MXPA97003638A - Superficial cleaning and conditioning of metal form surfaces - Google Patents

Abstract

The present invention relates to a lubricant and surface conditioner for formed surfaces, particularly drink containers, reduces the coefficient of static friction of metal surfaces and allows the drying of metal surfaces at a lower temperature. An aqueous composition for forming the conditioner by contacting metal surfaces includes a water-soluble organic material selected from a phosphate, alcohol, fatty acid ester including mono-, di-, tri-, and polyacids; fatty acid derivatives such as salts , acids, hydroxy, amides, esters, esters and derivatives thereof, and mixtures thereof and at least one of the elements selected from zirconium, titanium, cerium, aluminum, iron, tin, vanadium, tantalum, niobium, molybdenum, tungsten and hafnium in metallic or ionic form. In order to prevent the formation of silt in the aqueous lubricant forming composition and surface conditioner, the composition should contain as little as possible of materials containing phenanthrene rings, such as conventional surfactants made by ethoxylation of rosin. In order to ensure the minimization of said surfactants in the aqueous lubricant and surface conditioner forming composition, surfactants containing phenanthrene rings should also be avoided or minimized in previous cleaning steps.

Description

SURFACE CLEANING AND CONDITIONING OF ME SURFACES SUCH FORMED REFERENCE TO RELATED REQUESTS This application is a continuation in part of the copending application Serial No. 126,143, filed on September 23, 1993, which was a continuation of Application No. d Series 910,483, filed on July 8, 1992 and now abandon that it was a continuation in part of co-pending application N of Series 785,635, filed on October 31, 1991 and now abandoned, which was a continuation of application No. Seri 521,219 filed on May 8, 1990, now U.S. Patent No. 5,080,814, which was a continuation of application Serial No. 395,620 filed on August 18, 1989, now United States Patent No. 4,944,889, which was a continuation in part of the serial No. 07 / 057,129, filed on June 19, 1987, now U.S. Patent No. 4,859,351. The complete exitions of all the aforementioned patents, to the extent not inconsistent with any explicit statement hereof, are hereby incorporated by reference.

BACKGROUND OF THE INVENTION Field of the Invention This invention relates to a surface cleaner and conditioner for metal surfaces formed, and particularly, with said lubricant and surface conditioner which improves the mobility of aluminum cans without adversely affecting the adhesion of paints. or lacquers applied thereto, and also allows reducing the temperature of the drying oven required to dry said surfaces. Even more particularly, this invention relates to a combination of cleaning and said surface conditioning which minimizes the formation of l or other undesirable phase separation during the surface conditioning process when the surface conditioner contains metallic elements such as part of its chemical composition.

Discussion of Related Art Aluminum cans are commonly used as receivers for a wide variety of products. After its manufacture, the Aluminum Dowels are typically washed with acidic cleaners to remove aluminum fines and other contaminants from them. Recently, environmental considerations and the possibility that the residues remaining on the cans after the acidic cleaning could influence the taste of beverages packaged in the cans has led to an interest in alkaline cleaning to eliminate such fines and contaminants. However, the treatment of aluminum votes usually results in differential regimes of metal surface recorded on the outside versus on the inside of the boats. For example, the optimum conditions required to achieve a surface of fine-free aluminum in the interior of the cans usually leads to problems of boat mobility on conveyors due to the increased roughness of the outer surface of the boat. These problems of aluminum canister mobility are particularly evident when it comes to transporting the cans through simple spinners and printers. In this way, a need has arisen in the aluminum can manufacturing industry to modify the coefficient of static friction on the outer and inner surfaces of the cans to improve their mobility without adversely affecting the adhesion of paints or lacquers applied to the cans. same. The reason for improving the mobility of aluminum boats is the general trend in this manufacturing industry to increase production without additional capital investment when building new plants. The increased production demand is requiring that boat manufacturers increase their printing line speeds to produce more boats per unit of time. For example, the maximum speed at which aluminum cans, in the absence of any treatment to reduce its surface friction coefficient, can be passed through a printing station is typically the average of approximately 1150 btes per minute, while it is desired that said regime be incrusted to around 1800 to 2000 cans per minute or even higher. Aluminum, completely clean, either by acidic or alkaline cleaners, in general, are characterized by high surface roughness, and thus have a high coefficient of static friction. This property prevents the flow of cans through simple spinners and printers when it comes to increasing their line speed. As a result, there are problems of lack of power to the printer, frequent clutter, time of interruption and loss of production, as well as high rates of damage to the cans. Another consideration in modifying the superlative properties of aluminum cans is the importance that such modi cation may interfere with or adversely affect the ability of the can to be printed when it is passed to a printing or labeling station. For example, after cleaning the cards, labels can be printed on their outer surface, lacquers can be sprayed on their inner surface. In such a case the adhesion of the paints and lacquers is of main importance. additionally, the current trend in the boat manufacturing industry is directed towards using thinner gauges of aluminum metal material. The reduction of caliper of aluminum can metal material has caused a production problem where, after washing, the cans require a lower drying oven temperature in order to pass the pressure quality control test. However, reducing the temperature of the drying oven resulted in the cans not being sufficiently dry when they reached the printing station, and caused labeling ink stains and a higher level of can rejects. Thus, it would be desirable to provide a means to improve the mobility of aluminum cans through simple adjustments and printers to increase production, reduce line stacks, minimize the time of in terruption, reduce damage to cans, improve the ink laying and allow to reduce the temperature of the drying oven of boats the fords. Accordingly, an object of this invention is to provide said means for improving the mobility of aluminum boats and overcome the problems noted above. In current commercial practice most widely used, when smaller for large-scale operations, aluminum cans are typically subjected to a succession of six washing and rinsing operations as described in Table A below. (Contact with running water at room temperature before any of the stages in Table A was also occasionally used.; when used, this stage is often called a "vestibule" to the numbered stages.) Table A. NO. OF STAGE ACTION ON SURFACE DURING THE STAGE 1 Preli piece Aqueous Acid 2 Cleaning Acid Aqueous and with Agent Tensioactiv 3 Rinsing with Running Water 4 Cleaning Later Acid Soft, Conversion Coating, or Rinsing with Running Water 5 Rinsing with Running Water 6 Rinsing with DI Water "DI") is currently possible producing a can that is wholly mobile and to which subsequent inks and / or lacquers having adequate adhesion are applied using appropriate surfactants either in Step 4 or Step 6 as noted above. Preferred treatments for use in Step 4 as described above have been developed and described in US Patents 5,030,323 and 5,064,500. With these treatments, a metallic element (not necessarily or even usually elemental form) is incorporated in the surface conditioning layer and lubricant formed. Experience with the prolonged practical use of lubricant and surface conditioner forming treatments that incorporate metal into the surface forming layer has revealed that they are susceptible to the development of at least one phase of separate impurity, commonly referred to as "silt" or similar term. . The silt is usually sticky, so small particles of it stick easily to the containers being treated, and if they do they can cause an undesirable phenomenon called "metal exposure", a failure of the subsequently applied interior sanitary lacquer. to completely isolate the beverage product contained in the aluminum can from contact with the body of the metal can. Therefore, if a sufficient amount of silt is formed, it must be eliminated before continuing the pot conditioning. Due to the stickiness of the silt, it is difficult to remove satisfactorily, so that minimization, and if possible the prevention of silt formation is one of the objects of this invention.

DESCRIPTION OF THE INVENTION Other than in the claims and the operation examples, or where otherwise expressly indicated, all the numbers expressing quantities of ingredients or reaction conditions used herein must be understood as modified in all For example, the term "approximate" in describing the broadest scope of the invention, the practice within numerical limits, however, is generally preferred, and, unless otherwise specified, all descriptions of components of compositions by percentages, "parts", or the like refer to weight or component of the component compared to the total In accordance with this invention, it has been found that a lubricant and surface conditioner applied to aluminum cans after washing improves its mobility and, in a preferred fashion, improves its water film drainage and man-made evaporation characteristics. It was to allow to reduce the temperature of a drying oven from about 14Q to about 385 without having any adverse effect on the label printing process. The lubricant and surface conditioner reduces the coefficient of static friction on the outer surface of the cans, allowing a substantial increase in line speeds of production, and in addition, provides a noticeable improvement in the water film drainage and evaporation regime that resulted in savings due to lower energy demands while the quality control requirements are met. More particularly, in accordance with a preferred embodiment of this invention, it has been found that the application of an organic film aerated to the outer surface of aluminum beams serves as a lubricant which induces thereto a lower coefficient of static friction, which consequently, it provides improved mobility to the boats, and also increases the rate at which the boats can dry and still pass the pressure test of the column's resistance control. It has also been found that the degree of mobility improves and the rate of drying of the cans depends on the thickness or amount of the organic film, or on the chemical nature of the material applied to the cans. The lubricant and surface conditioner for aluminum cans according to this invention, for example, can be selected from water-soluble alkoxylated surfactants such as organic phosphate esters.; alcohols; fatty acids including mono-, di-, tri- and poly-acids; deriving fatty acids such as salts, hydroxy acids, amides, ethers, ethers and derivatives thereof; and mixtures of the same The lubricant and surface conditioner for aluminum cans according to this invention in one embodiment preferably comprises a water-soluble derivative of a saturated fatty acid, such as an ethoxylated stearic acid or an ethoxylated isostearic acid, or alkali metal salts of the same, such as ioxyethylated DOI stearate and polyoxyethylstorate side. Alternatively, the lubricant and surface conditioner for aluminum cans may comprise a water-soluble alcohol having at least about 4 carbon atoms and may contain up to about 50 moles of ethyl oxide. Excellent results have been obtained when the alcohol contains polyoxyethylated oleyl alcohol containing an average of about 20 moles of ethylene oxide per mole of alcohol. In another preferred aspect of this invention, the organic material used to form a film on an aluminum can after alkaline or acid cleaning and before the last drying of the outer surface before transport, purchase of a soluble organic material. in water selected from a phosphate ester, an alcohol, fatty acids including mono-di-, tri-, and poly-fatty acid derivatives including salts, hydroxy acids, amides, alcohols, esters, ethers and derivatives two of them and mixtures thereof. This organic material is preferably part of an aqueous solution that coats an appropriate water-soluble organic material to form a film on the cleaned aluminum to provide the surface after drying with a coefficient of static friction no greater than 1.5 and which it is less than that which would be obtained on a boat surface of the same type without said film coating. In one embodiment of the invention, the solubility in water can be imparted to organic materials by alkoxylation, preferably ethoxylation, propoxylation or mixture thereof. However, the non-alkoxylated phosphate esters are also useful in the present invention, especially free acid which contains or neutralized with mono- and diesters of phosphoric acid with various alcohols. The specific plso axes include Tryfac (R) 5573 Phosphate Ester, an ester containing free acid available from Henkel Corp .; and Triton (R) H55, Triton (R) H-66 and Triton (R) 0S-44, all available from Union Carbide Corporation. Preferred non-ethoxylated alcohols include the following classes of alcohols: Suitable hydrocarbon alcohols and their esters with inorganic acids include water-soluble compounds containing from 3 to about 20 carbons per molecule. The examples e. Specifics include sodium lauryl sulfates such as Duponol (RP AQ and Duponol (R) QC and Duponol (R) C available from Witco Corp. and proprietary sodium alkyl sulfonates such as Alkanol (R) 189S available from EI du Pont de Nemours &Co. Suitable polyhydric alcohols include aliphatic or arylalkyl polyhydric alcohols containing two or more hydroxyl groups, The specific examples include glycerin, sorbitol, mannitol, xanthan gum, hexyl glycol, glu conic acid, gluconate, glucoheptonate salts, pentaerythritol and derivatives thereof, sugars, and alkylpolycosides, such as APG (R) 300 and APG (R) 325, available from Henkel Corp. Especially preferred polyhydric alcohols include tr glycerol, especially glycerin or fatty acid esters thereof such as triglycerides of castor oil In accordance with the present invention, it has been discovered that by employing triglycerides of oil of The ricino alkoxylate, especially ethoxylated, as lubricants and surface conditioners results in further improvements in can mobility especially when the operation of the pot line is interrupted causing the cans to be exposed to elevated temperatures for extended periods. Accordingly, the especially preferred materials include Trylox (R) 5900, Trylox (R) 5902, Trylox (R) 5904, Trylox (R) 5906, Trylox (R) 5907, Trylox (R) 5909, Trylox (R) 5918, and hydrogenated castor oil derivatives such as Trylox (R) 5921 and Trylox (R) 5922, all available from Henkel Corp. Preferred fatty acids include butyric, valeric, caproic, caprylic, capric, pelargonic, lauric, myristic, palmitic, oleic, stearic, linoleic and ricinoleic; the malonic, succinic, glutaric, adipic, maleic, tartaric, gluconic and dimer acids; and salts of any of these; salts of i-inodipropionate such as Amphoteric N and A photeric 400 available from exxon Chemical Co .; sulfosucci derivatives such as Texapon (R) SH-135 Special and Texapon (R) SB-3, available from Henkel Corp .; citric, nitrilotriacetic and trichloric acids; Cheelox (R) HEEDTA, N- (hydroxyeti 1) -eti lendiminatria tato, available from GAF Che icaiS Copr. Preferred amides generally include substituted amides or -amides of carboxylic acids having four twenty carbons. Specific examples are Alkamide (R) L20 lauric onoethanolamide, Alkamide (R) L7DE myristic lauric alkanolamide, Alkamide (R) DS 280 / s stearic diethanolamide, Alkamide (R) CD coconut diethanolamide, Alkamide (R) DIN 100 lauric nolamide / 1 inoléica, Alkamide (R) DIN 295 / s dietary linnolamid, Alkamide (R) DL 203 lauric diethanolamide, all available from Rhone-Poulenc; Monamid (R) 150M ethanolamide myristi Monamid (R) 150 CS ethanolamide caprica, Monamid (R) 150- I S istan-isostearic amide, all available from Mona Industries Inc .; Ethomid (R) HT / 23 and Ethomid (R) HT60 hydrogenated polyoxyethylated keto amines, available from Akzo Chemicals Inc. Preferred anionic organic derivatives generally include sulfate and sulfonate derivatives of fatty acids q include sulfate and sulfonate derivatives of alcohols naturally and synthetically derived, acids and natural products. Specific examples include: dodecylbenzene sulphonates such as Cowfax (R) 2AL, Dowfax (R) 2A0, Dowfax (R) 3B0 and Fowfax (R) 3B2, all available from Dow Chemical Co .; Lomar (R) LS condensed naphthalenesulfonic acid, potassium salt available from Henk Corp .; sulfosuccinate derivatives such as Monamate (R) CPA sodium sulfosuccinate of a modified ida alkanola, Monamate (R) LA-100 lauryl disodium sulfosuccinate, all available from Mona Industries, Triton (R) GR-5M dioctis isulfosuccinate sodium, available from Union Carbide Chemical and Plastics Co .; Varsulf (R) SBFA 30, sulfosuccinate of ethyl alcohol, Farsulf (R) SBL 203, sulfosuccinate of fatty acid alkanolamide, Varsulf (R) S1333, sulfosuccinate of monoethanolamide ric noléica, all available from Sherex Chemical Co., Inc Another preferred group of organic materials include alkoxylated water soluble materials, preferably ethoxylated, propoxylated or mixed ethoxylated and propoxylated, most preferably ethoxylated, and non-ethoxylated organic materials are donated from amine salts of fatty acids including mono-, di-, tri-, and poly-acids, fatty acids of a, N-oxides of fatty amine and quaternary salts and polymers soluble in water. Preferred amine salts of fatty acids include ammonium, quaternary ammonium, phosphonium and alkali metal salts, fatty acids and derivatives thereof containing up to 50 μl of alkylene oxide in either or both cationic or anionic species. Specific examples include Amphoteric N Amphoteric 400 sodium salts of i-inodipropionate, available from Exxon Chemical Co .; Deriphat (R) 154 N-ce beta disodium iminodipropionate and Deriphat (R) 160, N-lauryl beta disodium iminodipropionate, available from Henkel Corp. Preferred amino acids include alpha and beta amino acids and diacids and salts thereof, including alkylalkoxy iminodipropionic acids and their salts and sarcosine derivatives their salts. Specific examples include Apneen (R) Z, N-coco-beta-aminobutyric acid, available from Akzo Chemicals Inc .; Amphoteric N, Amphoteric 400, Exxon Chemical Co .; sarcosine (N meti lgl icina); hydroxyethyl lgin; Hamposyl (RP TL-40 sarcosin to triethanolamine aluroyl, Ha posyl (RP 0 sarcosinate de oe lo, Hamposyl (R) AL-30 sarcosinate a oniolauroi lo, Hamposyl (L sarcosinate lauroil and Hamposyl (RP C sarcosinate de cocoil all available from R.R. Grace &Co. Preferred amine N-oxides include oxides of a na wherein at least one alkyl substiuent contains at least three carbons and up to 20 carbons, speci fi c examples include Aromox (RP C / 12 Sodium of bi s- (2-hydroxiet i 1) cocoal quilamina, Aromox (R) T / 12 bis- (2-hydroxyethyl) 1 oxide) baboalkylamine, Armonox (R) DMC dimethyl oxide lcocoalkyl sheet, Aromox (R DMHT Sodium dimethyl hydrochloric acid sheet, Aromox (R) DM- 16 dimethylamide lahexide lalqui oxide, all available from Akzo Chemicals Inc.; and Tomah (R) AO-14-2 and Tomah (R) AO-728 available from Exxon Chemical Co. Preferred quaternary salts include quaternary ammonium derivatives of fatty amines containing at least one substituent containing from 12 to 20 atoms. carbon and zero to 50 moles of ethylene oxide and / or zero to 15 moles of pro pylene oxide, wherein the counter ion consists of halide, sulfate, nitrate, carboxylate, alkyl or aryl sulfate, alkyl or arylsulphonate derived from the same. Specific examples include Arquad (R) 12-37W docei ltrimet i 1 ammonium chloride, Arquad (R) 18 50 cotadecyltrimethylammonium chloride, Arquad (R) 210-50 didecyldimethyl lamium chloride, Arquad (R) 218- 100 chloro dioxide chloride, Arquad (R) 316 (W) trihexadecyl ether 1-onium chloride, Arquad (R) B-100 benzylimethyl chloride 1 (C12_? A) alk and monio, Etoquad (R) ) C / 12 cocometi chloride 1 (P0E (2)) ammonium, Ethoquad (R) C / 25 cocometi chloride 1 (P0E (15)) ammonium, etoquad (C / 12 nitrate salt, Ethoquad (R) T / 13 Acétate, tris (hydroxyeti 1) bait-alkylammonium acetate, Duoqaud (R) T-50 NNN1 dichloride, N ', N'-pentamethyl-N-bait-1,3-diammonium, Propoquad (R) 2HT / 1 di (hydrogenated ceboalqui 1) chloride (2-hydroxy-2-methyl-1) methylammonium, Propoquad (R) T / 12 ceboalqui methyl sulfate 1-methyl-1-bis- (2-hydroxy-2-methyl) leti 1) ammonium, available from Akzo Chemicals Inc., Monaquat (R) P-TS stearamidopropi 1 pg-dimonium chloride, Phosphate, available from Mona Industires, Inc .; Chemquat (R) 12-33 1-Atriumtrimet-1-Ammonium Chloride, Chemquat (R) 16-50 Ceti-l-Ietimmonium Chloride, available from Chemax Inc; and tetraethyl ammonium pelarqonate, alurate, myristate, oleate, is tearate or isostearate. Preferred water-soluble polymers include polymers and heteropolymers of ethylene oxide, propyl oxide, butylene oxide, acrylic acid and its derivatives, methyl acid and its derivatives, venylphenol and its derivatives and nyl alcohol. Specific examples include Carbowax (R) 200, Carbowax (R) 600, Carbowax (R) 900, Carbowax (R) 1450, Carbowas (R) 3350, Carbowax (R) 8000, and Compound 20M, all available from Union Carbide Corp.; Pluronic (R) L61, Pluronic (R) L81, Pluronic (R) 31R1, Pluronic (R) 25R2, Tetronic (R) 304, Tetroni (R) 701, Tetronic (R) 908, Tetronic (R) 90R4 and Tetronic ( R) 150 all available from GASF Wyandotte Corp .; Acusol (R) 410N sodium salt of polyacrylic acid, Acusol (R) 445 polyacrylic acid, Acusol (R) 460ND sodium salt of copolymer of meleic acid / olefin, and Acusol (R) 479N Sodium salt of copolymer of acidic acrylic acid maleic all available from Rohm & Haas Company; and adducts of N-methyglucane of polyvinylphenol and N-methylene nolamine adducts of polyvinylphenol. Additional improvements are achieved by combining with the organic materials listed above an inorganic material selected from metallic or ionic zirconium, titanium, cerium, aluminum, iron, vanadium, tantalum, niobium, molybdenum, tungsten, hafnium or tin to produce a film combining one or more of these metals with one or more of the organic materials described above. A thin film having a coefficient of static friction is produced which is not more than 1.5 and is smaller than the coefficient without said film, thus improving the speed of the boat in high speed transport without interfering with the subsequent lacquering. , another painting, printing or other similar decorating of the containers. This type of lubricant and surface conditioner is especially preferred when used in Step 4 as defined above. The technique of incorporating such inorganic materials is described, in particular detail with reference to zirconium containing materials, in U.S. Patents 5,030.3 of July 9, 1991 and 5,064,500 of November 12, 1991, the entire exposures of the which, to the degree not inconsistent with any explicit statement herein, are hereby incorporated by reference. The substitution of other metallic materials by those explicitly taught in one of these patents is within the reach of those experienced in the field.

In a further preferred embodiment of the process of the present invention, in order to provide improved water solubility, especially for the non-ethoxylated organic materials described herein, and to produce an appropriate film on the can surface having a coefficient of Static friction not greater than 1.5 after drying, a lubricant and surface conditioner are used which form a composition which includes one or more surfactants, preferably alkoxylate two and more preferably ethoxylated, together with said non-stoichiometric material or gum to make contact with the bo surface cleaned before final drying and transport. Preferred surfactants include ethoxylated and non-ethoxylated sulphated or sulphonated fatty alcohols, such as aluryl and coconut alcohols. Suitable are a broad class of anionic, nonionic, cationic or amphoteric surfactants. The alkyl polyols and alkyl groups such as C pol-CQ alkyl polyglycosides having average polymerization degrees between 1.2 and 2.0 are also suitable. Other classes of suitable surfactants in combination are nonyl ethoxylated and octylphenols containing from 1.5 to 100 moles of ethylene oxide, preferably a nonylphonol condensed with from 6 to 50 moles of ethylene oxide such as Igepal (R) C0-887. available from Rhone-Poulenc; nickel / aryl polyethers, for example, Triton (R) DF-16; and phosphat esters of which Triton (R) H-66 and Triton (R) QS-44 are examples, t two Triton (R) products being available from Union Carbide Co., and Etox (R) 2684 and Ethfac ( R) 136, both available from Etho Chemicals Inc., are representative examples; polo ethoxylated derivatives and / or pol ipropoxy sides of linear and branched alcohols and derivatives thereof, such as, for example, Trycol (R) 6720 Henkel Corp.), Surfonic (R) LF-17 (Huntsman Chemical Co.) and Antarox (R) LF-330 (Rhone Poulenc); sulphonated derivatives of linear or branched aliphatic ale holes, for example, neodol (R) 25-3S (Shell Chemical Co.); sulphonated aryl derivatives, by pious axis Dyasulf (R) 9268-A, Dyasulf (R) C-70, Lomar (R) D (Henkel Corp.) and Dowfax (R) 2A1 (Dow Chemical Co.); and ethylene oxide copolymers of propylene oxide, for example, Pluronic (R) L-6 Pluronic (R) 81, Pluronic (R) 31R1, Tetronic (R) 701, Tetronic (R) 90R4 and Tetronic (R) 150R1, all available from BASF Corp. Surprisingly, it has been found that the surface active agents containing a phenanthrene ring structure, which is to be understood herein as being contained not only by phenanthrene itself but in molecules made by hydrogenating phenanthrene to any degree not sufficient to break any of the three rings present in phenanthrene, are unfortunate constituents of the lubricant and surface conditioner forming the composition, at least if this composition also contains any inorganic material selected from metallic or ionic zirconium, titanium, cerium, aluminum , iron, vanadium, ta talium, niobium, molybdenum, tugstene, hafnium or tin as described in the foregoing. Sludge formation is greatly increased when said surfactants are present together with any of these inorganic materials. It has also been found that the tendency to silt formation can be profitably exploited in a laboratory, without the need for actual potting, by deliberately adding such lands as aluminum fines, species containing soluble aluminum, drawing oils and surfactant cleaning agents to the lubricant and surface conditioner forming the composition to be tested for resistance to silt formation, the deliberately soiled composition is then passed through a spraying step repeatedly and note if any dried floccule is visible in the foam head that is formed in the container to which the spray is drained. The presence or absence of dry floccule in this test indicates, with at least approximate quantitative correlation, if silt is likely to become a problem when operating the formed composition of lubricant and surface conditioner tested in this way, and if so, the degree of silting likely to be observed. in practical use. Surfactants with a phenanthrene ring structure, especially abietate, hydrogenated abietate, and alkoxylated -abietate of natural turpentine resin surfactants, are very commonly used now in the container processing cleaning et, before making co-tact with any lubricant forming composition and surface conditioner, for example, in Step 2 as shown in Table A. While the transfer of part of the cleaning surfactants towards the compositions used for later stages of the treatment is not can be completely avoided in the processing of high-speed and high-volume containers, these cleaning surfactants should only be used with care and in limited quantities if they are used at any stage of processing before a coating and forming composition. surface conditioner that includes inorganic material selected from zirconium metal co or ion, titanium, cerium, aluminum, iron, vanadium, tantalum, niobium, molybdenum, tungsten hafnium or tin as described above. More specifically, it is preferred, preferably incidentally, in the order provided and independently of each related composition, that (i) any lubricant-forming composition and surface conditioner containing inorganic material selected from metallic or ionic zirconium, titanium, cerium , aluminum, iron, vanadium, tanalium, niobium, moli deno, tugstene, hafnium or tin as described above and (ii) any cleaning or rinsing composition that comes into contact with the containers is provided with a layer of lubricant and Surface conditioner before the containers come into contact with the lubricant and surface conditioner forming composition, must not contain more than 5, 4, 3, 1, 0.5, 0.4, 0.3, 0.2, 0.1, 0.05, 0.04, 0.03, 0.02, 0.01, 0.005, 0.004, 0.003, 0.002, 0.001, 0.0005, 0.0004, 0.0003, 0.0002, 0.0001, 0.00005, 0.00004, 0.00003, 0.00002 or 0.00001% in total d carbon atoms that are part of a ring structure of nantrene as defined above. The inimization of concentration of phenanthrene ring-containing compounds and particularly advantageous in connection with the use of lubricant and surface conditioner forming compositions is taught in U.S. Patents 5,030,323 and 50,064.5 Nonionic surfactants containing Phenanthrene anion have been used extensively during the last several years to clean aluminum containers because they are highly effective in eliminating some of the kinds of organic soils frequently found in such containers. However, it has now been found that the alkylphenol-based nonionic surfactants can successfully replace the phenanthrene ring-containing surfactants for this purpose, and the alkylphenol base surfactants do not promote the formation of silt in the forming compositions. lugricant and surface conditioner as the surfactants containing fenne ring. A particularly preferred combination of surfactants for a cleaning step preceding a metal containing lubricant-forming compositions and surface conditioning comprises, most preferably, is essential to, or even more preferably consists of: (A) an agent component nonionic surfactants selected from the group consisting of surfactants corresponding to the chemical formula: where a is 0 or 1; R represents an alkyi fraction that can be branched or unbranched and saturated or unsaturated but does not include any aryl group and the su one of the plus the number of carbon atoms in R is from 1 to 22, more preferably from 12-20, or still more p. 14-18; n is an integer that is less than 2 and is not greater than 4, more preferably not more than 3; more preferably 2 and can be different from one group CnH00n0 to another in the same molecule, and J b is an integer, the value or values of b being selected so that the equilibrium of hydrof i lo-l ipof i lo ( "HLB of the total component is, preferably increasing in the order provided, not less than 8, 10, 10.5, 11.0, 11.3, 11.5, 11.7, 11.8, 11.9, 12.0 or 12.1 and is independently, preferably increasing the den provided , not more than 20, 18, 16, 15, 14, 13.7 13.5, 13.1, 13.1 12.9, 12.8, 12.7, 12.6, 12.5, 12.4 or 12.3, and (B) a component of nonionic surfactants selected from group consisting of surfactants corresponding to the chemical formula R'-f-C H 0) H, wherein R 'represents an alkyl moiety that can be branched or unbranched and saturated or unsaturated but does not include any aryl group having 4 - 16, more preferably 6 - 14, still more preferably 8 - 10, more preferably rida 9, carbon atoms; f represents a phenylene group; n is an integer that is at least 2 and not more than 4, more preferably not greater than 3, more preferably 2; and c is an integer, the value or value of c being selected so that the HLB of the total component is, preferably increasing in the order given, not less than 9, 10.0, 10.6, 11.2, 11.7, 12.2, 12.5, 12.7, 12.9, 13.0, 13.1, 13.2 or 13.3 independently is, preferably increasing in the order provided, not more than 21, 19, 17, 16, 15, 14.7, 14.5, 14.3, 14.1, 13.9, 13.8, 13.7, 13.6 , or 13.5 Independently, the ratio of component (A) to co-component (B) in the mixture is preferably, with an incriminating preference in the order provided, not less than 0.1, 0.2, 0.3, 014, 0.5, 0.55, 0.59 , 0.63, 0.60, 0.62, 0.64, 0.66, 0.67, 0.68, 0.69, 0.70 6 0.71 and independently of preference is, with increasing preference in the proportionate order, not greater than 10 5, 4, 3, 2, 1.5, 1.2 1.1, 1.0, 0.9, 0.85, 0.83, 0.81, 0.80, 0.79 .78, 0.77, 0.76, 0.75, 0.74, 0.73 or 0.72. The lubricant and surface conditioner for aluminum cans according to this invention may comprise a phosphate acid ester or preferably an ethoxylated alkyl alcohol phosphate ester. Said phosphate esters are commercially available as Gafac (R) PE 510 from GAF Corporation, ayne, NJ, and as Ethfac (R) 136 and 161 and Ethox 2684 from Ethox Chemicals, Inc., Greeneville, SC. In general, organic phosphate esters can comprise alkyl and aryl phosphate esters with and without ethoxylation. The lubricant and surface conditioner forming the composition for aluminum cans can be applied to the cans during their wash cycle, during one of their treatment cycles such as cleaning or conversion coating, during one of their water rinse cycles. , or during its final rinse cycle in water. In addition, the lubricant and conditioner can be applied to the cans after their cycle in the final water, that is, before drying in the oven, or after drying in the oven, by applying fine mist from a solution. of non-flammable solvent of water or other vol. It has been found that the surface lubricant and conditioner is capable of being deposited on the aluminum surface of the cans to be proportional to the desired characteristics. The lubricant and surface conditioner can be applied sprayed and reacted with the aluminum surface through which sorption or physiosorption to provide it with the desired film. Usually, in the process of cleaning the cans, after the cans have been washed, they are typically exposed to an acidic water rinse. In accordance with this invention, the cans may subsequently be treated with a lubricant and surface conditioner comprising an anionic surfactant such as a phosphate acid ester. In such a case, the pH of the treatment system is important and should generally be acidic, ie between about 1 and about 6.5, preferably between about 2.5 and about 5. If the cans are not treated with the lubricant and conditioner After the rinsing with acidic water, the canisters are often exposed to rinsing under running water and then rinsing with deionized water. In such a case, the rinse solution with deionized water is intended to contain the lubricant-forming and surface-conditioning composition of this invention, which may comprise a non-ionic surfactant selected from the aforementioned polyoxyethylene alcohols or polyoxyethylated fatty acids, or any other suitable materials as described above. After said treatment, the cans can be passed to a drying oven before further processing.

The amount of lubricant and surface conditioner to be applied to the cans should be sufficient to reduce the coefficient of static friction on the outer surface of the cans to a value of about 1.5 or less, and preferably at a value of about 1 or less. Generally speaking, this amount must be of the order of approximate ? 2 te 3 mg / m to about 60 mg / m of lubricant and surface conditioning on the outer surface of the cans. Another embodiment of the present invention comprises the application of the technology described herein to provide lubricants and surface conditioners for tin cans especially to assist in the drainage and drying of said cans. The compositions and methods described herein are appropriate for that purpose. For a more complete appreciation of the invention, reference may be made to the following examples, which are intended to be merely descriptive, illustrative and not limiting as to the scope of the invention.

EXAMPLE I This example illustrates the amount of lubricant and aluminum canister surface conditioner necessary to improve the mobility of the cans through the tracks and printing stations of an industrial can manufacturing plant, and also shows that the lubricant and surface conditioner does not have an adverse effect on the adhesion of labels printed on the outer surface as well as of lacquers sprayed on the interior surface of the cans. Uncleaned aluminum cans obtained from an industrial boat manufacturer were cleaned by washing with an alkaline cleaner available from Parker Amchem Division, Henkel Corporation, Madison Heights, MI, using the company's Ridoline (R) 3060/306 process. . The cans were washed in a laboratory mini-vat processing 14 cans at a time. The cans were treated with different amounts of lubricant and surface conditioner in the final rinse stage of the washing machine and then dried in an oven. The lubricant and surface conditioner comprised approximately a 10% active concentrate of polyoxyethylated isosteat, an ethoxylated nonionic surfactant, MR available under the tradename Ethox MI-14 from Ethox Chem cals, Inc., Greenville, SC. The treated cans were returned to the boat manufacturer for line speed and print speed evaluations. The printed boats were divided into two groups, each consisting of 4 to 6 boats. All were subjected for 20 minutes to one of the following adhesion test solutions: Test Solution: 1% Joy (R) (a commercial liquid dishwashing detergent, Procter and Gamble Co.) solution in 3: 1 of Deionized water: running water at a temperature of 82 ° C. Test solution B: 1% Joy (R) detergent solution in deionized water at a temperature of 100 ° C.

After separating the printed cans from the adhesion test solution, each canister was marked using a sharp-pointed object to expose aluminum lines that were shown through the paint or lacquer, and tested for paint adhesion. This test included spraying Scotch (R) No. 610 Clear Cintment firmly on the marked area and then pulling the tape against it with a fast pulling motion so that the tape separated from the marked area. The results of the test were classified as follows: 10, perfect, when the tape did not peel off any surface paint; 8, acceptable; and 0, fail to such. The cans were visually examined for any print or lacquer collection signs. In addition, the cans were evaluated for their coefficient of static friction using a laboratory static friction tester. This device measures the static friction associated with the surface characteristics of aluminum cans. This is done using a ramp that was raised through a 90Q arc using a constant speed motor, a reel and a cable attached to the freely oscillating end of the ramp. A bra secured to the bottom of the ramp is used to hold 2 boats in a horizl position approximately 12.7 millimeters apart with the domes facing the fixed end of the ramp. A third boat is laid over the 2 boats with the dome facing the free swing end of the ramp, and the edges of all 3 boats are aligned so that they are uniform with each other.

As the ramp begins to move through its arc, a timer is automatically activated. When the ramp reaches the angle at which the third boat slides freely from the 2 lower boats, a photoelectric switch turns off the timer. It is this moment, registered in seconds, that is given mine commonly as "time of sliding". The coefficient of static friction is equal to the tangent of the angle swept by the ramp at the moment when the can begins to move. The average values for the adhesion test and static friction coefficient, in their evaluation reusltados, are summarized in Table 1 below: Table 1 No. of Concentrate of Lu Adhesion Evaluation Coefficients Brilliant Test and Fri ctionator SuperfiSoljj OSW ISW Static Id. { % in nominal volume) Control test (without tra1.42) 2 0.1 B 10 10 10 0.94 3 0.25 A 10 10 10 __ 4 0.5 B 9.5 * 10 10 0.80 5 0.75 A 10 10 10 0.63 6 1.0 B 10 10 10 0.64 7 2.0 A 10 10 10 0.56 8 5.0 B 10 10 10 0.55 9 10.0 A 9.8 * 10 10 0.56 * Little collection was visually observed on the exterior walls, mainly in the contact marks. In Table 1, "ASW" means exterior side wall, 111 SW "means interior side wall, and" ID "means the interior dome.In short, it was found that the composition forming lubricant and surface conditioner as applied to the bo The clean aluminum tees provided improved mobility to the boles even at very low concentrations of active ingredient, and had no adverse effect on the adhesion of label printing n the internal lacquer tested yet from 20 to 100 times the concentration d use required to reduce the coefficient of static friction of the boats.

EXAMPLE II This example illustrates the use of the aluminum canister surface lubricant and conditioner of Example 1 in an industrial boat manufacturing facility when the cans pass through a printing station at the speed of 1260 boes per minute. The production of aluminum cans was washed with an acidic cleaner (Ridoline (R) 125 C0 available from Parker Amchem Division, Henkel Corporation, Madison Heights, MI), and then treated with a chromate-free conversion coating (Alodine ( R 404, also available from the Parker Amchem Division, Henkel Corporation, Madison Heights, MI) The production of miniature cans was then tested for "sliding" and the exterior of the tees was found to have a static coefficient of friction. Approximately 1.63 during the processing of these cans through a printing station, the cans could be run through the printer station at the speed of 1150 to 1200 btes per minute without excessive "trips", ie In this case, the boats are not loaded properly on the mandrel where they are printed, each "trip" causes a loss of boats that have to be discarded because they are not acceptable. to the final stage processing. Approximately 1 ml / liter of aluminum canister surface lubricant and conditioner was added to the deionized rinse aid system of the canister washer, which provides a reduction in the static coefficient of friction on the top of the cans to a value of 1.46. or a reduction of approximately 11 percent of its original value. After making the cans through the printer, it was found that the bonding of the coats, the internal and external coatings remained unaffected by the lubricant and surface conditioner. Ad more, the speed of printer could be increased to its mechanical limit of 1250 to 1260 boats per minute without new problems. Similarly, by increasing the concentration of lucerizer and aluminum canister surface conditioner in the deionized rinse water system, it was possible to reduce the coefficient of static friction of the cans by 20 percent without adversely affecting the adhesion of the internal coatings. and outside of the boats. In addition, it was possible to maintain printer speed continuously at 1250 cans per minute during a 24-hour trial period.

EXAMPLE III This example illustrates the use of other materials as the basic component for the aluminum can surface lubricant and conditioner. The aluminum cans were cleaned with an alkaline cleaning solution having a pH of about 12 to about 419C for about 35 seconds. The cans were placed in juagaron, and then treated with three different lubricants and surface conditioners comprising various phosphate ester solutions. Phosphate ester solution 1 purchased a phosphate acid ester (available under the trade name Gafac (R) PE 510 from GAF Corporation, Wayne, NJ) at a concentration of 0.5 g / 1. Phosphate ester solution 2 comprised an ethoxylated alkyl alcohol phosphate ester (available under the tradename Ethfac (R) 161 from Ethox Chemicals, Inc., Greenville, SC) at a concentration of 0.5 g / 1. Phosphate ester solution 3 comprised an ethoxylated alkyl alcohol phosphate ester (available under the tradename Ethfac (R) 136 from Ethox Chemicals, Inc., Greenville, SC) at a concentration of 1.5 g / 1. . The mobility of the boats in terms of static friction coefficient was evaluated and found to be as follows: PH solution Friction Coefficient is Phosphate Phosphate Ester 1 3.6 0.47 2 3.3 0.63 3 2.6 0.77 None 1.63 The aforementioned phosphate ester solutions gave acceptable mobility to the aluminum cans, but the boats were completely covered with "water breakage". It is desired that the cans are free of water breaks ie they have a thin, continuous film of water on the same, use otherwise they contain large droplets of water, and the water film is not uniform and is discontinuous. To determine if this is detrimental to the impression the boats were evaluated for adhesion. That is, the decorated pots were cut open and boiled in a solution of 1% liquid dishwashing detergent (Joy (R)) that purchased 3: 1 deionized water: tap water for ten minutes. The cans were then rinsed in deionized water and dried. As in Example 1, eight marked written lines were cut to the liner of the cans on the inner and outer side walls and the inner dome. The writing lines were covered with tape, and then the tape was removed. The cards were classified by adhesion values. The average value is summarized in Table 2.

Table 2 Solution of E_s Phosphate Termination Rating OSW IS ID Control 10 10 10 1 9.8 6.8 1.0 2 9.8 10 10 3 10 10 10 In Table 2, "OSW" means "outer side wall", "ISW" means " inner sidewall "e" ID "means" inner dome ". For the control, it was observed that there was no collection (loss of coating adhesion) in either the outer wall, the inner side wall or the inner dome of the boats. For phosphate ester solution 1, it was observed that there was almost no collection on the outer side wall, substantial pick-up on the interior side wall, and complete failure on the interior dome of the boats. For solution 2 of phosphate ester, it was observed that there was almost no collection on the outer side wall, and no collection on the interior side wall and no collection of the inner dome of the boats. For the solution 3 of phosphate ester, it was observed that there was no collection in the outer side wall, the inner side apron and the interior dome of the boats.

EXAMPLE IV This example illustrates the effect of the lubricant and surface conditioner of this invention on the water drainage characteristics of aluminum cans treated therewith. The aluminum cans were cleaned with acidic cleaner (Ridoline (R) 125 CO, followed by Alodine (R) 404 or Ridoline (R) 125 CO only) or with an alkaline cleaned solution (Ridoline (RP 3060 / 306 process), all products being available from the Parker Amchem Division, Henkel Corporation, Madison Heights, MI, and then rinsed with deionized water containing about 0.3% by weight of a surface-conditioning lubricant of this invention. that the cans rinsed in this way will be drained for up to 30 seconds, the amount of water remaining in each can was determined.The same test was conducted without the use of the lubricant and surface conditioner.The results are summarized in Table 3.

Table 3 Drain Time Remaining Water, Gramps Per Boat, Seconds With DI Water With 0.3% Conditioning 6 2.4-3.0 not determined 12 2.1-3.5 2.8 18 2.2-3.5 2.3 30 1.8-3.4 2.3 It was found that the presence of the lubricant and surface conditioner caused the water to drain more evenly from the boats, and that the boats remained free of "water break" for a longer time.

EXAMPLE V This example illustrates the effect of the furnace temperature on the lateral wall strength of the aluminum bots. This test is a quality control compression test that determines the column strength of the boats by measuring the pressure at which they deform. The results are summarized in Table 4.

Table 4 Oven temperature (9C) Column resistance (kg / cm) 227 6.06 204 6.17 193 6.20 182 6.27 It can be seen from Table 4 that at an oven drying temperature of 1935C, an increase of 0.14 p kg was obtained / cm in the column strength test compared to the value obtained at 2275C for furnace temperature. Super-column column strength test results are preferred and are often required because the thin walls of the finished cans must withstand the pressure exerted from within after they are filled with a carbonated solution, otherwise, Boats that have walls weak walls will swell and deform or may break easily or even explode. It was found that the faster the water film drift resulting from the presence therein of the lubricant and surface conditioner composition of this invention makes it possible to reduce the temperature of ISO drying ovens and in turn obtain superior results from column resistance. More specifically, in order to obtain adequate drying of the rinsed cans, the cans are allowed to drain briefly before entering the drying ovens. The time that the cans reside in the drying ovens is typically between 2 and 3 minutes, depending to a certain degree on the line speed, oven length and oven temperature. In order to have adequate drying of ISO cans in this time frame, the oven temperature is typically 227 ° C. However, in a series of tests in which the rinse water contained approximately 0.3% by weight of a lubricant and surface conditioner of this invention, it was found that it was possible to obtain satisfactory drying of the cans in which the oven temperature red jo to 2049C and then to 1885C, and the dry boats were obtained all the way.

Examples of Group VI Uncleaned aluminum cans from an industrial booster manufacturer are cleaned by washing in Type A examples with alkaline cleaner available from Amchem Parker Division, Henkel Corporation, Madison Heights, Michigan, using the Ridoline (R) 3060 process / 306 and in the Type B Examples with an acidic cleaner, Ridoline (R) 125 C0 from the same company. After the initial rinse and before final drying, the clean cans are treated with a lubricant and surface conditioner comprised of approximately 1% by weight of active organic (1) in deionized water as specified in Table 5 below. In a separate set of examples, following the initial rinse and before final drying, the clean cans are treated with a reactive lubricant and surface conditioner comprised of approximately 1% active organic (I) in deionized water more approximately 2 gm. / i (0.2% by weight) of the inorganic (II) as specified in Table 5, below. In yet another set of examples, after the initial rinsing and before the final drying, the clean cans are treated with a lubricant and surface conditioner comprised of approximately 1% active organic (I) in deionized water plus approximately 0.5% by weight of surfactant agent (III) specified in Table 5, then in an additional set of examples, after initial rinsing before final drying, the clean cans are treated with a reactive lubricant and surface conditioner in deionized water comprised of approximately 1% active organic (I), approximately 0.2% inorganic (II), approximately 0.5% surfactant agent (III) as specified in Table 5, below.

Table 5 Type of Organic Active (I) Inorganic (II) Agent Tensium pH Coefficient Example Commercial Name Active description (III) - friction after drying A Emery 657 Caprylic acid A12 (S0 ») 3 IGEPAL CO-887 2 .2 less than 15 B Emery 659 Capric acid H2ZrF6 TRITON X-101 2 .2 A Emery 651 Acid la rJco FeF. NEODOL 25-5-3 2 .3 B Emery 655 Ironic acid SnCl. TERGITOL TMN-6 2.3 A Emersol 143 Palmitic acid 91% Ce (N03) 4 TRITON DF-16 2.6 B Emersol 153 NF Stearic acid H9TiF, - TRYCOL 6720 2 .6 92% a ° A Emersol 871 Isoostearic acid H HfFg ANTAROX LF- 330 2.6 B Emersol 6313 NF Oleic acid 75% (NH4) 2ZrF6 TRITON H-55 2.6 A Empol 1014 Dimer acid 95% Fe2 (S04) 3 TRITON H-66 2.6"B Emeri 1110 Azide acid A1 (N03) _ TRITON QS- 44 2 .6 B Ethox M15 Isostearyl-TiCl acid TRYCOL 6720 3 .0 co-ethoxylated Emulohor VN 430 Oleic acid pl i- Cel3 SULF0NIC LF-17 3.0 oxyethylated Table 5 (continued) Type of Active Organic (I) Inorganic Description (II) Strain Acting pH Coefficient Example Active Commercial Name (III) "Static friction after Drying B Ethox M05 oleic acid poU FeF3 LOMAR D 3.0 less than 1 .5 ox i etide A Monamide 150 LW alkanolamide laureth- FeCl DOWFAX 2A1 2 .0 ri: a B Monamide 150 MW Alc.inol amide mi-- FeBr DYASULF 9268-A 3 .0 Ristic A Monamide 150 IS Alcinolamide iso- HpZrFg DYASULF C-70 4.0 stearic B Monamide 718 Alkanolamide This H TiFc IGEPAL CO-887 5.0 arica "2 6 A Gafac BH 650 Phosphate ester Fe (N03) 3 POLYTERGENT SLF- 2.0 aliphatic, form 18 acid B Ethox PP16 Phosphate ester (NH4) ZrF POLURONIC L-61 3.0 a romatico co A Gafac BL 750 Phosphate ester TaF3 TETRONIC 701 6.0 tico, form Table 5 (continued) B Gafac PE510 NbF phosphate ester NbF, PLURONIC 31R1 5.- less than 1 rratic, acid form A Ethfac 142W Phosphate ester alj_ H2ZrF4 PLURONIC 150R1 4.0 phatic B Gafac RA600 Phosphate ester alj_ (NH4) 2Mo04 APG 300 6.0 phatic, acid form A Armeen Z acid N-coco-B-amino H2TiF6 TRITON CF-21 6.0 butyric B Hamposyl L lauroyl sarcosine VF4 TRITON DF-18 5.0 A Hamposyl C Cocoyl sarcosine FeF, TRITON GR-7M 4.0 B Hamposyl 0 Sarcosine Oleioyl SnCl TRITON H-55 3.0 A Hamposyl S Stearyl sarcosine A12 (S04) 3 TRITON X-100 2.0 B Acusol 410N Polyacrylic acid, H2ZrF6 TRITON X-120 4.0 sodium salt Neodol 91-2.5 Carbones C9-C11 / 2.5 H2ZrF6 IGEPAL CO-430 6.0 etoxi latos Table 5 (continued) Type of Active Organic (I) Inorganic Description (II) Strain agent pH Coefficient Example Active Commercial Name (III) Ethical Friction after Drying Neodol 25-12 carbons / 12 IGEPAL C0-530 5.0 less than 1. 12 ^ 15 FeF ethoxy sides Neodol 45-7 carbons / 7 Ce (N03) IGEPAL CO-710 15"^ 15 4.0 ethoxy sides B Triton GR-5M Dioxide lsulfo-succinate A 1 (N03) 3 TRYCOL 5882 6.0 A Avanel S 70 Alkyl sulfate-V0S04 TRYCOL 5887 5.0 Sodium ether B Igepon TC-42 N-coconut and N-methyltaura VF3 TRYCOL 5964 4.0 to sodium A Igepon TK- 32 N-meti 1-N-taurate of VF3 IGEPAL CO-887 3.0 Sodium ce-oil oil B Neodol 25-3A Linear alcohol sulfo- (NH4) 2W04 IGEPAL C0-630 3.0 nado, ammonium salt Aromox C / 12 Oxide of bis (2-hydro- (NH5) 2ZrF6 NEODOL 25-3 3.0 xieti 1) cocaine Table 5 (continued) Type of Active Organic (I) Inorganic Description Tension Agent pH Coefficient Example Trade Name (Active ID (III) Friction After Drying B Aromox DMC Dimethylcoca-FeF oxide. NEODOL 25-35 3.0 less than 1. mine A Ethoquad 0/25 Oleyl chloride Fe2 (S04) 3 NEODOL 25-9 2.0 (P0E (15)) ammonium B Ethoquad C / 15 Chloride coconut ethyl Al SO,). , NEODOL 91-25 3.0 (P0E (2)) ammonium c 4 JA Ethoquad 18/5 Octadecyl chloride Sn (S04) TRITON Q5-15 3.0 (POE (15)) ammonium B Propoquad T / 12 Methylsulfate of ceboCe2 (S04) 3 TRITON DF-12 2.0 alkyl 1-methyl-bis- (2-hydroxy-2-methyl-1) ammonium A Ethfac 136 Phosphate ester H2ZrF4 IGEPAL 10-887 2.3 B Ethox 2684 Phosphate ester H2ZrF6 IGEPAL CO-887 3.7 A Trylox 5922 Castor oil hiH2ZrF6 IGEPAL CO-887 2.3 drugged, ethoxylated B Trylox 5921 H2TiF6 IGEPAL CO-887 2.7 A trylox 5925 H2ZrF6 TRITON H-66 2.7 Example and Example of Comparative Group VII Two different combinations of surfactant were prepared. The first consisted of SUF0NICMR LF-17 and TIRT0N N-101 in a ratio of 111: 156. The second consisted of EMULS0GENMR TP-2144, TRYC0LMR LF-1, and ANTAROX LF-330 in a relation of 201: 64.5: 64.5. All of these commercially available surfactants are alkyl polyethers, except for TIRTON, MR which is a nonylphenol ethoxylate, and EMULSOGEN TP-2144, which is an ethoxylated turpentine resin and, therefore, contains a ring structure. of phenanthrene. Approximately 0.2% of each surfactant combination was added to separate batches of aqueous sulfuric and hydrofluoric acids in the amounts used in conventional acid cleaner for aluminum cans, and these combinations of acid and surfactant were used as the base treatment liquid. for Stage 2 as defined in the previous Table. In order to simulate the accumulation of lubricant and aluminum-containing species that would occur in normal long-term use of such a cleaner for large volumes of aluminum can processing, these cleaning compositions were also added (i) 2 g / L of a lubricant mixture consisting of 30 parts of DTIMR 5600 M3 lubricant, 37 parts of DTIMR 5600WB MRR refriger and 33 parts of Mobil 629 Hydraulic Lubricant 91products that include the letters "DTI" in their earlier designations are commercially available from Diversified Technology Inc.

San Antonio, Texas, USA) and (ii) sufficient sodium aluminate to correspond to 1980 parts per million equivalent of aluminum trio equivalent. For further simulation of prolonged operations, Stage 3 as defined in Table A contained 5% volume of the cleaning solution in tap water as its treatment line, and in some of the experiments, Stage 4 as defined in Table A, in which the treatment liquid was mainly FIXODINE (R) 500, was "contaminated" with 0.25 or 1.0% of the cleaning bath, while in other experiments, the treatment liquid from Stage 4 was left Free of any cleaner bath. (It has been determined by extensive experience that a balance of treatment liquid that is routinely discharged in addition to less contaminated solution will contain approximately 5% by volume of the treatment liquid from the previous process step in addition to its nominal constituents, deliberately added. Treatment fluids from Stages 2 and 3 are routinely spilled routinely, while the treatment liquid from Stage 4 usually does not, therefore, the treatment liquid from the Stage may be even more contaminated than it would otherwise be. it would be expected to carry 5% of the treatment liquid from Stage 3, which would correspond to a content of 0.25% of the treatment liquid of Stage 2) In all these experiments, it was observed that the bath of Stage 4 developed silt when it was used acidic cleaning solution containing the second surfactant combination but remained free of silt when the solution was used The first contains the first combination of surfactant.

Example and Example of Comparison Group VIII These examples and comparison examples were carried out in a real commercial cleaning line, in a plant where MR the primary materials to be cleaned were lubricant DTI 5600 M3, refrigerant DTIMR 5600 WB and hydraulic lubricant obi 1MR 529. The cleaner used as Step 2 in the preferred example according to the invention for this group consisted of new 450 parts of aqueous sulfuric acid with a density of 66 ° Baumé, 93 parts of TRIT0NMR DF-16 (commercially available from Union Carbide). Corp., reported to have an HLB value of 11. and consisting of ethoxylated linear alcohol molecules and end-propoxylated with 8 to 10 carbon atoms in MR alcohol residue), 7 pater of PLURAFAC D- 25 (commercially available from BASF Corp., reported to have an HL value of 10.) and which consists of molecules of the same type as the arrib MR described for TIRT0N DF-16, except that there are 10 to 16 carbon atoms in the alcohol residue), and 450 parts of water. The treatment liquid from Stage 4 when fresh was FIXODINE ( 500. these treatment liquids were operated in real cleaning, with conventional spraying and replenishment of the various liquid treatment, of more than 1400 aluminum drink cans per hour for approximately seven months of continuous operation (except for brief line arrests). it causes possible needs for equipment malfunctions or routine maintenance, these are reported to have a total of more than an average of three days per month). The treatment liquid from Step 2 was maintained at 60 + 1.1SC and the treatment liquid from Step 4 was maintained at 43 + 0.55 ° C. During this operation, at intervals the concentrations of free acid and "Reaction Product" in the trituration liquid of Step 2 were measured as described in Parker Amchem Technical Process Bulletin No. 971, Revision of April 19, 1989 , and the concentrations of free acid and "Reaction Product" for the treatment liquid of Step 4 were given as described in Parker Amchem Technical Process Bulletin No. 1373, Revision of September 22, 1994. Aluminum dissolved in parts per million in the treatment liquids of Stage 2 and Stage 4 is known to be within + 10% of the value obtained by multiplying the Reaction Product value by 90 for Stage 2 and by 18 for the Stage MR 4. Concentrations of TRITON DF-16 (abbreviated below as "DF-16") and PLURAFACMR D-25 (abbreviated as "D-25" ac tinuation) surfactants were calculated from acid Isolators. free assuming that all the ac The free ionization came from the complete ionization of the sulfuric acid in the fresh treatment liquid from Stage 2 and that the surfactants were present in the same ratios to the sulfuric acid co in the treatment liquid of Stage 2. Some of Iso Most relevant values are shown in Table 6 below. In all these cases, the treatment liquid of Stage 4 p remained free of any discernible sludge, either in suspension in the liquid or on top of the foam layer that is normally present during constant state operations at the same time. that of treatment liquid from Stage 4.

Table 6 Characteristic Value for Characteristic after the Following Number of Days of Operation: 71 105 169 204 224 For Stage 2: Acid Points Lj ^ b 16 14 14 14 14 ppm Al + 3 Dissolved 1080 990 900 1260 990 990 g / L DF-16 1.74 1.52 1.52 1.52 1.52 1.52 g / L of D-25 0.13 0.11 0.11 0.11 0.11 0.11 For Stage 4: DH 2.6 2.7 2.7 2.6 2.6 2.6 Free Acid Points n.m. 1.0 1.0 1.2 1.5 1.5 ppm Al + 3 dissolved n.m. 252 73 284 306 306 % of Boats that were Exempt from Water Breakage after Stage 6: Outdoor 100 100 100 100 100 100 In the Interior 90 100 100 100 100 100 In contrast to this, in an otherwise similar production operation in which the treatment liquid of Step-2 contained a surface-active agent based on ethoxylated turpentine resin acids including a The phenanthrene ring structure, solid sludge was observed to accumulate on the foam layer in the treatment liquid tank of Step 4. From there, the slime was occasionally dispersed to various other treatment solutions in the process line and when spelled in this manner, it was often transferred to the surface of the treated cans, causing failure of full coverage of the can surface by the subsequently applied lacquer. Failures of full coverage require rejection of the cans in question, and occurred frequently enough to require corrective measures to maintain the commercial economic viability of the processing operation.

Claims (15)

1. - A process comprising the steps of: (I) cleaning an aluminum canister with an aqueous acidic solution comprising a surfactant component, and (II) contacting the aluminum canister after the first step. (I) with a lubricant forming composition and an aqueous surface layer, other than the aqueous acidic cleaning solution, the lubricant and aqueous surface conditioner, as dissolved, d, or both, dissolved and dispersed, components therein ( i) water-soluble organic material selected from phosphate esters, alcohols, fatty acids including mono-, di-, tri-, and poly-acids; fatty acid derivatives including salts, hydroamide acids, esters, ethers and derivatives thereof, and mixtures thereof, and (ii) at least one of the elements selected from zirconium, titanium cerium, aluminum, iron, tin, vanadium, tantalum, niobium, molybdenum, tungsten and hafnium in ionic metal form, wherein the improvement comprises using an aqueous acidic cleaning solution containing no more than about 0.1% carbon atoms which are part of phenanthrene rings and a lubricant and surface conditioner forming composition, containing no more than about 0.01% of carbon atoms that are part of phenanthrene rings.

2. A process according to claim wherein the surfactant component of the aqueous liquefying solution consists essentially of: (A) a component of nonionic surfactants selected from the group consisting of surfactants corresponding to the general chemical formula (I): where a is 0 or 1; R represents an alkyi fraction that can be branched or unbranched and saturated or unsaturated but does not include any aryl group and the su one of the plus the number of carbon atoms in R is 10-22: n is an integer from 2 to 4 that it can be different from one cnH group to another in the same molecule; and b is integer, the value or values of b being selected so that the equilibrium of hydrophilicity ("HLB") total component is, preferably increasing in proportioned order, from about 8 to about twenty; and (B) a component of nonionic surfactants selected from the group consisting of surfactants corresponding to the chemical formula: R '-? - (C nH2r | O) H, wherein R1 represents a mole fraction which may be branched or unbranched and saturated or unsaturated but does not include any aryl group having from about 4 to about 16 carbon atoms; (I represents a phenylene group, n has the same meaning as for formula (I) above, and c is an integer, the value or values of c being selected so that the HLB of the total component is about 9. at about 21.

3. A process according to claim 2 wherein the sum of plus the number of carbon atoms in R is from 12 to 20, n is 2 or 3, the value or values of b are selected so that the HLB of component (A) is from about 10 to about 18, R 'has from 6 to 14 carbon atoms, the value or values of c are selected so that the HLB of the compound (B) is from about 10.6 to about 19, and the ratio of component (A) to component (B) is from about 0.1 to about 10.

4. A process according to claim 3 wherein the value or values of b are selected so that the HLB of component (A) is from about 10.5 to about 16, the value or values of c being selected ona so that the component HLB (B) is around 11.2 to about 15; and the ratio of component (A) to component (B) is around d .2 to approximately

5. 5.- A process in accordance with the rei indication where the value or values of b are selected so that the HLB of component (A) is about 11.0 to about 15.; the value or values of c are selected so that the HLB of component (B) is from about 11.7 to about 1 and the ratio of component (A) to component (B) is from about 0.3 to about 4. .- A process according to claim wherein the value or values of b are selected so that the HLB of component (A) is from about 11.3 to about 15; the value or values of c are selected so that the HLB of component (B) is from about 12.2 to about 14.5; and the ratio of the component (A) to the component (B) is d around 0.4 to about 3. 7. A process according to the claim wherein the value or values of b are selected so that the HLB of the component ( A) is around 11.5 to about 14; R 'has 8-10 carbon atoms; the value or values c are selected so that the HLB of component (B) is from about 12.5 to aroxy to 14.3; and the ratio of the component (A) to the component (B) is from about 05. to about 2. 8.- A process according to claim wherein the sum of plus the number of carbon atoms in R e from 14 to 18; the value or values of b are selected so that the HLB of component (A) is from about 11.7 to about 13.7; the value or values of c are selected so that the HLB of component (B) is from about 12.7 to about 14.1; and the ratio of component (A) to component (B) is from about 0.5 to about 1.5. 9. A process according to claim wherein the value or values of b are selected so that the HLB of component (A) is from about 11.8 to about 13.5; the value or values of c are selected so that the HLB of component (B) is from about 12.9 to about 13.9; and the ratio of the component (A) to the component (B) is from about 0.55 to about 12. 10. A process according to claim wherein the value or values of b are selected so that the HLB of the component ( A) is from around 11.9 to approximately 13.3; the value or values of c are selected so that the HLB of component (B) is from about 13.0 to about 13.8; and the ratio of component (A) to component (B) is from about 0.60 to about 1.0. 11. A process according to claim 10, wherein the value or values of b are selected such that the HLB of component (A) is from about 12.0 to about 13.1; the value or values of c are selected so that the HLB of component (B) is from about 13.1 to about 13.7; and the ratio of component (A) to component (B) is from about 0.61 to about 0.9. 12.- A process in accordance with the claim 11, wherein the value or values of b are selected so that the HLB of component (A) is from about 12.1 to about 12.9; the value or values of c are selected so that the HLB of component (B) is from about 13.2 to about 13.7; and the ratio of component (A) to component (B) is from about 0.64 to about 0.85. 13.- A process in accordance with the claim 12, wherein the value or values of b are selected so that the HLB of component (A) is from about 12.1 to about 12.8; the value or values of c are selected so that the HLB of component (B) is from about 13.3 to about 13.6; and the ratio of component (A) to component (B) is from about 0.66 to about 0.83. 14.- A process in accordance with the claim 13, where the value or values of b are selected so that the HLB of component (A) is about 12.1 to about 12.7 and the ratio of component (A) to component (B) is about 0.67 to approximately 0.80. 15.- A process in accordance with the claim 14, where the value or values of b are selected so that the HLB of component (A) is from about 12.1 to about 12.6 and the ratio of component (A) to component (B) is about 0.68 to approximately 0.79. 17.- A process in accordance with the claim 16, where R 'has 9 carbon atoms, the value or values of b are selected such that the HLB of component (A) is from about 12.1 to about 12.4; and the ratio of the component (A) to the component (B) is around 0 ^ 70 to approximately 0.77. 18.- A process in accordance with the claim 17, wherein the value or values of b are selected so that the HLB of component (A) is from about 12.1 to about 12.3 and the ratio of component (A) to component (8) is about 0.71 to approximately 0.7

6. 19.- A process in accordance with the claim 18, wherein the ratio of component (A) to component (B) is from about 0.71 to about 0.76. 20.- A process in accordance with the claim 19, wherein the ratio of component (A) to component (B) is from about 0.71 to about 0.73.