Akzo Nobel N.v.

Akzo Nobel Chemicals International B.v.

Alan Duncan James

Sundaram Logaraj

Premnathan Naidoo

Julia Mary Wates

Ralph Franklin

Dale S Steichen

Hua Yu

Dennis Selse

Qiong Zhou

Daniel Hagberg

Bengt-Arne Thorstensson

Christine Cornelia Gorsuch

Jon B Staley

Thomas William Himmel

A method renders the surface of bitumen materials to be non-tacky, and minimize or eliminate the loss of the bitumen materials to traffic. The method may also be used on top of prime coat and fog seal, to reduce tackiness of bitumen materials from cured bitumen emulsions, and to decrease unnecessary and unwanted tracking by passing traffic.

Method for producing bituminous coatings with reduced tackiness

The invention relates to an additive for a bitumen emulsion, which is a specific mixture of alkoxyiated compounds with low and high amounts of alkylene oxide units, in combination with a polyaluminum compound. Using this additive it is possible to prepare an aqueous slow-setting bitumen emulsion-aggregate mix suitable for cold paving of roads, parking places, sidewalks, and the like.

Bitumen emulsion containing polyaluminum compounds

The present invention generally relates to an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising a) surfactant component, and b) an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of a i) a wax component and ii) a resin component. The invention also relates to a warm mix asphalt having improved compaction at lower temperatures, and to a pavement made from said warm mix asphalt.

Asphalt modifiers for 'warm mix' applications including adhesion promoter

The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.

Polyamide emulsifier based on polyamines and fatty acid/carboxylic acid for oil based drilling fluid applications

The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.

Adhesion and cohesion modifiers for asphalt

A method of emulsifying asphalt using a polyamine polybetaine, preferably a dibetaine, as an emulsifier or co-emulsifier and an emulsion of asphalt, water and a polybetaine, preferably a diamine dibetaine. The advantages of using a polyamine polybetaine as an emulsifier or co-emulsifier include its ability to provide superior cationic and anionic emulsions, and slow-setting emulsions at low use levels, and the excellent adhesion of the cured asphalt film.

Polybetaines as asphalt emulsifiers

A method of emulsifying asphalt using a polyamine polyoxide, preferably a diamine dioxide, as an emulsifier or co-emulsifier and an emulsion of asphalt, water and a polyamine polyoxide, preferably a diamine dioxide. The advantages of using a polyamine polyoxide as an emulsifier or co-emulsifier include its ability to provide superior cationic and anionic emulsions, and slow-setting emulsions at low use levels, and the excellent adhesion of the cured asphalt film.

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Chicago, IL, United States of America

Alan Duncan James