The antifouling film includes a polymer layer that includes on a surface thereof an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light. The polymer layer has a proportion of the number of fluorine atoms relative to the sum of the numbers of carbon atoms, nitrogen atoms, oxygen atoms, and fluorine atoms of 33 atom % or more on the surface of the uneven structure and of 3 atom % or less on average in a region 90 to 120 nm deep from the surface of the uneven structure. The polymer layer has a proportion of the number of nitrogen atoms relative to the sum of the numbers of carbon atoms, nitrogen atoms, oxygen atoms, and fluorine atoms of 4 atom % or less on average in a region 90 to 120 nm deep from the surface of the uneven structure.

Free-standing non-fouling polymers and polymeric compositions, monomers and macromonomers for making the polymers and polymeric compositions, objects made from the polymers and polymeric compositions, and methods for making and using the polymers and polymeric compositions.

The present invention provides an anti-fouling and anti-corrosion agent for the marine steel structure surface and preparation method thereof. The emulsion is made of raw materials at the following mass ratios: 1100 to 1500 parts of a polyurethane monomer, 1000 parts of polyether glycol, 200 to 400 parts of an alcohol chain extender, 100 to 250 parts of a hydrophilic chain extender, 200 to 400 parts of epoxy resin polyols, 100 to 150 parts of triethylamine, 400 to 1000 parts of an acrylate monomer, 1000 to 1500 parts of a graphene oxide-protamine composite emulsion, and 5 to 20 parts of an initiator. The solvent-free and composite film-forming resin emulsion of the present invention has both anti-fouling and anti-corrosion functions, which applies to a production of a green and environmental marine coating and protects the marine steel structure surface to prevent from organism attachment and sea water corrosion.

An aqueous formulation that has at least one aqueous hydrophobizing agent and at least one water-soluble cationic polymer can be used to produce aqueous coating compositions that have improved early rain resistance. The water-soluble cationic polymer can have quaternary ammonium groups and amino groups. The hydrophobizing agent is an aqueous silicone resin emulsion, a silicone oil emulsion, an emulsion or microemulsion of an amino-functional silicone oil, a silane emulsion, or mixtures thereof.

Curable coating compositions for preventing biofouling include a) at least one epoxy resin; b) at least one amine-functional poly(dialkylsiloxane) polymer in an amount from 1 to 70% based on the combined weights of components a) and b); and c) at least one alkylene polyamine, polyalkylene polyamine or polymercaptan epoxy curing agent; wherein components b) and c) together provide about 0.75 to 1.5 equivalents of amine nitrogen atoms and/or thiol groups per equivalent of epoxy groups provided by component a). When cured to form an antifouling coating, the coating exhibits a water contact angle of at least 100 as measured using an optical contact angle meter at 22 C. The coating composition adheres well to many substrates, provides good anticorrosion protection and is an effective anti-biofouling measure.

A polymeric composition comprising (i) a plurality of monomers selected from (a) a carboxylic acryloyi monomer; (b) a sulfonic acryloyi monomer; (c) an amine acryloyi monomer; (d) a hydroxyl acryloyi monomer; (e) an alkyl acryloyi monomer; and (f) a polyalkylene hydroxyl acryloyi monomer; (ii) a divalent metallic crosslinking agent; and (c) a stabilizing agent is disclosed herein. Also provided are the use of said polymeric composition as a hydrogel coating material, a method of synthesizing the polymeric composition and the use of the hydrogel material.

The present disclosure describes a strategy to create self-healing, slippery self-lubricating polymers. Lubricating liquids with affinities to polymers can be utilized to get absorbed within the polymer and form a lubricant layer (of the lubricating liquid) on the polymer. The lubricant layer can repel a wide range of materials, including simple and complex fluids (water, hydrocarbons, crude oil and bodily fluids), restore liquid-repellency after physical damage, and resist ice, microorganisms and insects adhesion. Some exemplary applications where self-lubricating polymers will be useful include energy-efficient, friction-reduction fluid handling and transportation, medical devices, anti-icing, optical sensing, and as self-cleaning, and anti-fouling materials operating in extreme environments.

The present invention provides a polymer having antimicrobial and/or antifouling (protein-repellent) properties, a monomer that can be used in a method of producing the polymer of the invention, and a use of the polymer of the invention, including a method for coating the surface of a material, substrate or product with the polymer of the invention, as well as to products comprising the polymer of the invention and/or a coating comprising the polymer of the invention.

A process for PAI-based coating compositions. An embodiment of a method includes manufacturing a coating composition, the manufacturing of the coating composition including mixing a first solvent, the first being solvent being N-formyl morpholine (NFM), with a second solvent to form a first solution; dissolving polyamideimide or polyamide amic acid resin polymer (PAI) in the first solution; precipitating a PAI compound from a mixture of MEK and the first solution; and dissolving the PAI compound in a second solution to generate a coating solution.

A microbial growth and dust retardant roofing shingle comprising a substrate and a pore filling composition applied on the surface of the substrate is disclosed. The pore filling composition comprises a silane or acrylic composition. A method of protecting a substrate from microbial growth and soiling using the pore filling composition of the present disclosure is also disclosed.