JPH0234700A - Liquid detergent composition - Google Patents

Abstract

PURPOSE: To provide a stable liquid detergent composite causing no phase separation even when stored for a long period by further containing an electrolyte in the aqueous composition containing respective specified quantities or more of a non-soap synthetic surfactant and soap.

CONSTITUTION: In an aqueous detergent composition containing 7.0wt.% or more of a non-soap synthetic surfactant and 5.0wt.% or more of soap, an electrolyte (e.g.; Na₂SO₄, NaCl) of a quantity sufficient for forming a lamella phase having solid suspending performance by the soap and the non-soap synthetic surfactant, preferably, 1 wt.% or more, is contained, preferably, with an inorganic builder (e.g.; sodium tripolyphosphate) being constituted as a part or all of the electrolyte to regulate pH, whereby a composite with a pH less than 12.0 which shows only 2% by capacity or less of phase separation after storage at 25°C for 21 days is provided.

COPYRIGHT: (C)1990,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides that at least a portion of the surfactant is a structured phase capable of suspending solid particulate matter.
e).

One or more surfactants, typically soap or non-soap synthetic surfactants, are included in the detergent compositions described above. Soap has multiple functions,
It is a particularly useful substance that can be used as a detergent active, as a builder and as a fabric softener. Therefore, it is highly desirable to prepare liquid detergents containing relatively large amounts of soap. For isotropic liquids containing little or no inorganic builders, it is relatively easy to increase the soap content. However, it is very difficult to incorporate a large amount of soap into the above-mentioned aqueous structural liquid.

Aqueous structured liquid detergents containing one soap with solid suspension ability are EP-A-38,101, EP-A-86,
614 and [P-^-151,884.

Also, the applicant's EP-301,883 and EP-30
1, 884, 8 Mei [Also described in IIJ (unpublished). However, the nature of the soap formulated in the composition described in the above specification is that it contains a -f amount of non-soap synthetic surfactant to ensure excellent cleaning performance, while containing a fabric softener. and/or as a builder. In addition, these compositions are unstable and lose 2% by volume when stored at 25°C for 21 days.
In addition to causing the above-mentioned phase separation, it is also difficult to pour out due to its high viscosity.

The aqueous liquid detergent composition provided by the present invention contains 7%
A non-soap synthetic surfactant as described above and at least 5% by weight of a soap, and an electrolyte in an amount sufficient to cause the soap and non-soap synthetic surfactant to form a lamellar phase having solids suspension capabilities. Further, the composition is heated at 25°C.
It shows less than 2% phase separation after storage for 21 days at 1000 ml and has a p8 of less than 12.0.

It is very surprising that a stable and pourable lamellar structured liquid can be prepared using the amounts of soap and other ingredients as defined in the present invention. To the best of the applicant's knowledge, there has been no example of successful preparation of a composition that satisfies the qualitative and quantitative requirements described in F.

The compositions of the invention are stable, preferably at 21°C at 25°C.
Even after storage for days, phase separation of less than 2% by volume is exhibited.

When phase separation occurs, separate phases appear or multiple "cracks" are formed that are primarily composed of an aqueous phase containing dissolved electrolyte. It preferably has a viscosity of 2.5 PaS or less, most preferably 1.5 Pas or less, particularly 1Pa5 or more IZ, and is pourable.

The compositions of the present invention require -1 min of electrolyte to form a lamellar phase with the soap/surfactant to have solid suspension ability. The type and type of electrolyte suitable for a given soap/surfactant can be selected using methods known to those skilled in the art. Various methods described in numerous publications are used, such as methods for measuring lightning conductivity. Methods for detecting the presence of the lamellar phase described above are also known and can be detected, for example, by optical electron microscopy or by x'm diffraction.

In this specification, electrolyte refers to any water-soluble salt.

The amount of electrolyte must be sufficient to form a lamellar phase with the soap/surfactant to provide solids suspension ability. The composition preferably has at least 1.0
% by weight, more preferably at least 5.0% by weight, most preferably at least 17.0% by weight electrolyte.

Electrolytes can be cleansing builders such as thorium tripolyphosphate or non-4unct+on compounds such as sodium sulfate or sodium chloride.
al) 1 solution is also good. Preferably, the inorganic builder constitutes at least a portion of the electrolyte.

The composition must suspend particulate solids.

Particularly preferred are systems in which the particulate solids are actually suspended. The particulate solid may be an undissolved electrolyte, or may be the same or different from the electrolyte in solution. In the latter case it is saturated with electrolytes. Additionally or alternatively, the particulate solid may be a material that is substantially insoluble in water.

Examples of substantially water-soluble materials include aluminosilicate builders and calcite abrasive particles.

