摘要 |
A chemical emulsifier useful to produce a cationic asphalt emulsion of different breaking characteristics, to be applied in road construction and maintenance, the emulsifier comprising a compound obtained by the reaction between a natural wood resin, colophony resin and an amine, whereby, as a result of said reaction, water is liberated as a by-product and primary, secondary and tertiary amino groups are incorporated as substituents to the resin molecules.
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