Polymeric films
AssigneeImperial Chemical Industries PLC
InventorCharles R. Hart
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Abstract
A metallized film has a substrate layer of a synthetic polymeric material, and on at least one surface thereof an adherent layer of an acrylic or methacrylic copolymer, the copolymer comprising (a) a comonomer selected from acrylic acid, methacrylic acid or a derivative of acrylic acid or methacrylic acid, (b) a copolymerizable sulphonated ethylenically unsaturated comonomer, and optionally (c) an additional comonomer, said comonomers (a) and (b) being present in the respective molar percentages in the ranges (a) 26 to 99% and (b) 1 to 50%. A metallic layer is on the surface of the at least one adherent layer, remote from the substrate.
Claims8
A metallised film comprising a substrate layer of a synthetic polymeric material having on at least one surface thereof an adherent layer and a metallic layer on the surface of the at least one adherent layer remote from the substrate, characterised in that the adherent layer comprises an acrylic or methacrylic copolymer, the copolymer comprising
- (a) a comonomer selected from acrylic acid, methacrylic acid or a derivative of acrylic acid or methacrylic acid,
- (b) a copolymerisable sulphonated ethylenically unsaturated comonomer, and optionally
- (c) an additional comonomer, said comonomers (a) and (b) being present in the respective molar percentages in the ranges (a) 26 to 99% and (b) 1 to 50%.
Dependencies are inferred from the claim text.