Patent ID: 6512042
Filing Date: 2003-01-28
Classification: C08F,C09D

Abstract:
An aqueous self-crosslinkable polymeric dispersion having a low moisture permeability comprising:(a) a polymeric component comprising an aqueous dispersion of polymer particles neutralized to a pH of not less than 6, the polymer particles having a Hansch value of 1.5 or greater, an acid number of 0-25, at least 5 percent by weight (â€œwt %â€ ) of a carbonyl functional group capable of reacting with a nitrogen moiety, and at least 1 wt % of a non-acidic functional group having hydrogen-bondable moieties; (b) a crosslinking agent comprising a nitrogen-containing compound having at least two nitrogen functional groups capable of reacting with a carbonyl functional moiety, wherein the mole equivalents ratio of such crosslinking agent to reactive carbonyl moieties is at least 0.25:1, and wherein said dispersion having said low moisture permeability placed in a sealed container is shelf stable for 10 days in an oven at 60Â° C.