To obtain an additive composition for asphalt having high antistripping effects between asphalt and aggregates, and their immediate effectivity by compounding a specific compound and a component selected from among mineral oil, a carboxylic acid and its triglyceride.
This composition comprises (A) 100 pts.wt. of a compound of the formula: [R1O-(PO)m(EO)n]xP(=O)-(OH)y (PO is oxypropylene; m is 0 to 4, average addition number of the PO in mole; EO is oxyethylene; n is 0 to 6, and is an average number of addition of the EO in mole; R1 is an 8 to 22C hydrocarbon; x is 1 to 2; y is a number satisfying x+y=3), and (B) 25 to 400 pts.wt. of one or more kind of components selected from mineral oil, an 8 to 18C alcohol and an 8 to 18C carboxylic acid and their triglyceride. The mineral oil having freezing point or fluid point of ≤0°C or triglyceride are preferred as the component (B). Concretely, kerosene, soy oil and tall oil are preferred. The preferable viscosity of the composition at 25°C is ≤500 Pa.S from the stand points of stickiness, workability and the like.
TAMAOKI RYOICHI
ISOBE KAZUO
