Multigrade asphalt powder additive

A method of making a multigrade additive composition for asphalts which comprises:

• a) providing at least one saponifiable organic acid;
• b) providing at least one resin acid;
• c) providing at least one unsaturated organic compound;
• d) providing an alkali metal base;
• e) combining the least one saponifiable organic acid, the at least one resin acid and the alkali metal base together to form a reaction mixture that undergoes a saponifying reaction;
• f) removing water from the reaction mixture during the saponifying reaction;
• and
• g) recovering the reaction product.

A multigrade asphalt which comprises:

• a) a preformed reaction product of:
• i) at least one saponifiable organic acid;
• ii) at least one resin acid;
• iii) at least one unsaturated organic compound;
• and
• iv) an alkali metal base;
• combined together with
• b) an asphalt material.

A method of making a multigrade asphalt which comprises:

• a) combining and reacting together:
• i) at least one saponifiable organic acid;
• ii) at least one resin acid;
• iii) at least one unsaturated organic compound;
• and
• iv) an alkali metal base to form a reaction product;
• and
• b) combining the reaction product with an asphalt material.