The invention discloses an ink for the engraved steel die printing process, having a viscosity at 40 C. between 3 Pa.Math.s to 15 Pa.Math.s, preferably 5 to 10 Pa.Math.s, and having a polymeric organic binder and magnetic pigment particle, characterized in that said magnetic pigment particles comprises a magnetic core material which is surrounded by at least one layer of another material. The surrounding layers, single or in combination, confer the pigment particle particular optical properties in the visible and/or in the near IR, chosen from high specular or diffuse reflectance, spectrally selective absorption or reflection, and angle-dependent absorption or reflection, and allow for the formulation of inks having a large gamut of color and other optical functionalities.

The present invention relates to methods for producing surface-modified calcium oxide particles having the production steps according to claim 1, novel calcium oxide particles obtained according to these methods, and uses thereof.

Disclosed are a silica sol composition including silica, an anionic dispersant, two or more epoxy silane coupling agents, and an organic solvent, and a method for preparing the same. In the silica sol composition, a uniform surface modification of silica particles may be achieved by using an anionic dispersant and two or more epoxy silane coupling agents, and it is possible to effectively enhance the compatibility between a silica filler whose surface is modified with an epoxy group and a resin which is an underfill composition.

The invention relates to an anti-friction coating (11, 12, 41, 42, 43) and an anti-friction coating composite (10) comprising at least 25 vol. % of a binder (16) and comprising fillers, which include zinc sulfide (18) and barium sulfate (20) and optionally additional fillers, wherein the volume ratio of barium sulfate (20) to zinc sulfide (18) is between 0.1 and 15.7, preferably between 0.8 and 4.88, and particularly preferably between 1.5 and 3.44. The anti-friction coating composite (10,40) comprises at least two anti-friction coatings (11, 13) of different compositions. The invention further relates to sliding bearing layered composite materials comprising such coatings and use thereof in internal combustion engines.

Nanoparticles zwitterionic polymers grafted thereto or grafted therefrom, and methods for making and using the nanoparticles. Zwitterionic nanogels, and methods for making and using the nanogels.

A visible-light-responsive photocatalyst powder includes a tungsten oxide powder. When the tungsten oxide powder is measured by X-ray diffractometry, (1) among intensity ratios of a peak A (2=22.8 to 23.4), a peak B (2=23.4 to 23.8), a peak C (2=24.0 to 24.25), and a peak D (2=24.25 to 24.5), an A/D ratio and a B/D ratio each fall within a range of 0.5 to 2.0, and a C/D ratio falls within a range of 0.04 to 2.5, (2) an intensity ratio (E/F) of a peak E (2=33.85 to 34.05) to a peak F (2=34.05 to 34.25) falls within a range of 0.1 to 2.0, and (3) an intensity ratio (G/H) of a peak G (2=49.1 to 49.7) to a peak H (2=49.7 to 50.3) falls within a range of 0.04 to 2.0, and the tungsten oxide powder has a BET specific surface area in a range of 1.5 to 820 m.sup.2/g.

Methods, systems, and devices are disclosed for fabricating and implementing optically absorbing coatings. In one aspect, an optically selective coating includes a substrate formed of a solar energy absorbing material, and a nanostructure material formed over the substrate as a coating capable of absorbing solar energy in a selected spectrum and reflecting the solar energy in another selected spectrum. A concentrating solar power (CSP) system includes heat transfer fluids (HTFs); thermal energy storage system (TES); and solar receivers in communication with HTFs and including a light absorbing coating layer based on cobalt oxide nanoparticles.

A refractive coating such as a white layer is disposed on a housing component of a portable electronic device. The refractive coating includes pigment particles such as titanium dioxide suspended in a carrier medium such as a polymer matrix. The pigment particles each define air pores or other voids formed by at least partially sintering the pigment particles. A difference in refractive index between the air pores and the pigment particles is greater than that between the carrier medium and the pigment particles. Incident light is refracted at interfaces between the pigment particles and the air pores, increasing light refracted by the refractive coating compared to refractive coatings including pigment particles lacking the air pores.

A coating for application to a natural-coloured substrate is provided that allows for increased colour vibrancy of dye applied to the coated substrate. The coating comprises silica particles and at least one binder solid, and in addition, may comprise siloxane. The coating may comprise a mono or a poly aqueous sol dispersion of silica particles optionally having particle sizes from about 1 to about 150 nm.

Barrier compositions comprising high shape factor surface treated kaolins are described.