DE2713265A1 - ALKALINE DETERGENT COMPOSITIONS - Google Patents

Description

IR 2209A. ς.

The invention relates to alkaline detergent compositions or alkaline detergents for cleaning solid surfaces, such as food and beverage containers that are to be returned, as used in milk, ice cream mixes, soft drinks and similar materials. The alkaline detergent compositions are particularly useful for cleaning polycarbonate resins bottles produced without damaging the polycarbonate. They are also suitable for glass, polypropylene and polyethylene surfaces. The invention further relates to granular or granular detergents, aqueous concentrates and aqueous solutions for use. The alkaline detergents can be used in mechanical spray winders or dishwashers with a soaking tank can be used.

The desire to use clear, glass-like polymers that do not break has led to the development of polycarbonates, which can be produced in the form of foils, films or plates or which can be deformed into objects. The manufacture and properties of these polymers are commenced in the Encyclopedia of Polymer Technology, Volume 10 on page 710. Because polycarbonates essentially are linear thermoplastic polyesters of carbonic acid, they are very easily chemically attacked by free alkali.

On the other hand, those currently used in the dairy industry require Glass containers and processing devices that come into contact with milk, ice and other dairy products, free alkali with a pH of about 13 to peptize the fatty acid soil, making it detergent can be removed. Another kind of dirt that

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occurs in the dairy field, the normally polluting fungi are those that stain the polluted Food container walls grow. In the dairy industry, soil removal requires strong alkaline detergents and detergents useful in both mechanical spray cleaning and soaking tank cleaning are satisfactory.

Glass containers, such as glass milk bottles, often break, with both dairy workers and milk consumers can be wounded. This has resulted in the use of reusable or returnable polypropylene, polyethylene and polycarbonate food containers.

The use of smooth, clear and transparent polycarbonate milk containers was in the past, due to the chemical attack by the well-known bottle cleaning agents, where strong alkali is used, not possible.

Surprisingly, there has now been an alkali detergent composition found which can be used as an aqueous solution and which is used for cleaning soiled surfaces can be. These detergent compositions peptize Fatty acid soil in food products, such as milk, at a pH of around 8 to 12. Repeated washing with 75 cycles or more has shown that these new alkaline compositions polycarbonate, polypropylene, polyethylene or do not attack glass surfaces.

The basis of the new cleaning composition is an organic dicarboxylic acid detergent of the formula

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^ CH = CH
- CH CH- (CH ₂ ) _y R

^ CH-CH

I t

X X

in which one of the substituents X is a hydrogen atom, while the other of the substituents X is carboxylic, and in which R is CCOH and / or CSO ^, and their alkali metal salts. For convenience, the term C-21 dicarboxylic detergent is used, which is intended to include the free C-21 dicarboxylic acid, the sulfate derivative and its sodium or potassium salts. The preparation of the C-21 dicarboxylic acid is described in U.S. Patent 3,753,968.

The C-21 dicarboxylic acid sulfate is prepared by the C-21 dicarboxylic acid according to known sulfation processes sulfated. Generally, 1/2 to 11/2 moles of concentrated sulfuric acid are added to each mole of C-21 dicarboxylic acid admitted. It is believed that the sulfation is mainly one of the terminal carboxylic group opposite the carboxylic group attached to the cyclic portion of the molecule is preferred. It is however, it is also possible that some sulfation takes place on each carboxylic group.

The alkali metal salts of the C-21 dicarboxylic acid are obtained by substituting the alkali metal, preferably sodium, for the Hydrogen atom on the hydroxyl groups of the carboxylic Groups formed. The alkali metal source is the free alkali in alkaline materials such as sodium metasilicate and sodium carbonate. Some of the sodium substitution for the hydrogen is used in dry mixing in the manufacture

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Position of the composition take place. The substitution will be terminated when either an aqueous concentrate or diluted working solutions are prepared.

The alkaline cleaning compositions of the invention are prepared as dry, granular compositions which are dissolved in water for cleaning. Aqueous concentrates can also be made, but they are generally not used because of water transport is expensive. The following description of the compositions according to the invention relates, unless otherwise stated, on granular or granular concentrates.

The C-21 dicarboxylic detergent will be present in the granular detergent compositions of the present invention in amounts of from about 1 to about 9 percent by weight. Preferably, the C-21 dicarboxylic detergent concentration will be about 5 to 7 weight percent in concentrates for soaking tank cleaning and about 1 to 2 weight percent for spray applications.

The free alkali, which is required to peptize the fatty acid residues from milk and ice cream soiling, is introduced into the detergent compositions according to the invention mainly by alkali builders or alkali boosters (these terms are used synonymously in the present application). The alkali builder will be present in the range of about 5 to 28 wt.%, Preferably, the alkali builder make up about 10 to 20 wt.% In concentrates for both the cleaning in the soaking tank and for the spray cleaning.

