Method for producing a corrosion inhibited antifreeze composition

Claim 1

A METHOD FOR PRODUCING AN ANTIFREEZE COMPOSITION CONSISTING ESSENTIALLY OF INTRODUCING INTO A WATER SOLUBLE FREEZING POINT DEPRESSANT ALCOHOL WITH AGITATION AT A TEMPERATURE BETWEEN ABOUT 195 AND 205*F., AND ALKALI METAL TETRABORATE, AND ALKALINE EARTH METAL OXIDE AND BORIC ACID, CONTINUING SAID AGITATION UNTIL SOLUTIONING OF SUBSTANTIALLY ALL INGREDIENTS OCCURS, REDUCING SAID TEMPERATURE TO BETWEEN ABOUT 140 AND 180*F. AND THEN ADDING AN ALKALI METAL MERCAPTOBENZOTHIAZOLE AND ALKALI METAL HYDROXIDE, COOLING THE RESULTANT MIXTURE TO AMBIENT TEMPERATURE AND ADDING AN ALKALI METAL ARSENITE TOGETHER WITH AN ADDITIONAL AMOUNT OF SAID ALCOHOL, WHEREIN THE PROPORTIONS OF SAID DEPRESSANT, SAID ALKALI METAL TETRABORATE, SAID ALKALINE EARTH OXIDE, SAID BORIC ACID, SAID ALKALI METAL ARSENITE, AND SAID ALKALI METAL MERCAPTOBENZOTHIAZOLE ARE ADJUSTED TO FORM SAID COMPOSITION COMPRISING BETWEEN ABOUT 1 AND 9 WT. PERCENT OF AN INHIBITOR COMPOSITION, SAID COMPOSITION CONSISTING ESSENTIALLY OF BETWEEN ABOUT 24 AND 27 WT. PERCENT ALKALI METAL TETRABORATE, BETWEEN ABOUT 36 AND 45 WT. PERCENT ALKALI METAL METABORATE, BETWEEN ABOUT 4 AND 5 WT. PERCENT ALKALINE EARTH METAL TETRABORATE, BETWEEN ABOUT 6 AND 10 WT. PERCENT ALKALINE EARTH METAL METABORATE, BETWEEN ABOUT 13 AND 22 WT. PERCENT ALKALI METAL ARSENITE AND BETWEEN ABOUT 3 AND 4 WT. PERCENT ALKALI METAL MERCAPTOBENZOTHIAZOLE.

Claim 2

A METHOD FOR PRODUCING AN ANTIFREEZE COMPOSITION CONSISTING ESSENTIALLY OF INTRODUCING INTO A WATER SOLUBLE FREEZING POINT DEPRESSANT ALCOHOL WITH AGITATION AT A TEMPERATURE BETWEEN ABOUT 195 AND 205*F., AND ALKALI METAL TETRABORATE, AND ALKALINE EARTH METAL OXIDE AND BORIC ACID, CONTINUING SAID AGITATION UNTIL SOLUTIONING OF SUBSTANTIALLY ALL INGREDIENTS OCCURS, REDUCING SAID TEMPERATURE TO BETWEEN ABOUT 140 AND 180*F. AND THEN ADDING AN ALKALI METAL MERCAPTOBENZOTHIAZOLE AND ALKALI METAL HYDROXIDE, COOLING THE RESULTANT MIXTURE TO AMBIENT TEMPERATURE AND ADDING AN ALKALI METAL ARSENITE TOGETHER WITH AN ADDITIONAL AMOUNT OF SAID ALCOHOL, WHEREIN THE PROPORTIONS OF SAID DEPRESSANT, SAID ALKALI METAL TETRABORATE, SAID ALKALINE EARTH OXIDE, SAID BORIC ACID, SAID ALKALI METAL ARSENITE, AND SAID ALKALI METAL MERCAPTOBENZOTHIAZOLE ARE ADJUSTED TO FORM SAID COMPOSITION COMPRISING BETWEEN ABOUT 1 AND 9 WT. PERCENT OF AN INHIBITOR COMPOSITION, SAID COMPOSITION CONSISTING ESSENTIALLY OF BETWEEN ABOUT 24 AND 27 WT. PERCENT ALKALI METAL TETRABORATE, BETWEEN ABOUT 36 AND 45 WT. PERCENT ALKALI METAL METABORATE, BETWEEN ABOUT 4 AND 5 WT. PERCENT ALKALINE EARTH METAL TETRABORATE, BETWEEN ABOUT 6 AND 10 WT. PERCENT ALKALINE EARTH METAL METABORATE, BETWEEN ABOUT 13 AND 22 WT. PERCENT ALKALI METAL ARSENITE AND BETWEEN ABOUT 3 AND 4 WT. PERCENT ALKALI METAL MERCAPTOBENZOTHIAZOLE.