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 of making a controlled swell-rate swellable packer comprises disposing a sealing element about at least a portion of the mandrel, applying a mask onto at least a portion an outer surface of the sealing element, wherein the sealing element comprises a swellable material, and wherein the mask comprises void spaces, and applying a jacket to the sealing element not covered by the mask. The jacket may be disposed such that it covers at least a portion of an outer surface of the sealing element. The jacket is configured to substantially prevent fluid communication between a fluid disposed outside of the jacket and the portion of the outer surface of the sealing element covered by the jacket. The mask may be removed from the sealing element after applying the jacket to the sealing element not covered by the mask.

A baking-type aqueous organic silicon fluorine-containing polymer paint is provided, which includes an aqueous organic silicon fluorine-containing polymer dispersion and a curing agent. The curing agent includes aqueous amino resin, aqueous isocyanate resin, or a combination thereof. In addition, the paint may further include an assist resin such as aqueous polyester resin, aqueous acrylic acid resin, aqueous epoxy resin, aqueous phenoxy resin, or a combination thereof.

The present invention provides an aqueous binder system for a coating composition, the aqueous binder system comprising A) at least 10 wt % water, based on the total weight of the aqueous binder system; B) at least one hydroxyl-functional binder polymer; and C) from 0.1 to 20 wt %, based on the total weight of the aqueous binder system, of at least one quaternary ammonium compound, wherein the quaternary ammonium compound comprises a core quaternary ammonium group which has pendant groups which comprise i) a hydrocarbyl group having 8 to 16 carbon atoms which is a linear or branched, alkyl or alkenyl group; ii) two independent hydroxyl terminated groups, wherein each hydroxyl terminated group comprises from 1 to 10 alkylene oxide residues and wherein the total number of alkylene oxide residues in the quaternary ammonium compound is from 5 to 12; and iii) a CI to C8 hydrocarbyl group; wherein B) and C) are not covalently bonded to each other within the aqueous binder system. A coating composition, a coating, methods and uses are also provided.

A pigmented aqueous basecoat material that includes a dimer fatty acid/polyesterdiol reaction product which is preparable by reacting (a) dimer fatty acids with (b) at least one polyesterdiol of the general structural formula (I) ##STR00001##
where: R is a divalent radical including 2-10 carbon atoms; R.sup.1 and R.sup.2 are independently straight-chain or branched alkylene radicals having 2-10 carbon atoms; X and Y are independently O, S or NR.sup.3, where R.sup.3 is hydrogen or an alkyl radical having 1-6 carbon atoms; and m and n are selected accordingly such that the polyesterdiol possesses a number-average molecular weight of 450-2200 g/mol, components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7, and the resulting dimer fatty acid/polyesterdiol reaction product possesses a number-average molecular weight of 1200-5000 g/mol and an acid number <10 mg KOH/g.

A composite can include alternating layers of a first layer including a 2D material and a second layer including a polymer matrix. Fabrication methods can take a thin layer of molecular thickness and construct large composite stacks that scale exponentially with the number of processing steps. An analogous shear scrolling method can create Archimedean scroll fibers from single layers with similar scaling. These methods can produce materials that demonstrate the .fwdarw. limit while combining electrical and optical properties minimal volume fraction of the filler.

Curable compositions comprising 1,1-di-activated vinyl compounds are provided herein. Also provided are coatings formed from 1,1-di-activated vinyl compounds. Also provided are processes for coating substrates and articles. Curable compositions including 1,1-di-activated vinyl compounds that function as crosslinking agents are described.

A composition that is easily applied, clear, well-bonded, and superhydrophobic is disclosed. In one aspect, the composition includes a hydrophobic fluorinated solvent, a binder comprising a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is a structure including a substrate coated with the composition, as well as a method for making the composition and a method of coating a substrate with the composition.

A coating that can be easily applied, clear, well-bonded, and superhydrophobic is disclosed. In one aspect, a method for coating a substrate comprises providing a substrate having a surface, disposing a coating composition adjacent the surface, the composition comprising a hydrophobic fluorinated solvent, a binder comprising a hydrophobic fluorinated polymer, and hydrophobic fumed silica nanoparticles. Also disclosed is an article comprising a coating layer, the coating layer comprising a plurality of nanoparticles partially exposed on an outward surface thereof.

A mess-free coloring system comprising a coloring medium and optionally one or more coloring utensils is disclosed. The coloring medium can include a substrate with or without decorative effects and one or more coating layers on a surface of the substrate. In various examples, the one or more coating layers include a color-triggering developer, e.g., in the form of a substantially clear resin, and an opaque pigment. Decorative effects integrated with or disposed on the substrate, while initially obscured by the one or more coating layers, can be revealed when the coating layers are mixed with at least one color precursor stored and dispensed from a coloring utensil. The opaque pigment is selected and configured such that, upon receipt of at least one color precursor by the one or more coating layers, a change in the pigment's reflective index occurs as the pigment dissolves into the clear resin developer.