Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Reexamination Certificate
2005-01-19
2009-10-27
Klemanski, Helene (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
C564S512000, C516S043000, C516S914000
Reexamination Certificate
active
07608142
ABSTRACT:
According to the invention, a slow setting bitumen-aggregate mix for cold paving is manufactured by a) preparing a cationic oil-in-water emulsion of bitumen in the presence of an emulsifier containing i) a tertiary polyamine selected from the group consisting of a di(C2-C3alkylene)triamine, a tri(C2-C3alkylene)tetraamine, a tetra(C2-C3alkylene)pentaamine, a penta(C2-C3alkylene)hexaamine, a hexa(C2C3alkylene)heptaamine or a mixture thereof, which amine compounds have only tertiary amine groups and contain one or two aliphatic groups with 8-22 carbon atoms, bound to a nitrogen atom, while the remaining nitrogen substituents are methyl groups and ii) an acid present in such an amount that the aqueous emulsion obtains a pH value from 1-6, preferably 1.5-5, and b) mixing the aqueous emulsion obtained with a solid aggregate. The present invention also comprises a tertiary polyamine selected from said group of tertiary polyamines or a salt thereof with an acid, a process for the production of said tertiary amine, as well as the use of the tertiary polyamine salt as an emulsifying or cohesion increasing agent.
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International Search Report for International Application No. PCT/EP2005/000564, Oct. 19, 2005.
Edengrim Christos
Thorstensson Bengt-Arne
Akzo Nobel N.V.
Klemanski Helene
Mancini Ralph J.
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