Fluororubber composition and fluororubber crosslinked product
AssigneeNok Corporation
InventorSuguru Yoshida
Life of this patent
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Abstract
A fluororubber composition containing a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene; a reaction product of silica-aluminum silicate with vinyl ethoxysilane; and hydrotalcite. The fluororubber composition does not substantially contain magnesium oxide and calcium hydroxide. The fluororubber composition contains 2 to 55 parts by weight of the reaction product of silica-aluminum silicate with vinyl ethoxysilane and 0.5 to 10 parts by weight of the hydrotalcite relative to 100 parts by weight of the ternary fluororubber polymer.
Claims14
A fluororubber composition comprising:
- a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene, the ternary fluororubber polymer has a fluoride content of 64 to 67% by weight;
- and a reaction product of silica-aluminum silicate with vinyl ethoxysilane, wherein the fluororubber composition does not substantially contain magnesium oxide and calcium hydroxide;
- and the fluororubber composition contains 10 to 60 parts by weight of the reaction product of silica-aluminum silicate with vinyl ethoxysilane relative to 100 parts by weight of the ternary fluororubber polymer.
A fluororubber composition comprising:
- a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene, the ternary fluororubber polymer has a fluoride content of 64 to 67% by weight;
- a reaction product of silica-aluminum silicate with vinyl ethoxysilane;
- and hydrotalcite, wherein the fluororubber composition does not substantially contain magnesium oxide and calcium hydroxide;
- and the fluororubber composition contains 5 to 55 parts by weight of the reaction product of silica-aluminum silicate with vinyl ethoxysilane and 0.5 to 9 parts by weight of the hydrotalcite relative to 100 parts by weight of the ternary fluororubber polymer.
A fluororubber composition comprising:
- a ternary fluororubber polymer including vinylidene fluoride, perfluorovinyl ether and tetrafluoroethylene, the ternary fluororubber polymer has a fluoride content of 64 to 67% by weight;
- a reaction product of silica-aluminum silicate with vinyl ethoxysilane, the reaction product of silica-aluminum silicate with vinyl ethoxysilane is present at 10 to 30 parts by weight relative to 100 parts by weight of the ternary fluororubber polymer;
- a peroxide crosslinking agent, the peroxide crosslinking agent is present at 0.5 to 5 parts by weight relative to 100 parts by weight of the ternary fluororubber polymer;
- wherein the fluororubber composition has a total content of magnesium oxide and calcium hydroxide in the range of 0 to 0.1 parts by weight relative to 100 parts by weight of the ternary fluororubber polymer.
Dependencies are inferred from the claim text.