Provided are a ferrite powder that inhibits magnetic loss at frequencies lower than 100 MHZ, and when applied to a composite material or a composite body, is capable of preventing particles from coming off without loss of moldability and filling properties, a ferrite resin composite material, and electromagnetic shielding material, electronic material, or electronic component. This ferrite powder is a MnZn ferrite powder containing at least spherical or polyhedral ferrite particles having a spinel phase as a main phase. The ferrite particles also have, at respective surfaces thereof, a step structure having a convex polygonal contour. Furthermore, the BET specific surface area of the ferrite powder is 0.35-10.00 m.sup.2/g, and the contained amount of the zinc oxide (ZnO) phase thereof is 0-0.8 mass %.

This invention relates to a method for producing 3D printing material. The method involves first producing, from at least one photocatalyst and at least one phyllosilicate, a photocatalyst-phyllosilicate composite; From the photocatalyst-phyllosilicate composite and at least one thermoplastic polymer, a photocatalyst-phyllosilicate-polymer composite is then produced. Finally, the photocatalyst-phyllosilicate-polymer composite is subjected to a shaping process, producing a 3D printing material. This invention also relates to a 3D printing material comprising a thermoplastic matrix and, embedded in the matrix, a composite material containing at least one photocatalyst and at least one phyllosilicate. This invention further relates to a method for producing components from the 3D printing material and a component produced using this method.

This invention relates to anti-microbial active particles, compositions and uses thereof for inhibiting bacterial growth on surfaces or devices. This invention further discloses methods of making such anti-microbial active particles.

This invention relates to compositions and medical devices comprising anti-microbial active particles, for inhibiting microbial growth. This invention further provides methods of making such compositions and medical devices.

A powder coating material includes powder particles and an external additive including inorganic particles having an average primary particle diameter of 1000 nm or less. The ratio of the carbon content (mass %) in the inorganic particles to the average primary particle diameter (nm) of the inorganic particles is 0.1 or more. The powder coating material includes a black colorant or a white colorant or does not include any colorant.

The present invention relates to a composition for 3D printing, a 3D printing method using the same, and a three-dimensional comprising the same, and provides a composition for 3D printing capable of realizing a three-dimensional shape having precision and excellent curing stability.

An ethylene-vinyl alcohol copolymer composition can be formed into a product having very few minute fisheyes. The ethylene-vinyl alcohol copolymer composition comprises: an ethylene-vinyl alcohol copolymer; and an iron compound; wherein the ethylene-vinyl alcohol copolymer is a saponification product of an ethylene-vinyl ester copolymer prepared by using an organic compound having a half-life of 10 to 300 minutes at 60 C. as a polymerization initiator; wherein an amount of the iron compound is 0.001 to 2 ppm in terms of a metal by weight of the ethylene-vinyl alcohol copolymer composition.

The present disclosure is directed to a curable precursor of a pressure-sensitive adhesive comprising: a) a (co)polymeric material comprising the reaction product of a (co)polymerizable material comprising a (meth)acrylate ester monomer; and optionally, a co-monomer having an ethylenically unsaturated group; b) a polyfunctional aziridine curing agent; c) a thermal acid generating agent; and d) magnetic particles. The present disclosure is also directed to a method of applying such pressure-sensitive adhesives to a substrate and uses thereof.

A method of manufacturing a polymer coated single ferromagnetic particle is provided. The method includes hydrophobizing one single hydrophilic ferromagnetic particle by absorbing an aliphatic acid having a hydrophobic aliphatic group and a hydrophilic acid group onto the single ferromagnetic particle to obtain a single hydrophobic ferromagnetic particle; emulsifying the one single hydrophobic ferromagnetic particle with a monomer liquid comprising a nonionic surface activating agent which re-hydrophilizes the one single hydrophobic ferromagnetic particle, to obtain an emulsified liquid; adding a radical addition initiator to the emulsified liquid ; and emulsion polymerizing the monomer by radical addition polymerization.

The present invention provides a class of magnetic hydrogels with tissue-mimetic mechanical properties and photothermal welding/healing capability. In these hydrogels, a hybrid network involving aramid nanofibers, functionalized Fe.sub.3O.sub.4 nanoparticles, and polyvinyl alcohol (PVA) is accomplished by a stepwise assembly of the functional components. The engineered interactions between nanoscale constituents enable facile materials processing and confer a combination of excellent mechanical properties, magnetism, water content and porosity.