Leuco colorants and compositions
US10717874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2018 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A leuco composition comprises at least one leuco compound, the leuco compound comprising a leuco moiety and a polyalkyleneoxy moiety covalently bound to the leuco moiety. The polyalkyleneoxy moiety comprises at least one ethylene oxide group and at least one propylene oxide group. A laundry care composition comprises (a) at least one laundry care ingredient and (b) a leuco composition as described above. A method of treating a textile includes the steps of (a) providing such a laundry care composition; (b) adding the laundry care composition to a liquid medium; (c) placing textile articles in the liquid medium; (d) optionally, rinsing the textile; and (e) drying the textile articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.