The composition of the present invention contains soap as an essential ingredient. The soaps are usually alkali metal soaps of fatty acids (preferably fats M containing 12 to 18 carbon atoms). Typical examples of the acids mentioned above are oleic acid, ricinoleic acid, castor oil,
Fatty acids derived from rapeseed oil, peanut oil, coconut oil, palm kernel oil, or mixtures thereof. Although sodium or potassium soaps of these acids may be used, potassium soaps are preferred.

The compositions of the present invention contain as an essential ingredient a non-soap synthetic surfactant. Such surfactants are selected from materials known in the art for forming structured liquids, and are usually selected from 7-ionic, cab-ionic, nonionic, zwitterionic and amphoteric surfactants.

A combination of non-soap surfactants consisting of a) a nonionic surfactant and/or a polyalkoxylated anionic surfactant and b) a non-polyal]xylated anionic surfactant is preferred.

Particularly suitable nonionic surfactants for use are compounds having hydrophobic groups and reactive hydrogen atoms (for example aliphatic alcohols, acids, amides or alkylphenols) and alkylene oxides (in particular ethylene oxide, or dibourene oxide and pyrene oxide). combination). Particularly preferred nonionic detergent compounds are:
Al(C6-C22) phenol-ethylene oxide condensate, aliphatic (C-C18) primary or secondary;
These are a condensate of a linear or branched alcohol and ethylene oxide, and a condensate of ethylene oxide condensed with a reaction product of propylene 1-site and ethylene diamine. Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary bosphines, quaternary cytos, and sialyl sulfoxides.

Anionic surfactants are usually water-soluble alkali metal salts of organic sulfuric and sulfonic acids having alkyl groups of 8 to 22 carbon atoms. The term "alkyl" herein includes the alkyl portion of a higher acyl group. Suitable synthetic anionic detergent compounds include sodium and potassium alkyl Va acids, especially tallow or tallow (C-Ci).
a) Sodium and potassium alkyl (C9-C2o) penvinsulfonates obtained by sulfating alcohols, especially sodium and potassium straight-chain secondary alkyl (C1o-01,) penvinsulfonates; Sodium glyceryl ether sulfate, especially higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum;
Sodium salts of coconut oil and fatty acid triglycerides and sulfonic acids; sodium and potassium salts of sulfate esters of higher (C-018) fatty alcohol-alkylene oxide (especially ethylene oxide) reaction products; reaction products of fatty acids, e.g. Oak fatty acids are esterified with isethionic acid and neutralized with sodium hydroxide; sodium and potassium salts of methyltaurine fatty acid amide; alkane monosulfonates, such as α-olefins (C-
02□) obtained by reacting with zitorium bisulfite and by hydrolyzing paraffins with base to produce SO and C12 reactor random sulfonates; olenoin sulfonates, i.e. olefins. In particular, a substance obtained by reacting C1o-C2oα-olefin with SO3 and then neutralizing and hydrolyzing the reaction product is exemplified. Preferred anionic detergent compounds are alkyl (C11
-C15) Sodium benzenesulfonate and sodium alkyl (016-Cl8) sulfate.

It is preferred that the composition of the present invention contains a builder in addition to the soap. Preferably, the non-soap builder is present in an amount of at least 5% by weight, with a preferred maximum amount of 30% by weight. Detergent builders can be any substance that can reduce the amount of free calcium ions in the wash liquor, and provide compositions with other beneficial properties such as alkalinizing the pH and suspending soils removed from fabrics. Preferably.

Detergent builders are classified as inorganic, organic non-polymeric and organic polymeric materials. It is generally preferred that an inorganic builder constitute part or all of the electrolyte (but water-soluble).

Examples of phosphorus-containing trowel-free detergents include water-soluble salts, especially pyrophosphoric acid, orthophosphoric acid.

Alkali metal salts of polyphosphoric acid and phosphonic acid are exemplified. Particularly preferred inorganic phosphate builders are the sodium and potassium salts of tripolyphosphoric acid, phosphoric acid and hexametaphosphoric acid.

Examples of phosphorus-free inorganic detergents include water-soluble alkali metal salts of carbonic acid monobicarbonate, silicic acid, and crystalline and amorphous aluminosilicic acids. Particular examples include zitorium carbonate (optionally containing calzite seeds), potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium silicate and potassium silicate.

Examples of organic cleaning agents include alkali metal, ammonium and substituted ammonium salts of polyacetic acids, carboxylic acids, polycarboxylic acids, polyacetylcarboxylic acids and polyhydroxysulfonic acids.

Particular examples include sodium, potassium, lithium, ammonium and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, mellitic acid, benzene polycarboxylic acid and citric acid.

In addition to the above-described components, various optional components may be present in the composition of the present invention. For example, alkanolamide,
Foam promoters, suds suppressants such as L-noethanolamide derived from palm kernel fatty acids and Kobutsu fatty acids, oxygen-releasing bleaches such as sodium perborate and bohtrium percarbonate, peracid bleach precursors, Chlorine-releasing bleaches such as isocyanuric acid, inorganic salts such as sodium sulfate, and usually trace amounts of fluorescent agents, fragrances, enzymes such as proteases and amylases, and disinfectants.