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The alkali builders or boosters are compounds of a group that includes sodium metasilicate, potassium metasilicate, sodium orthosilicate, Includes potassium orthosilicate and their mixtures. These alkali builders are either anhydrous or hydrated Form present. If listed in the present application and in the claims, alkali builders or boosters unless otherwise stated, they are given in anhydrous form.

In addition to the C-21 dicarboxylic detergent, detergent action is achieved by alkali metal phosphates which are mixed with the C-21 dicarboxylic detergent act synergistically in the cleaning compositions of the invention. Farther the alkali metal phosphates act as water softeners by sequestering those present in the cleaning water Calcium and magnesium ions work.

The alkali metal phosphates included in the compositions of the invention are used by one or more alkali metal phosphates from the group sodium tripolyphosphate, Trisodium phosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate and sodium hexametaphosphate provided. The alkali metal phosphates are in a concentration from about 5 to 27 wt.% Used. For soaking tanic cleaning a preferred range for the alkali metal phosphate is about 10 to 20 wt%, while in spray applications the preferred range of concentration is about 15 to 27% by weight based on the concentrate.

Another class of ingredients often found in the present invention Detergent compositions are used,

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are detergent builders (these terms are used synonymously in the present application). Examples of detergent builders using the To facilitate achieving alkalinity in the masses are sodium sesquicarbonate, sodium sesquisilicate, sodium carbonate, Sodium bicarbonate and urea. In addition to creating alkalinity, the detergent builders can use the suspension, Facilitate dispersion or emulsion of dirt and peptization of fats and lubricants. In the invention Compositions act as builders for certain types of detergent builders, such as sodium chloride and sodium sulfate, due to their good solubility in water with the resulting, usual ion effect. In the invention Detergent concentrates can contain one or more of the above detergent builders at a concentration of from 0 to about 83 wt. Yes used v / earth. The preferred concentration of Detergent builder is about 28 to 62% by weight in soak tank detergents, while the preferred one Range for the spray composition about 30 to 63% by weight, based on the concentrate.

In order to facilitate the penetration of the C-21 dicarboxylic detergent in schv / older dirt, which occurs particularly in the cleaning of milk and ice cream containers, it was found that it is necessary etv / a 1 to 15 wt.% Of a hydrotropes and penetrating agent to use, which is a polynuclear methylnaphthalenesulfonate alkali metal salt having a molecular weight in the range of about 240-260. The methylnaphthalene sulfonate is generally supplied as the sodium or potassium salt. It can be a sodium or potassium monomethyl or dimethylnaphthalene sulfonate or a mixture of these compounds. The sodium salt is cheaper

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more readily available and therefore preferred. This material is commercially available under the label PETRO II and PETRO AA, sold by Petrochemicals Co., Inc., TAMOL SN, sold by Rohm and Haas Co., and NEKAL N.F., sold by GAF Corporation. A preferred concentration range of alkali metal methyl naphthalene sulfonate is about 5 up to 10 wt. Yes, based on the detergent concentrate for the Soaking tank. For spray applications, the preferred is Range about 2 to 5% by weight, based on the concentrates.

Should additionally surfactants in the cleaning compositions can be used, common wetting agents, emulsifying agents and dispersing agents along with are added to the alkali metal methylnaphthalene sulfatonate. About 0.5 to 5 parts by weight of surfactant will be used used with 99.5 to 95 parts by weight of the granular concentrates. The surfactants can be selected from the hundreds of materials available so long as they act in alkaline solutions. The surfactants can be present in a concentration of 0 to 5% by weight be. The surfactants useful in the detergent compositions of the invention include nonionic, anionic and amphoteric agents. Examples of nonionic agents are octylphenoxypolyethoxyethanol, which is available under the Trademark TRITON X-45 is sold; Nonylphenoxyethyleneoxyethanol, which is sold under the trademark IGEPAL CO 850; phenoxyethoxylated ethanol, which is under the Trademark ETlPHOS TS-211 is sold; Polyoxyethylene ester from mixed fats and resin acids, sold under the trademark RENEX 20; Glycol fatty ester, sold under the trademark HALLC0-376-N;

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Fatty acid glycol esters sold under the trademark ADVAWET 33 is expelled; Fatty acid alkanolamide, which is available under the trademark ALKAMIDE 2110 is sold; Cetyldimethylamine oxide sold under the trademark AMMONYX CO; more aliphatic Polyether sold under the trademark ANTAROX LF-344 is expelled; polyoxyethylene alkyl glycolamide sold under the trademark ANTAROX G-200 will; Fatty alcohol polyether sold under the trademark AROSURF 63-PE-16; Polyoxyethylene sorbitol ester mixed fatty and resin acids sold under the trademark ATLAS G-I234; modified, oxyethylated straight chain alcohol sold under the trademark PLURAFAC D-25 and ethoxylated nonylphenol which is sold under the trademark RENEX 648.

