Cement grinding aids prepared with waste antifreeze
US10077211B2 · kind B2 · utility
0Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Mar 30, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
It discloses cement grinding aids prepared with waste antifreeze which comprises the following components in parts by weight: 20-75 parts of pretreated waste antifreeze, 5-40 parts of alkanolamine, 1-5 parts of acid solution, 3-12 parts of saccharide and 15-50 parts of water. The pretreated waste antifreeze is prepared by adding an alkaline solution into waste antifreeze to regulate the pH value, adding a flocculant, and stirring and standing; separating upper-layer oil, and then filtering to remove flocculent precipitates, thus obtaining a clear mixed solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.