CN108066164B

CN108066164B - Transparent composite cleaning composition and preparation method thereof

Info

Publication number: CN108066164B
Application number: CN201711456656.4A
Authority: CN
Inventors: 姚喜梅; 乔小玲; 曹平
Original assignee: Shanghai Jahwa United Co Ltd
Current assignee: Shanghai Jahwa United Co Ltd
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2020-06-19
Anticipated expiration: 2037-12-28
Also published as: CN108066164A

Abstract

The invention provides a soap-based and surfactant composite cleaning composition which can keep stable and transparent at low temperature and a preparation method thereof. The transparent composite cleaning composition comprises the following components in percentage by weight: 6-35% of C₁₁‑C₂₀A fatty acid; 1-10% of inorganic base; 1-10% of a polyol; 3-15% of a compound selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate and C₈‑C₁₄At least one surfactant of an alkyl glycoside; 0.01-5% of auxiliary components; and 25-85% of water. The cleansing composition is stable and transparent even at low temperatures below 10 ℃, and can be used in personal body wash, facial gel, pet body wash, etc., and can be packaged in transparent packages.

Description

Transparent composite cleaning composition and preparation method thereof

Technical Field

The invention relates to the field of daily chemical detergents, in particular to a transparent and low-temperature stable compound cleaning composition containing a soap base and a surfactant and a preparation method thereof.

Background

Liquid bath products, commonly referred to as body washes, are becoming more and more popular with consumers since they are more convenient than bar soaps, and are now a second-most consumer product from the daily use of cosmetics than shampoos. The shower gel on the market at present mainly comprises the following dosage forms: one is a surfactant type product using a surfactant as a main cleaning component, the other is a soap base type product using a soap base generated by neutralizing a fatty acid and an inorganic base as a main cleaning component, and the other is a composite product using a soap base and a surfactant in a compounding manner as a main cleaning component.

The soap-based shower gel is always popular with Asian consumers due to the characteristics of easy washing, refreshing after washing and no stickiness, and is particularly suitable for being used in summer. In recent years, with the improvement of the living standard of consumers, the requirements on the bath products to be used are higher and higher, especially for many young consumers, who tend to use the refreshing bath products in summer and want to give them a refreshing feeling in both appearance and use experience. At present, soap-based and compound shower gel can well meet the requirements in use experience.

The cleaning component of soap-based shower gel mainly comprises soap and other components, wherein the soap is generated by saponification of fatty acid with different carbon chains and alkali (inorganic metal alkali or organic alkali), and the soap is usually alkaline. When free base is present in the body wash, it can irritate the skin and cause a dry, taut skin feel after bathing. In order to reduce irritation to the skin and to improve the feel of the skin when used by consumers, the formulations are generally made to contain small amounts of unneutralized free fatty acids. Such soap-based compositions are stable at normal temperature, but at low temperatures, due to the reduced solubility of soaps in water, their solubilization of free fatty acids in the system is also reduced, resulting in the precipitation of the whole system at low temperatures (<10 ℃), a reduction in transparency, affecting the appearance of the system. To reduce the impact of such emissions on the consumer's experience, sunscreens are commonly added to currently available soap-based and complex body washes to impart an opaque appearance to the product, and the packaging is also opaque.

However, consumers want to see the real shape of the contents when purchasing goods, and transparent packages and transparent products enhance the appearance of the products and arouse the consumers' desire to purchase them, and thus, a cleansing composition that is mild to the skin and stable at low temperatures, which is transparent in appearance, is desired.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a soap-based and surfactant composite type cleansing composition which is stable and transparent at low temperature₁₁-C₂₀Fatty acid and inorganic metal base react to form soap base, and small amount of lauroyl sodium sarcosinate, lauroyl amphoteric sodium acetate, C₈-C₁₄The specific surfactant of at least one of the alkyl glycosides can effectively disperse the generated soap with a small content of the surfactant, and can complex and solubilize the free fatty acid and the soap with a small amount of the specific surfactant even if the free fatty acid exists in the system, thereby preventing the free fatty acid and the soap from being precipitated at a low temperature to influence the stability and the transparency of the system, and the method for producing the composite type cleaning composition is also provided.

