Treated titanium dioxide
US5910213A · kind A · utility
11Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigmentary material comprises particulate titanium dioxide the particles of which have been treated with a polymeric hindered amine stabiliser. The stabiliser is a polymer having a main chain substantially free of acidic groups and having hindered amine stabilising groups. The stabilising groups comprise at least 35 per cent by weight of the polymer. Preferably, the titanium dioxide particles are also treated with an organic compound such as a polyhydric alcohol, an alkanolamine, a polysiloxane or a fatty acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.