A method of preventing or treating an oral disease by reducing adhesion of microorganisms, e.g. Candida albicans, to dental appliances fabricated and/or repaired by an autopolymerizing acrylic reinforcement resin comprising zirconium dioxide nanoparticles.

A method of repairing an acrylic denture base employing an autopolymerizable acrylic reinforcement resin comprising zirconium dioxide nanoparticles is disclosed. Additionally, a kit comprising precursors of the acrylic reinforcement resin, the acrylic reinforcement resin, and an acrylic denture base comprising the acrylic reinforcement resin are disclosed.

The present invention relates to the use of coating compositions, comprising shaped transition metal, especially silver, particles and a binder, wherein the ratio of pigment to binder is preferably such that the resulting coating shows an angle dependent color change, for the production of security elements and holograms. When the coating compositions of the present invention are used in coating a hologram the obtained products show a an angle dependent color change (flip/flop effect), different colors in reflection and transmission, an extremely bright OVD image and extremely strong rainbow effect, high purity and contrast.

The present invention relates to a film, in particular to a laser writable film, and to substances used therein, and components thereof. The present invention further relates to a method of manufacturing the film, uses thereof and products comprising the film.

An optical element includes a substrate and a light-shielding film on a part of the periphery of the substrate. The light-shielding film contains a compound having an epoxy group, a coloring agent, inorganic particles having a refractive index of 2.2 or more, and silica particles. The average concentration of the inorganic particles in an interface region having a thickness of 15 nm from the interface between the substrate and the light-shielding film is 1.1 to 1.5 times as high as the average concentration of the inorganic particles in the light-shielding film.

The present invention relates to a process for preparing a coatings composition with an open time additive comprising the steps of a) contacting an aqueous dispersion of alkali swellable polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L; and b) neutralizing the alkali swellable particles with a non-volatile base after or upon contact with the rheology modifier and the binder to form swelled multi-staged polymer particles; wherein the alkali swellable polymer particles comprise a shell having a T.sub.g of not greater than 25 C. and an acid functionalized core; and wherein the core-to-shell ratio is in the range of from 1:3.2 to 1:10. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.

In another aspect the present invention relates to the preparation of the coatings composition with an open time additive comprising the steps of a) contacting the open time additive with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L, then b) neutralizing the open time additive to form swelled multi-staged polymer particles, wherein the coatings composition with the open time additive exhibits less than a 50% increase in viscosity than the coating composition without the open time additive.

A coating liquid for forming a conductive layer according to an embodiment of the present invention contains fine metal particles, a dispersion medium, and a dispersant. The coating liquid has a pH of 4 or more and 8 or less, an electrical conductivity of 100 S/cm or more and 800 S/cm or less, and a content of the fine metal particles of 20% by mass or more and 80% by mass or less. A method for manufacturing a conductive layer according to another embodiment of the present invention is a method for manufacturing a conductive layer using a coating liquid for forming a conductive layer, the coating liquid containing fine metal particles, a dispersion medium, and a dispersant. The method includes an application step of applying the coating liquid for forming a conductive layer, and a heating step of heating the coating liquid for forming a conductive layer after application. At the time of the application, the coating liquid for forming a conductive layer has a pH of 4 or more and 8 or less, an electrical conductivity of 100 S/cm or more and 800 S/cm or less, and a content of the fine metal particles of 20% by mass or more and 80% by mass or less.

There is provided an optical apparatus which comprises a lens, and a lens barrel holding the lens, wherein a film is formed on a surface of the lens barrel, the film contains a resin, titanium oxide coated with silica, and an inorganic particle, an average particle size of the inorganic particle is 10 nm or more and 110 nm or less, and an average particle size of the titanium oxide coated with the silica is 0.2 m or more. Thus, it is possible to achieve the optical apparatus which, in an anoxic atmosphere, has less discoloration due to sunlight and less reflectance deterioration even when color is thin, and has the high solar reflectance.

A curable coating composition comprising: (a) a silicate, such as sodium silicate, potassium silicate or lithium silicate; (b) a phosphate, such calcium phosphate, magnesium phosphate or sodium phosphate; and (c) a metal oxide, such as magnesium oxide, aluminum (III) oxide, scandium (III) oxide, yttrium (III) oxide, or zirconium oxide. Such curable coating compositions may be used as non-thermochromic (tailored based on expected operating environment) thermal control coating compositions for application to spacecraft and components thereof. As an alternative metal oxide component, for use in lower temperature applications, or in applications for which thermochromism at elevated temperatures is not a concern, the metal oxide may comprise zinc oxide. Also provided is a curable coating composition comprising: (a) a silicate (e.g. as above); (b) a phosphate (e.g. as above); and (c) a metal sulphate, such as a barium sulphate. Cured coatings are also provided, as are thermal control coatings, thermal control paints, and processes for making coated substrates.

An optical coating has a siloxane polymer and noble metal particles. The coating has an index of refraction that is different for in-plane and out-of-plane. The coating has reverse optical dispersion within the visible wavelength range, and preferably a maximum absorption peak between 400-1000 nm wavelength range is greater than 700 nm. In one example the metal particles are noble metal nanorods having an average particle width of less than 400 nm.