Laundering aid for preventing dye transfer
AssigneeThe Procter & Gamble Company
InventorsRajan Keshav Panandiker, Yousef Georges Aouad, Sherri Lynn Randall, William Conrad Wertz
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Abstract
A laundry additive article comprising an insoluble polymeric amine dye absorber physically adhered to an insoluble substrate is disclosed. The insoluble polymeric amine dye absorber is dye-selective, preferentially binding fugitive dyes in a wash solution, rather than detergent components or fabrics. The laundry additive article may comprise additional components including a dye transfer inhibitor and a signal to visually indicate that fugitive dyes have been scavenged.
Claims25
A laundry additive article effective for selectively absorbing and inhibiting transfer of extraneous dyes in a wash solution, said article comprising:
- a) an insoluble substrate for introduction into a wash solution;
- b) a dye absorber comprising a substantially insoluble polymeric amine fixably adhered to said substrate;
- c) optionally, a dye transfer inhibitor releasably associated with said substrate.
A method of making a laundry additive article effective for selectively absorbing and inhibiting transfer of extraneous dyes in a wash solution, said method comprising the steps of:
- a) selecting an insoluble substrate capable of retaining a fixed dye absorber and optionally, releasing a dye transfer inhibitor into a wash solution;
- b) fixably adhering an absorbing effective amount of a substantially insoluble polymeric amine dye absorber;
- and
- c) optionally, introducing a dye transfer inhibitor to said insoluble substrate;
- wherein said dye absorber and said optional dye transfer inhibitor are simultaneously or sequentially introduced to said insoluble substrate.
A method for preventing transfer of extraneous dyes in a wash solution comprising the steps:
- a) adding to said wash solution a cleaning effective amount of detergent;
- b) adding to said wash solution a laundry additive article designed for selectively absorbing and inhibiting transfer of extraneous dyes in a wash solution before or after addition of articles and/or garments;
- said article comprising:
- (i) an insoluble substrate;
- (ii) a dye absorber comprising a substantially insoluble polymeric amine fixably adhered to said substrate;
- and
- (iii) optionally, a dye transfer inhibitor releasably associated with said substrate;
- c) leaving said laundry additive article in contact with said wash solution during an entire laundering cycle;
- and
- d) optionally, leaving said laundry additive article with said articles and/or garments when they are placed in a clothes dryer.
Dependencies are inferred from the claim text.