Nitrile copolymer rubber composition and nitrile copolymer latex composition
AssigneeZeon Corporation
InventorsAkira Imada, Haruhiko Fujita, Yoshiyuki Nakamura
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Abstract
A nitrile copolymer rubber composition obtained by coagulation of a nitrile copolymer latex composition comprised of a latex of a nitrile copolymer rubber (A) having α,β-ethylenically unsaturated nitrile monomer units in 55 to 80 wt % and cationic monomer units and/or monomer units able to form cations in which an inorganic filler (B) is dispersed is provided. Note that, preferably, the inorganic filler is a clay. According to the present invention, a nitrile copolymer rubber composition giving a nitrile copolymer rubber cross-linked product with an extremely low gasoline permeability and superior in sour gasoline resistance can be provided.
Claims15
A nitrile copolymer latex composition comprising a latex of a nitrile copolymer rubber (A) having α,β-ethylenically unsaturated nitrile monomer units in 55 to 80 wt % and cationic monomer units and/or monomer units able to form cations into which clay and a plasticizer with an SP value by the HOY method of 8 to 10.2 (cal/cm3)1/2 are dispersed.
Dependencies are inferred from the claim text.