Asphalt emulsions
US5667576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are oil-in-water asphalt emulsions comprising asphalt dispersed as the discontinuous phase in an aqueous continuous phase, the emulsions containing one or more anionic emulsifiers selected from the group consisting of compounds of the formulas (Ia), (Ib), (II), and (III) EQU (R.sup.1 CH(OH)--(CH.sub.2).sub.m SO.sub.3).sub.1 X (Ia) EQU (R.sup.1 CH.dbd.CH(CH.sub.2).sub.m-1 SO.sub.3).sub.1 X (Ib) EQU (R.sup.2 O--(AlkO).sub.c CH.sub.2 COO).sub.1 X (II) EQU ((R.sup.3).sub.x --(A)--SO.sub.3).sub.1 X (III) wherein R.sup.1, R.sup.2, and R.sup.3 are C.sub.6-40 hydrocarbyl, m is 1-10, X is --H or a cation, c is 1-20, A is phenyl or polycyclic aromatic, k is 1-3, and i is the valence of X.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.