Multi-layer compositions having a fluoropolymer layer
AssigneeMinnesota Mining and Manufacturing Company
InventorTatsuo Fukushi
Life of this patent
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Abstract
A multi-layer composition comprising of a fluoropolymer layer, a hydrocarbon polymer layer, and an aliphatic di- or polyamine having a molecular weight of less than 1,000, wherein the fluoropolymer comprises vinylidene fluoride units; the hydrocarbon polymer is a polyamide, polyimide, or a functionalized polyolefin; and wherein substantially all of the di- or polyamine is located between the fluoropolymer and the hydrocarbon polymer layers, the amount of amine being sufficient to increase the adhesion of the two layers.
Claims4
A multi-layer composition comprising a first layer comprising a fluoropolymer, a second layer in contact with said first layer comprising a hydrocarbon polymer, and an aliphatic di- or polyamine of less that 1,000 molecular weight, wherein said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride, said hydrocarbon polymer is a polyamide, polyimide, or a carboxyl, anhydride, or imide functional polyolefin, substantially all of said amine is located between and in contact with said two layers, and said amine is present in an amount sufficient to increase the adhesion between said layers compared to compositions without said di- or polyamine.
Dependencies are inferred from the claim text.