| 摘要 |
In a common salt electrolysis apparatus, the trough is lined with and the leads to the graphite anodes are protected by a material comprising chlorinated polyvinyl chloride having a chlorine content of 64 to 70% by weight and having from 50 to 90% of the chlorine atoms in 1,2-dichloroethylene units, the covering containing substantially no chlorinated polyolefin.ALSO:A protective covering comprises chlorinated polyvinyl chloride having a chlorine content of 64 to 70% by weight, and having from 50 to 90% of the chlorine atoms in 1,2 dichloroethylene units, the covering containing substantially no chlorinated polyolefin.
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