High shear asphalt compositions

Details High shear asphalt compositions High shear asphalt compositions

1996-01-17

1998-05-12

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

C08L 9500, C09D19500

Patent

active

057499535

ABSTRACT:
A method to saponify the naturally-occurring acids found in asphalts is disclosed. The method utilizes sodium hydroxide (or other strong base), added to asphalt which is then subjected to high shear mixing, at an elevated temperature. The method disclosed may be used in conjunction with polymers and other modifiers added to asphalt to enhance the asphalt's performance. The asphalt prepared in accordance with the method is used in road applications, roofing applications and numerous specialty applications which use asphalt as the base material. The asphalt prepared in accordance with the method can be used hot, liquefied with solvents or emulsified with water and surfactants.

REFERENCES:
patent: 4874432 (1989-10-01), Kriech et al.
patent: 5221703 (1993-06-01), Ostermeyer

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