| http://www.w3.org/ns/prov#value | - For example there is a method wherein e.g. a novolak type phenolic resin is blended e.g. by roll kneading with a nitrile rubber consisting of units of acrylonitrile and butadiene, as a rubber having a relatively good compatibility, to prepare a resin having a nitrile rubber dispersed in a novolak type phenolic resin, and this resin is employed.
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