JPH01268795A - Detergent composition - Google Patents

Abstract

PURPOSE: To obtain the composition, specially, for fabric washing which comprises an anionic surfactant, specific two nonionic surfactant mixtures, and fatty acid monoethanol amide and assists soil removal and suspension in washing liquid.

CONSTITUTION: This composition contains (A) preferably 4.5-18 wt.% anionic surfactant, (B) (i) preferably 0.5-5 wt.% nonionic surfactant with an HLB above 10.5 (ii) preferably 1.5-6 wt.% nonionic surfactant with an HLB below 10.5, and (C) preferably 1-4 wt.% fatty acid monoethanol amide of a 10-18C (preferably 12-14C alkyl chain.

COPYRIGHT: (C)1989,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition 7, in particular a combing detergent composition for cleaning textiles. Textile detergent compositions contain as an essential ingredient a detergent active system v1 which serves to aid in the removal of soil from fabrics and its suspension in the washing liquid. Suitable detergent actives include a number of classes including anionic and nonionic substances.

In such detergent active systems it is known to contain mixtures of anionic and nonionic detergent actives, such as alkylbenzene sulfonic acids. The latter can be classified according to their day L[3, and it has been proposed in the related art that they operate particularly at low temperatures.

Such compositions are described, for example, in the British Patent Specification @G [
31241754 (LJ n1lever L 1m1
ted/G 1lbert).

We have shown that the performance of such compositions, especially with respect to the removal of oil-based stains, is similar to that of fats with alkyl chains of a certain length.
It has been discovered that further improvement can be achieved by adding t-noethanolamide.

According to the invention, therefore, anionic detergent actives, and ii) nonionic detergent actives whose HLB is less than 10.5, and ii) nonionic detergent actives whose HLB is less than 10.5. and iii) the number of carbon atoms in the alkyl chain is 10 to 18,
A detergent composition comprising a detergent active system comprising a nonionic detergent active mixture of fatty acid monoethanolamides, preferably 12 to 14, is obtained.

We recognize that fatty acid monoethanolumiates are unknown as ingredients in textile detergent compositions. However, for example G B 1529454 (Henkel) describes their use in compositions containing aluminosilicate builder substances. The use of fatty acid monoethanolamides in such compositions is said to provide many benefits including foam control. However, it was not anticipated that fatty acid E-noethanolamides with alkyl chain lengths of certain lengths could provide a detersive effect in compositions containing both anionic and mixed nonionic detergent actives. Ta.

Preferred compositions of the present invention have a total weight of 2.
% to 50%, for example 7.5% to 30% detergent actives.

The proportion of ionic detergent actives is 4.5% by weight of the composition.
% to 18%, for example 6% to 12%.

Non-ionic substances with higher HLB range from 0.5% to 4% by weight
, and lower HLB materials can be present at 1.5% to 6%, most preferably 2% to 4%. Fatty acid ethanolamide is effective at 1% to 4% of the weight of the composition. The ratio of anionic surfactant to nonionic surfactant is 5.5:1 to 1; 1.2, preferably 2.25.
:1 to 1:1. Preferably, l of ethanolamide is equal to or exceeds the amount of each of the two nonionic substances mentioned above.

The anionic detergent active may be a conventional water-soluble alkali metal salt of an organic sulfonic acid having an alkyl group containing from about 8 to about 22 carbon atoms. However, the term alkyl is used to include the alkyl portion of higher acyl groups. Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl (09-C2o) benzenesulfonates, especially linear secondary alkyl (Cio-Cts) sodium benzenesulfonates: sodium alkyl glyceryl ether sulfates, especially tallow. or ethers of higher alcohols derived from coconut oil and ethers of synthetic alcohols derived from petroleum; Reaction products of sodium and potassium salts of sulfuric acid esters - alkylene oxides, especially ethylene oxide; Nisderization of fatty acids such as coconut fatty acids with isethionic acid;
Reaction product neutralized with sodium hydroxide; sodium and potassium salts of aliphatic amide of methyltaurine; α-
Alkane monosulfonates and paraffins, such as those derived by reacting olefins (C8-C2o) with sodium bisulfite, are combined with SO2 and C12
Alkane monosulfonates, such as those derived by reacting with olefins and then hydrolyzing with a base to produce random sulfonates; SO3
It is used to neutralize the reaction product and then hydrolyze the reaction product to remove the resulting substance).

Suitable nonionic surfactants that can be used are compounds having hydrophobic groups and reactive hydrogen atoms, such as aliphatic alcohols, acids, amides or alkylphenols, and alkylene oxides, especially ethylene oxide alone or together with pyrene oxide. is the reaction product of Certain nonionic detergents are the condensation products of ethylene oxide with primary or secondary linear or branched alcohols, and the products obtained by the condensation of ethylene oxide with the reaction products of propylene oxide and ethylene diamine.

