Cationic emulsions of bituminous binders of the type bitumen/pol

Details Cationic emulsions of bituminous binders of the type bitumen/pol Cationic emulsions of bituminous binders of the type bitumen/pol

1988-07-08

1989-11-07

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 60, 524 68, 524 55, 524123, 2523115, C08K 517, C08K 553, C08L 500, C08L 9500

Patent

active

048793264

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.
patent: 4772148 (1988-09-01), Demangeon et al.

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