Coolant system treatment tablet
OwnerWilliam R. Kughn, Edward R. Eatoninventors
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Abstract
A solid, water-soluble coolant system treatment tablet for addition to the overflow cannister of an engine coolant system. The tablets are pressed solid cakes including a scale and deposition preventative, a pH buffer, a chemical inhibitor, at least one corrosion preventative, and a binder. The inventive tablets include sodium tetraborate, sodium meta silicate, sodium nitrate, sodium MBT, and for diesel engine use, sodium nitrite.
Claims19
A solid, water-soluble coolant system treatment tablet for addition to the coolant of an engine coolant system, said tablet comprising, by weight based on dry composition:
- from 0.36 to 0.50 percent sodium tetraborate;
- from 0.00 to 0.20 percent sodium meta silicate;
- from 0.04 to 0.20 percent sodium nitrate;
- and
- from 0.05 to 0.20 percent sodium MBT.
A solid, water-soluble tablet for addition to the fluids of an engine coolant system, said tablet comprising a scale and deposition preventative, a pH buffer, a chemical inhibitor, at least one corrosion preventative, and a binder.
A solid, water-soluble coolant system treatment tablet for addition to an engine coolant system employing extended life coolants having carboxylic chemical inhibitor ingredients, said tablet comprising, by weight based on dry composition:
- from 0.00 to 0.50 percent sodium benzoate;
- from 0.00 to 0.30 percent sodium nitrate;
- and
- from 0.05 to 0.50 percent binder and corrosion preventative selected from the group consisting of sodium MBT.and sodium tolyltriazole.
Dependencies are inferred from the claim text.