Method of making multi-layer composites having a fluoropolymer layer
AssigneeMinnesota Mining and Manufacturing Company
InventorTatsuo Fukushi
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Abstract
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a hydrocarbon polymer is disclosed. The method comprises coating an aliphatic di- or polyamine of less than 1,000 molecular weight onto at least one of the layers. The resulting multi-layer compositions and articles comprising the composition are also disclosed.
Claims16
A method for increasing the adhesion of a first layer comprising a fluoropolymer to a second layer comprising a polymer selected from the group consisting of polyamides, polyimides, and carboxyl, anhydride, and imide functional polyolefins, comprising the steps of
- (a) coating onto at least one face of at least one of said layers a composition comprising an aliphatic di- or polyamine of less than 1,000 molecular weight;
- (b) placing said layers together to form a multi-layer composition such that said amine composition is between and in contact with the two layers;
- wherein said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to compositions without said di- or polyamine.
Dependencies are inferred from the claim text.