Examples of amphoteric agents are as follows, the corresponding trademarks being given in brackets are: disodium N-tallow-ß-aminodipropionate (DERIPHATE 154); the sodium derivative of a dicarboxylic caprylic acid (MIRANOL J2M); Lecithin (CENTROL CA, LA), lauryl ampholyte (Syndet) (SCHERCOTERIC BASE 156); Carboxylic acid derivatives of substituted imidazolines (MONATERIC); a cocobetaine complex (ACCOBETAINE CL); Cocylamidobetaine (CARSONAM 3 and 3W); Fatty sulfobetaine (LONZAINE CS); a dicarboxylic coconut derivative of isopropanolamine (MIRANOL IPA); a dicarboxylic coconut derivative of triethanolamine (MIRANOL TEA); the Sodium salt of a dicarboxylic coconut derivative (MIRANOL SF); the sodium salt of a dicarboxylic caprylic acid derivative (MIRANOL JEM); a dicarboxylic myristic acid derivative of diethanolamine (MIRANOL M2M-DEA); a dicarboxylic myristine derivative of monoethanolamine (MIRANOL M2M-MEA); the sodium salt of a dicarboxylic myristic acid derivative (MIRANOL M2M-SF); a dicarboxylic, carboxylic caprine

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acid derivative of diethanolamine (MIRANOL S2M-DEA); and a dicarboxylic capric acid derivative of triethanolamine (MIRANOL S2M-TEA).

Examples of anionic agents are as follows, the corresponding trademarks being given in brackets are: ethoxylated (3 mol) phosphate ester (TRITON QS-44); Sodium sulfate of 2-ethyl-i-hexanol (TERGITOL 08); Sodium petroleum sulf onate (PETRONATE K); Sodium alkyl naphthalene sulfonate (PETRO AR, SELLOGEN K, NEKAL BX-78, ALKANOL B and others); Dioctyl ester of sodium sulfosuccinic acid (AEROSOL OT); Sodium alkylarylsulfonate (AHCOWET-ANS); the sodium salt of sulfated alkylphenoxy poly (ethyleneoxy) ethanol (ALIPAL EO-526); Sodium methyl n-oleyl taurate (AMATERG T); Alkyl polyphosphate (ATCOWET C2); Sodium lauryl sulfate (AVIROL 101); Sodium N-methyl-N-talloleic acid taurate (IGEPON TK-32); Lauric acid-alkylolamine condensate (NOPCOGEN 14-L); modified Fatty alcohol sulfate (RICHONOL 4740); and modified diethanolamides of fatty acids (SHERCOMID).

. The combined amounts of alkali metal methylnaphthalene sulfonate and surfactants are about 20% by weight, based on the alkaline detergent concentrates.

The C-21 dicarboxylic detergents and the sodium methylnaphthalene sulfonate induce foaming properties in dilute aqueous solutions of the detergent compositions according to the invention, particularly when sprayed. If this foaming is undesirable, it can be controlled · The foam modifiers can be used in a concentration ranging from 0 to about 6 wt.% By the use of about 2 to 6 Gew.?6 foam modifier.

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For agents for the soaking tank, it is generally used in a concentration of about 3 to 5% in the detergent concentrate is used, whereas a preferred concentration for spray detergents is about 4 to 6% by weight. That Foam modifier can be selected from a number of products available for this purpose, including their mixtures, the only requirement being that the foam modifier, under alkaline conditions, in which the cleaning composition is formulated and used, is effective. In those applications where If the foam is desired or can be tolerated, a foam modifier is not required.

The foam modifier can be selected from a group including: mineral oils, vegetable oils and organic foam modifiers. Suitable foam modifiers are turpentine substitute oils that come under the trademarks DRAKEOL 5, 10, 21 and 35 are sold; vegetable fatty acid oil sold under the trademark PAIiOLYN will; and organic materials, such as modified, oxyethoxylated straight-chain alcohols, such as PLURAFAC RA20, RA30, RA40 and RA43; Alkylaryl polyether sold under the trademark TRITON CF10; trifunctional polyoxyalkylene glycols, like PLURADOT HA410 and HA430; Diethylene glycol dioleate, Polyethylene glycol recinoleate, polyethylene glycol dioleate, Tridecyl alcohol, nonylphenol and ethylene oxide condensation products with propylene oxide-propylene glycol base, such as PLURONIC L61, L62LF, L81 and L122.

It has been found that it is preferred to use sodium bicarbonate as a buffering agent in the detergent concentrates and about 5 to 15 % by weight of this material is used. A preferred concentration of sodium bicarbonate is about 5 to 1090 for both tank soak detergents and spray detergents.

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It has been found that it is expedient to use the detergent composition according to the invention as a granular, solid preparation or composition to be used. (These terms are used synonymously in the present application.) The Preparations are of course easily soluble in water and aqueous concentrates containing up to 40% by weight of detergent, are also available. The aqueous concentrates are golden yellow in color.

