Optically brightened latexes
US11866525B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2019 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Dec 28, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/58
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method of preparing an aqueous composition by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of at least one water-soluble diaminostilbene disulphonic optical brightener, as well as to the aqueous composition obtainable by said method, the use of said aqueous composition for optically brightening of a cellulosic substrate and the cellulosic substrate treated with the aqueous composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.