Metal cleaning compositions, baths and method

Claim 1

A COMPOSITION USEFUL IN CLEANING OF SOIL FROM DEFORMATIONS IN RIGID ARTICLES, WHICH COMPOSITION IS (A) WATER-SOLUBLE, (B) ALKALINE, AND (C) COMPRISES AS ITS ESSENTIAL INGREDIENTS FOR SAID CLEANING UTILITY: (I) AT LEAST ONE LOWER ALKANOLAMINE MEMBER OF THE CLASS CONSISTING OF MONOETHANOLAMINE, N-AMINOETHYL MONOETHANOLAMINE, AND N-METHYL DIETHANOLAMINE; (II) A SOAP MADE FROM REACTING THE RECOVERED MIXED FATTY ACIDS FROM TALL OIL AND AT LEAST ONE OF SAID ALKANOLAMINES, WITH SAID MIXED ACIDS USED IN SUCH RATIO TO THE ALKANOLAMINE-REACTANT TO LEAVE AN EXCESS OF THE LATTER TO BE THE SAID SPECIFIC ALKANOLAMINE INGREDIENT (I) AND TO THE EXTENT OF LESS THAN A MOLE THEREOF PER MOLE OF SAID SOAP INGREDIENT AND (II) SUCH THAT AN AQUEOUS SOLUTION HAVING A PH FROM ABOUT 9 TO ABOUT 11 RESULTS WHEN SAID ALKANOLAMINE- AND SOAPCONTAINING COMPOSITION IS DISSOLVED IN WATER IN AN AMOUNT FROM ABOUT 2 TO ABOUT 4 OUNCES BY WEIGHT PER GALLON OF SAID AQUEOUS SOLUTION; AND (III) A WATER-SOLUBLE METASILICATE IN SUCH CONCENTRATION THAT FROM ABOUT 0.7 TO ABOUT 1.3 OUNCES OF IT IS CONTAINED PER GALLON OF A DILUTE AQUEOUS BATH PREPARED BY DISSOLVING IN WATER FROM ABOUT 2 TO ABOUT 4 OUNCES BY WEIGHT OF THE OVERALL COMPOSITION PER GALLON OF SAID BATH SOLUTION; AND SAID RESULTING DILUTE AQUEOUS BATH ENABLING COMPLETELY REMOVING GENERALLY WITHIN A FEW MINUTES INCRUSTATIONS OF BUFFING COMPOUNDS FROM RECESSES AS WELL AS GROOVES ON RIGID ARTICLES, UPON SUBJECTING THEM IMMERSED IN SAID DILUTE AQUEOUS BATH TO THE INFLUENCE OF WAVES OF ULTRASONIC FREQUENCY OF FROM ABOUT FIFTEEN TO ABOUT FORTY KILOCYCLES PER SECOND.