Rubber laminate
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United States of America Patent
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Nov 5, 2013
Grant Date -
May 5, 2011
app pub date -
Jun 18, 2009
filing date -
Jun 26, 2008
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Abstract
Disclosed is a rubber laminate containing an unvulcanized fluororubber composition comprising: (A) fluororubber comprising a terpolymer containing 50 to 60 mol % of a constitutional unit derived from vinylidene fluoride, 20 to 30 mol % of a constitutional unit derived from tetrafluoroethylene, and 10 to 30 mol % of a constitutional unit derived from hexafluoropropene; (B) an oxide and/or hydroxide of a divalent metal; (C) a polyhydroxy aromatic compound; (D) a 2-substituted-4,6-dithiol-s-triazine derivative; (E1) a quaternary phosphonium salt or a tetraalkyl ammonium salt; (E2) 1,8-diazabicyclo[5.4.0]undecene-7 (salt); and (E3) a 5-substituted-1,5-diazabicyclo[4.3.0]-5-nonene (salt). In this rubber laminate, the fluororubber layer and the NBR layer are firmly vulcanization-bonded to each other without impairing various excellent characteristics of the fluororubber constituting the rubber layer.
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