Kaolinite aggregation using organo-silicon compounds
US4935062A · kind A · utility
6Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1989 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Mar 28, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A particulate kaolin pigment which enhances gloss and printability properties when used as a coating pigment for paper and enhances light scattering and opacifying properties when incorporated as a filler in paper, is obtained by mixing a fine particle kaolin with an aggregating agent comprising an organic silicon compound such as tetramethoxy silane or tetraethoxy silane. The feed kaolin moisture content is in the range of above 2.0 to about 5.0%, preferably 2.5 to 4.0% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.