Pitch emulsions
US8557138B2 · kind B2 · utility
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49References
25Claims
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Key dates
| Filing date | Jul 31, 2009 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An emulsion of pitch in water preferably characterized by having a lower level of tack on drying by virtue of using as the emulsifying agent a fatty acid, a chemically modified fatty acid, a rosin acid, a chemically modified rosin acid, or combinations thereof, especially a tall oil fatty acid, or a chemically modified tall oil fatty acid, where the pitch emulsion is useful for reducing the development of fugitive dust in a dust-forming material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.