The transparent composite cleaning composition comprises the following components in percentage by weight:

6-35% of C₁₁-C₂₀A fatty acid;

1-10% of inorganic base;

1-10% of a polyol;

3-15% of a compound selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate and C₈-C₁₄At least one surfactant of an alkyl glycoside;

0.01-5% of auxiliary components; and

25-85% of water.

C above₁₁-C₂₀The fatty acid preferably comprises lauric acid and myristic acid, wherein the weight percentage of the lauric acid is preferably 5-20%, and the weight percentage of the myristic acid is preferably 1-10%.

C above₁₁-C₂₀The fatty acid may further comprise oleic acid in an amount of 10% by weight or less.

The weight percentage content of the surfactant is preferably 5-10%.

The inorganic base is preferably one or a combination of two selected from potassium hydroxide and sodium hydroxide.

The polyhydric alcohol is preferably one or a combination of two or more selected from the group consisting of glycerin, 1, 2-propanediol, 1, 3-propanediol, and butanediol.

The auxiliary components may comprise one or more of thickener, chelating agent, antioxidant, antiseptic, humectant and fat-imparting agent.

The thickener is preferably one or a combination of more than two of methylcellulose, hydroxypropyl methylcellulose, sodium carboxymethylcellulose and hydroxyethyl cellulose, and the weight percentage of the thickener is 0.1-2%.

The chelating agent is preferably EDTA or EDTA-disodium, and the weight percentage of the chelating agent is 0.01-0.3%.

The antioxidant is preferably dibutyl hydroxy toluene, and the weight percentage of the dibutyl hydroxy toluene is 0.01-0.1%.

The preservative is preferably methylisothiazolinone, and the weight percentage of the methylisothiazolinone is 0.01-0.1%.

According to another aspect of the present invention, the transparent composite cleaning composition of the present invention comprises, in weight percent: 5-20% of dodecanoic acid; 1-10% of myristic acid; 1-10% of potassium hydroxide; 1-10% of glycerol; 3-15% of a compound selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate and C₈-C₁₄At least one surfactant of an alkyl glycoside; 0.1-2% hydroxyethyl cellulose; 0.01-0.3% of EDTA; 0.01-0.1% of dibutyl hydroxy toluene; 0.01-0.1% of methylisothiazolinone; and 40-85% of water.

Further, the method for manufacturing the transparent composite type cleaning composition of the present invention comprises the steps of:

(1) adding a thickening agent and a chelating agent into water, stirring and heating to 70-80 ℃ to be used as a component A;

(2) c is to be₁₁-C₂₀Heating fatty acid and antioxidant to 70-80 ℃ to serve as a component B for later use;

(3) dissolving inorganic base in water, preheating to 70-80 ℃, and taking the solution as a component C for later use;

(4) under the condition that A, B, C components are kept at 70-80 ℃, B, C components are added into A components at the same time for saponification reaction, the mixture is continuously stirred for 30-60 minutes until the mixture is uniform and has no agglomeration,

(5) then cooling at room temperature, adding a component D containing a surfactant and polyhydric alcohol when the temperature is reduced to 60-65 ℃, continuously stirring, and cooling to 60-65 DEGAdding a preservative-containing component E at 50-55 ℃, and uniformly dispersing to obtain the transparent composite cleaning composition, wherein the surfactant is selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroyl amphoacetate and C₈-C₁₄At least one surfactant of alkyl glycoside, and the weight percentage content of the compound cleaning composition is 3-15%.

Effects of the invention

The transparent composite cleansing composition of the present invention is less irritating to the skin, is stable and transparent even at a low temperature of less than 10 ℃, and does not cause precipitation of fatty acid soap or free fatty acid. According to the method for producing a transparent composite cleansing composition of the present invention, a composite cleansing composition which is less irritating to the skin, is stable and transparent even at a low temperature of less than 10 ℃, and does not cause precipitation of fatty acid soap or free fatty acid can be obtained.

Detailed Description

The technical aspects of the present invention will be described in detail below with reference to preferred embodiments, but the scope of the present invention is not limited to these embodiments, and the technical aspects of the present invention are intended to be described and not limited.

In the present specification and claims, the content of each component in the composition means the weight percentage content unless otherwise specified.

[ transparent composite cleaning composition ]

Hereinafter, the "transparent composite type cleaning composition" of the present invention is also simply referred to as "cleaning composition".

