Argillaceous gypsum
US9266779B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2010 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Additives selected from primary, secondary, and tertiary alkyl amines and quaternary alkyl ammonium compounds are added to argillaceous gypsum compositions comprising comb polymers to improve the workability thereof. Argillaceous gypsum compositions, dispersing agents, a method for producing argillaceous gypsum compositions, and molded parts that can be produced from the gypsum compositions are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.