Abstract:
This invention relates to a coating composition, a method for coating of a metallic substrate as well as the use of a chain-extended aspartate prepolymer for improving the early hardness of the coating composition and in a two-component coating composition.
Abstract:
Layered security bars (2, 4, 6, 8) are provided each having a structural outermost layer (10) and at least one ceramic layer (12) usually surrounding a core (14) to defeat attacks by thieves' tools. The outermost layer (10) is formed of a structural metal ordinarily an elongated tube (18, 36, 56, 72) having a case-hardened exterior (22) and a hollow interior (20, 28, 60, 74) containing discreet ceramic links (26). The embodiments include a simple bar (2), a deluxe prison bar (4), a rodded bar (6) with ceramic rod segments (68), and a shackle (8) with fish-spline links (78). Additional metallic and ceramic layered components are also provided.
Abstract:
The invention relates to a process for the manufacturing of an optical article comprising forming a multilayered coating on at least one face of an uncoated or coated substrate,and forming on the outermost layer of said multilayered coating, a layer-by- layer (LbL) coating exposed to environment, said LbL coating comprising at least two bilayers, each bilayer being formed successively by: i) applying a first layer composition comprising at least one compound A having a first electrical charge; ii) applying, directly onto the first layer resulting from i),a second layer composition comprising at least one compound B having a second electrical charge, said second electrical charge being opposite to said first electrical charge; iii) repeating at least once steps i) and ii), with the provisos that: -each of compounds A and B is independently chosen from polysaccharide polymers and colloids of metal oxide such as TiO 2 and ZrO 2 or silicon oxide, with the proviso that at least one of the compounds A and B is a polysaccharide polymer, -each of said compounds A and B is positively or negatively charged respectively, and d) crosslinking the first and second layers of said bilayers of the LbL coating by treatment with an aqueous composition comprising at least tetrakis(2-hydroxyethyl) orthosilicate (THEOS) as crosslinking agent to induce chemical linkages between compounds A and B. The invention also relates to the optical substrate obtained according to this process.
Abstract:
Articles having crosslinked poly(vinyl alcohol) (PVA) and silica nanoparticle multilayer coatings are provided. More specifically, articles including a substrate, and a multilayer coating attached to the substrate are provided. The multilayer coating includes a first crosslinked poly(vinyl alcohol) (PVA) layer and a first silica layer. The first crosslinked PVA layer is an outermost layer of the multilayer coating. The first silica layer comprises a plurality of acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network. The PVA and silica nanoparticle multilayer coatings can be used on a large variety of substrates and tend to be resistant to wet and dry abrasions, scratches, and impacts.
Abstract:
In a method for treating the surface of objects, in particular vehicle bodies, the object (14; 66) is provided with a functional pattern (36) by means of a coating process.
Abstract:
A coated paperboard (100) comprising: a base substrate (102) having a brightness of about 65 or less measured using TAPPI T452 and a coating (104) on at least one side of the base substrate, wherein the base substrate comprises: one or more opaque layers (114) including a white filler, wherein the opaque layer covers the base substrate so that visibility of the base substrate through the opaque layer is substantially eliminated; a barrier layer (116) covering the opaque layer; wherein the barrier layer substantially prevents aqueous fluids from contacting the opaque layer, and wherein the coated paperboard has a brightness on the side of the base substrate with the coating of about 65 or more measured using TAPPI T452, and a wet brightness drop, on the side of the base substrate with the coating, of about 30 or less, measured using the wet brightness drop test.