Emulsifiers for bituminous emulsions
US4561901A · kind A · utility
34Cited by
30References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Oct 5, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reaction products of polyamines with certain polycarboxylic acid anhydrides are modified by reacting with formaldehyde and sodium sulfite or bisulfite, formaldehyde and phosphorus acid, haloalkane sulfonic acid salts, .gamma.-propane sultone, haloalkane phosphoric acid, acrylic acid, fumaric acid, maleic acid and haloalkanoic acids which give emulsions capable of producing medium set mixing grade asphalt emulsions, rapid set asphalt emulsions, and quick set slurry seal emulsions. Solventless asphalts as well as asphalts containing up to 15% by volume of a hydrocarbon oil can be used for emulsification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.