Method for lubrication and for protection against corrosion, and aqueous colloidal compositions for performing this method

Claim 1

A COMPOSITION FOR COATING METAL SURFACES AND PROVIDING PROTECTION AGAINST CORROSION AND USEFUL AS AN AGENT TO AID IN THE MACHINING, CUTTING AND COOLING OF SUCH METALS COMPRISING IN CIMBINATION AS THE ESSENTIAL INGREDIENTS IN AN AQUEOUS COLLOIDAL SOLUTION, 40-50%, BASED ON THE TOTAL SOLID CONTENT, OF A HYDROPHILIC NEUTRAL COLLOID CAPABLE OF FORMING FILMS WHICH ARE RESISTANT TO MECHANICAL FORCES AND CONSISTING ESSENTIALLY OF STARCH ETHER, 40-60%, BASED ON THE TOTAL SOLIDS CONTENT, OF A WATER SOLUBLE, CORROSION-INHIBITING SALT SELECTED FROM THE GROUP CONSISTING OF CHROMATES OF ALKALI METALS AND WATER SOLUBLE AMINES, BORATES OF WATER SOLUBLE AMINES, SALTS OF MERCAPTOBENZOTHIAZOLE WITH ALKALI METALS AND WATER SOLUBLE AMINES, AND AMINE SALTS OF LACTIC, TARTARIC, CITRIC, OXALIC, MALONIC, SUCCINIC, ADIPIC, SUBERIC AND SEBACIC ACIDS, SAID AMINES WHICH PROVIDE THE CATIONS OF SAID CHROMATES, BORATES AND ALIPHATIC ACIDS BEING SELECTED FROM THE GROUP CONSISTING OF MONO- AND DICYCLOHEXYLAMINES, MONO-, DI-, AND TRIETHANOL AND MONO-, DI-, AND TRIISOPROPANOL AMINES, ETHYLENE DIAMINE, DIETHYLENE TRIAMINE, DIPORPYLENE TRIAMINE AND MORPHOLINE, 5-15%, BASED ON THE TOTAL SOLIDS CONTENT, OF A WATER MISCIBLE SALT OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF WATER-INSOLUBLE ALICYCLIC AND ALKYL AMINES CONTAINING AT LEAST 6 CARBON ATOMS AND AN ACID SELECTED FROM THE GROUP CONSISTING OF FORMIC, ACETIC, TARTARIC, LACTIC, CITRIC, BORIC, HYDROCHLORIC, AND NITRIC ACIDS.