Cationic aqueous bituminous aggregate slurries for hot climates
US5328505A · kind A · utility
41Cited by
11References
10Claims
0Family size
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Key dates
| Filing date | Sep 14, 1993 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Sep 14, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L95/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the blend of the reaction of a polyamine or of a modified polyamine with certain polycarboxylic acids and glycol esters. The emulsifiers are obtained by reacting suitable polyalkylene amines with lignin and maleinized lignin or their blends with tall oil fatty acids and the reaction product of C.sub.8 -C.sub.15 alkylphenol with 30 to 100 moles of ethylene oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.