In the present specification, "C" or "C" is used₁₁-C₂₀The fatty acid refers to saturated fatty acids and unsaturated fatty acids having 11 to 20 carbon atoms. When the carbon chain length of the fatty acid is less than 11, the soap has poor foam appearance, texture and stability and is highly irritating to the skin, and on the other hand, when the carbon chain length of the fatty acid is more than 20, the solubility of the fatty acid is low, the fatty acid is easily separated out at low temperature, and the cleaning ability is poor. Therefore, the carbon chain length of the fatty acid of the present invention is in the range of 11 to 20, preferably 12 to 18In particular, dodecanoic acid, tetradecanoic acid or a combination thereof is preferable.

When the fatty acid content is too small, the concentration of the soap obtained after the saponification reaction is low and the cleaning ability is poor, while when the fatty acid content is too large, the soap concentration is too high or the concentration of the free fatty acid is too high, and the soap is liable to precipitate at low temperature, and it is difficult to obtain a stable transparent cleaning composition at low temperature. Thus, in the present invention, C₁₁-C₂₀The content of the fatty acid is in the range of 6 to 35%, preferably 10 to 25%.

Generally, as the carbon chain length increases, the water solubility of the fatty acid salt formed by the saponification reaction between the fatty acid and the metal base is deteriorated, and the fatty acid salt is easily precipitated at low temperature, but the correlation between the water solubility of the oleate and the carbon chain length is exceptional, and compared with the stearate having the same carbon chain length, the oleate molecule has an unsaturated bond, and the order of the molecular space is destroyed, so that it cannot be crystallized and precipitated from the solution, and thus the phase separation is not easily occurred at low temperature. Therefore, when oleic acid is contained in the cleaning composition, a cleaning composition which is stable and transparent at low temperatures can be easily obtained. In a preferred embodiment, the fatty acid comprises less than 10% oleic acid.

In the present specification, "inorganic base" refers to hydroxides of alkali metals, including but not limited to sodium hydroxide, potassium hydroxide, calcium hydroxide, and the like. In a preferred embodiment, the inorganic base is potassium hydroxide. When potassium hydroxide is used as the inorganic base, the soap obtained is soft, easily liquefied, and suitable for producing a liquid soap, and therefore, it is preferable to carry out the saponification reaction using potassium hydroxide and a fatty acid. The content of the inorganic base is within the range of 1-10%. When the content of the inorganic base is too low, the amount of the generated soap is small, the cleaning capability is poor, and when the content of the inorganic base is too high, a large amount of fatty acid is required for neutralization, the content of the fatty acid salt in the system is too high, and then a large amount of surfactant is required to be used for carrying the generated fatty acid salt. Therefore, at higher levels of inorganic bases and fatty acids, it is not desirable to obtain a cleaning composition that is stable and transparent at low temperatures. In a preferred embodiment, the content of the inorganic base is in the range of 2 to 6%.

In the present invention, C is added in an excess molar amount relative to the inorganic base₁₁-C₂₀Fatty acids, i.e., free fatty acids, are included in the cleaning composition. Generally, the saponified fatty acid salt is alkaline, and the alkaline soap irritates the skin and causes a dry and tense skin feel after bathing. By including free fatty acid in the cleansing composition, the alkalinity of the cleansing composition can be reduced, the irritation to the skin can be reduced, and the skin feel when used by consumers can be improved.

The cleaning composition of the present invention comprises a component selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate, C₈-C₁₄The at least one surfactant of the alkyl glycoside may be contained singly or in combination of two or more kinds of the above surfactants. Wherein "C" is₈-C₁₄The alkyl glycoside is a glucoside having an alkyl group with 8 to 14 carbon atoms, and is preferably a glucoside having a linear alkyl group with 8 to 14 carbon atoms, and more preferably decyl glucoside, from the viewpoint of having good surface activity. By containing 3 to 15% of the surfactant in the composite cleaning composition of the present invention, the fatty acid soap and the free fatty acid in the composition can be effectively dispersed. A higher surfactant content can more effectively prevent precipitation of free fatty acids and the like, but an excessively high surfactant content leads to an increase in cost, and therefore, in a preferred embodiment, the surfactant content is 4 to 10%.

