Amphoterics as emulsifiers for bituminous emulsions
US4478642A · kind A · utility
28Cited by
27References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1983 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Jun 20, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2395/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel amphoteric emulsifiers are disclosed for solventless and solvent containing mixing grade, oil-in-water anionic and cationic bituminous emulsions, which emulsifiers are the modified reaction products of polyamines with certain polycarboxylic acids and sulfonated carboxylic acids. Modifications are carried out by reacting the nitrogen-containing intermediate with formaldehyde and sodium sulfite or bisulfite, chloroalkane sulfonic acid salts, .gamma.-propane sultone, chloroalkane phosphonic acids, acrylic acid, fumaric acid, maleic acid and chloroethanoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.