Gypsum set accelerator and method of making the same
US6221151A · kind A · utility
16Cited by
17References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Aug 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition for accelerating the setting reaction of an aqueous calcined gypsum slurry, and a method of making the same are disclosed. The composition includes a vibratory ball milled mixture of calcium sulfate dihydrate and a surfactant. The composition is prepared by subjecting the mixture to the high-frequency, low-impact grinding action of a vibratory ball mill. The resultant composition has a potency superior to that of conventional gypsum set accelerators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.