| 摘要 |
<p>1499154 Lubricants GULF & WESTERN INDUSTRIES Inc 20 Aug 1975 [22 Aug 1974] 34649/75 Heading C5F A lubricant for working hot metals, e.g. forging, comprises a mixture of sodium bicarbonate and sodium nitrite with either graphite or zinc oxide. It may be applied dry or mixed with water, and in the latter case may also include a surfactant, a pH adjuster or a thickening agent.</p> |