The range of the above ingredients in the granular detergents compositions is listed in Table I below.

Table I.
Large or granular alkaline detergent concentrates

Detergent

concentrate

Weight%

Preferred concentrate for the
Cleaning in one
Soaking tank, wt .%

Preferred concentrate for spray or spray applications Weight%

C-21 Dicarboxylic Detergent 1-9

Alkalibuilder 5-28

Alkali Metal Phosphate 5-27

Alkali metal methyl naphthalene sulfonate 1-15

Schaunua modifiers 0-6

Sodium bicarbonate 5-15

Detergent

builder 83-0

5-7
10-20

10-20

5-10
3-5
5-10
62-28

1-2
10-20

15-27

2-5
4-6
5-10 63-30

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ORIGINAL INSPECTED

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These materials are dry blended in a ribbon blender known per se or some other type of mixer. When the C-21 dicarboxylic detergent is the free dicarboxylic acid or is a free sulfate, these materials will be mixed with that present in the alkali or detergent builders Sodium react to form the sodium salts. The complete implementation at the mixing stage is insignificant because the free alkali in the aqueous use solutions will react with any residual acid groups.

The granular detergent compositions of the invention or preparations are used in v / water in a concentration in the range from about 0.25 to 5% by weight.

For cleaning a soak tank where it is difficult to remove all dirt, such as ice cream mixes and food forms, it is preferred to use a concentration of about 3 % by weight of the detergent of the invention in water. If required in special applications where particularly heavy dirt occurs, concentrations as high as 5% by weight can be used. As previously indicated, a high pH is required for the peptization of the fats in the foods and the cleaning solutions of the invention will have a pH of about 8-12. The pH of the solutions will preferably be about 10 to 11. Cleaning polycarbonate milk containers in a continuous soak tank cleaning process requires about 1 to 3 weight percent granular detergent composition in water.

For spray applications, the granular concentrates in the solutions in amounts in the range are used from about 0.25 to 5 wt.%. During the pressure that occurs during spray applications or

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Spray applications (these terms are used interchangeably in the present application), it has been found that the granular concentrates can be used in most applications in concentrations lower than those required for mechanical cleaning in a soaking tank. For example, for spray washing polycarbonate windows, the concentration of detergent in water will be from about 0.25 to about 0.5 weight percent . For the spray washing of polycarbonate and glass milk bottles, the granular concentrates are used in amounts of about 1.5 to 3% by weight. The cleaning time is varied and ranges from a few seconds for washing polycarbonate sheets used as windows in railroad trains and buses to about 30 minutes for cleaning in a soaking tank.

Necessary for the aqueous cleaning solutions temperatures (190 F ⁰⁾ vary from ambient temperature for washing windows to about 87.8 ⁰ C for washing in mechanical dishwashers. When cleaning polycarbonate bottles of milk in soaking tanks temperatures are used by about 65.6 ⁰ C (150 ⁰ F). Solution temperatures in the range of 48.9 to 71.1 ° C (120 to 160 ° F) are used for spray washing of removable milk containers. The detergent solutions can be sprayed onto the items to be cleaned or the items can be immersed in aqueous use solutions of the C-21 dicarboxylic see detergent. After the cleaning process, the containers are rinsed with clean water, which can be cold or hot as required. After removing the dirt and rinsing the containers with water, they can be returned to a hygienically perfect condition by treatment with water containing about 200 ppm of chlorine. The treatment with the aqueous chlorine

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solution can vary from about 30 seconds to several minutes. The temperature of the chlorine solution, which is used for sanitizing, is not more than 48.9 ⁰ C (120 ⁰ F), in general, because of the limited Chlorlöslichkeit at higher temperatures. After sanitizing, the food containers are rinsed again with clean water.

It is still possible to clean and sanitize the containers at the same time using a connection, which releases active chlorine in aqueous solutions, such as chlorinated trisodium phosphate and the sodium and potassium salts of dichloroisocyanuric acid. These sanitizing materials, when used, are used in such quantities as that 50 to 300 ppm of available chlorine are obtained. About 1 to 3 parts by weight are used in the granular concentrates Dichloroisocyanurate with about 99 to 97 parts by weight of granular Mixed concentrates. If chlorinated trisodium phosphate is used, about 5 to 12 parts by weight ground with about 95 to 88 parts by weight of granular concentrate mixed.

It has further been found that it is preferred to use an antistatic agent in the cleaning solutions when the C-21 dicarboxylic detergent is used in a dip cleaning process such as soaking tank cleaning. The antistatic agent prevents the dirt that is removed during the cleaning process from being redeposited out of the solution onto the object to be cleaned. An antistatic agent is generally not required in the spray cleaning solutions.

