Asphalt compositions and methods of preparation thereof

Details Asphalt compositions and methods of preparation thereof Asphalt compositions and methods of preparation thereof

1997-03-31

2000-02-29

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 304

Patent

active

060310294

ABSTRACT:
Systems and methods for combining a mineral acid and a polymer additive in an asphalt composition are described. Methods of preparing a polymer modified asphalt include providing a source of a neat asphalt; heating the neat asphalt; providing a source of a polymer; adding the polymer to the neat asphalt to form a blend; providing a source of a dilution asphalt; and adding the blend to the dilution asphalt to form a diluted product. The systems and methods provide advantages in that the addition of the mineral acid widens the temperature range in which satisfactory performance from a given polymer asphalt composition can be achieved or, as a corollary, reduces the amount of polymer additive that would otherwise be needed to achieve satisfactory performance within a given temperature range.

REFERENCES:
patent: 3751278 (1973-08-01), Alexander
patent: 4741868 (1988-05-01), Rooney et al.
patent: 4882373 (1989-11-01), Moran
patent: 5348994 (1994-09-01), Gorbarty et al.
patent: 5637141 (1997-06-01), Puzic et al.

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