The cleaning composition comprises 1-10% of polyhydric alcohol. In a preferred embodiment, the polyhydric alcohol is any one or a combination of two or more of glycerin, 1, 2-propanediol, 1, 3-propanediol, and butanediol, and further preferably glycerin, 1, 2-propanediol, or 1, 3-propanediol. By adding the polyhydric alcohol, the solubility of the high fatty acid soap and the free fatty acid can be improved, so that the low-temperature stability and the transparency of the cleaning composition are improved.

The cleaning composition comprises 0.01-5% of auxiliary components. The auxiliary component includes, but is not limited to, one or more of a thickener, a chelating agent, an antioxidant, a preservative, a humectant, and a fat-imparting agent.

In a preferred embodiment, the thickener is water-soluble and may be, for example, one or a combination of two or more of methylcellulose, hydroxypropylmethylcellulose, sodium carboxymethylcellulose, and hydroxyethylcellulose, preferably hydroxyethylcellulose. The content of the thickening agent is 0.1-2%. By containing the thickening agent, the viscosity of the system can be increased, the dispersing and solubilizing effects on the fatty acid soap are improved, and the stable and transparent cleaning composition at low temperature can be obtained.

In a preferred embodiment, the chelating agent is EDTA or EDTA-disodium, and the content thereof is 0.01 to 0.3%. The chelating agent complexes with the alkali metal ion of the fatty acid salt in the cleaning composition to form a stable aqueous complex. Therefore, the addition of the chelating agent can increase the stability of the cleaning composition system, prevent the precipitation of fatty acid salts, and is beneficial to obtaining a stable and transparent cleaning composition at low temperature.

In a preferred embodiment, the antioxidant is dibutylhydroxytoluene (BHT) and the content thereof is 0.01 to 0.1%. By adding the antioxidant, the oxidation of the components contained in the cleaning composition can be prevented and delayed, and the stability and the service life of the product are improved.

In a preferred embodiment, the preservative is methylisothiazolinone, and the content thereof is 0.01 to 0.1%. By adding the preservative, the growth of bacteria, fungi and mould can be inhibited, and the preservation and the service life of the cleaning composition are prolonged.

The cleaning composition of the present invention uses water as a solvent, preferably deionized water or distilled water, as deionized water, and can be obtained by an electrodialysis method, a reverse osmosis method, an ion exchange resin method, or the like. The water content is 25-85%.

[ method for producing transparent composite cleaning composition ]

The transparent composite cleaning composition of the present invention can be prepared by the following steps.

(5) then cooling at room temperature, adding a component D containing a surfactant and polyhydric alcohol when the temperature is reduced to 60-65 ℃, continuously stirring, adding a component E containing a preservative when the temperature is reduced to 50-55 ℃, and uniformly dispersing to obtain the transparent compound cleaning composition, wherein the surfactant is selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroyl amphoacetate and C₈-C₁₄At least one surfactant of alkyl glycoside, and the weight percentage content of the compound cleaning composition is 3-15%.

In the above production method, the order of steps (1) to (3) is not particularly limited, and may be performed in any order or simultaneously as necessary. The stirring device and the heating device are not particularly limited, and known stirring devices and heating devices can be used.

Examples

The technical means and advantages of the present invention will be further described below by way of examples and comparative examples.

The raw materials used in the examples of the present invention and comparative examples and their manufacturers are shown in table 1.

[ Table 1 ]

Name of raw materials	Trade name	Manufacturer(s)
			Hydroxyethyl cellulose	HEC(natrosol 250HR)	Asia-smallflower herb
EDTA	Dissolvine Z	Aksu nuobel
			Dodecanoic acid	Lauric acid	Fengyi grease
Myristic acid	Myristic acid	Fengyi grease
			Oleic acid	Oleic acid	Browning of Tai Ke
Dibutylhydroxytoluene	BHT	Huayuan chemical industry
			Potassium hydroxide	KOH	Youlide chemical industry
Lauramidopropyl betaine	LB-30	Guangzhou TianIs given by
			Lauroamphoacetate sodium salt	Miranolultral-32	Solvay
Sodium lauroyl sarcosinate	Amin LS30	Guangzhou Tianci
			Decyl glucoside	Plantacare 2000-up	BASF
Lauryl glucoside	Plantacare 1200-UP	BASF
			Glycerol	USP G995U	Fengyi grease
Methylisothiazolinone	Neolone 950	Chemistry of Dow

