Patent ID: 11952506
Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. 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.