Generally, about 0.5 to 2 parts by weight will be antistatic See agent with about 99.5 to 98 parts by weight of C-21 dicarboxyIis Mixed detergent concentrates. The antistatic agent will

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added to the soak cleaning tank as needed. Alternatively, the antistatic agent can be used in the same proportions be present as part of the C-21 dicarboxylic detergent, whether in its granular form or as a liquid Concentrate is sold .. An antistatic agent can be one or more of the wide variety of materials available use, the main requirement is that it is stable in the alkaline working solutions. Generally are nonionic and amphoteric antistatic agents are satisfactory.

Typical nonionic antistatic agents are the glycol fatty esters, sold under the trademarks HALCO C-376-N and HALCO C-1047; the nonylphenoxy-polyethyleneoxyethanols, sold under the trademarks IGEPAL CO-520, IGEPAL CO-530, IGEPAL CO-430 and IGEPAL CO-850; Fatty acid glycol esters sold under the trademark KERIPON NC; Polyethylene glycol ester monolaurate, which under sold under the trademark LONGZEST PEG-4-0; Ethylene oxide condensate sold under the trademarks MERPOL OE, MERPOL OJ and MERPOL OJS is distributed; Polyoxyethylene sorbitan monolaurate, sold under the trademarks HALCO CPH-376N, HALCO CPH-377N and HALCO CPH-378N; Propylene oxide condensates with hydrophilic bases formed by the condensation of ethylene oxide with ethylene glycol and under the trademark PLURONIC 10 R 8, 17 R 8, 25 R 5, 25 R 8, 31 R 4, F-38, F-68, F-77, F-87, F-88, F-98, F-108 and F -127 are driven out; ethoxylated propylene oxide-ethylenediamine condensates, which under the trademarks TETRONIC 304, TETRONIC 5O4, TETRONIC 704, TETRONIC 707, TETRONIC 904, TETRONIC 908, TETRONIC 1104, TETRONIC 1107, TETRONIC 1307 and TETRONIC 1508 will.

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Amphoteric antistatic agents include O-cetyl betaines, the sold under the trademark Product BCO, o-decylbetaine, which are sold under the trademark Product BDO; N-Laurylbetaines sold under the trademark Product DDN are distributed; N-Cetylbetaines, which are available under the trademark Product HDN will be distributed; N-stearyl betaines, the sold under the Product ODN trademark; and N-oleyl betaines sold under the trademark Product UDN will; Palmj tyldimethylammonium-carboxylic acid betaines, which are sold under the trademark VELVETEX BP; Polyoxyethylene-alkylamines, sold under the trademark ATLAS-G-3780A; and reaction products of coconut amine and crotonic acid sold under the ARMEEN Z trademark.

The following examples illustrate the invention.

example 1

3.79 1 (1 gal.) Lexan polycarbonate bottles contaminated by sour milk and ilk molds are placed in an automatic bottle washer. Conveyor belts carry the bottles, immersed in a vertical position, through the soaking tank part of the bottle washing machine. The soak tank portion contains 1.36 kg (3 pounds) of the detergent composition of the invention for every 45.4 kg (100 pounds) of water. The detergent composition is prepared by adding 0.45 kg (1 pound) of ARI-ΙΞΕΝ Z ' ^A ' antistatic agent to 44.9 kg (99 pounds) of the following composition:

Part of granular detergent

Weight%

C-21 dicarbonates 6

Trisodium Phosphate (anhydrous) 7

Soda ash (light) 33

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Sodium Metasilicate Pentahydrate 30

Tetrasodium pyrophosphate 7

Sodium methylnaphthalene sulfonate 7

Foam Modifier (B) 4

Sodium bicarbonate 5

Wetting agent (C) 1

(A) N-coco-ß-aminobutyric acid

(B) ethoxylated straight-chain alcohol sold under the trademark PIJJRAFAC RA-43 is sold

(C) primary phosphate monoester prepared by blending of polyphosphoric acid and a hydroxyl compound sold under the trademark TRITON QS-44.

The pH of the detergent solution is 11.8 and the temperature is about 65.6 ° C (150 ° F). The dirty milk bottles are in contact with the detergent solution for about 7 minutes. The bottle washer then removes the bottles from the soaking tank and rotates them; reverses them so that all of the dirt and detergent solution drains back into the soak tank, after which the inverted bottles are directed to a first rinse tank. In this part of the bottle washer, a stream of clean water at about 60.3 ° C (140 ° F) is sprayed into the bottles and allowed to drain. The water rinse takes about 1 minute and then the bottles are transferred to a sanitary tank where a stream of water containing 200 ppm chlorine is sprayed onto the inverted bottles. The Hygienesprühtemperatur is about 48.9 ° C (120 ⁰ F).

The bottles are in contact with the hygiene solution for about 1 minute. After that, they become one from the conveyor belt last water rinse tank transported. This rinse water is cold, potable water and is also turned upside down Bottles sprayed. The cleaned milk bottles are then

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transported by the conveyor to the milk filling station. All of the dirt and mold are removed in this washing process, and the bottles show up a clean and beautiful appearance. Swab tests show that the cleaned bottles have a low bacterial count result.

