Use of salts of polyaspartic acids as milling agents
US5998526A · kind A · utility
2Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Feb 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Salts of polyaspartic acids are used as milling agents for the milling of mineral materials to obtain aqueous suspensions of finely divided mineral materials which are pumpable and non-sedimenting, and have high concentrations of mineral materials which are useful in papermaking and in paper coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.