Example 1

According to the composition shown in Table 2, 0.1 wt% of EDTA and 1.0 wt% of hydroxyethyl cellulose were added to an appropriate amount of deionized water in an appropriate container, and the mixture was stirred and heated to 70 to 80 ℃ to obtain component A. In another suitable container, 8.0 wt% dodecanoic acid, 5.0 wt% tetradecanoic acid, and 0.05 wt% BHT were uniformly mixed and heated to 70-80 ℃ as component B for use. And dissolving 3.8 wt% of potassium hydroxide in the rest of deionized water in another suitable container, and preheating to 70-80 ℃ to be used as a component C for later use. Under the condition that A, B, C components are kept at 70-80 ℃, B, C components are added into a component A container at the same time, saponification reaction is carried out, stirring is carried out for 30-60 minutes continuously until the mixture is uniform and free of agglomeration, then, cooling is carried out at room temperature, D components containing 5.0 wt% of lauramidopropyl betaine and 5.0 wt% of glycerin are added when the temperature is reduced to 60-65 ℃, stirring is carried out continuously, 0.1 wt% of methylisothiazolinone is added as E components when the temperature is reduced to 50-55 ℃, and the composite cleaning composition of example 1 is prepared after uniform dispersion.

[ Table 2 ]

Examples 2 to 10

According to the content of each component shown in table 3, A, B, C is prepared by the same method as that of example 1, B, C is added into the container of A component under the condition that A, B, C component is kept at 70-80 ℃, saponification is carried out, stirring is continued for 30-60 minutes until the mixture is uniform and free of agglomeration, then the mixture is cooled at room temperature, D component is added when the temperature is reduced to 60-65 ℃, stirring is continued, E component is added when the temperature is reduced to 50-55 ℃, and the composite cleaning composition of examples 2-10 is prepared after uniform dispersion.

[ Table 3 ]

Comparative examples 1 to 5

A, B, C was prepared according to the contents of the ingredients shown in Table 4 by the same method as in example 1, B, C was added to the container for saponification while A, B, C was kept at 70-80 ℃ until the mixture was homogeneous and free of lumps, then cooled at room temperature, D was added when the temperature was reduced to 60-65 ℃, stirring was continued, E was added when the temperature was reduced to 50-55 ℃, and the composite cleaning composition of comparative examples 1-5 was obtained after dispersion.

[ Table 4 ]

[ transparency test ]

The following transparency tests were performed on the samples of the cleaning compositions obtained in examples 1 to 10 and comparative examples 1 to 5 under four conditions of 4 ℃, 25 ℃, 40 ℃ and 48 ℃, and the test results are shown in table 5.

The sample is placed in a lamp box at 4 ℃, the light is adjusted to be white light, the transparency is ○ and the opacity is delta under visual observation, and meanwhile, after the sample is required to be restored to 25 ℃, the transparency is ○ and the opacity is delta under visual observation under the same conditions.

At 25 deg.C, the mixture was placed in a lamp box and the light was adjusted to white light, and the transparency was ○ and the opacity was Δ upon visual observation.

At 40 deg.C, placing in lamp box, adjusting light to white light, observing with visual observation, wherein the transparency is ○ and the opacity is delta, and at the same time, after the sample is required to be restored to 25 deg.C, observing with visual observation under the same condition, wherein the transparency is ○ and the opacity is delta.

At 48 deg.C, placing in a lamp box, adjusting light to white light, observing with visual observation, wherein the transparency is ○ and the opacity is delta, and at the same time, after the sample is required to be restored to 25 deg.C, observing with visual observation under the same condition, wherein the transparency is ○ and the opacity is delta.

[ stability test ]

Samples of the cleaning compositions obtained in examples 1 to 10 and comparative examples 1 to 5 were placed in four stable constant temperature chambers of 4 ℃, 25 ℃, 40 ℃ and 48 ℃ and examined for three months to see whether or not the samples had morphological changes such as turbidity, white precipitation, delamination, etc., and if the samples had not undergone morphological changes after being placed for three months under the above temperature conditions, they were represented as ○, and if they had undergone changes, they were represented as Δ, and the test results are shown in table 5.

