| 摘要 |
1508991 Lead oxide pastes for tubular battery plates CHLORIDE GROUP Ltd 9 April 1975 [9 April 1974] 15770/74 Heading H1B Tubular pocket battery plates are filled with a paste comprising finely divided lead oxide, a liquid vehicle and a polyethylene oxide polymer of m.w. of at least 500,000. Several physical characteristics of the paste are described. Ram and screw extrusion apparatus are described for filling the pockets, which includes a valve to allow the paste to be recirculated, when the pockets are not being filled. The apparatus forms the subject of Specification 1,481,952. |
