The present invention relates to a particulate filler which has a coating on support particles in each case surrounding the latter, which comprises a titanium dioxide doped with niobium and at least one further element, to a process for the preparation of a particulate filler of this type and to the use thereof, in particular as varistor filler having nonlinear electrical properties in coating compositions and moulding compounds.

The present invention relates to a particulate filler which has a coating on support particles in each case surrounding the latter, which comprises a titanium dioxide doped with niobium and at least one further element, to a process for the preparation of a particulate filler of this type and to the use thereof, in particular as varistor filler having nonlinear electrical properties in coating compositions and moulding compounds.

A polypropylene composition comprising the following components in parts by weight: 40-99 parts of a polypropylene resin; 15-30 parts of an ethylene-α olefin copolymer; 0.2-1 part of an antimicrobial agent; and 1-3 parts of a polypropylene grafted polydimethylsiloxane is provided. By controlling a melt index of an elastomer, distribution of the modified polydimethylsiloxane and antimicrobial agent can be improved, thus improving antimicrobial and stain-resistant effects of the polypropylene composition.

A polypropylene composition comprising the following components in parts by weight: 40-99 parts of a polypropylene resin; 15-30 parts of an ethylene-α olefin copolymer; 0.2-1 part of an antimicrobial agent; and 1-3 parts of a polypropylene grafted polydimethylsiloxane is provided. By controlling a melt index of an elastomer, distribution of the modified polydimethylsiloxane and antimicrobial agent can be improved, thus improving antimicrobial and stain-resistant effects of the polypropylene composition.

A composition contains quantum dots (A) and a resin (B), wherein the resin (B) contains a polymer (B1) having a sulfide group, a carboxyl group, and an unsaturated double bond.

A composition contains quantum dots (A) and a resin (B), wherein the resin (B) contains a polymer (B1) having a sulfide group, a carboxyl group, and an unsaturated double bond.

A composition formed from a calcium or magnesium carbonate-including material and a surface-treatment composition including at least one cross-linkable compound, a dry process for the preparation of such a composition, a curable elastomer mixture comprising an elastomer resin and the composition, a cured elastomer product formed from the curable elastomer mixture, a process for preparing the cured elastomer product, the use of at least one cross-linkable compound including at least two functional groups, wherein at least one functional group is suitable for cross-linking an elastomer resin and wherein at least one functional group is suitable for reacting with the calcium or magnesium carbonate-including material in the compounding of an elastomer formed from an elastomer resin and at least one calcium or magnesium carbonate-comprising material as filler as well as an article formed from the cured elastomer product.

A composition formed from a calcium or magnesium carbonate-including material and a surface-treatment composition including at least one cross-linkable compound, a dry process for the preparation of such a composition, a curable elastomer mixture comprising an elastomer resin and the composition, a cured elastomer product formed from the curable elastomer mixture, a process for preparing the cured elastomer product, the use of at least one cross-linkable compound including at least two functional groups, wherein at least one functional group is suitable for cross-linking an elastomer resin and wherein at least one functional group is suitable for reacting with the calcium or magnesium carbonate-including material in the compounding of an elastomer formed from an elastomer resin and at least one calcium or magnesium carbonate-comprising material as filler as well as an article formed from the cured elastomer product.

A curable fluoropolymer composition includes a crosslinkable fluorine-containing polymer, and a filler selected from surface-reacted calcium carbonate, ultrafine calcium carbonate, or a mixture thereof, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and one or more H.sub.3O.sup.+ ion donors, wherein the carbon dioxide is formed in situ by the H.sub.3O.sup.+ ion donors treatment and/or is supplied from an external source. Furthermore, the disclosure relates to a cured fluoropolymer product formed from said composition, an article including the cured fluoropolymer product, a method of producing a cured fluoropolymer product, and use of said filler for reinforcing a cured fluoropolymer product.

A curable fluoropolymer composition includes a crosslinkable fluorine-containing polymer, and a filler selected from surface-reacted calcium carbonate, ultrafine calcium carbonate, or a mixture thereof, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and one or more H.sub.3O.sup.+ ion donors, wherein the carbon dioxide is formed in situ by the H.sub.3O.sup.+ ion donors treatment and/or is supplied from an external source. Furthermore, the disclosure relates to a cured fluoropolymer product formed from said composition, an article including the cured fluoropolymer product, a method of producing a cured fluoropolymer product, and use of said filler for reinforcing a cured fluoropolymer product.