVENTION
As noted, the laundry detergent compositions of the present invention essentially contain anionic detersive surfactant, detergent builder and cert
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Luipold Lee Ann
Panandiker Rajan Keshav
Randall Sherri Lynn
Dressman Marianne
Hardee John R.
Miller Steven W.
The Procter & Gamble & Company
Zerby Kim William
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