摘要:
The present invention concerns synthetic mica powder containing from 75 to 99% of the stoichiometrical composition of fluorine and/or having a shape in which the end face of particle is laminated, process for producing such synthetic mica powder, as well as cosmetics having synthetic mica powder blended therewith, in which the synthetic mica powder shows no leaching of fluorine ions and/or improved hold of oils due to lamination at the surface of powder. Accordingly, in this invention, cosmetics excellent in extensibility, gloss, adherence and modability, having appearance of high chroma and of high stability and safety can be obtained.
摘要:
The present invention is a method for producing swellable or nonswellable fluorine mica at a relatively lower temperature by heating a powdery mixture comprising 10 to 35% by weight of an alkali silicofluoride as the main component optionally together with an alkali fluoride and the balance of talc. This fluorine mica is used for pigments, etc.
摘要:
The present invention concerns synthetic mica powder containing from 75 to 99% of the stoichiometrical composition of fluorine and/or having a shape in which the end face of particle is laminated, process for producing such synthetic mica powder, as well as cosmetics having synthetic mica powder blended therewith, in which the synthetic mica powder shows no leaching of fluorine ions and/or improved hold of oils due to lamination at the surface of powder. Accordingly, in this invention, cosmetics excellent in extensibility, gloss, adherence and modability, having appearance of high chroma and of high stability and safety can be obtained.
摘要:
The present invention is related to the production of crystal-containing gels and papers, films, fibers, boards, and coatings made therefrom. The process for making the gels comprises three general steps: first, a fully or predominantly crystalline body is formed containing crystals consisting essentially of a lithium and/or sodium water-swelling mica selected from the group of fluorhectorite, hydroxyl hectorite, boron fluorphlogopite, hydroxyl boron phlogopite, and solid solutions among those and between those and other structurally-compatible species selected from the group of talc, fluortalc, polylithionite, fluorpolylithionite, phlogopite and fluorphlogopite; second, that body is contacted with a polar liquid, desirably water, to cause swelling and disintegration of the body accompanied with the formation of a gel; and, third, the solid:liquid ratio of the gel is adjusted to a desired value depending upon the application therefor. Where papers, films, fibers, boards, or coatings are desired, such are prepared from the gel, and, to impart good chemical durability thereto, are thereafter contacted with a source of large cations to effect an ion exchange reaction between the large cations and the Li.sup.+ and/or Na.sup.+ ions from the interlayer of the crystals, and the products then dried. Glass-ceramic bodies are the preferred starting materials.
摘要:
This invention relates to a sol of ultra-fine particles of layered structure material selected from a group of montmorillonite, hectorite, tetra-silicic mica and taeniolite, characterized in that said layered structure material is hydrophobed by treatment with organic material selected from a group of titanic acid ester; zirconic acid ester; silanes having one of methoxy-, ethoxy- and silanol-radicals and one of vinyl-, epoxy-, acryl- and amino-radicals; .beta.-diketones mixed with lauryl amine; titanium amide; zirconium amide; and cationized silicone oil.
摘要:
This invention relates to a process for producing a tetra-silicic mica having the formula Na.sub.0.6 - 0.8 Mg.sub.2.6 - 2.7 (Si.sub.4 O.sub.10)F.sub.2 which comprises mixing components selected from the group of sodium fluoride (NaF, sodium silicofluoride (Na.sub.2 SiF.sub.6), magnesium fluoride (MgF.sub.2), magnesia (MgO) and silica (SiO.sub.2) in a mole ratio of (a) 1 - 1.2 NaF : 0.5 - 1.2 MgF.sub.2 : 2 MgO : 4 SiO.sub.2 or (b) 0.5 - 0.8 Na.sub.2 SiF.sub.6 : 0.5 - 1.2 MgF.sub.2 : 2 MgO : 4 SiO.sub.2, melting the mixture at a temperature of 1300.degree. C to 1500.degree. C and cooling the melt to obtain a crystal.This invention further relates to a water sol of flake-like ultra-fine particles of tetra-silicic mica produced in accordance with claim 1, wherein most of the flake-like particles dispersed in water have a thickness of less than 50 A and an average diameter of the flat plane of between 500 A and 3000 A.
摘要:
This invention relates to a process of producing taeniolite having the formula, LiMg.sub.2 Li(X.sub.4 O.sub.10)F.sub.2 (wherein X represents Si or Ge), which comprises mixing (a) lithium compound selected from the group of lithium oxide and lithium fluoride, (b) magnesium compound selected from the group of magnesium fluoride and magnesium oxide and (c) silicon oxide (or germanium oxide) in such a manner that the mixing ratio of Li : Mg : Si : (or Ge) : F becomes 1 : 1 : 2 : 1 (the fluoride is included in an excess amount of 10 - 30% to compensate the loss of fluorine during the process); melting the mixture at about 1,250.degree. C-1,450.degree. C and slowly cooling until the melt crystallizes.This invention further relates to a water sol of flake-like ultra-fine particles of taeniolite produced in accordance with the above mentioned process, wherein each flake-like particle dispersed in water has a thickness of less than 150 A and a ratio of a diameter of the flat plane of the flake/the thickness of the flake being more than 100/1.
摘要:
A ground phyllosilicate mineral may include particulate talc having a d50 in the range of from 0.5 to 10 μm and a shape factor of from 10 to 100. A method for grinding a particulate inorganic material may include providing an aqueous suspension including a particulate phyllosilicate mineral having a shape factor less than 60. The method may further include grinding the aqueous suspension to form a ground product, wherein the particulate phyllosilicate mineral is present in the aqueous suspension in an amount greater than 55% by weight, and wherein the phyllosilicate mineral is talc. The ground phyllosilicate mineral may be used as a coating pigment or as a filler, or as part of a coating or a filler composition in the preparation of paper, card, board, cardboard, writing paper, printing paper, polymers, rubbers, plastics, plastic films, paints, sealants, mastics, or ceramics.
摘要:
A composite synthetic mica powder having an excellent ultraviolet ray screening effect, the composite synthetic mica powder comprising a fine particle layer (B) containing one or more types of elements selected from the group of Te, Bi, Pb, Ce, Fe, Mo, Nb, W, Sb, Sn, V, Mn, Ni, Co, Zn and Ti is formed on the surface of scale-like mica particles (A). The covering ratio of particles (A) by particles (B) is in the range of 0.5 to 1; the ratio of particle size of the particles (B) to plane direction diameter of the particles (A) is 0.1 or less; and particle size of the particles (A) is 1 to 100 .mu.m. Also, a red synthetic mica which develops light-resistant red color closer to the color of human skin and ultraviolet rays, a method for manufacturing the same, and an ultraviolet ray screening agent which contains the synthetic mica. The synthetic mica is expressed by the following formula (I):X.sub.1/3.about.1 Y.sub.2.about.3 (Z.sub.4 O.sub.10)F.sub.2.times.0.75.about.2.times.0.99 (I)where X represents one or more ions selected from the group of Na, K, Li, Ca, Rb and Sr; Y represents one or more ions selected from the group of Mg, Fe, Ni, Mn, Al, Li, Co, Ti and Zn; Z represents one or more ions selected from the group of Al, Si, Ge, Fe, B, Co and Ti; and at least one of Y and Z represents an iron ion; and the molar number of iron contained in the synthetic mica is 0.01 to 3 mols.