Example 2

1/4 part by weight of the granular detergent used in Example 1 is dissolved in 99 »75 parts by weight of pure water without an antistatic agent. This solution, the ambient temperature and has a pH of 10.4, is then placed on a flat polycarbonate surface covered with condensed milk that could incubate for 1 month at room temperature, is dirty, sprayed. Spraying takes place at 2.11 atm (30 psig) for 45 seconds. Then the detergent solution Rinsed off with clean, cold water for about 30 seconds. After air drying, the resin surface is washed clean and free of water stains and film.

Example 3

The following detergent compositions are formulated and then dissolved in tap water at a concentration of 3 wt. #.

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A. B. 5.0 7.0 20.0 35.0 7.0 9.0 5.0 10.0 6.0 9.0 3.0 5.0 49.0 15.0 5.0 10.0

Ingredient composition

O21 dicarboxylic acid
Sodium metasilicate pentahydrate
Trisodium phosphate (anhydrous)
Sodium methylnaphthalene sulfonate
Tetrasodium pyropho sphat
Foam modifier (D)
Detergent builder (soda ash)
Sodium bicarbonate

(D) modified oxyethylated straight chain alcohol sold under the trademark PLURAFAC RA-43.

Detergent Composition A has a pH of 11.3 while Composition B has a pH of 11.7. Lexan polycarbonate sheet, which was incubated with condensed milk, for 2 weeks at room temperature, is contaminated, are immersed in the solutions 3A and 3B and 7 held at 65.6 ° C (150 ⁰ F) min. After removal from the detergent solutions, the panels are drained, rinsed with tap water and air dried. The Lexan sheet from both solutions is clean and free of water stains.

Example 4

40 parts by weight of the granular detergent of Example 1 are in 60 parts by weight of clean water dissolved. The aqueous C-21 dicarboxylic Detergent concentrate is a non-viscous, golden yellow colored liquid. Detergent use solutions are from this liquid concentrate by mixing 100 parts by weight the 40 # solution with 1273 parts of water. A 3% by weight working solution is obtained in this way.

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λ B. C. 6.0 - 6.0 - 6.0 3.0 33.0 33.0 30.0 7.0 7.0 7.0 7.0 7.0 7.0 30.0 -30.0 30.0 7.0
i, 'o ^c 7.0
4.0 ^Β
1.0 ^C 7.0
4.0 ^p
1.0 ^C

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Example 5

The following, C-21 dicarboxylic detergents are used mixed dry and then tested for their cleanability in dilute, aqueous solutions.

Ingredient composition

C-21 dioarboxylic acid
C-21 dicarboxylic sulfate
Soda ash (light)
Trisodium phosphate (anhydrous)
Tetrasodium pyrophosphate

Sodium Metasilicate (5H ₂ O) --- -

Sodium methylnaphthalene sulfonate

Foam modifiers

surfactant

Sodium bicarbonate 5.0 5.0 5.0

B and C - compare example 1

The above granular C-21 dicarboxylic detergents (A to C) are separately dissolved in water in concentrations of 3% by weight. After raising the temperature to about 65.6 ° C (150 ⁰ F) Lexan Polycarbcnatplatten be immersed in the aqueous solutions for 7 minutes. The Lexan polycarbonate sheets become soiled with condensed milk that has been allowed to incubate for about 2 months. After the detergent solutions have been removed, the polycarbonate sheets are rinsed with clean water for about 1/2 minute and then allowed to air dry. The plates cleaned with the appropriate detergent solutions A to C are all clear and free of dirt.

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Example 6 * IS ' 2 7 1 3 2 G 5

According to the method described in Example 5, 1% by weight of the following foam modifiers in each case separately in the agent of Example 5-A instead of the ethoxylated straight-chain alcohol (PLURAFAC RA-43) incorporated: sodium salt of dicarboxylic caprylic acid (MIRANOL J2M), disodium-N-tallow-ß-amino-dipropionate (DERIPHAT 154), nonylphenoxypolyäthylenoxyäthanol (IGEPAL CO 850), sodium sulfate of 2-ethyl-i-hexanol (TERGITOL 08).

3 percent by weight aqueous solutions of the above granular detergents are tested against condensed milk dirt according to the method of Example 4: In all cases, the polycarbonate sheets are shown clean and clear.

Example 7

A granular concentrate is made by iaan die the following materials, expressed in% by weight, dry mixed: C-21 dicarboxylic acid - 3, sodium metasilicate pentahydrate - 5 »sodium tripolyphosphate - 15» sodium bicarbonate 20, Sodium methylnaphthalene sulfonate - 5, sodium sesquisilicate (Builder) - 30, Sodium Sulphate (Builder) - 15, Ethylene Oxide-Ethylene Glycol Condensate as an antistatic agent (PLURONIC F68LF) - 2, and li-tallow-ß-aminodipropionate as surfactant (DERIPKAT 154) - 5.

