Durable antibacterial coatings are prepared by inter-diffusing zwitterionic polyurethane in acrylic polyurethane. Bacterial attachment is substantially eliminated from the surface of the coatings due to the hydrophilicity of the zwitterionic polyurethane. Long-term antibacterial properties were observed for both Gram-negative and Gram-positive bacteria even when the coatings were constantly challenged by mechanical abrasion.

Described herein is a composite coating on a substrate including a parylene layer deposited on a substrate surface of a substrate, a metal oxide layer covering the parylene layer, and a metal oxide, parylene hybrid layer formed between the metal oxide layer and the parylene layer.

Components with improved erosion resistance are disclosed. A surface of the component or a substrate of the component is modified by coating the substrate with an elastomer layer. The elastomer layer is then modified by embedding hard particles onto an outer side of the elastomer layer. The hard particles exhibit higher fractured toughness providing enhanced erosion protection. The elastic properties of the elastomer experience little reduction because the surface embedded particles are located only at the outer side or outer surface of the elastomer layer. Therefore, the bond between the inner side of the elastomer layer and the substrate or component surface is not interfered with and the potential for electro-chemical corrosion and poor adhesion are not increased by the presence of the hard particles as the hard particles are located away from the inner face between the elastomer layer and the substrate.

A method for imparting an optical element with at least one light influencing property in a gradient pattern. The method includes (a) providing an optical substrate having first and second surfaces; (b) depositing a first composition over the first surface of the optical substrate so as to provide a first treated surface region and an untreated surface region, the first composition including a material which provides a light influencing property; (c) depositing a second composition over the optical substrate of (b) to provide a second treated surface region over the untreated surface region and over a portion of the first treated surface region to form a first overlap region; and (d) spinning the optical substrate of (c) thereby providing the optical element having a light influencing property in a gradient pattern.

A coated article for use as a display screen for automotive displays includes a substrate that is a glass or a glass ceramic and has at least one surface, and an ETC coating bonded to the surface of the substrate by inkjet printing. A method for applying the ETC coating onto the substrate to produce the coated articles includes providing the substrate having the surface, where the substrate is a glass substrate or a glass ceramic substrate. The method further includes preparing an ETC coating composition that includes a polymer and a solvent. The viscosity of the ETC coating composition is from 2 cP to 30 cP. The method further includes inkjet printing the ETC coating composition onto the surface of the substrate and curing the ETC coating composition to produce the ETC coating. Inkjet printing increases the durability and uniformity of the ETC coating.

Components with improved erosion resistance are disclosed. A surface of the component or a substrate of the component is modified by coating the substrate with an elastomer layer. The elastomer layer is then modified by embedding hard particles onto an outer side of the elastomer layer. The hard particles exhibit higher fractured toughness providing enhanced erosion protection. The elastic properties of the elastomer experience little reduction because the surface embedded particles are located only at the outer side or outer surface of the elastomer layer. Therefore, the bond between the inner side of the elastomer layer and the substrate or component surface is not interfered with and the potential for electro-chemical corrosion and poor adhesion are not increased by the presence of the hard particles as the hard particles are located away from the inner face between the elastomer layer and the substrate.

A coating and related methods useful for reducing insect residue on moving surfaces, such as turbine blades or aircraft. The coating can include alternating layers of a perfluorinated acrylic copolymer and silicon dioxide nanoparticles that have been infused into one another via thermal annealing processes. The coating may be super-hydrophobic and exhibits desirable durability characteristics.

The present disclosure generally relates to patterned gradient polymer films and methods for making the same, and more particularly to patterned gradient optical films that have regions that include variations in optical properties such as refractive index, haze, transmission, clarity, or a combination thereof. The variation in optical properties can occur across a transverse plane of the film as well as through a thickness direction of the film.

A structural member 10 includes a base material 100 and a protective film 200 covering a surface 110 of the base material 100. When, in a cross-section of the protective film 200 cut perpendicularly to the surface 110, a proportion of pores per unit area is defined as porosity, the porosity in a first portion 201 that is a portion of the cross-section is lower than the porosity in a second portion 202 that is a portion of the cross-section closer to the base material 100 side thereof than the first portion 201.

A component, the surface of which is at least partially covered with a coating, wherein the coating comprises a PVD coating arranged between a first paint layer and a second paint layer and the first paint layer forms a base coat layer on the surface and the second paint layer forms a top coat layer having a top coat thickness on the PVD coating, wherein at least the top coat layer was produced with UV-curable paint. Proceeding from the interface of the PVD coating in a region smaller than the top coat thickness, the top coat layer has a lower degree of cross-linking induced by UV light than in the part of the top coat layer connected to said region. The invention relates in particular to a method for producing such a component.