Aqueous coating materials based on secondary dispersions of carboxyl-containing copolymers of acrylates or methacrylates
First Claim
1. An aqueous coating material, which contains(A) an aqueous secondary dispersion of a carboxyl-containing copolymer of an acrylate or methacrylate having an acid number of from 15 to 150 and a K value of from 22 to 50, as the binder,(B) not less than 5% by weight, based on the solids content of the binder (A), of pigments, and mixtures thereof, each of which contains a calcium compound or magnesium compound, and(C) 0.1-10% by weight, based on the components (B), of a monoester of phosphoric acid whose alcohol component is derived from a compound of the formula ##STR4## where R is C4 -C24 -alkyl, phenyl or C1 -C18 -alkylphenyl, R1 is H, CH3 or C2 H5 and n is from 1 to 50, as a dispersant, the volume concentration of the components (B) being from 2 to 70% by volume, based on the solids of (A) and (B).
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Abstract
Aqueous coating materials are based on a mixture of
(A) an aqueous secondary dispersion of carboxyl-containing copolymers of acrylates or methacrylates having an acid number of from 15-150 and a K value of 22-50, as a binder,
(B) not less than 5% by weight, based on the binder (A), of pigments and/or fillers, each of which contains or consists of a calcium compound or magnesium compound, and
(C) 0.1-10% by weight, based on the components (B), of a monoester of phosphoric acid whose alcohol component is derived from an alkoxylated C4 -C24 -alcohol, phenol or an alkylphenol,
the concentration of the components (B) being from 2-70% by volume, based on the solids of (A) and (B).
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Citations
8 Claims
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1. An aqueous coating material, which contains
(A) an aqueous secondary dispersion of a carboxyl-containing copolymer of an acrylate or methacrylate having an acid number of from 15 to 150 and a K value of from 22 to 50, as the binder, (B) not less than 5% by weight, based on the solids content of the binder (A), of pigments, and mixtures thereof, each of which contains a calcium compound or magnesium compound, and (C) 0.1-10% by weight, based on the components (B), of a monoester of phosphoric acid whose alcohol component is derived from a compound of the formula ##STR4## where R is C4 -C24 -alkyl, phenyl or C1 -C18 -alkylphenyl, R1 is H, CH3 or C2 H5 and n is from 1 to 50, as a dispersant, the volume concentration of the components (B) being from 2 to 70% by volume, based on the solids of (A) and (B).
Specification