The present invention relates to a graphene composition for use in a coating composition that comprises a resin and a hardener, wherein the resin or the hardener is an active hydrogen-containing component and graphene in the graphene composition is functionalised with i) a dispersing agent comprising any of the following functional groups: NH2, OH and OCNH and ii) an active hydrogen-containing compound being either a) a hardener comprising any of the following functional groups: amino, amide, hydroxyl, carboxylic acid, anhydride, isocyanate, phenol and thiol or, b) a polyol resin

An electrocoat system for electrodeposition is described. The system includes an inorganic bismuth-containing compound or a mixture of inorganic and organic bismuth-containing compounds. The system demonstrates a high degree of crosslinking and produces a cured coating with optimal crosslinking and corrosion resistance.

Anti-corrosion coating for metallic substrates obtainable by reacting an organic polyisocyanate with a compound containing isocyanate-reactive hydrogen atoms at an isocyanate index of between 1000 and 5000% in the presence of a trimerisation catalyst.

Polycyclocarbonate compounds and upgraded molecular weight polymers made from such compounds are provided. The polymers have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.

A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.

Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material. These multiphase polymer compositions may be used for other applications, such as self-cleaning, self-healing, or flame-retardant coatings. Methods of making and using these multiphase polymer compositions are disclosed.

An electrocoating composition and a coating formed from the composition are described herein. The electrocoating composition includes at least an epoxy resin component, an isocyanate-functional component and a silica-based additive. The coating shows about 40 to 70% reduction in edge corrosion relative to a conventional coating.

Disclosed are aliphatic polyester resins containing specific molar quantities of 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and solvent borne, thermosetting monocoating compositions prepared therefrom. The aliphatic polyesters exhibit good hardness and flexibility when formulated into thermosetting coatings compositions.

The present invention provides substantially isocyanate-free multicomponent compositions useful in making rapid dry primer compositions and coatings, the compositions comprising one or more carboxylic acid compounds that contain one of a benzothiazole, benzoxazole, or benzimidazole group, preferably, that contain a benzothiazole group, one or more hydrophobic sulfonic acid catalyst, one or more pigment, extender or filler, one or more a) polycarbamates from alkyd polyol or acrylic polyol and one or more b) a polyaldehydes or the acetal or hemiacetal thereof as a second component. The multicomponent compositions cure quickly at a temperature of from 0 C. to less than 80 C. to form a crosslinked polyurethane coating having improved humidity and corrosion resistance.

An electrocoat system for electrodeposition is described. The system includes an inorganic bismuth-containing compound or a mixture of inorganic and organic bismuth-containing compounds. The system demonstrates a high degree of crosslinking and produces a cured coating with optimal crosslinking and corrosion resistance.