Provided is polyimide varnish comprising: polyamic acid containing dianhydride monomer and diamine monomer as polymerized units; and nanosilica, wherein the nanosilica has an absolute value of zeta potential of 10.0 mV to 40.0 mV.

Provided is polyimide varnish comprising: a polyamic acid solution containing diamine monomer and dianhydride monomer as polymerized units; a first additive containing boron nitride; a second additive containing nanosilica; and a dispersant.

The present invention provides an antimold emulsion coating material and an antimold fine particle dispersion which exhibit excellent antimold effects over an extended period even when exposed to a wet heat environment. The antimold emulsion coating material contains composite tungsten oxide fine particles whose surfaces are coated with a coating film containing at least one selected from hydrolysis products of metal chelate compounds, polymers of hydrolysis products of metal chelate compounds, hydrolysis products of metal cyclic oligomer compounds, and polymers of hydrolysis products of metal cyclic oligomer compounds (surface-treated composite tungsten oxide fine particles), and a resin emulsion. Since the surface-treated composite tungsten oxide fine particles maintain excellent photo-thermal conversion characteristics even when exposed to a wet heat environment, the antimold emulsion coating material containing the surface-treated composite tungsten oxide fine particles and the resin emulsion has the effect of exhibiting excellent antimold effects over an extended period.

The present disclosure relates to an insulating coating, which comprises the following components: a water-soluble metal inorganic salt A containing a water-soluble phosphate A1, which comprises a water-soluble phosphate of at least one of aluminum, zinc, magnesium and manganese; a water dispersible organic emulsion B, which comprises at least one of an epoxy emulsion and a curing agent thereof, polyester, polyurethane, polyacrylate and an ethylene-vinyl acetate copolymer; an additive C, which comprises at least one of a structure reinforcing additive C1 and a heat-resistance reinforcing additive C2, wherein the structure reinforcing additive C1 comprises an inorganic nanoparticulate matter, and the heat-resistance reinforcing additive C2 is selected from at least one of boric acid and a water-soluble salt of molybdenum, tungsten, vanadium or titanium; an auxiliary agent D1 and a solvent D2, wherein the solid content ratio of the water-soluble metal inorganic salt A to the water dispersible organic emulsion B is (35-85):(15-65) in part by mass. In addition, the present disclosure further relates to a silicon steel plate, and the surface of the substrate thereof is provided with a coating layer formed by the insulating coating of the present disclosure.

Articles including durable and icephobic and/or biocidal polymeric coatings are disclosed. The polymeric coatings can include a bonding layer which may contain a substantially fully cured polymeric resin providing excellent adhesion to metallic or polymer substrates. The polymeric coating further includes an outer surface layer which is smooth, hydrophobic, biocidal and icephobic and, in addition to a substantially fully cured resin, contains silicone comprising additives near the exposed outer surface. The anisotropic polymeric coatings are particularly suited for strong and lightweight parts required in aerospace, automotive and sporting goods applications. A process for making the articles is disclosed as well.

The present invention is directed to compositions comprising carbon black and expanded graphite as well as shaped articles and coatings for substrates comprising the compositions. The present invention also relates to the use thereof and methods for reducing electrical resistivity and providing electromagnetic interference shielding as well as thermal conductivity. The compositions of the invention allow for high electrical conductivity, EMI shielding performance as well as thermal conductivity without compromising rheological properties like fluidity or viscosity, for example measured as the melt flow rate, or mechanical properties such as, impact resistance, tensile strength or elongation at break.

A method of making a silver-silicalite coating on a surface of a stainless-steel substrate is provided. The method includes mixing metakaolin with an aqueous solution of NaOH to form a first mixture. The method further includes mixing silica gel and silver nitrate with the first mixture to form a second mixture. Furthermore, the method includes mixing Zeolites Socony Mobil-5 (ZSM-5) with the second mixture to form a third mixture. The method further includes hydrothermally treating the stainless-steel substrate with the third mixture to form the silver-silicalite coating on the surface of the stainless-steel substrate. The hydrothermal treatment is carried out in the absence of an organic template. The stainless-steel substrate coated with the silver-silicalite coating, prepared by the method of the present disclosure, has lower corrosion in comparison to the same stainless-steel substrate without the silver-silicalite coating.

Provided is a composition including colloidal silica particles; and a solvent, in which a viscosity at 25 C. is 4 mPa.Math.s or lower. The colloidal silica particles are a composition in which a plurality of spherical silica particles are linked in a beaded shape or a composition in which a plurality of spherical silica particles are linked in a planar shape. The solvent includes a solvent A1 having a boiling point of 190 C. to 280 C. Provided is also a film forming method using the above-described composition.

Provided are a resin composition comprising a semiconductor particle (A) and a resin (B), wherein a content of a polymerizable compound (C) and a content of a polymerization initiator (D) are each 0.01% by mass or less based on a total amount of a solid content of the resin composition, and a ratio of the content of the semiconductor particle (A) to that of the resin (B) is 0.90 or less in terms of mass ratio; a resin film formed from the resin composition; and a display device comprising the resin film.

A silicone resin includes a hollow silica structure and a silsesquioxane structure bonded to the hollow silica structure. A hydroxy group is included in an amount of 1.0 wt % or less relative to the total weight of the silicone resin, thereby being able to realize a low refractive index and an excellent coating property. A coating composition contains the silicone resin, and high solution stability is achieved even without a separate dispersion process. A product is cured from the coating composition.