Methods and compositions for treating laundry items
US9624615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Nov 2, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for inhibiting dye transfer between items of laundry in a fabric treating appliance including a treating chamber for receiving the fabric items for treatment according to a cycle of operation, the method including supplying liquid to the treating chamber to form a liquid mixture comprising the liquid and free dye molecules and dye absorbers in solution or in suspension within the liquid mixture. At least one of ultraviolet (UV) or visible light spectroscopy may be conducted on the liquid to define at least one of an absorbance or fluorescence value indicative of a level of at least one of the dye absorber or complex in the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.