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

1991-09-17

1993-12-07

Yarbrough, Amelia Burgess

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106278, 1062844, 2523115, 525 542, 525 56, 525 69, 525104, 525166, 525178, C08L 9500

Patent

active

052680290

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 polyfunctional nitrogenized carboxylic acid, particularly a salt of alkaline metal or of amine of mono- and di (hydroxy-2 ethyl) glycine 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: 3047414 (1962-07-01), Katz
patent: 4576648 (1986-03-01), Demangeon et al.
Derwent Abstract Acc. No. 80-51341C, Lisnitsin et al, Russian Patent No. 708520, Nov. 30, 1979.

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