| http://www.w3.org/ns/prov#value | - Additionally, azo compounds such as 2,2???-azobisisobutyronitrile, 2,2???-azobis(2,4-dimethylpentanenitrile) and 1,1???-azobis(cyclohexanecarbonitrile) may be used as the initiator. [0076] The amount of free radical initiator added to the blend of polypropylene and poly(ethylene oxide) is from about 0.1 to about 2 weight percent, preferably from about 0.1 to about 1 weight percent, based on the to
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