Abstract: There is provided an apparatus, and a process using the apparatus, for determining the flow characteristics of a synthetic rubbery polymer in which the vertical displacement is measured of a contact rod which is in contact with a disc contacting a sample of said polymer located between said disc and a base plate.

Abstract: This invention provides a new ion exchange resin which is characterized by having carbodithioate functionality (e.i. P--CS.sub.2.sup.- M.sup.+ where P--represents the resin bead and where M is selected from Na, K and Li).The present ion exchange resin may be prepared from a suitable non-functionalized resin bead by subjecting it to bromination, lithiation and treatment with carbon disulfide. Alternatively, a styrene-divinylbenzene resin which contains from 10 to 50 weight % DVB may be functionalized by lithiation and treatment with CS.sub.2.The carbodithioate functionalized resin of this invention is resistant to hydrolysis and is effective for the removal of Group VIII precious metals (e.g. rhodium) from chemical process streams.

Abstract: This invention provides a plasticized hydrogenated nitrile composition. The composition of the present invention must contain a peroxide vulcanization system and a specific type of plasticizer. Vulcanizates according to the invention have superior resistance to hot air ageing in comparison to conventionally plasticized compositions, and most surprisingly, in comparison to non-plasticized compositions. The compositions of the present invention may be used to prepare hoses, seals, gaskets and other rubber goods.