Abstract: The invention relates an aqueous coating composition comprising an acrylic polymer dissolved in a liquid phase comprising water and a water-miscible solvent, wherein the coating composition comprises at least 50 wt % water, and wherein the acrylic polymer is a film-forming polymer obtainable by free radical polymerization of a monomer mixture comprising in the range of from 30 0 to 70 wt % of a poly(ethyleneglycol) (meth)acrylic monomer a.; in the range of from 2 to 20 wt % of an alkoxysilyl or alkoxyalkylsilyl functional (meth)acrylic monomer b.; and in the range of from 10 to 68 wt % of a hydrophobic ethylenically unsaturated monomer c. The invention further relates to a substrate coated with such coating composition, to a process for controlling aquatic biofouling on a surface of a man-made object, and to use of such coating composition to control aquatic biofouling on a man-made object.

Abstract: The invention relates to a coating composition comprising a) seawater-hydrolyzable groups covalently linked to a polymer backbone, which seawater-hydrolyzable groups are capable of undergoing hydrolysis or ion-exchange when exposed to sea-water, rendering the polymer partially soluble or dispersible in seawater, and b) zwitterionic groups covalently linked to a polymer backbone wherein the polymer backbones to which the sea-water-hydrolyzable groups and the zwitterionic groups are attached serve as a film-forming binder in the coating composition, and wherein the molar ratio of the seawater-hydrolyzable groups a) to the zwitterionic groups b) is 0.1 or higher. The invention also relates to a method of providing a substrate with anti-fouling performance and to a coated substrate.

Abstract: The invention relates to a coating composition comprising a) seawater-hydrolyzable groups covalently linked to a polymer backbone, which seawater-hydrolyzable groups are capable of undergoing hydrolysis or ion-exchange when exposed to sea-water, rendering the polymer partially soluble or dispersible in seawater, and b) zwitterionic groups covalently linked to a polymer backbone wherein the polymer backbones to which the sea-water-hydrolyzable groups and the zwitterionic groups are attached serve as a film-forming binder in the coating composition, and wherein the molar ratio of the seawater-hydrolyzable groups a) to the zwitterionic groups b) is 0.1 or higher. The invention also relates to a method of providing a substrate with anti-fouling performance and to a coated substrate.

Abstract: A film-forming polymer with improved chemical stability in antifouling coating applications, said polymer bearing pendant to its backbone a salt of (i) a basic group with a first pKa of the conjugate acid of at least 4.0 and (ii) an organic acid with a first pKa of 2.0 or less; said basic group being covalently bonded to the polymer backbone.

Abstract: A film-forming polymer with improved chemical stability in antifouling coating applications, said polymer bearing pendant to its backbone a salt of (i) a basic group with a first pKa of the conjugate acid of at least 4.0 and (ii) an organic acid with a first pKa of 2.0 or less; said basic group being covalently bonded to the polymer backbone.

Abstract: The invention relates to a silyl ester copolymer solution having a solids content of at least 55 weight percent and a viscosity of less than 20 poise at 25° C., comprising a silyl ester copolymer having a weight-average molecular weight of less than 20,000. The invention further relates to coating compositions comprising a silyl ester copolymer and to substrates and structures having a cured coating prepared from such a coating composition.

Abstract: The invention pertains to an antifouling coating composition including 20-100% by weight, calculated on the total amount of film-forming components, of a film-forming polymer (A) having an acrylic backbone bearing at least one terminal group of the formula: wherein X represents M is a metal of Group Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, VIa, VIb, VIIa, and VIII of the Periodic Table with a valency of 2 or more and a degree of ionisation less than that of the alkali metals metal; n is an integer of 1 to 2; R represents an organic residue selected from and R1 is a monovalent organic residue, and 80-0% by weight, calculated of polymer (B) a copper-based biocide for aquatic organisms wherein the antifouling coating composition is substantially free of any biocidal zinc compounds and substantially free of rosin, and in that the copper-based biocide has a metallic copper content below 2% by weight, based on the total weight of the copper-based biocide.

Abstract: An antifouling coating composition comprises a binder which is a salt of an amine containing at least one aliphatic hydrocarbon group having 8 to 25 carbon atoms and an addition copolymer of an olefinically unsaturated sulphonic acid, acid sulphate ester, phosphonic acid or acid phosphate ester and at least one olefinically unsaturated comonomer. The coating composition includes an ingredient having biocidal properties for aquatic organisms. The amine is preferably an amine having two aliphatic hydrocarbon groups each having 8 to 25 carbon atoms and the copolymer contains at least 5 mole % of units of an organocyclic ester or amide (A) of an olefinically unsaturated carboxylic acid. The organocyclic ester or amide (A) is preferably an isobornyl ester.

Abstract: The invention relates to an antifouling paint having a binder comprising a rosin material and an auxiliary film-forming resin, the paint including an ingredient having marine biocide properties, wherein the binder comprises a blend of the rosin material and an auxiliary film-forming resin in a ratio of 20:80 to 95:5 by weight, the auxiliary film-forming resin comprising 20-100% by weight of an acid-functional film-forming polymer (A) whose acid groups are blocked by groups capable of hydrolyzing or dissociating to leave a polymer soluble in sea water, the blocking groups being selected from divalent metal atoms bonded to a monovalent organic residue, divalent metal atoms bonded to a hydroxyl residue and monoamine groups which form an organic solvent soluble amine salt of the polymer, and 80-0% by weight of a non-hydrolyzing water-insoluble film-forming polymer (B).

Abstract: The invention relates to an antifouling paint having a binder comprising a rosin material and an auxiliary film-forming resin, the paint including an ingredient having marine biocide properties, wherein the binder comprises a blend of the rosin material and an auxiliary film-forming resin in ratio 20:80 to 95:5% by weight, the auxiliary film-forming resin comprising 20-100% by weight of an acid-functional film forming polymer (A) whose acid groups are blocked by groups capable of hydrolyzing, dissociating or exchanging with seawater species to leave a polymer soluble in seawater, the blocking groups being selected from quaternary ammonium groups which form a quaternary ammonium salt of the polymer and quaternary phosphonium groups which form a quaternary phosphonium salt of the polymer, and 80-20% of a non-hydrolyzing water-insoluble film-forming polymer (B).

Abstract: The invention relates to an antifouling paint having a binder comprising a rosin material and an auxiliary film-forming resin, the paint including an ingredient having marine biocide properties, wherein the binder comprises a blend of the rosin material and an auxiliary film-forming resin in ratio 20:80 to 95:5% by weight, the auxiliary film-forming resin comprising 20-100% by weight of an acid-functional film forming polymer (A) whose acid groups are blocked by groups capable of hydrolyzing, dissociating or exchanging with seawater species to leave a polymer soluble in seawater, the blocking groups being selected from quaternary ammonium groups which form a quaternary ammonium salt of the polymer and quaternary phosphonium groups which form a quaternary phosphonium salt of the polymer, and 80-20% of a non-hydrolyzing water-insoluble film-forming polymer (B).