Leuco polymers as bluing agents in laundry care compositions
US10377977B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of obtaining a laundry care composition, the method comprising the steps of (a) reacting a compound with a polymer to form a leuco polymer and (b) mixing the leuco polymer with at least one laundry care ingredient. The compound includes at least one leuco moiety and at least one electrophilic group. The polymer is comprised of co-monomers of an aryl dicarboxylate, an oxyalkyleneoxy and an oxypolyalkyleneoxy and the polymer comprises at least one moiety selected from the group consisting of hydroxy, sulfhydryl, primary amine and secondary amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.