Suitable non-ionic surfactants are described in British Patent Specification B
G 81460646 (The Proct
er & Gamble Company).

Alkylene oxide adducts of fatty substances can be used as nonionic surfactants. The number of alkylene oxide groups per molecule is the HL of the nonionic surfactant.
has an important influence on B. The chain length and nature of the fatty material also has an influence, so the desired number of alkylene oxide groups per molecule depends on the nature of the fatty material and the chain length.

Typical nonionic surfactants with low 111B are ethoxylated straight-chain Al'-
It is le. The HLB of such material is approximately 8.3. High H
A typical nonionic material for LL3 is a similar material with an average of 7 ethylene oxide groups per molecule. These have an HLB of approximately 11.7.

The fatty acid monoethanolamides used in the present invention are derivatives of individual fatty acids or mixtures of fatty acids having a chain length of 10 to 18 carbon atoms, preferably 12 to 14, and are of natural or synthetic origin. Any is fine. Fatty acids can be either saturated or unsaturated. Mixed fatty acids derived from natural sources, such as derivatives of fatty acids obtained from coconut fat, are particularly suitable. It is also possible that a small amount of the total fatty acid monoethanolamide material is derived from fatty acids with alkyl chain lengths outside the above ranges. Examples of useful fatty acid monoethanolamides are the following compounds: ψ lauric acid monoethanolamide; coconut fatty acid monoethanolamide; palm kernel fatty acid monoethanolamide; myristic acid monoethanolamide; Materials derived from palmibunic acid and stearic acid are less desirable.

We advantageously include, in addition to the fatty acid monoethanolamide, an amine oxide having at least one alkyl or alkenyl chain containing from 10 to 22 carbon atoms, for example from 0.1% to 4% of the steps. I discovered that. For example, coconut amine oxide.

Besides the substances listed above, the compositions of the present invention can also contain other surface-active substances, such as those of the amphoteric, zwitterionic and cationic detergent active substance types. Such additional surfactant material should only be present at the retention rate of the adhesive.

The compositions of the present invention may include a detersive builder that has the ability to reduce the free calcium ion concentration of the detergent solution. Another advantage of the presence of a builder (when such substances are water-soluble) is the generation of an alkaline pH, in which the composition of the invention has a concentration of 1 g/l i in distilled water at 25°C.
I! at least 8, preferably at least 1
It is desirable to indicate 11)1 of 0.

When the composition of the invention comprises a detersive builder substance, this may be any substance that is capable of reducing the level of free calcium ions in the washing liquid and also inhibits the formation of alkaline f)H and its removal from the fabric. It would be desirable to provide the composition with other advantageous properties, such as a soil suspending effect.

An example when an inorganic detersive builder containing phosphorus is present is a water-soluble salt, especially the alkali metal viroline! [Includes orthophosphates, polyphosphates, and phosphonates. Specific examples of inorganic phosphorus III salt builders are tripolyphosphoric acid, orthophosphoric acid and sodium and potassium hexametaphosphates.

Examples of phosphorus-free embodiments when detersive builders are present include water-soluble alkali metal carboxylates, bicarbonates, silicates, crystalline and amorphous aluminosilicates.

Specific examples are sodium carbonate potassium chloride (with or without scab seeds),
bicarbonate and sodium and potassium silicates.

Examples when the presence of organic detersive builders are avoided include alkali metal, ammonium and substituted ammonium polyacetates, carboxylates, polycarboxylates, polyacedelcarboxylates; sylates, polyhydroxysulfonates. Particular examples are the sodium, potassium, lithium, an[nium and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, 0,X-sydisuccinic acid, mellitic acid, benzene polycarboxylic acid and citric acid.

In addition to the components already mentioned, several optional components can also be present.

Examples of other ingredients that may be present in the composition are fabric softeners such as fatty siamin, fabric softening clay materials and bleaching agents such as sodium borate and zitorium percarbonate, peroxy acid bleaches. chlorine-releasing bleaches such as trichloroisocyanuric acid, R-free salts such as sodium Ia-acid, as well as fluorescent agents, which are usually present in small quantities,
i! such as fragrances, proteases and amylases! ? Contains chemicals, fungicides and colorants.

The compositions of the invention may be in any suitable form, in particular powders, but also bars, liquids, and pastes, and may be prepared in many different ways depending on their physical form.

