| http://www.w3.org/ns/prov#value | - A third group of suitable compounds are the polar vinyl polymers, e.g., polyvinyl pyridine, polyvinyl pyrrolidone, polyvinyl alcohol and cellulose derivatives, e.g.,carboxymethylcellulose (CMC).The comminuted rubber preferably has a mean particle size of between 90 .mu.m and 1200 .mu.m and more particularly a media
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