Layered molding including fluoroplastic layer crosslinked with rubber layer
AssigneeToyoda Gosei Co., Ltd.
InventorsMasaki Koike, Atsushi Suzuki, Daisuke Tsutsumi, Masayoshi Ichikawa
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Abstract
A layered molding and method for making the same which has excellent antipermeability to gasoline. The layered molding is defined by a fluoroplastic and an epichlorohydrin rubber. The fluoroplastic is a copolymer formed from at least two precursors selected from the group consisting of hexafluoropropylene, tetrafluoroethylene, and vinylidene fluoride, which are selected within a plotted range to preferably form a binary or tertiary composition. The epichlorohydrin rubber contains organic phosphonium. The resulting layered molding does not require an adhesive agent.
Claims16
A layered molding comprising:
- a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber, said rubber layer containing an organic phosphonium;
- and
- fluoroplastic layer disposed against and crosslinked with said rubber layer at an interfacial boundary positioned therebetween, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinylidene fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G:
- ______________________________________ HFP TFE VDF ______________________________________ A:
- 60 0 40 B:
- 40 25 35 C:
- 18 32 50 D:
- 25 0 75 E:
- 0 0 100 F:
- 0 100 0 G:
- 100 0 0 ______________________________________
A layered molding comprising:
- a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber;
- an organic phosphonium layer;
- and
- a fluoroplastic layer crosslinked with said rubber layer, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinyliden fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G:
- ______________________________________ HFP TFE VDF ______________________________________ A:
- 60 0 40 B:
- 40 25 35 C:
- 18 32 50 D:
- 25 0 75 E:
- 0 0 100 F:
- 0 100 0 G:
- 100 0 0 ______________________________________
Dependencies are inferred from the claim text.