Anionic bituminous emulsions

Details Anionic bituminous emulsions Anionic bituminous emulsions

1996-08-12

1997-09-16

Szekely, Peter A.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 59, 524 60, C08L 9500

Patent

active

056681976

ABSTRACT:
This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers, solvents, or polymer latices. Particularly, the invention relates to improved methods for enhancing adhesion between the asphalt and the aggregate in avionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers. The adhesion promoters utilized in these improved methods are the reaction products of styrene (.alpha.-methyl styrene)-acrylic (metacrylic) acid polymers with polyalkylene amines. Further improvement can be obtained by using tall oil fatty acid or fortified tall oil fatty acids as co-reactants in the production of the polyamidoamine products.

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European Patent Application number 82305420.0, publication number 0 077 632; inventor: Dalter, Raymond S., date of filing: Dec. 10, 1982.

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