LEAD / SULFUR ACID ACCUMULATOR, LEAD / SULFUR ACID ACCUMULATOR, AND METHOD FOR REDUCING THE FORMATION OF COLORED DEPOSITS IN A LEAD / SULFUR ACID ACCUMULATOR

摘要

An invention is described which makes it possible to reduce the quantity of the coloured, mostly dark and frequently tacky deposits which form in lead accumulators, having separators of filled polyolefins, during formation and operation. The essential feature is that the separators contain, as a plasticiser, a process oil having a CA value of /=6%, a sulphur content of /=2000 ppm and a polar fraction of /=1%. Preferred process oils to be used as plasticisers are relatively naphthenic oils and naphthenic oils.