Omya International Ag

Coatex S.a.s.

Xueping Qiu

Patrick A C Gane

Jacques Mongoin

Christian Jacquemet

George Saunders

Olav Bergset

Dan Varney

Patrick Arthur Charles Gane

Patrick Arthur Gane

A mineral composition comprising mineral particles, said mineral particles, when in a densely compacted bed form, having a volume defined median pore diameter from 0.01 to 0.04 micrometre, and having an intruded total specific void volume of 0.1-0.3 cm/g. A specific advantage of this composition is that it as a component in a coating, allows the passage of ink solvent into the base paper while retaining the ink molecules on the surface.

Mineral composition, especially for use in paper fillers and paper or plastic coatings

A mineral composition comprising mineral particles, said mineral particles, when in a densely compacted bed form, having a volume defined median pore diameter from 0.01 to 0.04 micrometer, and having an intruded total specific void volume of 0.1-0.3 cm/g. A specific advantage of this composition is that it as a component in a coating, allows the passage of ink solvent into the base paper while retaining the ink molecules on the surface.

The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or ally monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties. The invention also concerns the said aqueous suspensions and their uses in the fields of paper and paint.

Grinding aid of mineral materials in aqueous suspension, resulting aqueous suspensions and uses thereof

The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or allyl monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties. The invention also concerns the said aqueous suspensions and their uses in the fields of paper and paint.

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Rutland, VT, United States of America

Xueping Qiu