Patent ID: 7906577

Claim:
A low VOC latex coating composition comprising: (a) at least one latex polymer; (b) at least one pigment; (c) water; and (d) an additive present in an amount effective to impart freeze-thaw stability to the composition, the additive having structural formula IIA: wherein R 1 , R 2 and R 3 are independently selected from the group consisting of: butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R 5 is selected from the group consisting of —OH, —OCH 3 , —OC 2 H 5 , —OC 3 H 7 , —OC 4 H 9 , —OC 5 H 11 , —OC 6 H 13 , —Cl, —Br, —CN, Phosphonate (—PO 3 − M + ), Phosphate (—PO 4 − M 4 ), Sulfate (—SO 4 − M + ), Sulfonate (—SO 3 − M + ), carboxylate (COO − M + ), a nonionic group, and a quaternary ammonium ion, wherein M + is a cation; further wherein the additive is present in an amount greater than about 1.3% by weight of the polymer.