Compositions – Preservative agents – Anti-corrosion
Patent
1988-06-08
1990-11-13
Lieberman, Allan M.
Compositions
Preservative agents
Anti-corrosion
106205, 106277, 2523115, 524 61, 524 98, 524 99, 524104, 524115, 524121, 524126, B01F 1716, B01F 1720, C08L 500, C08L 7500
Patent
active
049700251
ABSTRACT:
This invention provides cationic emulsions of bituminous binders of the bitumen/polymer type, formed by a dispersion of an organic phase of the binder in an aqueous phase containing a cationic nitrogenous emulsifier and a mineral or organic acid, the acid being in appropriate quantity so that the pH of the aqueous phase is comprised between 3 and 9. The aqueous phase also contains an agent consisting of at least one water-soluble sequestering salt of phosphonic acid, particularly a salt of alkaline metal or of amine of hydroxyalkyl-1,1-diphosphonic acid, and optionally a water-soluble thickening agent. To obtain the emulsions, which are usable for road applications, the emulsifying agent, the sequestering agent and optionally the thickening agent may be used in the form of a premixture containing the agents and called cationic emulsifying system.
REFERENCES:
patent: 2862831 (1958-12-01), Mertens
patent: 4171295 (1979-10-01), Frese et al.
patent: 4370170 (1983-01-01), Tolonen et al.
patent: 4494992 (1985-01-01), Schilling et al.
patent: 4576648 (1986-03-01), Denangeon et al.
Demangeon Francis
Lopez Emile
ELF France
Lieberman Allan M.
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