A filtration membrane coating comprising a hydrophilic polymer, a surfactant, and one or more charged compounds, each containing one or more sulfonate functionalities and one or more linkable functionalities selected from the group consisting of amine, monochlorotriazine, and dichlorotriazine. The hydrophilic polymer and surfactant form a thin primer layer which is also superhydrophilic. The primer layer improves flux, and enables improved adhesion of the one or more charged compounds, which form a charged dye layer on top of the primer layer when enhances rejection of charged divalent ions. The coating can be applied while the membrane is packaged in its final form, such as in a spiral wound or other configuration.

Cationic pillar[n]arenes, e.g., positively charged poly-ammonium, poly-phosphonium and poly-imidazolium pillar[5-6]arene derivatives are capable of inhibiting or preventing biofilm formation, and facilitating existing biofilm decomposition. A composition for inhibiting or disrupting biofilm, e.g., bacterial or fungal biofilm, formation, or reducing biofilm, can include a pharmaceutically acceptable carrier, and a cationic pillar[n]ene.

Disclosed are a colored anti-fouling anti-corrosion surface coating, uses thereof, a colored anti-fouling anti-corrosion surface layer, and a colored anti-fouling anti-corrosion metal. The colored anti-fouling anti-corrosion surface coating includes a fluorine-modified polysilazane and a surface-modified pigment; where the fluorine-modified polysilazane accounts for approximately 5-60% in weight percentage (wt %, %). The coating of the present disclosure can be directly reacted and adhered onto a steel material or a non-ferrous metal material without a primer, and can endow a substance to be coated a suitable color and gloss, and can be directly applied to the field which has been completed in the post-market without any heating or processing within a plant.

Water-based compositions containing a low VOC coalescent, a latex or water-dispersible polymer, and a water-insoluble UV-VIS (preferably, ultraviolet) absorber.

The present invention provides a waterborne self-polishing antifouling paint and a preparation method and application thereof, and belongs to the technical field of marine antifouling paints. The waterborne self-polishing antifouling paint provided by the present invention includes the following components in parts by weight: 30-60 parts of waterborne self-polishing emulsion, 30-70 parts of waterborne slurry, 0.1-0.5 parts of waterborne leveling agent, 0.2-1 parts of waterborne defoamer, 0.5-1 parts of film-forming additive and 10-20 parts of water. The waterborne self-polishing antifouling paint provided by the present invention has an ultra-low content of volatile organic compounds (VOCs) (less than 20 g/L), and is environmentally friendly. The waterborne self-polishing antifouling paint can be formed into a paint film with good mechanical properties, stable self-polishing rate, and excellent water immersion resistance and antifouling performance.

Water-based compositions that are resistant to dirt pickup, efflorescence, tannin bleed-through and surfactant leaching are described. The water-based composition includes a latex or water-dispersible polymer and a non-VOC UV-VIS (preferably, ultraviolet) absorber as a dirt pickup resistance additive. Methods of making water-based compositions including a non-VOC UV-VIS absorber as an additive are also described.

The present disclosure is generally directed to a mold inhibiting composition. The mold inhibiting composition can be used to treat various different substrates, including building material products, such as facing layers for wallboard. In general, any suitable paper product may be treated with the composition. The composition contains a mold inhibiting agent in combination with a defoamer. The mold inhibiting agent may comprise a pyrithione. The defoamer, on the other hand, may comprise an oil based defoamer containing metal oxide particles, such as silica particles. The mold inhibiting composition can be combined with a water repellent and applied to a substrate without excessive amounts of foam or froth being formed. The defoamer is selected so as to not interfere with the resulting water absorption properties of the product.

A composition comprising a silicon-based polymer, and a derivatized carbon nano-particle is provided. Further, a method for coating a substrate, coated substrates and articles comprising a substrate coated with the composition are provided.

A fouling-proof structure is applicable to synthetic leather or fabric and it includes an alcohol-resistant layer; and a water-based fouling-proof layer disposed on the alcohol-resistant layer, wherein the alcohol-resistant layer is formed by curing an alcohol-resistant combination, and the alcohol-resistant combination comprises polyurethane resin, wherein the water-based fouling-proof layer is formed by curing a water-based fouling-proof combination, and the water-based fouling-proof combination comprises polyurethane resin, water, polymerized siloxanes, water-based PTFE and silicone oil.

Disclosed is a coating composition which includes: polyurethane; and amphiphilic nanoparticles having an amine functional group and a fluorine functional group in their structure. Further provided are a polyurethane-silica composite film including e coating composition and a method of preparing the same.