Cleaning compositions for solid surfaces – auxiliary compositions – Auxiliary compositions for cleaning – or processes of preparing – Textile softening or antistatic composition
Patent
1998-11-03
2000-11-07
Seidleck, James J.
Cleaning compositions for solid surfaces, auxiliary compositions
Auxiliary compositions for cleaning, or processes of preparing
Textile softening or antistatic composition
510475, 8142, 524322, C11D 300, D06L 122
Patent
active
061437131
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to articles of manufacture comprising fabric appearance enhancing polyamines and methods for enhancing the appearance of fabric, said articles being applied in an automatic clothes dryer. The polyamine fabric appearance enhancers in addition to color and whiteness fidelity, also provide fabric conditioning benefits.
BACKGROUND OF THE INVENTION
Modern fabric comprises synthetic materials (e.g., Dacron), natural fibers (e.g., cotton), as well as blends thereof, however many skilled in the laundry art consider fabric to have two embodiments: white fabric and colored fabric. The consumer has long recognized the need to delineate between colored and white clothing. It was the common "wash-day" observation that many colored fabrics had a propensity to "bleed" into the laundry liquor and deposit onto other fabrics that led to the practice of sorting clothes into white fabric and colored fabric. In addition, because of problems with color fading, dyed fabric can not be laundered at the hotter water temperatures typical for whites. Once sorting became a standard practice within the laundry art, separate processes and materials evolved for cleaning these separated white and dyed fabric. The introduction of hypochlorite bleach into the laundry process, because it is not compatible with many fabric dyes, solidified the establishment of white and dyed material as the two major laundry categories.
Hypochlorites are among the most common non-surfactants used to enhance the appearance of white, non-dyed fabrics. These bleaches chemically destroy the colored stains present on white fabric and it is generally regarded that for highly conjugated, fixed stains, the first treatment with bleaching agents oxidizes the stain-producing molecules to a non-colored or less colored species that is subsequently removed in the rinse cycle. For more difficult stains, further treatment with bleach is necessary, although the over usage of bleach can damage even white fabric. The desire to enhance fabric whiteness appearance has led to the development of many adjunct laundry ingredients. One such material is optical brighteners added to reduce the yellow cast that develops on white fabrics after successive washings.
Optical brighteners have no other purpose than to enhance the appearance of fabric. Indeed, many synthetic fabrics have optical brighteners built into the fibers or fixed onto the synthetic fabric during manufacture. These additional brightening agents help to compensate in part for the yellow cast that develops when non-colored fabrics are washed in water containing heavy metal ions. However despite the use of bleaches, the incorporation of brighteners into the fabric, and other whiteness enhancing materials, some level of dinginess still persists on many white fabrics after several washings.
For colored fabrics a different set of fabric enhancement principles exists. Although dyed and white fabrics often comprise the same natural or synthetic materials, many of the dyes used to color fabrics are susceptible to the harsh bleaching conditions used to "whiten" non-dyed fabrics. The desire to remove stains from dyed fabric has provided further impetus for the development of separate non-damaging bleaching materials for colored fabrics. However, safe stain removal is only one issue that is connected to colored fabrics. Colored materials must be guarded against fading, a condition where the original color is lost due to one or more conditions. The problems of fading, change in color intensity, or color hue are even more perceptible than the "yellowing" of whites. In fact, consumers are well aware that garments comprising different materials, but having the same color, may fade at different rates in the laundry process. Therefor, non-soiled garments loose their "new" appearance simply from washing alone, and agents are needed to enhance their appearance, that is to make the fabric appear more "new-like".
Surprisingly, the materials disclosed in the present invention provide for
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Baker Ellen Schmidt
Hartman Frederick Anthony
Littig Janet Sue
Ecler, Sr. Richard S.
Rajguru U. K.
Rasser Jacobus C.
Seidleck James J.
The Procter & Gamble & Company
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