| 摘要 |
<p>A lubricant for working aluminium comprising essentially an aqueous solution of A. A SECONDARY ALKYLAMINE, IN WHICH AT LEAST ONE OF THE ALKYL GROUPS INCLUDES A CHAIN OF AT LEAST 8 CARBON ATOMS, THE SECONDARY ALKYLAMINE INCLUDING A CARBOXYLIC ACID GROUP AS A SUBSTITUENT AT A CARBON ATOM NOT MORE THAN 3 ATOMS DISTANT FROM THE AMINO GROUP AND B. AN ACID PHOSPHATE MONO- OR DI- ESTER OF A POLYALKYLENE OXIDE SURFACE ACTIVE AGENT, SAID ALKYLAMINE AND SAID ACID PHOSPHATE ESTER EACH HAVING A SOLUBILITY OF AT LEAST 1/2% BY WEIGHT IN WATER AND SAID SOLUTION INCLUDING AT LEAST 1/2% BY WEIGHT OF SAID ALKYLAMINE AND SAID ACID PHOSPHATE ESTER.</p> |
