Rapid and medium setting high float bituminous emulsions from difficult asphalts
US5336438A · kind A · utility
21Cited by
15References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 3, 1991 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Jul 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High float asphalt emulsions with high demulsibilities are prepared from asphalts ill-suited for prior art emulsifiers by mixing a combination of fatty acid and the reaction products of fatty acid with acrylic acid, methacrylic acid, fumaric acid, or maleic anhydride in the form of their alkali salts in the soap solution, and adding to the heated asphalt, prior to the emulsification step, reaction products of fatty acids with mono-, di-, and triethanol amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.