Multi-layer articles comprising a fluoropolymer

Details Multi-layer articles comprising a fluoropolymer Multi-layer articles comprising a fluoropolymer

B - Operations, Transporting

32

B

B32B 27/08 (2006.01) B32B 7/04 (2006.01)

Patent

CA 2262660

A multi-layer article comprising a substantially non-fluorinated layer, and a fluorinated layer of fluoropolymer comprising interpolymerized monomeric units derived from one or more of hexafluoropropylene and tetrafluoroethylene monomers, one or more non-fluorinated olefinically unsaturated monomer, and substantially no vinylidene fluoride monomer. The multi-layer article further comprises an aliphatic di-, or polyamine which provides increased adhesion between the layers as compared to a multi-layer article not containing the aliphatic di-, or polyamide. The multi-layer can be prepared by mixing the aliphatic di-, or polyamide into the substantially non-fluorinated polymeric material, or by applying the aliphatic di-, or polyamide to a surface of one or more of the substantially non-fluorinated polymeric material or the fluoropolymer, and thereafter preparing a multi-layer article.

Article multicouche comprenant une couche pratiquement non fluorée et une couche fluorée de fluoropolymère renfermant des motifs monomères interpolymérisés, dérivés d'un ou plusieurs monomères d'hexafluoropropylène et de tétrafluoroéthylène, un ou plusieurs monomères non fluorés, oléfiniquement insaturés et pratiquement pas de monomère de fluorure de vinylidène. L'article multicouche comprend également une diamine ou une polyamine aliphatique qui permet d'obtenir une meilleure adhésion entre les couches comparé à un article multicouche ne contenant pas la diamine ou la polyamine aliphatique. On prépare la multicouche en mélangeant la diamine ou la polyamine aliphatique dans une matière polymère pratiquement non fluorée, ou en appliquant la diamine ou la polyamine aliphatique sur une surface d'au moins une des matières polymères pratiquement non fluorées ou du fluoropolymère pour obtenir ensuite un article multicouche.

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