The invention is related to a cost-effective method for making a silicone hydrogel contact lens having a crosslinked hydrophilic coating thereon. A method of the invention involves heating a silicone hydrogel contact lens in an aqueous solution in the presence of a water-soluble, highly branched, thermally-crosslinkable hydrophilic polymeric material having positively-charged azetidinium groups, to and at a temperature from about 40° C. to about 140° C. for a period of time sufficient to covalently attach the thermally-crosslinkable hydrophilic polymeric material onto the surface of the silicone hydrogel contact lens through covalent linkages each formed between one azetidinium group and one of the reactive functional groups on and/or near the surface of the silicone hydrogel contact lens, thereby forming a crosslinked hydrophilic coating on the silicone hydrogel contact lens. Such method can be advantageously implemented directly in a sealed lens package during autoclave.

The present application describes novel antifouling coating compositions comprising carbon-based hydrolysable polymers of ethylenically unsaturated monomers of which some include cyclic carbonates or cyclic ethers, e.g. (2,2-dimethyl-1,3-dioxolan-4-yl)methyl (meth)acrylate (IPGA/IPGMA), isopropylidene glycerol ethoxylated acrylate (iPGEOA), isopropylidene glycerol N ethoxylated methacrylate (iPGEOMA) and (2-oxo-1,3-dioxolan-4-yl)methyl (meth)acrylate (GCA/GCMA), and their use in antifouling coating compositions. Novel polymers are also described.

A super-wear-resistant self-cleaning coating, comprising first elastic finish coat and second self-cleaning finish coat. The first elastic finish coat comprises, by mass, 10-60 parts of a two-functionality-degree polyurethane acrylic resin A, 2-7 parts of an initiator A, 10-60 parts of an acrylate monomer A, and 3-40 parts of an additive A. The second self-cleaning finish coat comprises, by mass, 2-30 parts of an acrylic acid-modified organic silicon resin with inorganic powder affinity, 0.3-3 parts of high-hardness micro-powder particles, 2-20 parts of a two-functionality-degree polyurethane acrylic resin B, 10-40 parts of a multi-functionality-degree polyurethane acrylic resin B, 15-45 parts of an acrylate monomer B, 2-7 parts of an initiator B, and 3-40 parts of an additive B. Further disclosed is a preparation method for the super-wear-resistant self-cleaning coating.

The present invention has an object to provide an anti-biofouling coating material which is capable of forming a coating film excellent in anti-biofouling properties and adhesiveness. Further, the present invention has another object to provide a ship, etc. and an article to be used in a humid or wetted environment, having, on its surface, a coating film formed by using the above anti-biofouling coating material. Further, the present invention has other objects to provide a method for preventing adhesion of organisms to a ship, etc. and to provide a method for preventing adhesion of fungi or algae to the surface of an article to be used in a humid or wetted environment, by using the above anti-biofouling coating material. The anti-biofouling coating material of the present invention is an anti-biofouling coating material to be applied to the surface of an article in order to prevent adhesion of organisms, which comprises a polymer F being a fluorinated polymer containing units based on a fluoroolefin, and a polymer G being a polymer containing units based on a (meth)acrylate having a polyoxyalkylene chain.

Polyoxazolin with a photoactivatable group The present invention relates to a polyoxazoline of the formula I as defined below; to a method for synthesizing the polyoxazoline of the formula I, comprising the reaction of an aryl ketone which comprises a deprotonated phenolic hydroxy group with an intermediate polyoxazoline of the formula X as defined below; to a polymer comprising the polyoxazoline of the formula I, where E comprises an ethylenically unsaturated group in polymerized form; to a coated material comprising a coating which contains the polyoxazoline of the formula I or the polymer; and to a use of the polyoxazoline of the formula I or the polymer as antifouling coating.

Various embodiments relate generally to the preparation of functional quaternary ammonium salts. More particularly, various embodiments relate to the preparation of hydroxyl group functionalized quaternary ammonium halides. Various embodiments also relate to the preparation of photocurable quaternary ammonium halides from the hydroxyl group functionalized quaternary ammonium halides. In other embodiments, preparation of hydrolytically curable quaternary ammonium halide derivatives by a sol-gel process is also disclosed. Said hydroxyl group functionalized quaternary ammonium halides are useful for making polymers, which are useful as water insoluble, non-leaching, active by contact antifouling materials.

Provision of hydroxyl group functionalized quaternary ammonium halides, photocurable or hydrolytically curable urethane based polymers thereof and their use as antifouling agents.

The invention relates to ester-linked surface-modifying macromolecules and admixtures thereof as shown below by the representative compounds. The admixtures can be used in industrial and medical applications where enhanced surface properties are desirable (e.g., surface properties reducing or preventing biofouling, immobilization of biomolecules, or denaturation of certain biomolecules). ##STR00001##

A method for producing an anti-fouling coating film includes: a step (1) of applying a fine uneven layer forming agent containing at least one type of polysilazane as at least one type of silica raw material on at least one surface of a base substrate, the aforementioned at least one surface comprising at least one type of resin, to form a fine uneven layer containing silica and polysilazane; a step (2) of applying a modification layer forming agent containing a reactive organic compound and polysiloxane or perfluoropolyether on a surface of the fine uneven layer obtained in the step (1), to form a modification layer containing polysiloxane or perfluoropolyether, and a step (3) of applying lubricating oil containing silicone oil or fluorinated oil on a surface of the modification layer obtained in the step (2), to form a lubricating oil layer.

A super-wear-resistant self-cleaning coating, comprising first elastic finish coat and second self-cleaning finish coat. The first elastic finish coat comprises, by mass, 10-60 parts of a two-functionality-degree polyurethane acrylic resin A, 2-7 parts of an initiator A, 10-60 parts of an acrylate monomer A, and 3-40 parts of an additive A. The second self-cleaning finish coat comprises, by mass, 2-30 parts of an acrylic acid-modified organic silicon resin with inorganic powder affinity, 0.3-3 parts of high-hardness micro-powder particles, 2-20 parts of a two-functionality-degree polyurethane acrylic resin B, 10-40 parts of a multi-functionality-degree polyurethane acrylic resin B, 15-45 parts of an acrylate monomer B, 2-7 parts of an initiator B, and 3-40 parts of an additive B. Further disclosed is a preparation method for the super-wear-resistant self-cleaning coating.