Omya International Ag

Peter Haldemann

Matthias Buri

René Burkhalter

Michael Knerr

Emil Hersche

Ernst Ammann

Rene Burkhalter

The invention concerns a process for manufacturing a dry mineral pigment containing a product formed in situ by the multiple reaction between a calcium carbonate and the product or products of reaction of the said carbonate with one or more moderately strong to strong H3O+ ion donators and the product or products of reaction of the said carbonate with gaseous COformed in situ and/or originating from an external supply and one or more compounds of formula R&#x2014;X together with the mineral pigment obtained by the process, and its applications in the field of paint and/or plastics.

Dry mineral pigment containing calcium carbonate, aqueous suspension containing said pigment, and the uses thereof

The present invention relates to the field of processing thermoplastic polymers, particularly the present invention relates to a process for manufacturing compacted material suitable for the use in thermoplastic polymers without a compounding step, comprising the steps of a) providing at least one primary powder material; b) providing at least one molten surface treatment polymer; c) simultaneously or subsequently feeding the at least one primary powder material and the at least one molten surface treatment polymer into the high speed mixer unit of a cylindrical treatment chamber; d) mixing the at least one primary powder material and the at least one molten surface treatment polymer in the high speed mixer, e) transferring the mixed material obtained from step d) to a cooling unit, as well as the compacted material obtained by this process and its use in thermoplastic polymers.

Process for manufacturing a surface-treated compacted material processable on a single screw plastics conversion equipment

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Rothrist, Switzerland

Peter Haldemann