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Elastomer compositions with silane functionalized silica as reinforcing fillers

  • US 9,403,962 B2
  • Filed: 12/22/2011
  • Issued: 08/02/2016
  • Est. Priority Date: 12/22/2011
  • Status: Active Grant
First Claim
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1. A composition suitable for use in high temperature downhole environments greater than 150°

  • C. comprising a fluoropolymer covalently coupled to a filler through a thermally stable silane coupling agent, the fluoropolymer comprising a cure site monomer incorporated therein, wherein the silane coupling agent is bonded to the cure site monomer of the fluropolymer and wherein the silane coupling agent has a chemically identical reactive moiety to the cure site monomer and wherein the filler is surface treated with the silane coupling agent; and

    the cure site monomer is selected from one of bromine-containing olefins, bromine-containing vinyl ethers, iodine-containing olefins, iodine-containing vinyl ethers, fluorine-containing olefins having a nitrile group, fluorine-containing vinyl ethers having a nitrile group, and non-conjugated dienes.

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