Viscosifiers for asphalt emulsions
US4859245A · kind A · utility
16Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Feb 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Bituminous emulsion viscosifiers are disclosed to be prepared by condensation of the residue obtained from the distillation of crude tall oil or tall oil derived fatty acids and resin acids (rosin) with various amines, which when added to the asphalt before emulsification produce emulsions of a higher viscosity than the emulsion prepared with the asphalt without the additive, at the same or reduced bitumen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.