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The article discusses the results of evaluating the influence of phosphoric ester of oxyethylated nonylphenol (PE NP) on solvent asphalt-resin-paraffin deposits efficiency. Comparative experiments of the changes in solvent technological characteristics, when the content of PE NP is up to 2 vol. %, have been performed. The research shows that usage PE NP significantly not only modifies the solvent technological properties increasing the solvency, the saturation of the solvent asphalt-resin-paraffin deposits, but slightly decreases the rate of the asphalt-resin-paraffin deposits dissolution. We have established that the maximum efficiency of the solvent is observed at concentration of PE NP corresponding to the critical concentration of micelle formation.

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EVALUATING THE INFLUENCE OF PHOSPHORIC ESTER OF OXYETHYLATED NONYLPHENOL ON TECHNOLOGICAL CHARACTERISTICS OF SOLVENTS OF ASPHALT-RESIN-PARAFFIN DEPOSITS