CROSS-LINKABLE RUBBER COMPOSITION FOR SEAL MATERIAL USED AT OILFIELD OR GAS WELL AND SEAL MATERIAL
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United States of America Patent
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Issued Date -
Dec 10, 2015
app pub date -
Jan 23, 2014
filing date -
Jan 28, 2013
priority date (Note) -
Abandoned
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Abstract
A cross-linkable rubber composition for a seal material which is used at an oilfield or gas well made of a nitrile group-containing copolymer rubber (A) which contains α,β-ethylenically unsaturated nitrile monomer units 10 to 60 wt % and has an iodine value of 120 or less, an α,β-ethylenically unsaturated carboxylic acid metal salt (B), and an organic peroxide cross-linking agent (C) is provided. Accordingly, it is possible to provide a rubber composition which is excellent in shapeability, is high in durability against hydrogen sulfide and other corrosive gases, and is suitable for application as a seal material which is used at an oilfield or gas well.
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