Cationic aqueous bituminous emulsion-aggregate slurries
US4447269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cationic oil in water type bituminous-aggregate slurries capable of being worked are disclosed. The slurries contain a densely graded aggregate, from about 8% to about 20% of an aqueous emulsion based on the weight of the aggregate, wherein the emulsion is comprised of from about 55% to about 65% of bitumen based on the weight of the emulsion, from about 0.5% to about 2%, based on the weight of the emulsion, of the reaction products of one or more polyamines and a polycarboxylic acid of the general formula ##STR1## wherein x and y are integers from 3 to 9, x and y together equal 12, at least one Z is a carboxylic acid group and any remaining Z is hydrogen, as emulsifier, and water to make up 100% by weight. Additionally, from about 4% to about 16% water, based on the weight of the aggregate, is added to form a slurry of the aggregate and the emulsion; and up to 3% of an additive selected from the group consisting of lime and cement is employed to reduce the setting time of the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.