The granular concentrate is dissolved in water at a concentration of 2 wt.%. The pH is 10.5. After the temperature has been adjusted to 87.8 ° C (190 ° F), polycarbonate plates soiled with incubated condensed milk are immersed in the solution. The dirt from the panels lifts off almost immediately. The plates are completely cleaned within 5 to 7 minutes, but they are immersed for a further 15 minutes. After removing the detergent solution, the plates are covered with

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Rinsed with water and air dried. The polycarbonate sheets are clear and clean.

Example 8

Removable containers are often soiled with aromatic and aliphatic organic materials, including motor gasoline, which have a tendency to lodge in the pores of the containers, survive cleaning of the containers, and then contaminate the food. The detergent compositions of the invention were tested in cleaning various containers in which isooctane, toluene and mixtures of isooctane and toluene were stored for a period of 14 days at room temperature. After this storage time, the organic liquids are poured out of the containers, then rinsed with water and then washed with the following detergent compositions: C-21 dicarboxylic detergent - 6, sodium metasilicate - 15, tetrasodium pyrophosphate - 14, sodium methylnaphthalene sulfonate - 7, showin iodifier - 4, Sodium Bicarbonate 5, Sodium Carbonate - 48, and Antistatic Agent-1; all percentages are expressed by weight. The detergents are used at a concentration of 3 % by weight in water and the containers are immersed at 62.8 to 65.6 ° C (145-15O ° F) for 2 minutes and then rinsed three times with water. The containers are filled with milk after cleaning above and stored at 2.78 ° C (37 ° F) for 10 days. The milk is then ijialyzed for residual hydrocarbons by gas chromatography using a Perkin-Elmer Model 900 instrument equipped with a flame ionization detector.

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709839/1079

ir 2209A '\% 27132G5

Analysis of the milk shows less than 0.5 ppm hydrocarbons for both glass and polycarbonate containers and after exposure to isooctane, toluene or a mixture from both connections. The only polyethylene container examined shows an isooctane content in the milk of 50 ppm. The 0.5 ppm hydrocarbons are the same analytical Result (comparison) obtained when the milk is analyzed in the same way, but not in a container, which was previously filled with hydrocarbon was kept. There was no odor of hydrocarbons in the milk to be established.

Example 9

The following detergent compositions are dirty in a concentration of 3 wt.% In water to clean of polycarbonate sheets, the old with 2 months of residues Eiscrememischung- and Kondensmilchschinmelpilzen used.

ABC

C-21 dicarboxylic acid

Sodium tripolyphosphate (alkali metal phosphate)

Alkali metal methylnaphthalene sulfonate
Sodium bicarbonate
Sodium metasilicate (alkali builder)
Sodium sesquisilicate (detergent builder)

Foam modifier (PLURAFAC RA-43) Detergent (EMPHOS TS-211)

antistatic agent (HALCO CPH-30-N)

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9 3 1 27 5 3 15th 15th 3 15th 7th 5 28 5 5 0 63 83 6th 0 0 0 1 0

709839/1079

The soaking cycle in the cleaning agents A and B is 7 min at 65.6 ⁰ C (150 ⁰ F), then 2 minutes rinsed with cold water. The panels are clean, good-looking, and have no water marks. The cleaner C requires a soaking time of 20 min 65.6 min at ⁰ C for removal of the same debris as the cleaner A and B during a soak time of 7th

Example 10

The following granular preparation is dissolved in water and used to clean and sanitize both glass and polycarbonate milk containers that are being taken back: Soda ash (tight) - 39.5, C-21 dicarboxylic acid - 1.5, PLURAFAC RA -43 as a foam modifier - 5.0, antistatic agent - 1.0, sodium tripolyphosphate - 10, sodium hexametaphosphate - 5, sodium stasilicate- 15, sodium bicarbonate -8, sodium diethylnaphthalene sulfonate - 3, and chlorinated trisodium phosphate - 12; all numbers are percentages by weight. The granular concentrate is used in a spray washing machine at a concentration of 2.3 to 2.7% by weight in water. The washing temperature is kept constant in Boreich 54.4 to 60, O ⁰ C (130 to 14O ° F). 3.8 l (1 gal.) Containers soiled with ice cream mixes from 2 seasons are inverted into a rack and the dishwasher started at a rate of 1 / min. The machine operates with a 4 min vertical spray wash cycle, a 5 min vertical spray wash rinse cycle and a 1 min vertical spray water rinse cycle. The rinse water is maintained at a temperature of about 48.9 ° C (120 ° F). The cleaning is very good as-. probably with the glass as well as with the Lexan polycarbonate containers with only two passages - through the dishwasher. The foam content also does not increase after operation for 30 minutes.

End of description.

