Mixing of asphalt emulsion and aggregate in aqueous bituminous emulsion-aggregate slurries
US4462840A · kind A · utility
38Cited by
12References
12Claims
0Family size
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Key dates
| Filing date | Jun 20, 1983 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Jun 20, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved mixing process for aqueous bituminous emulsion-aggregate slurries is disclosed whereby cationic emulsions are prepared by emulsifying bitumen, such as an asphalt, in water with a new kind of cation-active emulsifier which is the product of the reaction of a polyamine with certain polycarboxylic acids wherein one or more additives selected from the group consisting of a polyamine, ammonia, magnesium sulfate, cupric sulfate, chromium chloride, ferric sulfate or dilute sulfuric acid is added to the mixing water to extend the mixing time and to give mixes with good flowability and flotation characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.