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US 9,868,856 B2Granted
Polymer stabilizers for bituminous emulsions
AssigneeAkzo Nobel Chemicals International B.V.
InventorsRalph Franklin, Qiong Zhou
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AssigneeAkzo Nobel Chemicals International B.V.
InventorsRalph Franklin, Qiong Zhou
Estimating the term…
A mineral-compatible cationic emulsion composition with polymer stabilizers, and methods for utilizing same in paving and other applications is disclosed. In one aspect, a bitumen-in-water emulsion composition includes at least one bitumen material, at least one polymer stabilizer, at least one emulsifier, and water, where the emulsifier is a cationic surfactant, an amphoteric surfactant, or a mixture of both, and the polymer stabilizer is a natural or synthetic cationic polymer consisting of alkylene polyamines, alkyl polyamines, polyquaternary polymers, polyvinylamine, polyvinylimidazoline, polyester polyquaternary polymers, polyether polyquaternary polymers, or mixtures thereof. The inclusion of polymer stabilizer in the cationic emulsion increases the stability of the emulsion and increases the compatibility of the cationic emulsion with negatively charged minerals.
A bitumen-in-water emulsion composition comprising at least one bitumen material, at least one polymer stabilizer, at least one emulsifier, and water,
An additive composition suitable for use with a mixture of bitumen material and aggregates, the additive composition comprising from about i) 10 to 50% by weight of a natural or synthetic cationic polymer comprising a cross-linked cationic polymer resulting from polycondensation of dimethylamine, epichlorohydrin, and ethylenediamine, and combinations and mixtures thereof, and ii) from about 50 to 90% of a cationic or amphoteric surfactant, wherein the additive composition improves the stability of the mixture of bitumen material and aggregates and renders the mixture compatible with mineral selected from the group consisting of bentonite, montmorillonite, illite, kaolinite, muscovite, chlorite, and combinations and mixtures thereof.
Dependencies are inferred from the claim text.