Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1986-11-07
1988-05-24
Lieberman, Paul
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
252156, 25217421, 25217422, 252525, 252527, 252321, 252358, C11D 714
Patent
active
047464534
ABSTRACT:
A cleaning composition for electrolytically cleaning cold-rolled steelwork includes sodium or potassium hydroxide, sodium or potassium orthosilicate and a combination of non-ionic surface-active agents; said non-ionic surface active agent includes a major amount of lauryl polyethylene glycol ether with 10 moles of average ethylene oxide, and a minor amount of nonyl phenyl polyethylene glycol ether with 1 mole of average ethylene oxide. By virtue of adding two non-ionic surface active agents in such an amount ratio, an excellent defoaming and cleaning effect can be obtained. Inclusion of hexamethylenetetramine in the cleaning composition can inhibit the deposition of ferric oxide and silicone oxide during electrocleaning which normally gives rise to the problem of light fault.
REFERENCES:
patent: 3282843 (1966-11-01), Alburger
patent: 4048121 (1977-09-01), Chang
patent: 4093566 (1978-06-01), MacNamara
patent: 4349448 (1982-09-01), Steele
patent: 4382825 (1983-05-01), McCready
patent: 4390465 (1983-06-01), Spekman
patent: 4597888 (1986-07-01), King
Chen Pao-Yuan
Shen Sen-Thann
Sun Ping-Cherng
China Steel Corporation
Lieberman Paul
Rodriguez Isabelle
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