Modified silane treated pigments or fillers and compositions containing the same
US6894089B2 · kind B2 · utility
12Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Sep 9, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/66
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a composition comprising a white pigment or extended white pigment surface treated with a silane having at least one functional group capable of reacting with acids and anhydrides, at least one polymeric material and a compatibilizer. Once treated, the pigment has improved processability and dispersibility in polymeric materials. Silanizing the pigment also enhances the brightness (increase whiteness and reduce yellowness) of the pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.