Akzo Nobel N.v.

Akzo Nobel Chemicals International B.v.

Boris Kuzmanovic

Cornelis Elizabeth Johannus Van Lare

René Lodewijk Maria Demmer

Jan Barend Westerink

Gerrald Bargeman

Mateo Jozef Jacques Mayer

Maarten André Irène Schutyser

Antoon Ten Kate

Cornelis Johannes Govardus Van Strien

Johan Lif

Michael Zeitler

Rolf Edvinsson-Albers

Johanna Christina Speelman

Ulf Schröder

Colin Eric Bartel

Leif Kenny Christian Gustafson

Martin Stefan Hanson

Cornald Van Strien

Cornelis Elizabeth Van Lare

Rene Lodewijk Demmer

Maarten Andre Schutyser

Mateo Jozef Mayer

The present invention relates to a process to prepare ethylene amines by the amination of ethylene oxide, ethylene glycol or ethanolamine in the presence of a catalyst, comprising a step wherein methylamine and/or ethylamine are removed from the reaction effluents.

Process to prepare ethylene amines

The present invention relates to a method to electroplate or electropolish a metal on a substrate wherein an ionic liquid is selected from the group of NRRRRXor NRRRRYis employed as electrolyte, and a metal salt added to the ionic liquid is employed as the metal source or a metal anode is used as the metal source, wherein any one of Rto Rindependently represents a hydrogen, alkyl, cycloalkyl, aryl, or aralkyl group that may be substituted with a group selected from OH, Cl, Br, F, I, phenyl, NH, CN, NO, COOR, CHO, COR, or OR, at least one of Rto Ris a fatty alkyl chain, and one or more of Rto Rcan be a (poly)oxyalkylene group wherein the alkylene is a Cto Calkylene and the total number of oxyalkylene units can be from 1 to 50 oxyalkylene units, and at least one of Rto Ris a Cto Calkyl chain, Ris an alkyl or cycloalkyl group, X&#x2212; is an anion having an N-acyl sulphonylimide anion (&#x2014;CO&#x2014;N&#x2014;SO&#x2014;) functionality, Yis an anion compatible with the NRRRRammonium cation, such as a halogenide anion, a carboxylate anion, a sulphate (both organic and inorganic sulphate), sulphonate, carbonate, nitrate, nitrite, thiocyanate, hydroxide, or sulphonylimide anion.

Method to electrodeposit metals using ionic liquids

The present invention relates to process to prepare a chlorine-containing compound using an aqueous salt solution containing at least 100 g/l of sodium chloride and a contaminating amount of polyvalent cations comprising the steps of (i) preparing an aqueous salt solution containing at least 100 g/l of sodium chloride and at least 0.01 ppm of polyvalent cations by dissolving a sodium chloride source in water, (ii) adding an effective amount of at least one positive retention enhancing component to the aqueous solution, (iii) subsequently subjecting the solution to a nanofiltration step, thereby separating the solution into a retentate which is enriched for polyvalent cations and a permeate which is the purified aqueous salt solution, (iv) reacting the chloride anions in the permeate to a chlorine-containing compound by an electrolysis step, and (v) recycling at least part of the retentate to dissolution step (i).

Process to prepare chlorine-containing compounds

The present invention relates to a process to prepare salt comprising the following steps: (i) preparing an aqueous salt solution containing at least 100 g/l of sodium chloride and at least 0.01 ppm of polyvalent cations by dissolving a sodium chloride source in industrial water, (ii) adding an effective amount of at least one positive retention enhancing component to the aqueous salt solution, (iii) subsequently subjecting the solution to a nanofiltration step, thereby separating the solution into a retentate which is enriched for the polyvalent cations and a permeate which is the purified aqueous salt solution, and (iv) concentrating the permeate to produce salt.

Process to prepare salt

The invention pertains to removing soluble alkali metal or ammonium salt of a divalent anion from brine comprising following steps: obtaining brine with NaCl-concentration between 150g/L and saturation in the presence or absense of a cyrstal growth inhibitor for NaCl(GCI-NaCl),or with NaCl concentration above saturation in the presence of a CGI-NaCl, said brine optionally comprising a crystal growth inhibitor for the alkali metal or ammonium salt of the divalent anion(CGI-DA); if necessary, acidify the solution to pH&#x3c;11.5; if the concentration of CGI-DA is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; subjecting the solution to a membrane filtration; if the concentration of CGI-DA in the concentration from the separation is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; crystalling the concentration; removing the crystallized alkali metal or ammonium salt of the divalent anion.

Method for crystallizing soluble salts of divalent anions from brine

The invention relates to a process for the production of hydrogen peroxide comprising a liquid-liquid extraction step, said extraction step comprising contacting an organic feed solution containing hydrogen peroxide with an extraction solvent comprising less than about 30 wt % of water to achieve extraction of hydrogen peroxide to said extraction solvent and obtaining an extract containing hydrogen peroxide.

Process for the production of hydrogen peroxide

Growing community of inventors

Essen, Germany

Boris Kuzmanovic