Dye-transfer inhibition

Dye setting, control of, 9 493-498 Dyesite content, of polymer fibers, 11 195 Dye solubility, modification of, 9 509 Dye stability, in color photography, 19 263 Dyestuff migration, 9 231-232 Dyestuff production trends in, 9 294t United States, 9 295 West European, 9 294t Dyestuffs industry, growth of, 9 238-239 Dye-transfer inhibition system, 10 284 Dye transfer system, in color photography, 19 242... 

Sodium xylenesulfonate, sodium cumenesulfonate Sodium citrate, sodium tripolyphosphate Enzymes (stain remover), borax (cleaning aid), sodium formate, calcium chloride (enzyme stabilizing system), hydrogen peroxide (bleach), soil release polymers (soil release), polyvinylpyrrolidone (dye transfer inhibition)... 

Fabric and color care are areas that have received considerable emphasis over the past decade. The introduction of hydrophobically modified cellulosics (Liquifiber), multiple variants based upon derivatives of PVP technology for dye transfer inhibition, and a wealth of recent patent applications on polymeric additives to improve... 

TABLE E Recent Patents (1995-2004) on HDLDs with Dye Transfer Inhibition ... 

Several interesting bleach catalysts are described in recent patent literature and are currently under evaluation. Fe-TAML (tetraamido macrocyclic ligand), for example, was selected from a large number of similar tetraamido complexes, and has excellent dye transfer inhibition properties, as it selectively destroys many dyes dissolved in the wash liquor [37]. The catalyst is being tested in several applications, such as effluent bleaching, the pulp and paper industry, desulfurization of diesel, and decontamination [38]. 

Recently, Novo has marketed Guardzyme, a heme-containing peroxidase which catalyzes the hydrogen peroxide bleaching of colored dyes and stains. The oxidative process is aided by a mediator and has been applied for dye transfer inhibition and stain bleaching [42]. A laccase or polyphenoloxidase aided by a mediator has been used for dye transfer inhibition [43]. With this system, the oxidant oxygen is reduced to water. 

Antiredeposition, dye transfer inhibition, resistance to hard water, enzyme stability, or other added benefits Excellent safety and environmental profile... 

Since the monoamine ethoxylates show good dye transfer inhibition proper-... 

TABLE Dye Transfer Inhibition Dosage Curve for Amine Ethoxylate... 

TABLE 8 Dye Transfer Inhibition Properties of Di- and Triamine Ethoxylates at 0.1 g/L... 

TABLE 9 Dye Transfer Inhibition Properties of Tetra-and Pentamine Ethoxylates with 10 Mole EO ... 

TABLE 10 Dye Transfer Inhibition of Tallowtriamine 12 Mole Ethoxylate (TT-12EO) vs. PVP... 

The formulations listed in Tables 21 through 26 illustrate the practical applications of alkanolamides and their ethoxylates. Amide ethoxylates, particularly tallow, are very cost-effective nonionics however, they can be dark in color. Amide ethoxylates, Uke most nitrogen-containing surfactants, do possess dye transfer inhibition properties. 

CAPB has excellent dye transfer inhibition properties. This snrfactant can be used in laundry detergent formulas, where mildness and dye transfer inhibition are important performance criteria. The formulated blends A through E can act as starting-point formulation guidelines for such products. Fine-fabric washes and laundry prespotters can also be formulated using these blend compositions as starting point. Examples of the finished laundry product formulations are in Tables 29 through 34. 

Owing to their excellent dye transfer inhibition properties, amine oxides can be used in a wide variety of laundry product formulations like laundry detergents, softergents, laundry prespotters, tine-fabric washes, etc. Amine oxides act as foam stabilizers and foam enhancers for anionic surfactants and therefore amine oxides are used in manual dishwash and shampoo formulations where foam volume, foam quality, and stability are important performance criteria. Some starting formulations using amine oxides are listed in Tables 66 through 70. 

TABLE 65 Dye Transfer Inhibition Comparison of Various Nitrogen Surfactants... 

Amphoterics are not normally found in detergents or prewash products because of their high cost. The benefits of using them include mildness, cleaning, wetting, enzyme compatibility, dye transfer inhibition, and foaming. Examples of amphoterics are cocamidopropyl betaine, sodium cocamphoproprionate, and cocamidopropyl hydroxysultaine. 

The most common product used to prevent dye transfer is PVP, polyvinyl pyrrolidone. This product is used for dye transfer inhibition and antiredeposition. PVP is not a surfactant, has no cleaning ability itself. The testing for dye transfer can be found in another ASTM method [23], which is summarized in Table 5. Delta E (total color difference) is presented as an average of three different color values. The lower the number, the more desirable. 

Uses / dditive for fabric softeners providing dye transfer inhibition in the next wash cycle and long-tenn color protection Properties Lt. colored liq. 85% act. 

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