Colorants and fiber softening clays may also be present.

The pH of the composition is preferably 7.0 or higher, more preferably 7.0 to 12.0, particularly preferably 7.0 to 11.0,
Most preferably it is 7.0 to 8.0.

The compositions of the present invention may be manufactured according to common manufacturing methods for liquid detergent products known in the art. However, the order of addition of the ingredients is important.

Preferably, the soluble electrolyte is added to the water while mixing is continued, followed by the addition of the insoluble material such as the aluminosilicate and the reviving material. The mixture is then cooled to below 30°C, and then trace amounts of optional ingredients are added. Finally, if necessary, the pH of the composition is adjusted, for example, by adding a small amount of an alkaline substance.

The composition of the present invention is diluted with water during normal use to give -1-.

A washing liquid is formed which preferably contains 0.1 to 10@91%, more preferably 0.5 to 3% of the 2-group acid.

The washing liquid thus formed is used, for example, to wash the IN using an automatic washing machine.

Below, non-limiting examples of the invention are presented.

Friend Yujre-ΣU Friend 1" L Shiyudan *)Usage prohibited mmi shiyu 艮 (Unit W/W) Tomo Jl[17 Xl”L Ha-LAS Synperonic A3 STP K oleic acid Ha(1! glycerol borax Antifoaming agent enzyme fluorescent agent C.H.C. water 1% 4.1 3.0 15.0 10.0 2.0 4.85 3°10 0.20 0.5 0.1 0.1 Remaining part Ha-LAS synperon+c A3 STP K oleic acid PEG 400 Alcosperse 175 T.S. a2S04 glycerol polatchus Antifoaming agent enzyme fluorescent agent C.H.C. water V amount% 6.0 4゜O 15, O io,.

3.0 1.0 0.5 0.5 4.85 3.10 0.2 0.5 0.1 0.1 Remaining part The viscosity of the composition is approximately It was.

8801 Pas (215 ec-') and the viscosity of the composition is approximately 880 mPa5 (215 ec-'
) There was '1'.

The abbreviations and product names in the above examples are as follows.

LAS: Dedosylbenzene sulfonate CDE
A: Coconut diethanolamide 5CHC: Sodium carboxymethylcellulose STP Nitripolyphosphate Ptrium STS
:Toluenesulfonic acid thorium PEG 400
:Bori J Chylene Gly: 1-L (Average Minute F 400) Alcosperse 115 Niacrylic Acid/Maleic @ (70/30) Copolymer (Molecular Weight 20,0000X^Ico) Synperoni
c A7: Alkoxylated 012-C13 fatty alcohol (average 7
EO) synperon+c A3: Alkoxylated 012-C13 fatty alcohol (average 3
EO) Neodol 23-6.5: Alkoxylated C12-C13 Fatty Alnyl (Average 6.5 EO) The pH of the compositions of Examples 1-6 was between about 10-11. The lul+ of the compositions of Examples 7-19 was adjusted to about 7-8 as necessary. All compositions were pourable and showed less than 2% phase separation even after two months of storage at room temperature. The amount of soap incorporated into the composition may be used as a fabric softener and/or
or a sufficient amount to function as a builder, and the composition contained a sufficient amount of non-soap synthetic surfactant to have excellent cleaning ability.

Claims (10)

[Claims] (1) An aqueous liquid detergent composition comprising at least 7.0% by weight of a non-soap synthetic surfactant and at least 5.0% by weight of a soap, the composition further comprising a solid soap and a non-soap synthetic surfactant. The composition contains a sufficient amount of electrolyte to form a lamellar phase with suspending ability, and the composition has a
Showing less than 2% phase separation by volume after storage for 1 day, and 1
A composition characterized in that it has a pH of less than 2.0. (2) The composition according to claim 1, characterized in that it contains 1% by weight or more of an electrolyte. (3) The composition according to claim 2, characterized in that it contains 5% by weight or more of an electrolyte. (4) The composition according to claim 3, characterized in that it contains 17% by weight or more of an electrolyte. 5. A composition according to any one of claims 1 to 4, characterized in that it also contains at least 5% by weight of non-soap builders. (6) The composition according to claim 5, wherein the non-soap builder consists of an inorganic builder. (7) The composition according to claim 6, wherein the inorganic builder contains part or all of the electrolyte. (8) The composition according to any one of claims 1 to 7, having a viscosity of 6.0 Pas or less at a shear rate of 21 sec^-^1. (9) The composition according to any one of claims 1 to 8, having a pH of 7.0 to 11.0. (10) The composition according to any one of claims 1 to 9 is applied at 0.0%.
Use of aqueous liquids containing 1-10% by weight in the washing of textiles.