Akzo Nobel Chemicals International B.v.

Nouryon Chemicals International B.v.

Saudi Arabian Oil Company

Kemira Oyj

Per Anders Restorp

Anders Törncrona

Ayman Mohammed Almohsin

Hans Olof Lagnemo

Jin Huang

Mohammed Abudullah Bataweel

Prasad Baburao Karadkar

Christina Nyholm

Johan Lif

Bo Andreasson

Peter Harry Johan Greenwood

Joakim Erik Patrik Högblom

Nils Erik Ronne

Arne Olov Roland Andersson

Helena Bergenudd

Andreas Sundblom

Ulf Jonas Anders Engstrom

Andreas Ake Sundblom

Joakim Erik Patrik HÖGBLOM

Ulf Jonas Anders ENGSTRÖM

The invention relates to a process for the manufacture of thermally expandable thermoplastic microspheres. The process comprises, providing a mixture of monomeric materials suitable for polymerisation to form a thermoplastic polymer and at least one blowing agent, providing to the mixture a colloidal silica that is surface-modified with at least hydrophobic organosilane groups and forming an emulsion. A polymerisation is performed to form the thermally expandable thermoplastic microspheres. The invention further relates to thermally expandable thermoplastic micro spheres, expanded micro spheres and their use in the manufacture of products.

Thermally expandable thermoplastic microspheres and process for their preparation

The disclosure is directed to a method for preparing an adhesive composition, in which an aqueous phase comprising a modified colloidal silica is mixed with an organic phase comprising one or more monomers in the presence of an initiator, wherein conditions are maintained such that polymerisation of the one or more monomers occurs to form an aqueous polymeric dispersion, wherein;

Adhesive compositions

A composition useful for subterranean water or gas shut off applications includes organosilane-modified colloidal silica and an accelerator. The accelerator includes one or more organic or inorganic salts. A method of using a composition, including an organosilane-modified colloidal silica and an accelerator, includes forming a fluid system that is flowed to a formation in a subterranean zone, such as through a wellbore, where the composition forms a gel to plug the formation and shut off water flow into the wellbore.

Composition and method for water and gas shut-off in subterranean formations

The present invention relates to a water-soluble cationic acrylamide-based polymer having one or more acetoacetate groups. The invention also relates to a method for producing the water-soluble polymer which comprises polymerizing ethylenically unsaturated monomers in an aqueous phase, wherein the monomers comprise (a) (meth)acrylamide, (b) ethylenically unsaturated cationic monomer, (c) ethylenically unsaturated monomer having one or more acetoacetate groups, and (d) optionally other ethylenically unsaturated monomer. The invention further relates to the use of the water-soluble polymer as a strength agent in the production of paper and board. The invention further relates to a process for producing paper and board which comprises providing an aqueous cellulosic suspension, adding to the suspension water-soluble polymer having one or more ketone groups, and dewatering the obtained suspension. The invention further relates to paper and board comprising the water-soluble polymer of the invention, as well as paper and board produced by the process of the invention.

Polymer and its preparation and use

The present invention relates to a particle of modified silica which comprises a particle of silica which is covalently linked to at least one halohydrin moiety. Furthermore, the present invention relates to a method of preparing the particle of modified silica, a particle of modified silica obtained by such method, use of the particle of modified silica as a stationary phase for chromatography, as well as a separation column for chromatography comprising the particle of modified silica.

Particle of modified silica

Compounds according to formula (I) or formula (II) wherein Rand R, independently from each other, are chosen among hydrocarbons having from 1 carbon atom up to 30 carbon atoms, with the proviso that at least one of Rand Rare chosen among hydrocarbons having at least 8 carbon atoms, and A is a halogen. Use of compounds as hydrophobing agent, such as sizing agent.

Chemical compounds

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Göteborg, Sweden

Per Anders Restorp