Granular products can be prepared by dry mixing or agglomeration. A desirable physical form is a granule containing the detersive virgoos salt, which is most readily produced by spray drying at least a portion of the composition. In this method, a slurry is prepared containing heat-resistant components of the composition such as a surfactant system, a builder substance and a filler salt, the slurry is spray dried to form a powder granule base, and the slurry is spray dried to form a powder granule base. Mix the granules with any solid, non-heat-stable ingredients such as bleach and enzymes. The aforementioned nonionic surfactants and fatty acid monoethanolamides can be liquefied by melting or solvent dissolution and sprayed onto the base powder granules without being included in the slurry for spray drying. When we spray all the monoethanolamide and nonionic surfactants onto the base powder granules, we first spray the monoethanolamide onto the hot base powder granules (above 50°C) and then the high 1- IL
It was observed that spraying the B nonionic followed by the low HLB nonionic resulted in higher bulk densities. Lower l
; A high bulk density can be obtained. Alternatively, the nonionic surfactant, or portion thereof, and/or ethanolamide and/or amine oxide may be bound to a suitable porous carrier material and dry mixed with the spray-dried powder. Suitable carrier materials include water-soluble salt-free salts. The invention is described in more detail in the following examples, which are not intended to be limiting.

Examples 1A-1F Wash solutions were prepared in water with a hardness of 25°F)-1 (corresponding to a free calcium ion concentration of 2,5×10′moles). The cleaning solution contains 6 g/fJ equivalents of a composition (in Shigenobu) containing:

DO8-113 (anionic detergent activity) 9% nonionic surfactant as previously mentioned 4% sodium tripolyphosphate 23% butrium IF acid 6% sodium alkali silicate 55% sodium sulfate
30.8% sodium chloride
2.93% water
The remaining sodium chloride was included as an ionic titer corresponding to the 5% sodium perborate hydrate that would actually be present. Bleach is excluded from these experiments to avoid confusion between detergency and bleaching effects in the interpretation of results.

The wash solution of Section E was used to wash the fabric loads at a wash solution to fabric ratio of 50:1. The load consisted of several polyester monitors to which had been previously applied the standard 014-labeled triolein. Standard radioactive tracer techniques were used. Measurement of labeled triolein levels after washing indicates the detergency obtained, ie the degree of soil removal.

Washing time was 20 minutes under stirring at 70 rpm. Washing was performed isothermally at 40°C.

In addition to the anionic surfactants listed above, nonionic materials were included in the composition in various combinations, including: E7 [having an HLB of about 11.7]. C13/15 alcohol ethoxylated with about 7 moles of ethylene oxide per molecule.

E3: C13/15 alcohol ethoxylated with about 3 moles of ethylene oxide per molecule with an HLB of about 8.3.

CEA: Coconut heptanoethanolamide.

The details of the tested composition and the results obtained were as follows: 11W11 E7 (%) [3 (%) CEA (%) Cleaning power 1A 1 3 0 45.
118 1 2 1 49.8I
C11256,3 1D 1 0 3 54.3I
E O1349,3 These results indicate that E7. Although the total ■ of E3 and CEA is the same (4%), in Example 1C,
It shows that the highest detergency results are obtained when all three components are present. Example 1B with all three ingredients
exceeds Example 1A, which includes only E7 and E3.

In Example 1B, when 0.5% CEA was replaced with the same cocono-tuamine oxide, all other conditions remained the same, the detergency was further improved to % SO,O.

Good results are also obtained when CEA is replaced with tallow fatty acid ethanolamide.

Examples 2Δ and 2B In a separate series of experiments, the steps of Example 1 were repeated to prepare the same composition as Example 1C and the compositions with the nonionic surfactants E3 and [7 replaced by E5. compared with things. where E5 is a C13/15 alcohol ethoxylated with about 5 moles of quaternary ethylene site per molecule with a 4LB of about 10.0.

The results were as follows:

Claims (8)

[Claims] (1) an anionic detergent active; i) a nonionic detergent active with an HLB of 10.5 or more; ii) a nonionic detergent active with an HLB of less than 10.5; and iii) a nonionic detergent active with an HLB of less than 10.5; A detergent composition comprising a detergent active system comprising a nonionic detergent active system which is a mixture of fatty acid monoethanolamides having from 10 to 18 carbon atoms, preferably from 12 to 14 carbon atoms. (2) the amount of anionic detergent active is 4 by weight of the composition;
．． A composition according to claim 1, which is between 5% and 18%. (3) The level of the nonionic substance with a higher HLB is between 0.5% and 4% of the weight of the composition, and the level of the nonionic substance with a lower HLB is between 1.5% and 4% of the weight of the composition. 3. A composition according to claim 1 or claim 2, wherein the composition is 6%. (4) The amount of fatty acid ethanolamide is 1% to 4% of the composition
% of the composition according to any one of claims 1 to 3. (5) A composition according to any one of claims 1 to 4, wherein the ethanolamide is derived from a fatty acid having 12 to 14 carbon atoms. (6) The total amount of anionic and nonionic detergent actives is from 7.5% to 30% of the weight of the composition.
5. The composition according to any one of 5 to 5. (7) further comprising an amine oxide having at least one alkyl or alkenyl chain containing from 10 to 22 carbon atoms, the amine oxide containing 0.1 of the weight of the composition;
A composition according to any of claims 1 to 6, wherein the composition is present in an amount of ~4%. (8) The composition according to any one of claims 1 to 7, which is in the form of granules and contains a detersive builder.