Titanium dioxide slurries having improved stability
US6569920B1 · kind B1 · utility
27Cited by
18References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Aug 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides slurries and methods of making slurries having improved stability comprising below about 78 weight-percent rutile titanium dioxide based on the total weight of the slurry, an amorphous alumina compound surface treated titanium dioxide, a polyacrylic acid dispersing agent having a molecular weight in the range of from about 2,000 to about 5,000 that is neutralized with a neutralizing agent having a monovalent group, and water; wherein the slurry has a pH of from about 6 to about 8. The slurries of the present invention resist gel formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.