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709839/1079

Claims (18)

Pennwalt Corporation IR 2209A claims 1. Granular detergent concentrate to dissolve in Water for cleaning soiled surfaces, characterized in that it essentially contains the following components, expressed as% by weight, contains: C-21 Dicarboxylic Detergent 1 to 9 Alkalibuilder 5 to 28 Alkali metal phosphate 5 to 27 Alkali metal methylnaphthalene sulfonate 1 to 15 Foam Modifier ~ 0 to 6 Sodium bicarbonate 5 to 15 Detergent builder 83 bis 2. detergent concentrate according to claim 1, characterized in that that the detergent builder is selected from the group sodium sulfate, sodium chloride, sodium sesquicarbonate, Sodium sesquisilicate, sodium carbonate, sodium bicarbonate and their mixtures. 3. detergent concentrate according to claim 1, characterized in that that the alkali metal phosphate is selected from the group sodium tripolyphosphate, tetrasodium pyrophosphate, Tetrapotassium pyrophosphate, trisodium phosphate, sodium hexametaphosphate and their mixtures. 4. detergent concentrate according to claim 1, characterized in that that the alkali builder is selected from the group consisting of sodium metasilicate, potassium metasilicate, sodium orthosilicate, Potassium orthosilicate and their mixtures. 709839/1079 ORIGINAL INSPECTED IR 2209A. £. 5 · Detergent concentrate to dissolve in water for cleaning contaminated surfaces by immersion, characterized in that it essentially contains the following components, expressed as% by weight, contains: C-21 Dicarboxylic Detergent 5 to 7 Alkalibuilder 10 to 20 Alkali metal phosphate 10 to 20 Alkali metal methylnaphthalene sulfonate 5 to 10 Foam modifiers 3 to 5 Sodium bicarbonate 5 to 10 Detergent Builders 62-28. 6. detergent concentrate according to claim 5, characterized in that the detergent builder is selected from Group sodium sulfate, sodium chloride, sodium sesquicarbonate, Sodium sesquisilicate, sodium carbonate, sodium bicarbonate and their mixtures. 7. detergent concentrate according to claim 5, characterized in that the alkali metal phosphate is selected from Group sodium tripolyphosphate, tetrasodium pyrophosphate, tetrasodium pyrophosphate, trisodium phosphate, sodium hexametaphosphate and their mixtures. 8. detergent concentrate according to claim 5, characterized in that the alkali builder is selected from the group Sodium metasilicate, potassium metasilicate, sodium orthosilicate, potassium orthosilicate and their mixtures. 9. Detergent concentrate that is particularly suitable for dissolving in water for spray cleaning soiled surfaces is characterized in that it essentially contains the following components, expressed as% by weight: 709839/1079 27132G5 IR 2209A .3 C-21 Dicarboxylic Detergent 1-2 Alkalibuilder 10 to 20 Alkali metal phosphate 15 to 27 Alkali metal methylnaphthalene sulfonate 2 to 5 Foam Modifiers 4 to 6 Sodium bicarbonate 5 to 10 Detergent builders 63-30. 10. detergent concentrate according to claim 9, characterized in that that the detergent builder is selected from the group sodium sulfate, sodium chloride, sodium sesquicarbonate, Sodium sesquisilicate, sodium carbonate ^ sodium bicarbonate and their mixtures. 11. detergent concentrate according to claim 9, characterized in that that the alkali metal phosphate is selected from the group sodium tripolyphosphate, tetranatriurapyrophosphate, Tetrapotassium pyrophosphate, trisodium phosphate, sodium hexametaphosphate and their mixtures. 12. Detergent concentrate according to claim 9 _f, characterized in that the alkali builder is selected from the group consisting of sodium metasilicate, potassium metasilicate, sodium orthosilicate, potassium orthosilicate and their mixtures. 13. Granular detergent concentrate according to claim 1, characterized characterized in that to about 99.5 to 98 parts by weight of the concentrate of claim 1 about 0.5 to 2 parts by weight of one antistatic agents have been added. 14. Granular detergent concentrate according to claim 1, characterized characterized in that about 99.5 to 95 parts by weight of the 709839/1079 IR 2209A. if The concentrate of claim 1 about 0.5 to 5 parts by weight of one surfactants have been added. 15 · Granular detergent concentrate according to claim 1, characterized characterized in that to about 99 to 97 parts by weight of the concentrate of claim 1 about 1 to 3 parts by weight of dichloroisocyanurate have been admitted. 16. Granular detergent concentrate according to claim 1, characterized characterized in that for about 95 to 88 parts by weight of the concentrate of claim 1 about 5 to 12 parts by weight are chlorinated Trisodium phosphate have been added. In that it contains 17 Aqueous detergent solution, characterized in that substantially water and about 0.25 to 40 wt.% Concentrate of claim 1. 18. Aqueous detergent solution, characterized in that it is essentially V / water and about 0.25 to 40% by weight of concentrate according to claim 5 contains. 19. Aqueous detergent solution, characterized in that it contains essentially water and about 0.25 to 40% by weight of concentrate according to claim 9. -U- 709839/1079