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.

A method for producing a packaging body of the present invention includes a production step of producing a metal oxide powder, and a sealing step of placing the metal oxide powder in a bag that is filled with at least one gas selected from the group consisting of a noble gas, nitrogen gas, oxygen gas, and dry air, followed by sealing the bag, the metal oxide powder being a silica powder or a magnesia powder, the bag having a moisture permeability as measured according to JIS Z 0222-1959 of 0.30 g/(m.sup.2.Math.day) or less.

Inorganic particulate compositions containing inorganic particles associated with a copolymer of a hydrophilic monomer and a hydrophobic monomer associated with the inorganic particles are provided. The particulate composition satisfies at least one of the following properties: a BET surface area of the inorganic particles is greater than 8 m.sup.2/g, a Hegman value of the inorganic particles is 75 microns or less, and
a rate of water loss from the composition upon drying from a moisture level greater than 2% wt % is at least 30% greater than a composition having a corresponding content of a polyacrylate polymer associated with the particles. A method to prepare the composition and formulations for inks, paints, coatings and filled polymeric articles containing the inorganic particulate composition are also provided.

A method of manufacturing colored chalk. The method for manufacturing colored chalk includes preparing a colorant, combining the colorant with a volume of water, adding magnesium carbonate to the combination of water and colorant until a paste is formed, mixing the paste until the paste is homogenous, heating the paste in a kiln until the water is removed, and grinding a mass of colored magnesium carbonate into a powder having a desired fineness. In some embodiments, the colorant includes iron oxide, charcoal, or camellia sinensis leaves.

A deaerated talc may include micronized, talc powder having a Hegman rating of 4.0 or greater. A deaerated talc may include micronized talc powder having enough cohesive strength for form agglomerations measuring 100 millimeters or less, 75 millimeters or less, or 50 millimeters or less. A deaerated talc product may include a micronized talc powder, and a bag containing the deaerated talc. The micronized talc powder may be deaerated via application of force to the micronized talc powder in at least two directions, including a first direction substantially parallel to the longitudinal direction of the bag and a second direction.

The present invention provides a functional material and a method for preparing the same, as well as a color filter material and a color filter substrate. The present invention belongs to the display technical field and can solve the problem that existing color filter films are environmentally unfriendly and have poor heat resistance and unsatisfactory colors. The functional material of the present invention includes an inorganic powder whose surface has a modified layer, wherein the inorganic powder includes any one or more of aluminum oxide, magnesium oxide, zinc oxide, zirconium oxide, silicon dioxide, titanium dioxide, boron oxide, diiron trioxide, calcium oxide, potassium oxide, sodium oxide and lithium oxide; and the modified layer is generated by a reaction of a dianhydride and a diamine. The color filter material of the present invention includes the above functional material and a quantum dot. The color filter substrate of the present invention includes a color filter film made of the above color filter material.

The invention relates to a material comprising at least 97% by weight alkaline earth metal carbonates having a calcium oxide content of 0.3% by weight or less and a particle size group of 0.1 to 1.8 mm. The invention furthermore relates to a method for the preparation thereof and also the use thereof for deacidification, filtration and/or hardening of liquids.

A talc agglomerate composition may include agglomerated talc particles and an agglomerization agent, and may have a conductivity of from about 1 to about 50 S/cm. A method for making a talc agglomerate composition may include agglomerating talc particles by combining a talc feed material including talc particles and an agglomerization agent to form a talc agglomerate composition. The talc agglomerate composition may have a d.sub.10 greater than a d.sub.10 of the talc feed material including talc particles. A talc composition may include talc particles having a conductivity greater than 8.1 S/cm and a viscosity in oil of less than 140 KU.

A method for producing forsterite microparticles having a primary particle size of 1, to 50 nm, as determined through electron microscopy. The method includes spray-drying, in an atmosphere of 50 C. or higher and lower than 300 C., a solution containing a water-soluble magnesium salt and colloidal silica at a mole ratio of magnesium atoms to silicon atoms (Mg/Si) of 2; and subsequently, firing the spray-dried product in air at 800 to 1,000 C.

A fine magnesium oxide particle dispersion liquid containing an aprotic solvent, and fine magnesium oxide particles that are dispersed in the aprotic solvent, wherein the dispersion liquid has D.sub.50 of 200 nm or less in a particle size distribution as measured by a dynamic light scattering method, and has a content rate of coarse particles having an average particle diameter of 500 nm or more of less than 1%, and a method for producing the fine magnesium oxide particle dispersion liquid.