Coating compositions containing a silane additive and structures coated therewith
First Claim
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1. A coated multilayer structure comprising:
- a polymeric base layer;
an inorganic oxide gas barrier layer on a surface of the polymeric base layer; and
a top coat on the inorganic oxide gas barrier layer, the top coat comprising (i) an organic compound capable of reducing the permeability of the gas barrier layer to gas or vapor, and (ii) a silane additive crosslinking the organic compound and the inorganic oxide.
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Abstract
Coatings are provided to give inorganic oxide coated polymeric structures a top coat that improves the gas barrier properties of the structure while enhancing the water resistance of the top coating and while improving the adhesion of the top coat to an inorganic oxide substrate layer. These top coat compositions comprise an organic compound in combination with a silane additive which crosslinks the organic compound with the inorganic oxide. Multilayer structures having this top coat are also provided, particularly in the form of containers for food and beverage packaging.
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Citations
36 Claims
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1. A coated multilayer structure comprising:
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a polymeric base layer;
an inorganic oxide gas barrier layer on a surface of the polymeric base layer; and
a top coat on the inorganic oxide gas barrier layer, the top coat comprising (i) an organic compound capable of reducing the permeability of the gas barrier layer to gas or vapor, and (ii) a silane additive crosslinking the organic compound and the inorganic oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for reducing the permeability of vapor or gas though a multilayer structure comprising a polymeric base layer and an inorganic oxide gas barrier layer on a surface of the polymeric base layer, the method comprising:
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applying to the inorganic oxide gas barrier layer a solution or emulsion comprising (i) an organic compound capable of reducing the permeability of the multilayer structure to gas or vapor, and (ii) a silane additive capable of crosslinking the organic compound and the inorganic oxide, to form a top coat, and drying the top coat, thereby causing the silane additive to crosslink the organic compound with the inorganic oxide. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A method of packaging a beverage comprising:
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providing a container comprising a polymeric container body and an inorganic oxide gas barrier layer on an exterior surface of the container body;
applying to the inorganic oxide gas barrier layer a top coat comprising (i) an organic compound capable of reducing the permeability of the gas barrier layer to gas or vapor, and (ii) a silane additive crosslinking the organic compound and the inorganic oxide; and
filling the container with a beverage. - View Dependent Claims (33, 34, 35, 36)
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Specification