Omya International Ag

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Coatex

Omya Iniernational Ag

Omya Development Ag

Samuel Rentsch

Patrick A C Gane

Matthias Buri

René Vinzenz Blum

Matthias Welker

Fabio Ippolito

René Burkhalter

Martin Brunner

Tazio Fornera

Martine Poffet

Daniel Gantenbein

Daniel Edward Gerard

Joachim Schölkopf

Simon Urwyler

Catherine Jean Ridgway

Joachim Glaubitz

Martina Elisabeth Knupfer

Jacques Mongoin

Michael Tinkl

Beat Karth

Michael Knerr

Armelle Senti-Wenk

Francesco Pullega

Gil Morieras

Roman Marty

Olivier Guerret

Joachim Schoelkopf

Christian Jacquemet

Denis Ruhlmann

Jörg Sötemann

Tanja Budde

Claudia Pudack

Detlef Gysau

Jamal Ftouni

Vesa Kukkamo

Daniel Frey

Christoph Hirsiger

Kai Max Hettmann

Tobias Keller

Jarrod Massam

Christopher Pichler

Marc Feller

Patrick Gane

Julie Bridy

Djillali Foual

Matthias Burl

Joe McJunkins

Monroe Moore

Cécile Ganneau

Christophe Laporte

Matthias Buru

Patrick AC Gane

Patrick Arthur Charles Gane

Joe Mcjunkins

Julie Meuwly

Julie M Meuwly

Patrick Ac Gane

Patrick A Gane

Patrick Arthur Gane

Cecile Ganneau

Joerg Soetemann

Erik Laursen

Rene Burkhalter

Joris Baranger

A porous filler for reducing the gas permeability of an elastomer composition, a process for producing the elastomer composition comprising the porous filler, and the elastomer composition itself. The porous filler is selected from surface-reacted calcium carbonate, precipitated hydromagnesite and mixtures thereof. The addition of the porous filler to the elastomer composition allows for reducing the gas permeability of the elastomer composition while retaining or improving the mechanical properties of the elastomer composition.

Use of a porous filler for reducing the gas permeability of an elastomer composition

The present invention relates to a process for preparing a surface treated calcium carbonate-comprising material, a surface treated calcium carbonate-comprising material obtained by the process, an article comprising the surface treated calcium carbonate-comprising material, a polymer composition and the use of the surface treated calcium carbonate-comprising material in polymer applications.

Process for preparing a surface treated calcium carbonate material

A drilling fluid comprising an alkaline earth metal mineral carrier, a process for producing a drilling fluid and the use of a loaded mineral carrier for the delivery of a surfactant to a drilling fluid.

Alkaline earth metal minerals as carriers for surfactants in drilling fluids

The present invention relates to a process for preparing an aqueous suspension comprising a ground calcium carbonate-comprising material, the use of a homopolymer or a copolymer in such a process for preparing an aqueous suspension comprising a ground calcium carbonate-comprising material, an aqueous suspension comprising a ground calcium carbonate-comprising material obtained by the process, and the use of an aqueous suspension comprising a ground calcium carbonate-comprising material in paper applications such as paper filling and paper coating applications, in coating applications, in paints, in adhesives, in sealants, in concrete, in agriculture applications, in food applications, in cosmetic applications, or in pharmaceutical applications.

Process for preparing an aqueous suspension comprising a ground calcium carbonate-comprising material

The present invention relates to a process for preparing a surface treated calcium carbonate-comprising material, a surface treated calcium carbonate-comprising material obtained by the process, an article comprising the surface treated calcium carbonate-comprising material, a polymer composition and the use of the surface treated calcium carbonate-comprising material in a polymer composition.

Process for preparing a surface-treated calcium carbonate material

The present invention relates to the technical domain of additives for aqueous high solids suspensions of mineral materials. The inventive additive comprises specific primary amines and is used for increasing the pH-value of the suspension and/or for increasing the wettability of the mineral materials.

Use of additives containing primary alkanolamines in aqueous mineral suspensions

The present invention relates to a method for transesterification of carboxylic acid esters by heterogeneous catalysis using a catalyst that is obtainable by calcination of surface-reacted calcium carbonate. The invention further relates to the use of said method in the production of fuel or fuel components, such as biodiesel. Further aspects of the present invention relate to the transesterified ester obtainable by the inventive method and to its use as fuel or as fuel component. Still another aspect of the present invention relates to a corresponding transesterification catalyst and to its use in transesterification reactions.

Method for transesterification of carboxylic acid esters

The present invention relates to a method for the treatment of a surface-reacted calcium carbonate, wherein the treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts, iron (II)-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof, a treated surface-reacted calcium carbonate as well as a use of the treated surface-reacted calcium carbonate as oxygen scavenger.

Treatment of surface-reacted calcium carbonate

A surface-reacted calcium carbonate is described. In embodiments, the surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one HOion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate.

Surface-reacted calcium carbonate with functional cations

The present invention refers to the use of at least one mono-substituted succinic anhydride before or during extrusion of a polymer composition comprising polylactic acid as polymer component and at least one calcium carbonate-comprising material as filler, to reduce the polymer decomposition during processing and/or to decrease the melt flow rate of such an extruded polymer as well as a method for reducing the polymer decomposition during processing and decreasing the melt flow rate of a polymer composition comprising polylactic acid as polymer component and at least one calcium carbonate-comprising material as filler, the use of a polymer composition obtainable by a process comprising the steps of a) providing at least one polylactic acid as polymer component, b) providing at least one calcium carbonate-comprising material as filler, c) providing at least one mono-substituted succinic anhydride and d) contacting the components of a), b) and c) in any order and e) extruding the contacted components of step d) as well as an article comprising a polymer composition obtainable by the aforementioned process.

Use of mono-substituted succinic anhydride

The present invention relates to a process for preparing a surface treated filler material product with succinic anhydride(s), a surface treated filler material product, a polymer composition, a fiber and/or filament and/or film and/or thread comprising the surface treated filler material product and/or the polymer composition, an article comprising the surface treated filler material product and/or the polymer composition and/or the fiber and/or filament and/or film and/or thread as well as the use of a mono-substituted succinic anhydride for decreasing the hydrophilicity of a calcium carbonate-containing filler material surface and the use of a surface-treated filler material product for initiating the crosslinking reaction in epoxide resins.

Process of controlled chemical reaction of a solid filler material surface and additives to produce a surface treated filler material product

The use of at least one mono-substituted succinic anhydride is described before or during compounding of a polymer composition including at least one polymer as polymer component and at least one calcium carbonate-based material as filler. The use of the at least one mono-substituted succinic anhydride can reduce the polymer decomposition during processing and/or can decrease the melt flow rate of such a compounded polymer composition by at least 10%. The use can also increase the viscosity of such a compounded polymer composition by at least 10%, in comparison to the same polymer composition that has been treated the same way in the absence of any mono-substituted succinic anhydride, wherein the polymer composition does not include polylactic acid.

The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.

Drying process

The present invention refers to a process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its uses. The process is carried out in a reactor system that comprises a tank () equipped with a stirrer () and at least one filtering device ().

Process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its use

The present invention refers to a process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its uses.

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Aarburg, Switzerland

Samuel Rentsch