Compound of calcium carbonate and of tobermorites, its manufacture and its applications
US3998651A · kind A · utility
45Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1974 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Nov 1, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A compound of calcium carbonate and of hydrated tobermorites, constituted of 70 to 15% tobermorites, which may contain free hydrated silica in amounts to 0 to 15% in weight expressed in SiO.sub.2, and of 30 to 85% calcium carbonate. The process includes completely hydrating white Portland cements between about 5 and 100.degree. C to form a paste having a dry extract of 5 to 70% by weight until at least a decrease in the pH-value occurs. The compound is an industrial charge particularly for paper-making and paint-making industries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.