Provided is a kaolin having a finer particle size and a narrower particle size distribution, in combination with suitable morphology. Also provided are a method of preparing the kaolin product and methods of use.

The present invention refers to a process for the preparation of a surface-treated magnesium hydroxide-comprising material, a surface-treated magnesium hydroxide-comprising material as well as the use of the surface-treated magnesium hydroxide-comprising material in polymer composition, in paper making, paper coatings, agricultural applications, paints, adhesives, sealants, composite materials, wood composite materials, construction applications, pharma applications and/or cosmetic applications as well as surrounding materials, wherein the surface treatment agent of the surface-treated magnesium hydroxide-comprising material is undergoing a reaction with the surrounding material.

An acrylic acid polymer having a weight average molecular weight M.sub.w in the range from 3500 to 2000 g/mol and a polydispersity index M.sub.w/M.sub.n≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.

The method for producing a pigment-kneaded product includes a step [1] of supplying at least a pigment and a resin to a container provided in a kneading apparatus and a step [2] of kneading the resulting content (content (a1)) present in the container until a storage elastic modulus of content (a1) at an angular frequency of 1 rad/s, which is obtained by measurement of dynamic viscoelasticity at 25 C., reaches a range of 200 kPa to 30,000 kPa.

A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-comprising material in a mixture obtained by contacting the calcium carbonate-comprising material with at least one polydimethylsiloxane as grinding agent.

A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-comprising material in a mixture obtained by contacting the calcium carbonate-comprising material with at least one polydimethylsiloxane as grinding agent.

An ink mixture is manufactured by mixing carbon, graphite, and solvents in a mixing system which may include a Cowles disperser. The conductive portions (e.g. carbon, graphite) are evenly and universally dispersed, because an even dispersal means the conductivity of the resulting conductive strip (electrode) will be even, consistent, and reliable. The various embodiments of the ink mixture comprise a blend of different conductive pigments, including but not limited to carbon black and graphite. These embodiments must be grinded until below 6.5 Microns in particle size.

The present invention relates to a grinding aid as well as a grinding method. Further, the present invention pertains to a titanium dioxide particle with a layer comprising a grinding aid as described herein and the use of said titanium dioxide particle in various applications.

In order to provide a filler composition for fabricating a high-performance filler achieving good productivity while preventing worsening of a working environment and production of a VOC and to provide a filler and a method for producing the filler, a filler composition of the present invention contains wet silica, a polyoxyethylene unsaturated fatty acid ester, and a sulfur-containing silane coupling agent.

A method for manufacturing granulated silica. The method includes granulating silica powders each having a primary particle size of 5 to 50 nm by use of water, and hydrophobizing each surface of the silica powders with a silicon atom-containing hydrophobizing agent before or simultaneously with the granulation step.