AQUEOUS COATING COMPOSITION
First Claim
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1. An aqueous coating composition comprising:
- (A) an emulsion polymer comprising as polymerized units, based on the dry weight of the emulsion polymer,(i) from 1.9% to 3.5% by weight of phosphorous-containing monomers, wherein the phosphorous-containing monomers comprise,(a) a phosphorous-containing (meth)acrylate, and(b) a phosphorous-containing surfactant or a salt thereof, wherein the phosphorous-containing surfactant has the structure of formula (I),
R—
O—
(CmH2mO)n—
PO3H2
(I),wherein R is a C8-C22 branched or linear alkenyl group, m is an integer of from 2 to 4, and n is an integer of from 3 to 40; and
wherein the weight ratio of phosphorous-containing (meth)acrylate to total phosphorous-containing monomers is in the range of 0.1 to 0.8; and
(ii) from 0 to 1% by weight of an ethylenically unsaturated ionic monomer carrying at least one functional group selected from carboxyl, carboxylic anhydride, sulphonate, phosphonate, or combinations thereof;
(B) a wax emulsion in an amount of from 1% to 10% by solids weight, based on the dry weight of the emulsion polymer; and
(C) a pigment.
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Abstract
The present invention provides an aqueous coating composition that provides coatings with improved hydrophilic stain repellency.
1 Citation
10 Claims
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1. An aqueous coating composition comprising:
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(A) an emulsion polymer comprising as polymerized units, based on the dry weight of the emulsion polymer, (i) from 1.9% to 3.5% by weight of phosphorous-containing monomers, wherein the phosphorous-containing monomers comprise, (a) a phosphorous-containing (meth)acrylate, and (b) a phosphorous-containing surfactant or a salt thereof, wherein the phosphorous-containing surfactant has the structure of formula (I),
R—
O—
(CmH2mO)n—
PO3H2
(I),wherein R is a C8-C22 branched or linear alkenyl group, m is an integer of from 2 to 4, and n is an integer of from 3 to 40; and wherein the weight ratio of phosphorous-containing (meth)acrylate to total phosphorous-containing monomers is in the range of 0.1 to 0.8; and (ii) from 0 to 1% by weight of an ethylenically unsaturated ionic monomer carrying at least one functional group selected from carboxyl, carboxylic anhydride, sulphonate, phosphonate, or combinations thereof; (B) a wax emulsion in an amount of from 1% to 10% by solids weight, based on the dry weight of the emulsion polymer; and (C) a pigment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification