Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/26—Organic compounds containing oxygen
  • C11D7/265—Carboxylic acids or salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/02—Inorganic compounds
  • C11D7/04—Water-soluble compounds
  • C11D7/08—Acids
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/32—Organic compounds containing nitrogen
  • C11D7/3245—Aminoacids
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/36—Organic compounds containing phosphorus

Definitions

• the invention relates to a new additive for aqueous alkaline cleaning solutions for machine bottle cleaning systems for glass bottles, especially for beverage bottles.
• the additive has the task of the alkaline bottle cleaning usually occurs glass corrosion to reduce. Further aspects of the invention relate to the use of the Additives in aqueous cleaning solutions for machine cleaning of Glass bottles.
• bottles are cleaned thoroughly.
• Bottle cleaning machines of the bottling plants are used for this Usually strongly alkaline.
• the alkali metal hydroxide content is usually in the range 0.5 to 5, in particular 1 to 3% by weight.
• suitable products and processes achieve the desired cleaning effect.
• An unwanted one The effect of bottle cleaning is glass corrosion. Underneath it is understood that the surface of the glass bottles is chemically attacked becomes what leads to surface roughness. A sequela is common difficult cleaning of the rough surface and the risk of growth of microorganisms in cracks and holes in the surface. From the It is known from practice and from laboratory tests that the corrosiveness of those containing sodium hydroxide Cleaner solutions due to an increased proportion of sodium carbonate increases.
• the object of the invention is therefore to an active ingredient combination for aqueous alkaline cleaning solutions to provide for the mechanical cleaning of glass bottles, which, in addition to cleaning-enhancing properties, reduce the Glass corrosion contributes.
• the object of the invention is this Formulate active ingredient combination in the form of a concentrate that as Additive can be added to the aqueous alkaline cleaning solution on site can.
• Aliphatic hydroxymono-, hydroxydi- or hydroxytricarboxylic acids with 3 up to 6 carbon atoms and 1 to 5 hydroxyl groups are more technical as components Cleaner known. It is also known to use cleaning solutions containing mineral diphosphonic acids of the general formula (I) given below, aminomethylenephosphonic acids of the general formula (II) or phosphonocarboxylic acids to add the general formula (III). It is assumed that the acids or their anions complexing properties in particular compared to the hardening ions of water. The above Phosphonic and phosphonocarboxylic acids also show so-called hardness-stabilizing (scale-inhibiting) properties.
• DE-C-23 25 829 describes a sequestering agent for 2- and 3-valent cations in the form of a mixture of 1-hydroxyethane-1,1-diphosphonic acid, Aminotrimethylene phosphonic acid and 2-phosphonobutane 1,2,4-tricarboxylic acid or their water-soluble salts.
• This font contains detailed information about which geminal diphosphonic acids, aminomethylene phosphonic acids and phosphonocarboxylic acids as a sequestering agent combination can be chosen.
• Phosphonic acid types are also in the sense as phosphonic acid components of the present invention.
• W092 / 08824 discloses an aqueous alkaline cleaner for aluminum a pH between 10 and 12, which is an alkaline builder component, Aminoalkyl or hydroxyalkyldiphosphonic acids, surfactants and complexing agents for aluminum contains.
• complexing agents for aluminum among others Gluconate and tartate indicated.
• German Patent application DE-A-42 32 612 is the use of a combination from a phosphonic acid, an oxidizing agent and at least one short-chain organic carboxylic acid, selected from among others tartaric acid and citric acid, in acidic aqueous solutions that have a pH in the range have from 0 to 3 for the removal of magnetite deposits in water-bearing Systems known.
• the concentrates also contain a combination of different ones Phosphonic acids represented by the general formulas given below I, II and III are writable, and partly gluconic acid. It is the total phosphonic acid content is greater than the gluconic acid content.
• Known high wetting capacity preferably for cleaning plastic surfaces be used.
• constituents essential to the invention they contain monoamino or diaminomono or dicarboxylic acids or their Amides in combination with longer chain carboxylic acids and non-ionic Surfactants.
