Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1996-08-12
1998-07-07
Lovering, Richard D.
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
106278, 10628406, 2523115, 252356, C08L 9500
Patent
active
057762341
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 such as styrene butadiene rubbers (SBR), styrene block copolymers (SBS), ethylene vinyl acetate copolymers (EVA), and other suitable modifiers. The invention also relates to emulsions modified by the incorporation of solvents (such as diesel oil or kerosene) or by the addition of polymer latices (such as SBR-latex or natural rubber latex). More particularly, the invention relates to improved methods for enhancing adhesion between asphalt and aggregate in anionic 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-maleic anhydride 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 producing the polyimidoamine products.
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Lovering Richard D.
McDaniel Terry B.
Metzmaier Daniel S.
Reece IV Daniel B.
Schmalz Richard L.
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