A coated article comprises an article comprising a surface and a galvanic barrier coating disposed on the surface. The galvanic barrier coating is formed from a galvanic barrier coating composition comprising (a) a thermoplastic resin, (b) an epoxy-based resin, (c) a curing agent, and (d) non-compressible, non-marring microsphere particles. Methods of preparing and using the coated article are also disclosed.

A dispersion of particles is provided that each contain at least one ferromagnetic domain and at least one phosphor domain having a stimulation wavelength, a glow persistence of at least 5 seconds and a visible wavelength emission. A polymeric resin that is transmissive of the stimulation wavelength and the visible wavelength emission coats the ferromagnetic and phosphor domains to define each particle size. A method of non-destructively inspecting a test article applies a dispersion of these particles to a surface of the test article. A magnetic field is then induced including the test article. The surface of the test article is exposed to incident energy adapted to stimulate phosphorescence of the dispersion of particles. With the incident energy exposure ceased, the position of the dispersion of particles on the surface of the test article is imaged. An inspection system for non-destructively inspecting a test article is also provided.

A polymer-based substrate is proposed, which in particular is electrostatically coatable, wherein the substrate comprises a substrate base body made using a polymeric material and a coating applied to a surface region of the substrate base body, wherein the polymeric material comprises a first polymer, wherein the coating comprises a matrix polymer and an additive which is dispersed in the matrix polymer and reduces the surface resistance of the coating, said additive having a proportion that is selected such that the specific surface resistance of the coating is about 10.sup.10 Ohm or less, and wherein the matrix polymer is selected such that it is compatible with the first polymer.

A polymer-based substrate is proposed, which in particular is electrostatically coatable, wherein the substrate comprises a substrate base body made using a polymeric material and a coating applied to a surface region of the substrate base body, wherein the polymeric material comprises a first polymer, wherein the coating comprises a matrix polymer and an additive which is dispersed in the matrix polymer and reduces the surface resistance of the coating, said additive having a proportion that is selected such that the specific surface resistance of the coating is about 10.sup.10 Ohm or less, and wherein the matrix polymer is selected such that it is compatible with the first polymer.

A polymer-based substrate is proposed, which in particular is electrostatically coatable, wherein the substrate comprises a substrate base body made using a polymeric material and a coating applied to a surface region of the substrate base body, wherein the polymeric material comprises a first polymer, wherein the coating comprises a matrix polymer and an additive which is dispersed in the matrix polymer and reduces the surface resistance of the coating, said additive having a proportion that is selected such that the specific surface resistance of the coating is about 10.sup.10 Ohm or less, and wherein the matrix polymer is selected such that it is compatible with the first polymer.

Disclosed are coating material compositions including (i) at least one polyol component (A), (ii) at least one crosslinking agent component (B) having groups reactive toward hydroxyl groups of component (A), (iii) at least one polyamide component (P1) in which the acid amide groups are connected by a saturated, aliphatic hydrocarbyl radical having 6 to 10 carbon atoms. Component (P1) is used in particulate form in which a size distribution (D.sub.50) is 20 to 100 m. The coating material compositions further include (iv) at least one polycarboxamide component (P2) possessing the following structural formula

##STR00001##

in which s is 1, 2 or 3, t is 0 or 1, s+t is 2 or 3, R is a specific (s+t)-valent organic radical, and at least one of the radicals R.sup.1 and R.sup.2 carries at least one hydroxyl group. Also disclosed are methods of producing the coating material compositions.

Disclosed are coating material compositions including (i) at least one polyol component (A), (ii) at least one crosslinking agent component (B) having groups reactive toward hydroxyl groups of component (A), (iii) at least one polyamide component (P1) in which the acid amide groups are connected by a saturated, aliphatic hydrocarbyl radical having 6 to 10 carbon atoms. Component (P1) is used in particulate form in which a size distribution (D.sub.50) is 20 to 100 m. The coating material compositions further include (iv) at least one polycarboxamide component (P2) possessing the following structural formula

##STR00001##

in which s is 1, 2 or 3, t is 0 or 1, s+t is 2 or 3, R is a specific (s+t)-valent organic radical, and at least one of the radicals R.sup.1 and R.sup.2 carries at least one hydroxyl group. Also disclosed are methods of producing the coating material compositions.

A polymeric powder composition for three-dimensional printing includes first, second, and third polymeric particles. The first particles, having a first average size, are present in an amount ranging from about 70 wt % to about 95 wt %. The second particles, having a second average size smaller than the first average size, are present in an amount ranging from about 0.5 wt % to about 21 wt %. The third particles, having a third average size smaller than the second average size, are present in an amount ranging from greater than 0 wt % up to about 21 wt %. Each of the first, second, and third average sizes independently ranges from 5 m to about 100 m. A sum of the fractional weight ratios of all of the polymeric particles in the polymeric powder composition equals 1.

A polymeric powder composition for three-dimensional printing includes first, second, and third polymeric particles. The first particles, having a first average size, are present in an amount ranging from about 70 wt % to about 95 wt %. The second particles, having a second average size smaller than the first average size, are present in an amount ranging from about 0.5 wt % to about 21 wt %. The third particles, having a third average size smaller than the second average size, are present in an amount ranging from greater than 0 wt % up to about 21 wt %. Each of the first, second, and third average sizes independently ranges from 5 m to about 100 m. A sum of the fractional weight ratios of all of the polymeric particles in the polymeric powder composition equals 1.

The present invention relates to a polymer film comprising a base film comprising polyamide-based resin; and two or more kinds of copolymers comprising polyamide-based segments and polyether-based segments, and a method for preparing the polymer film.