Aqueous lubricant and surface conditioner for formed metal surfaces
AssigneeHenkel Corporation
InventorsJames P. Bershas, Timm L. Kelly, Gary L. Rochfort, Henry A. Rossmaier
Life of this patent
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Abstract
A lubricant and surface conditioner for formed metal surfaces, particularly aluminum and tin beverage containers, reduces the coefficient of static friction of said metal surfaces and enables drying said metal surfaces at a lower temperature. The conditioner includes a water-soluble organic material selected from amine oxides and quaternary ammonium salts, fluozirconate, fluohafnate, or fluotitanate ion, and preferably also phosphate and nitrate ions. Good resistance to damaging the friction reducing effect by overheating and to staining of the domes of treated containers during pasteurization can be achieved.
Claims15
A process comprising steps of cleaning an aluminum can with an aqueous acidic or alkaline cleaning solution, drying the cleaned can, and subsequently conveying the cleaned and dried can via automatic conveying equipment to a location where it is lacquered or decorated by printing or both, wherein the improvement comprises contacting at least one exterior surface of said aluminum can, prior to the last drying of said exterior surface before automatic conveying, with a lubricant and surface conditioner forming composition consisting essentially of water and:
- (A) a component selected from the group consisting of quaternary ammonium salt and amine oxide surfactants conforming to general formula I:
- ##STR5## where R.sup.1 is a monovalent aliphatic moiety, which may be saturated or unsaturated and contains from 8 to 22 carbon atoms;
- each of R.sup.2 and R.sup.3 is a monovalent moiety independently selected from the group consisting of (i) alkyl and hydroxyalkyl moieties having from 1 to 8 carbon atoms and (ii) aryl and arylalkyl moieties having from 6 to 10 carbon atoms;
- R.sup.4 is a monovalent moiety selected from the same group as for R.sup.2 and R.sup.3 plus the --O.sup.- moiety;
- X.sup.- is a monovalent anion or monovalent fraction of an anion with a valence higher than 1;
- and a=0 if R.sup.4 is --O.sup.- and =1 if R.sup.4 is not --O.sup.- ;
- and
- (B) a component of complex fluoride anions.
Dependencies are inferred from the claim text.