DE1045584B - Liquid detergent - Google Patents

Description

The invention relates to liquid cleaning agents which are clear aqueous solutions.

Liquid organic soap-free detergents have advantages in terms of convenience of use and are used extensively for lighter washing processes, ζ. Β. Dish washing and washing easily soiled textiles. However, it has proven difficult to use liquid, for rough wash purposes to create suitable cleaning agents, e.g. B. for washing heavily soiled cotton items, and therefore, heretofore, powdered organic, non-soap detergents have been highly preferred for such purposes. To successfully compete with powder detergents for rough washing purposes to be able to, a liquid agent would have to be highly concentrated, have a strong cleaning power and the Have the ability to prevent the dirt removed during washing from being drawn back onto the laundry item to prevent. This repositioning of dirt during washing is powdery for many organic anionic soap-free detergents by incorporating salts of the Cellulose methyl ether carboxylic acid has been reduced or prevented. However, it was found that if Salts of cellulose methyl ether carboxylic acid are incorporated into concentrated liquid cleaning agents, These agents tend to become cloudy, especially at low temperatures, and become flaky Precipitation can be excreted. This affects the appearance of the product and can be Decrease effectiveness due to the excretion of active ingredients.

It is also already known to use cellulose sulfuric acid esters in powdered anionic detergents containing detergents. These well-known fixed compilations contain so little active cleaning agent (at most 10%) and such large quantities of inorganic constituents that it it is completely impossible to produce clear, concentrated solutions of the organic cleaning agent therefrom. There is not the slightest hint that cellulose sulfates differ from cellulose glycolates behavior. These known detergents do not give clear concentrated solutions and also do not provide any information on how such solutions could be produced.

The deficiencies outlined at the outset are now eliminated by the invention. The new cleaning agent in the form of an aqueous solution which is clear at ordinary temperature and has a content of 10 to Is weight percent of one or more organic, anionic, soap-free detergents characterized in that it is essentially free of inorganic salts and no more than 5, pre-liquid cleaning supplies

Applicant:
Unilever NV, Rotterdam (Netherlands)

Representative: Dr.-Ing. A. van der Werth, patent attorney, Hamburg-Harburg 1, Wilstorfer Str. 32

Claimed priority:

V. St. v. America June 2, 1952

Lloyd Fisher Henderson, Fairlawn, Bergen, N.J.,

and William French Hunnewell,

Waterford, New London, Conn. (V. St. A.),

have been named as inventors

preferably between 0.5 and 4 percent by weight of a cellulose sulfuric acid ester, in particular sodium cellulose sulfate, contains.

Cellulose sulfuric acid esters which can be used in the agents according to the invention can by the action of sulfuric acid on a cellulosic material. Cellulose sulfuric acid esters useful in accordance with the invention can be conveniently prepared by the method of U.S. Patent 2,539,451. Low viscosity products are special suitable, but products of medium viscosity can also be used.

Cellulose sulfuric acid esters are acidic and are preferably used for the purpose of forming salts neutralized according to the invention. This neutralization can take place before the ester is incorporated into the means of the invention are carried out. The acidic ester can also be used as such and in situ in the liquid agent by the addition of a base, e.g. B. an organic amine, are neutralized. The cellulose sulfuric acid esters can be in the form of their alkali salts, e.g. B. of potassium, sodium and Ammonium salt, and in the form of the salts of organic amines ,, ζ. B. the salts of mono-, di- and triethanolamine, to be used.

As little as 0.025 percent by weight of the cellulose sulfuric acid ester is generally used cause an improvement in the cleaning power of the agent. Amounts greater than 5 percent by weight can cause the solution to become cloudy. Usable in the agents according to the invention organic anionic soap-free detergents include the water-soluble salts of organic suI-

«W 697/541

Claims (2)

