Process for producing chemically treated amorphous precipitated silica
US7704552B2 · kind B2 · utility
6Cited by
35References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | May 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described is an improved process for producing chemically treated fillers by using a certain combination of functionalizing and hydrophobizing agents in an aqueous suspension of inorganic oxide having a pH of 2.5 or less and increasing the pH of the suspension after chemically treating the filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.