초록 ▼

Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio

Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1. Coated articles, which are rigid or flexible and elastomeric, and free-standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures.

대표청구항 ▼

[ What is claimed is:] [1.] A barrier coated article formed by(1) applying to a substrate without melt processing an aqueous solution comprising:(a) an elastomeric polymer;(b) a dispersed exfoliated layered filler having an aspect ratio greater than 25, wherein the ratio of said polymer to said fill

[ What is claimed is:] [1.] A barrier coated article formed by(1) applying to a substrate without melt processing an aqueous solution comprising:(a) an elastomeric polymer;(b) a dispersed exfoliated layered filler having an aspect ratio greater than 25, wherein the ratio of said polymer to said filler ranges from 20:1 to 1:1; and(c) at least one surfactant, wherein the solids content of said solution is less than 30%; and(2) allowing said solution to dry to a barrier coating having the same polymer to filler as in said solution,wherein said coating provides an at least 10-fold greater reduction in gas, vapor, and chemical permeability than a coating formed of said polymer alone.