Patent 7569267 was granted and assigned to Kureha on August, 2009 by the United States Patent and Trademark Office.
A laminate having a layer structure that a carboxyl group-containing polymer layer (A) and a polyvalent metal compound-containing layer (B) are arranged adjacently to each other on at least one side of a polymeric base, wherein the polyvalent metal compound-containing layer (B) contains particles of a polyvalent metal compound, a binder resin and a surfactant, and a production process thereof.