Akzo Nobel Coatings International B.V.

System and method for estimating aquatic environment-originating biofilm biomass on a coating of an object. The method includes obtaining one or more digital images of a fouled portion of the coating on the object and determining from each of the one or more images a respective reflectance value for the portion of the coating. The method includes determining on the basis of the one or more reflectance values a value of a spectral index representative of biomass and calculating a biomass pigment surface area density on the basis of the spectral index, SI, and one or more calibration values determined for a reference coating. The method includes compensating the calculated biomass pigment surface area density for the reflectance of the coating of the object by applying a compensation associated with the difference of the reflectance of the coating of the object relative to the reference coating.

A one-component powder coating composition is provided comprising a curable resin and one or more curing additives for curing the curable resin, wherein the powder coating composition comprises: one powder coating component comprising the curable resin and the one or more curing additives; and 1.0 to 20 wt % of a dry-blended inorganic particulate additive consisting of inorganic components i), ii), and iii), wherein component i) is non-coated aluminium oxide or non-coated silica, component ii) is aluminium hydroxide and/or aluminum oxyhydroxide, and component iii) is silica, and wherein the powder coating component has a particle size distribution with a Dv90 of at most 50 μm and a Dv50 of at most 30 μm.

This disclosure relates to an in-mold surfacing film for structural composites, in the form of a thermally curable multi-layer film comprising: (a) a release carrier, (b) a surfacing film layer overlying the release carrier, wherein the surfacing film layer comprises an OH-functional polyurethane and a thermally activatable curing agent which can react with the OH groups at a temperature higher than 120° C., and (c) a release liner. Also disclosed is a method for preparing a composite article in-mold using a prepreg and the multi-layer film.

The disclosure relates to a surface capable of detecting liquid, the surface comprising: a substrate; optionally an insulating layer covering the substrate; and a pair of spaced apart conductive lines deposited from a liquid conductive paint comprising a polymeric binder and a pigment, applied by brush, roller, or spray on the substrate or on the insulating layer, wherein the pair of conductive lines is electrically connected to a power source for providing an electric potential difference between the conductive lines in the pair and creating an electric field between the conductive lines in the pair, in such a way that the pair of conductive lines forms a capacitor in a capacitive measurement circuit wherein change in capacitance of the capacitor can be monitored. The disclosure further relates to a method of detecting liquid using such surface.

A radiation-curable coating composition, comprising a monomer mixture comprising: a) at least one butenolide monomer A, which butenolide monomer is a substituted-5-hydroxy-2(5H)-furanone of general formula (I) wherein: n is 0 or an integer of from 1 to 5; m is 0 or 1; R 1 is alkyl or aryl; X is any one of —C(O)—, —C(O)O—, —C(O)NR 2 —, —S(O)—, —S(O2)—, —C(O)S—, —C(S)S— and —C(S)NR 2 —; wherein R 2 is hydrogen, alkyl or aryl; and b) at least one N-vinyl monomer B, which N-vinyl monomer is a compound of general formula (II) wherein R 4 and R 5 are each independently any one of hydrogen, alkyl, aryl, heteroalkyl or heteroaryl and Y is selected from O, NR 6 and S; and wherein either: i) a is 1 and b is 1; or ii) a is 0 and b is 2; and wherein at least one monomer of A and B comprises at least two vinyl groups.

The disclosure is directed to a fouling control coating composition comprising an anionic polymer with one or more metallic cations, in which the anionic polymer has a siloxane moiety that is covalently bound via an amide group. The anionic polymer is an acrylate-based co-polymer made from at least one acrylate-based monomer and at least one acrylamide-based monomer having an attached polysiloxane moiety. The composition is particularly useful as a self-polishing fouling control coating.

Apparatus for depositing a coating composition onto a substrate, said apparatus comprising: • a) a spray applicator ( 1 ) comprising a coating composition reservoir, a pump, a spray nozzle ( 2 ) and a coating composition conduit configured to connect the coating composition reservoir to the spray nozzle; • b) a vapor emitter; and • c) electromechanical means for automatically moving the spray nozzle relative to the substrate; characterized in that the vapor emitter is configured to emit vapor directly onto the spray nozzle, 2024/218233 and which vapor emitter comprises: • i) a fluid reservoir capable of holding the fluid to be vaporized; • ii) a vaporizer configured to convert the fluid to a vapor; and • iii) a vapor conduit ( 6 ) configured to deliver a stream of vapor from the vaporizer through a vapor conduit aperture directly onto the spray nozzle ( 2 ). A process for depositing a coating composition on a substrate; and a coated substrate.

The invention relates to a binder polymer obtainable by copolymerizing a monomer mixture comprising a vinyl monomer M1 and a butenolide monomer M2, wherein the vinyl monomer M1 is a vinyl ether, a vinyl ester, or a combination thereof, and the butenolide monomer M2 is a 5-alkoxy-2(5H)-furanone. The invention further relates to a coating composition comprising such binder polymer and to a substrate coated with a coating deposited from such coating composition.

Method of obtaining a color subpalette from a first moodboard containing one or more digital color images, said method comprising the steps of: (1) generating a first color palette with k 1 representative colors from the first moodboard by a method that takes account of underrepresented colors, (2) providing a second color palette with k 2 colors, (3) ranking the colors in the first color palette according to a scoring algorithm, which assigns a score to each of the colors in the first color palette based on its color difference with each of the colors in the second color palette, and (4) selecting a subset of k sub colors from the first color palette, which have the scores corresponding to the least color difference with the colors in the second color palette, said subset of colors being the color subpalette. The disclosure also provides a data processing device and a computer program product.

A two-component solvent-based coating composition comprising a component A comprising an autoxidizable resin comprising unsaturated fatty acids and a metal-ligand complex as drying catalyst, wherein the metal is manganese, vanadium or iron; and a component B comprising a (meth)acrylate compound and a thiol compound, wherein the (meth)acrylate compound is a poly (meth)acryloyl functional ester of (meth)acrylic acid and a polyhydric alcohol or a poly (meth)acryloyl functional dimer of such ester, wherein component B is free of drying catalyst, wherein component A is free of a compound comprising a thiol group and of a compound comprising a (meth)acryloyl functional group, and wherein the coating composition is free of cobalt.