Asphalt emulsions containing amphoteric emulsifier
US5558702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D195/005
- 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 amphoteric emulsifiers selected from the group consisting of compounds of the formulas (a) and (b) EQU R.sup.4 --(OC.sub.3 H.sub.6).sub.o-1 --(C(O)NH(CH.sub.2).sub.1-3).sub.0-1 --N(Z.sup.1) (Z.sup.2).sub.0-1 --ZCOOX (a) EQU R.sup.4 --(OC.sub.3 H.sub.6).sub.o-1 (C(O)NH(CH.sub.2).sub.1-3 --N(Z.sup.1)(Z.sup.2).sub.0-1 --ZSO.sub.3 XH (b) wherein R.sup.4 is C.sub.4-24 alkyl or alkylene, f is 1-6, is --H or a cation, Z is (CH.sub.2).sub.f, CH.sub.2 CHOHCH.sub.2, or CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2, and Z.sup.1 and Z.sup.2 are C.sub.f H.sub.2f+1 or C.sub.f H.sub.2f OH, or in (a) Z.sup.1 can be --ZCOOX.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.