Mica-free joint compound
US4286995A · kind A · utility
20Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1980 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Mar 27, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/023
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A joint compound, having crack resistance substantially equal to joint compounds containing mica, wherein the mica has been replaced by low length to width ratio gypsum crystals formed by the hydration of calcium sulfate to calcium sulfate dihydrate, particularly crystals formed in the presence of citric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.