• Optional components in these cleaners can be: hydroxypolycarboxylic acids such as tartaric acid and citric acid, geminal diphosphonic acids such as 1-hydroxyethane-1,1-diphosphonic acid, aminophosphonic acids and phosphonopolycarboxylic acids.
• these cleaners can be used as builder substances Contain alkali metal hydroxides.
• the additive preferably contains 10 to 20% by weight, based on the free Acid, one or more of the carboxylic acids of group a) or their water-soluble Salts and 2 to 6% by weight, based on the free acid, one or more of the phosphonic acids of group b) or their water-soluble salts and 74 to 88 % By weight of water or an aqueous solution of further auxiliaries.
• the acids which can be used according to the invention are in the application solution in the form of their anions, regardless of whether the additive is them contains as free acids or as water-soluble salts. If you put the carboxylic acids of group a) and / or the phosphonic acids of group b) as water-soluble Salts, the alkali metal or ammonium salts are special suitable, preferably sodium salts are used.
• the term "Water-soluble” is to be understood to mean that the salts in the aqueous Phase of the additive in the concentration ranges mentioned above, based on the free acids, are soluble.
• Hydroxyacetic acids of group a) include, in particular, hydroxyacetic acid, Lactic acid, gluconic acid, tartronic acid, malic acid, tartaric acid and citric acid into consideration.
• amino carboxylic acids are according to the invention of group a).
• the naturally occurring alpha amino acids or Amino acid derivatives are usually those with the amino group Carbon atom chiral and are in the L-form.
• the chiral L-amino acids for the technical purpose according to the invention offer no particular advantage, they are considered natural or nature-identical Active ingredients are preferably used.
• amino acids in the form of their racemates or in optically active form for example use find: glycine, alanine, valine, leucine, isoleucine, beta-alanine, gamma-aminobutyric acid, epsilon aminocaproic acid, glutamine, glutamic acid, Aspartic acid, aminomalonic acid, aminoadipic acid and 2-amino-2-methylpentanedioic acid.
• the amino acids can also carry hydroxyl groups. Examples include serine and threonine.
• the additive is 2 to 4, preferably 3 different carboxylic acids and especially hydroxycarboxylic acids from the group a) contains, the combination of gluconic acid, lactic acid and citric acid leads to particularly positive results. It is cheap if the additive is gluconic acid, lactic acid and citric acid or their water-soluble salts in a weight ratio of 1: (0.5 to 1.5): (0.5 to 1.5), preferably in a weight ratio of 1: (0.7 to 1.0): (0.8 to 1.2) contains.
• the additive or phosphonic acids whose water-soluble salts contain the general formula (I) and / or (III), preferably at least one phosphonic acid of the formulas (I) and (III), in particular 1-hydroxyethane-1,1-diphosphonic acid and 2-phosphonobutane-1,2,4-tricarboxylic acid, be used.
• a preferred additive is characterized in that it is a phosphonic acid or their water-soluble salts of the general formulas (I) and (III) in a weight ratio of 1:10 to 10: 1, preferably 1: 1 to 10: 1, in particular 6: 1 to 9: 1 contains.
• an aqueous solution c) is preferably one Defoamer solution used, it being recommended in the context of the invention is that the defoamer has a proportion based on the total additive from 1 to 25, preferably 10 to 20 and in particular 13 to 18% by weight matters.
• the defoamer can be selected empirically depending on the type of contamination of the glass bottles. Those polyglycol ethers which are recommended in EP-B-124 815 as foam-suppressing additives in low-foam cleaning agents have proven successful. Accordingly, the defoamer is preferably selected from the group of polyethylene glycol ethers of the general formula (IV) R 4 -O- (CH 2 -CH 2 -O) n -R 5 in which R 4 is a straight-chain or branched alkyl or alkenyl radical with 8 to 18 C atoms, n is a number from 7 to 12, preferably from 8 to 10, and R 5 is an alkyl radical with 4 to 8 C atoms, in particular with 4 C atoms mean.
• R 4 is a straight-chain or branched alkyl or alkenyl radical with 8 to 18 C atoms
• n is a number from 7 to 12, preferably from 8 to 10
• R 5 is an alkyl radical with 4
• nonionic surfactants can be based on ethoxylation and / or propoxylation products of fatty alcohols or fatty amines.
• a Particularly suitable product group from ethoxylated fatty amines is in the DE-A-36 03 579 cited above.
• the ones described there Fatty amine ethoxylates are also used as additives to increase cleaning performance the additives of the invention are suitable.
