| abstract |
The present invention relates to a barrier composition comprising a dispersion, emulsion or solution of a polymer, starch or starch derivative; colloidal silica particles and a curing agent capable of cross-linking said polymer, starch or starch derivative and coupling said silica particles thereto. The invention also relates to a barrier layer obtainable from said barrier composition and a method of providing such composition and layer. The invention also relates to a laminated packaging material comprising a substrate layer and a barrier layer formed from a barrier composition on at least one side of the substrate layer. The invention also relates to the use thereof, inter alia to provide a packaging container, a barrier film etc. |