Cationic titanium dioxide pigments
US7452416B2 · kind B2 · utility
3Cited by
16References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | May 17, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition containing cationic pigment particles includes titanium dioxide particles to which are bound a first water-soluble cationic polymer and cationic polymer latex particles. In some embodiments the cationic latex is made by treating an anionic latex with a second water-soluble cationic polymer, which may be the same as or different from the first water-soluble cationic polymer. The compositions may be used in papermaking applications, both for internal addition and or coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.