Claims
- 1. A cleaning composition comprising 60-98 wt. % of alkaline salts, up to 25 wt. % of an organic adjuvant and 0.2 to 15 wt. % of a hydrotrope so combined that when in aqueous solution of from about 0.1 to 15 percent by weight, said solution has a pH of from about 10 to 13, said hydrotrope comprising an alkali metal salt of a monocarboxylic acid having a carbon chain length of between C.sub.7 -C.sub.13.
- 2. The composition of claim 1 wherein said alkaline salts are selected from the sodium or potassium carbonates, bicarbonates, ortho phosphates, complex phosphates, silicates, citrates or mixtures thereof.
- 3. The composition of claim 2 wherein said alkaline salts comprise sodium or potassium carbonate or mixtures of potassium or sodium carbonates with sodium bicarbonates.
- 4. The composition of claim 1 wherein said hydrotrope comprises alkali metal salts of octanoic or nonanoic acid.
- 5. The composition of claim 1 wherein said organic adjuvant is selected from surfactants, anti-foam agents and mixtures thereof.
- 6. The composition of claim 5 wherein said surfactant is selected from alkoxylated alcohols, polycarboxylated ethylene oxide condensates of fatty alcohols, and mixtures thereof.
- 7. The composition of claim 1 wherein said composition further comprises a corrosion inhibitor comprising an alkali metal silicate.
- 8. The composition of claim 7 wherein said alkali metal silicate is characterized by an Alk.sub.2 O:SiO.sub.2 mole ratio of 1:0.5 to 1:4.5.
- 9. The composition of claim 8 wherein said alkali metal silicate is potassium silicate.
- 10. An aqueous concentrate comprising from about 5 to about 45 percent by weight of a cleaning composition, said cleaning composition comprising 60-98 wt. % of alkaline salts, up to 25 wt. % of an organic adjuvant and 0.2 to 15 wt. % of a hydrotrope so combined that when in aqueous solution of from about 0.1 to 15 percent by weight, said solution has a pH of from about 10 to 13, said hydrotrope comprising an alkali metal salt of a monocarboxylic acid having a carbon chain length of between C.sub.7 -C.sub.13.
- 11. The concentrate of claim 10 wherein said alkaline salts are selected from the sodium or potassium carbonates, bicarbonates, ortho phosphates, complex phosphates, silicates, citrates or mixtures thereof.
- 12. The concentrate of claim 11 wherein said alkaline salts comprise sodium or potassium carbonate or mixtures of potassium or sodium carbonates with sodium bicarbonates.
- 13. The concentrate of claim 10 wherein said organic adjuvant is selected from surfactants, anti-foam agents and mixtures thereof.
- 14. The concentrate of claim 13 wherein said surfactant is selected from alkoxylated alcohols, polycarboxylated ethylene oxide condensates of fatty alcohols, and mixtures thereof.
- 15. The concentrate of claim 10 wherein said composition further comprises a corrosion inhibitor comprising an alkali metal silicate.
- 16. The concentrate of claim 15 wherein said alkali metal silicate is potassium silicate.
Parent Case Info
This application is a division, of application Ser. No. 07/896,379, filed Jun. 10, 1992, now U.S. Pat. No. 5,264,047 which is a continuation-in-part of U.S. Ser. No. 07/731,512, filed Jul. 17, 1991, now abandoned.
US Referenced Citations (11)
Divisions (1)
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Number |
Date |
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Parent |
896379 |
Jun 1992 |
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Continuation in Parts (1)
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731512 |
Jul 1991 |
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