Akzo Nobel N.v.

Nouryon Chemicals International B.v.

Akzo Nobel Chemicals International B.v.

Hans Oskarsson

Martin Hellsten

Elliot I Band

Ingemar Uneback

John André Janiak

Kristan Alexander Rus

Lynnette Susan Bowen

Elliot Isaac Band, Jr

The present invention relates to the use of a specific group of acylated nitrogen-containing compounds as anti-agglomerants for gas hydrates. The anti-agglomerants are surface active nitrogen-containing compounds with 1-7 nitrogen atoms, which compounds have at least two hydrophobic groups with 6-24 carbon atoms, and where the hydrophobic groups are connected to the remainder of the molecule by an amine moiety or an amide moiety, and which compounds have at least one C2-C5 acyl group; or a salt thereof. The invention also relates to a method for inhibiting the agglomeration of gas hydrates in a conduit, and compositions comprising the gas hydrate anti-agglomerant, a corrosion inhibitor and/or a paraffin deposition inhibitor.

Nitrogen-containing anti-agglomerants for preserving the fluidity of fluids containing gas hydrates

The application relates to compositions comprising di-fatty-alkyl or -alkenyl polyalkylamines of the general formula (I) or (II), to a process for their preparation which involves a cyanoethylation step and a hydrogenation step, and their use as demulsifiers for oil-in-water emulsions, corrosion inhibitor, fuel additive, anti-scaling agent, asphalt additive, enhanced oil recovery agent for oil-wells, cutting-oil additive, and anti-static agent. The product show good performance combined with a favourable viscosity profile. 

Dialkyl-polyalkylamine compositions, process for their preparation and their use

The present invention relates to the use of a specific group of alkoxylated and/or acylated non-quaternary nitrogen-containing compounds as anti-agglomerants for gas hydrates. The invention also relates to a method for inhibiting the agglomeration of gas hydrates in a conduit, and compositions comprising the gas hydrate anti-agglomerant, a corrosion inhibitor and/or a paraffin deposition inhibitor.

Additive for preserving the fluidity of fluids containing gas hydrates

The present invention relates to the use of a zwitterionic surfactant in combination with an ether sulphate or ether carboxylate surfactant in a water-based system as a drag-reducing agent. The combination has besides a high drag-reducing effect also a low sensitivity to hard water.

Use of a zwitterionic surfactant together with an anionic ether-containing surfactant as a drag-reducing agent

Zwitterionic surfacant together with an anionic ether-containing surfactant as a drag-reducing agent

Growing community of inventors

Stenungsund, Sweden

Hans Oskarsson