• surface-active auxiliaries reaction products of fatty amines with 10 to 18 carbon atoms with 8 to 16 mol ethylene oxide into consideration. It is favorable if that or the nonionic surfactants in the aqueous solution c) in a are present in such an amount that they relate to the total additive Make up proportion of 1 to 6, preferably from 2 to 4 wt .-%.
• the polyether chain obtained by alkoxylation of the defoaming and of the surface-active auxiliaries can be conventional or so-called there is a "narrow" homolog distribution.
• the ready-to-use Cleaning solution or the concentrated additive for this analytical contains easily determinable lead substances.
• a soluble iodide, especially potassium iodide comes in Consider its content in the bath solution by iodometric titration can be easily determined.
• the additive contains such a lead substance in a concentration that is in the diluted bath solution can be easily determined, but not too application or wastewater problems.
• the invention Contain additive 0.1 to 0.5 wt .-% potassium iodide.
• the invention relates to the use of the additive in an aqueous cleaning solution containing alkali metal hydroxide mechanical cleaning of glass bottles.
• the use is characterized by that the cleaning solution has an active ingredient content of is adjustable in that the additive described above in such amounts to the cleaning solution that the content of the cleaning solution of carboxylic acids of group a) 100 to 1,000 mg / l, preferably 200 up to 800 mg / l, in particular 300 to 600 mg / l and of phosphonic acids Group b) is 50 to 400 mg / l, preferably 75 to 200 mg / l.
• the NaOH content of the cleaning solution is in the technically usual range of 0.5 to 5% by weight, preferably 1 to 3% by weight.
• the use according to the invention can advantageously be carried out in this way be that the additive described above, which is an active ingredient concentrate represents, in the appropriate dosage of alkali metal hydroxide-containing Adds cleaning solution.
• the use according to the invention can of course also be done in that the individual Active substances in the above-mentioned concentration range of the cleaning solution separately admits. From the comparison of the concentrations of the Active substances of groups a) and b) in the finished cleaning solution and in Additive can be made by diluting the additive accordingly resulting concentrations of other excipients nonionic surfactants, defoamers and easily calculate lead substances.
• the use is further characterized in that the bottles with the cleaning solution at temperatures between 40 and 90 ° C, preferably between 55 and 85 ° C for a period of 1 to 30 minutes, preferably 3 to 20 minutes in contact.
• the invention is illustrated by the examples shown below.
• test solutions included (except Cf. 1) 2 wt .-% sodium carbonate to the conditions in technical Approximately simulate baths. In practice, the sodium carbonate content of cleaning solutions fluctuate greatly. All test solutions included 2.5% by weight of NaOH, the components listed in Table 1 and water ad 100%. Comparative solution 1 was free of carbonate.
• Table 1 shows the test results.
• Additive concentrates were prepared in the form of aqueous solutions for addition to aqueous alkaline cleaning solutions for machine bottle cleaning by introducing the required amount of water and dissolving the other components therein with stirring at room temperature.
• a to K have the same meaning as in Table 1, L means potassium iodide.
• the active substance and auxiliary substance contents in the additive are stated in% by weight; the difference to 100% by weight is water.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Inorganic Chemistry (AREA)
• Detergent Compositions (AREA)
• Surface Treatment Of Glass (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6502420

Family Applications (1)

Country Status (7)

Families Citing this family (10)

Family Cites Families (5)

• 1993
  • 1993-11-12 DE DE4338626A patent/DE4338626A1/de not_active Withdrawn
• 1994
  • 1994-11-03 EP EP94931560A patent/EP0728180B1/de not_active Expired - Lifetime
  • 1994-11-03 AT AT94931560T patent/ATE170213T1/de not_active IP Right Cessation
  • 1994-11-03 DK DK94931560T patent/DK0728180T3/da active
  • 1994-11-03 CA CA002176336A patent/CA2176336A1/en not_active Abandoned
  • 1994-11-03 WO PCT/EP1994/003618 patent/WO1995013350A1/de active IP Right Grant
  • 1994-11-03 PL PL94314308A patent/PL314308A1/xx unknown
  • 1994-11-03 DE DE59406789T patent/DE59406789D1/de not_active Expired - Lifetime

Also Published As

Similar Documents

Legal Events