The present invention relates to a process for preparing an antimicrobial particulate composition. The invention also relates to personal care or hygiene composition comprising an antimicrobial particulate composition obtainable by the process in accordance with this invention. The invention more particularly relates to a process for preparing an antimicrobial metal nanoparticles immobilized in an inorganic porous material and also incorporating these particles in personal care or hygiene compositions. The antimicrobial particulate composition comprises 0.05% to 3% by weight of antimicrobial metal particles and 97 to 99.95% by weight of immobilizer comprising an inorganic porous material selected from zinc oxide, magnesium hydroxide or calcium carbonate.

An optically clear, solid water-soluble formulation of odorants and flavorings comprising at least one synthetically prepared odorant and flavoring, in which the odorants and flavorings are embedded homogeneously in a polymer matrix based on polyvinyllactams.

Zinc oxide-containing composite particles of the present invention each include: a dense matrix formed of silica and a polysilsesquioxane; and zinc oxide particles dispersed within the matrix. The content of the polysilsesquioxane in the matrix is 30 mass % to 70 mass %. The zinc oxide-containing composite particles of the present invention have high acid resistance and are capable of maintaining acid resistance even upon contact with water.

The present invention relates to a composite powder of scoria powder and a porous polymer. More particularly, the present invention relates to a composite powder (scoria sphere) in which the surface and the inside of a porous polymer are uniformly impregnated with scoria powder particles prepared by spraying in one-step a dispersion in which scoria powder is dispersed in a solution in which a polymer is dissolved; a cosmetic composition containing the same; and a process for producing the same. When the scoria impregnated powder, of the present invention, in which the porous polymer is uniformly impregnated with the scoria powder particles, is formulated as a cosmetic composition, the porous polymer supplements the sebum absorption performance of the scoria miniaturized in a micro size, and thus the sebum absorption power is greatly improved.

The titanium dioxide fine particle-dispersed composite particles (1) of the present invention include silica particles (10) and fine titanium dioxide particles (20). The fine titanium dioxide particles (20) are dispersed inside the silica particles (10). The fine titanium dioxide particles (20) are of the rutile type and have an average primary particle diameter of 2 nm to 8 nm. The titanium dioxide fine particle-dispersed composite particles (1) of the present invention have high transparency to visible light.

Zinc oxide compositions as well as techniques for plasmonic enhancement of absorption in sunscreen applications are provided herein. A method includes selecting one or more metal particles to be used in conjunction with one or more zinc oxide particles in a sunscreen composition, wherein said selecting is based on the plasmon resonance frequency associated with each of the metal particles; and embedding the one or more selected metal particles into each of the one or more zinc oxide particles.

An optically clear, solid water-soluble formulation of odorants and flavorings comprising at least one synthetically prepared odorant and flavoring, in which the odorants and flavorings are embedded homogeneously in a polymer matrix based on polyvinyllactams.

Zinc oxide compositions as well as techniques for plasmonic enhancement of absorption in sunscreen applications are provided herein. A method includes selecting one or more metal particles to be used in conjunction with one or more zinc oxide particles in a sunscreen composition, wherein said selecting is based on the plasmon resonance frequency associated with each of the metal particles; and embedding the one or more selected metal particles into each of the one or more zinc oxide particles.

The present disclosure relates to an eye colorant for coloring a portion of a cornea of an eye of a patient; the eye colorant comprises composite material particles with coloring pigments of at least one color and, a matrix material, which at least partially embeds the coloring pigments, thereby forming the composite material particles and to a method for manufacturing a patient individual eye colorant for coloring a portion of a cornea of an eye of a patient.

Zinc oxide compositions and methods for embedding oxide particles in a separate suspension particle for sunscreen applications are provided herein. A method includes reducing the size of each of multiple zinc oxide particles in accordance with a predetermined range; selecting one or more suspension particles to be utilized in conjunction with the multiple zinc oxide particles in a sunscreen composition, wherein each of the one or more suspension particles is larger in size than each of the multiple zinc oxide particles, and wherein said selecting is based on the refractive index of each of the one or more suspension particles; and embedding the multiple zinc oxide particles into the one or more suspension particles to create the sunscreen composition.