Coatings with early water resistance

A water-based coating composition comprising:

• (a) a (meth)acrylic polymer containing at least one functional group having an active hydrogen;
• (b) an epoxy silane oligomer composition containing
• (i) a monomer in an amount of from 5 to 15 weight percent and having the structure of Formula (I):
• (Zc)a(R1O)3-2aSi—R2 (I)
• (ii) a dimer in the amount of from 5 to 20 weight percent and having the structure of Formula (II):
• (Zc)b(R1O)2-2b(R2)Si—O—Si(R2)(OR1)2-2c(Zc)c (II);
• (iii) at least one trimer having a linear structure (III) or a cyclic structure (IV):
• in the amount of from 5 to 20 weight percent, wherein the total amount of the trimer (iii) is the sum of the weights of linear trimer of Formula (III) and/or cyclic trimer of Formula (IV);
• and
• (iv) at least one poly-oligomer having the structure of Formula (V):
• in the amount of from 45 to 85 weight percent, wherein the total amount of poly-oligomer (iv) is the sum of the weights of each component having a structure of Formula (V),
• wherein
• each occurrence of Zc is independently a divalent group —OR4O—, where R4 is independently a divalent linear alkylene group of 2 to 6 carbon atoms or a branched alkylene group of 3 to 6 carbon atoms, with the provisos that
• (i) the two oxygen atoms are bonded to two different carbon atoms in R4 and
• (ii) the open valence of each oxygen atom is bonded to the same Si atom to form a cyclic 1,3-dioxa-2-sila-cycloalkyl group;
• each occurrence of R1 is independently a monovalent linear alkyl group containing from 1 to 6 carbon atoms, a branched alkyl group containing from 3 to 6 carbon atoms or a —OR4OH group where R4 is as above;
• each occurrence of R2 is
• each occurrence of R3 is independently a monovalent linear alkyl group containing from 1 to 6 carbon atoms, a branched alkyl group containing from 3 to 6 carbon atoms, a —OR4OH group where R4 is as above, or
• where each occurrence of R5 is independently a monovalent linear alkyl group containing from 1 to 6 carbon atoms, a branched alkyl group containing from 3 to 6 carbon atoms, a —OR4OH group where R4 is as above, or
• and the subscripts a, b, c, d, e, f, g, h, i, m and n are integers, where a, b, c, d, e, f, g, h and i are independently 0 or 1, m is 0 to 5 and n is 2 to 15, and wherein the weight percentages are based on the total weight of the sum of components (i), (ii), (iii) and (iv);
• (c) an emulsifier;
• (d) titanium oxide particles;
• (e) a siliceous particulate filler;
• and
• (f) water.