Polymer structured clay pigment and method of preparing the same
US6156117A · kind A · utility
13Cited by
24References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 1, 1998 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Sep 1, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/82
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing a polymer structured pigment slurry which comprises providing an anionic, aqueous slurry including a plurality of solid mineral particles, adding a low molecular weight, cationic polymer in an amount of less than about 0.20% by weight to the slurry and then adding a small amount of an inorganic dispersant to the polymer treated pigment slurry. The Malvern median particle size of the mineral particles treated with the polycationic polymer is less than about 20% larger than the Malvern median particle size of the untreated mineral particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.