Process for producing hydrophobic particulate inorganic oxides
US6736891B1 · kind B1 · utility
32Cited by
13References
17Claims
0Family size
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Key dates
| Filing date | Aug 11, 2000 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described is an improved process for producing hydrophobic particulate inorganic oxides useful for reinforcing polymeric compositions, e.g., rubber, by using a certain amount of 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 hydrophobizing the filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.