Methods of using leuco colorants as bluing agents in laundry care compositions
US11142727B2 · kind B2 · utility
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5References
7Claims
0Family size
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Key dates
| Filing date | Oct 11, 2018 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Oct 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for treating textile articles including the steps of: (a) providing a laundry care composition comprising a leuco composition; (b) adding the laundry care composition to a liquid medium; (c) placing the textile articles in contact with the liquid medium; (d) depositing at least some portion of the leuco composition onto the textile articles; (e) optionally, rinsing the textile; and (f) drying the textile articles, wherein the leuco composition comprises a leuco colorant with a Photoresistance Index of less than or equal to 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.