3 4 fonsäuren and alkylsulfuric acids with cleaning- Others incorporating the agents according to the invention, z. B. the Alkylarylsulfonate, Alkylsulfate raw components are perfumes, which for the over- and alkyl sulfonates. Preferably are sulfated «cover the odor of an existing organic polyethoxylated alkylphenols of the formula ■ may be required, dyes and amines s . 5 fluorescent whiteners. R- <> -A- (CH ₂ CH ₂ O) ₂₅ -CH ₂ CH ₂ OSO ₃ M \ / Example 1 used, where R is a straight or branched chain hydrocarbon group, which is saturated or composed of the following components: unsaturated and 8 ^ iS 18 carbon atoms can be ίο the ammonium salt of sulfated poly, A is oxygen or sulfur 5 a number ethoxylated nonylphenol , made from 3 to 8 and M can be hydrogen, an alkali metal or an organic amine radical _{from non-lphenol and} 5 _{moles of ethylene.} Examples of oxide 10 0% groups which R can represent are n-octyl, sodium ciluose sulfaV. '.'. '.'. '.'. '.'. '.'. '.'. '.'. '.'. 0> / σ tert-octyl, nonyl and dodecyl. 15 mixed To increase the foaming power of liquid organic higher fatty acid diethanolamides 5.0% non-anionic, soap-free cleaning agents lauryl diethanolamide 5.0 »/» With a content of sulfated polyathoxylated morphine phenyl polypropylene sulfonate ... 15.0% To improve alkylphenols, a second polyethylene glycol (molecular weight 600) 5.0% anionic cleaning agent, preferably em sul- ao morpholine .... 200% Fatty alcohol or an alkyl aryl sulfonate, added to water, perfume, dye, etc. ....... 39 ^ 5%. will. Suitable alkyl aryl sulfonates for use The above agent remained at temperatures up to 7 ° C According to the invention, the sulfonated alkylbenzenes are clear. When diluting with water to a concentration in which the alkyl group of polypropylene off 25 concentration of 0.14% had the composition has a _pH value directs is. . of 8.9. At-soiel 2 The anionic detergents can be used as alkali ^F salts, e.g. B. Sodium, Potassium and Ammonium Salts A liquid detergent was prepared or can be incorporated in the form of the free acids, from the following components: which in situ in the detergent solution by 30 _{ammonium salt of su} lf _at iertem, poly- the addition of an organic amine or of amethoxylated nonylphenol monium hydroxide can be neutralized. The one from nonylphenol and 5 moles of ethylene oxide 13.0% Use of such salts of ammonium or orga- lauryl diethanolamine 3.0% A higher concentration of phenylpolypropylenesulfonic acids 13.0% can result in nic amines. anionic detergent in the solution than with 35 _sodium cellulose sulfate 0.65% Use of the alkali salts enable and reduce triethanolamine 20.0% avoids a high concentration of sodium ions, polyethylene glycol (molecular weight 150) 14.0 »/» which precipitation of the cellulose sulfuric acid ester water, perfume, dye etc 36.35% In addition, solvents containing ammonium or organic amine salts can cause solvents such as these. -18 ° C with slight thickening. Upon dilution, the amount of the anionic, the combinations with water to a concentration of 0.15% had to be incorporated according to the invention the cleaning solution has a _pH value of 8.6. means can be between 10 and 40 percent by weight of. . Total amount. Preferably, between 20 and 30 percent by weight of anionic cleaning agents are used. from the following components: ^D ui ^Re i ⁿ Jf ^U. ? ^gS ~ Γ * ¹ c ^{h ow capacity of} the agents ammonium salt of sulphated, poly- according to the invention can also be prepared by incorporation of ethoxylated nonylphenol from from the reaction of fatty acids having 10 to 50 _{from phenol and 5 moles Äthyletloxyd} ... _12, 9% 18 carbon atoms and dialkylolamines contain sodium cellulose sulfate 0.7% borrowed fatty acid dialkylolamides are improved. Mixed higher fatty acid diethanol x ¹ liquid cleaning agent according to the invention amide 2 5% were found to be most effective when in lauryl diethanoiamide ''.'.'.'.".'.'.'.'.'.'.'.'.'.'.'.'.'. 2.5 «/ 0 a washing solution with a pH of 7 to 10.5, 55 phenylpolypropylenesulfonic acids 13.0% and preferably from 8 to 9 can be used. Em triethanolamine 13.0% organic amine can be added to the agent, diethylene glycol 19.4% to assist in the maintenance of the p _H -value within _{Wagserj Parfüiri) dye 36j etc} 0% half of the area to participate. Suitable wet nurse are the strongly basic, water-soluble amines, ζ. B. 6o The above remedy stayed clear at temperatures up to Diethanolamine and triethanolamine and morpholine. Usually -18 ° C with slight thickening. When diluting 5 to 25 percent by weight of the amine, based on a concentration of 0.15% with water on the means to be sufficient. the solution has a _pH value of eighth The amount of water that the liquid means according to the invention without becoming cloudy, can withstand 65 claims: can, can by adding a polyethylene glycol 1. Cleaning agent in the form of an enlarged will. Clear aqueous solutions are preferably used at this temperature Purpose of polyethylene glycols with a molecular weight of 10 to 40 percent by weight used from 150 to 6000. Preferably 5 to one or more organic anionic 20 weight percent polyethylene glycol used. 70 soap-free cleaning agents, thus identifiable 5 6 draws that it is essentially free of inorganic compounds, the salt of a sulfated, polyethoxylated one nic salts and not more than 5, preferred alkylphenols and optionally also an alkyl wise contains between 0.5 and 4 percent by weight of an aryl sulfonate. Cellulose sulfuric acid esters, especially Na- trium cellulose sulfate. 5 2. Cleaning agent according to Claim 1, characterized in that the documents considered: characterized in that it is used as an anionic cleaning agent. ι 80S-697/541 11.5 »