Ultra-fast setting cement based on amorphous calcium aluminate comprising a surface treatment
US10221098B2 · kind B2 · utility
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Key dates
| Filing date | May 13, 2015 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | May 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is an ultra-fast setting cement composition including at least amorphous calcium aluminate including by weight, as compared to amorphous calcium aluminate total weight, (a) from 35 to 55% of calcium oxide CaO (C), (b) from 19 to 55% of alumina Al2O3 (A), the C/A molar ratio being higher than or equal to 1.5, preferably higher than or equal to 1.7, characterized in that amorphous calcium aluminate is coated with a surface treatment including an organic compound having at least two hydrophilic functions and one hydrophobic chain. Also disclosed is a method to produce the cement composition, as well as to uses thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.