| abstract |
The present invention provides: [1] a polyester emulsion for modifying asphalt, which contains water and polyester particles having a volume median particle diameter (D 50 ) of 20–500 nm; [2] a production method for the polyester emulsion for modifying asphalt [1], which includes a step in which an aqueous medium is added to melted polyester that has a weight-average molecular weight of 2,000–100,000; and [3] an asphalt emulsion composition containing an asphalt emulsion and the polyester emulsion [1]. |