[ Table 5 ]

As is clear from the test results shown in Table 5, in examples 1 to 2 and 4 to 6, when the total content of fatty acids (dodecanoic acid and tetradecanoic acid) was 10% or more, a cleaning composition which was stable and transparent at a low temperature (4 ℃) and which was stable and transparent for a long period of time at a temperature of 40 ℃ or more was obtained by using only about 5% of one of lauramidopropyl betaine, sodium lauroamphoacetate, sodium lauroylsarcosine, decyl glucoside, and lauryl glucoside alone.

In example 3, when the total content of fatty acids (dodecanoic acid and tetradecanoic acid) was 10% or more, a cleaning composition which was stable and transparent at low temperature (4 ℃) and also stable and transparent for a long period of time at a temperature of 40 ℃ or more was obtained using 6% of a combination of lauramidopropyl betaine and sodium lauroyl sarcosinate surfactants.

In examples 7 to 11, the fatty acids contained dodecanoic acid, tetradecanoic acid and oleic acid in a total amount of 10% or more, and even though the fatty acids contained oleic acid with a relatively long carbon chain, by adding 10% or less, or even about 3% of any one or a combination of the surfactants of the present invention, a cleaning composition which was stable and transparent at low temperatures (4 ℃) could be obtained, and stable and transparent for a long period of time at temperatures of 40 ℃ or more.

In comparative examples 1 and 2, although the surfactant of the present invention was used, the content of the surfactant was 2%, and it was not possible to obtain a stable transparent cleaning composition at a low temperature (4 ℃ C.) outside the range of the present invention.

In comparative example 3, although the surfactant of the present invention was used and the content thereof was 6%, the total content of fatty acid and alkali was high, and the surfactant of the present comparative example could not effectively support the fatty acid salt formed after the saponification reaction. As a result, a stable transparent cleaning composition at low temperature (4 ℃ C.) was not obtained.

In comparative examples 4 and 5, although the weight ratio of fatty acid to inorganic base and the content of surfactant were within the range of the present invention, the surfactants used were AES (sodium fatty alcohol polyether sulfate), sodium methylcocoyl taurate, which were not specific surfactants of the present invention, and as a result, a stable transparent cleaning composition at low temperature (4 ℃) was not obtained.

From the results of the above examples and comparative examples, it is understood that when 3 to 15% of the specific surfactant of the present invention or a combination thereof is used, the object of the present invention can be achieved, and a stable and transparent cleaning composition at low temperature can be obtained.

It will be understood by those skilled in the art that substitutions and various modifications may be made within the scope not departing from the spirit of the invention. Accordingly, it should be clearly understood that the forms of the present invention are illustrative only and are not intended to limit the scope of the present invention.

Industrial applicability of the invention

The transparent cleansing composition of the present invention has little skin irritation and excellent low temperature transparency, and can be used in body cleansing products such as personal body wash, cleansing gel, pet bathing agent, and the like. In addition, the transparent cleaning composition of the present invention can be packaged in transparent packages to provide a consumer with a visual impression.

Claims

1. A clear composite cleaning composition comprising, in weight percent:

12-14% of C₁₁-C₂₀A fatty acid;

3.6-3.85% of inorganic base;

1-10% of a polyol;

3-10% of a compound selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate and C₈-C₁₄At least one surfactant of an alkyl glycoside;

0.01-5% of auxiliary components; and

the balance of water.

2. A clear composite cleaning composition according to claim 1, wherein C is₁₁-C₂₀The fatty acid comprises lauric acid and myristic acid, wherein the weight percentage of the lauric acid is 6-10%, and the weight percentage of the myristic acid is 2-5%.

3. A clear composite cleaning composition according to claim 2, wherein C is₁₁-C₂₀The fatty acid also contains oleic acid in an amount of less than 10% by weight.

4. The clear composite cleaning composition of claim 1, wherein the surfactant is present in an amount of 5 to 10% by weight.

5. A clear composite cleaning composition according to claim 1 wherein the inorganic base is selected from potassium hydroxide, sodium hydroxide, or a combination of both.

6. A clear composite cleaning composition according to claim 1 wherein the polyhydric alcohol is one or a combination of two or more selected from the group consisting of glycerin, 1, 2-propanediol, 1, 3-propanediol, butanediol.

7. A clear composite cleaning composition according to claim 1 wherein the adjunct ingredients comprise one or more of thickeners, chelating agents, antioxidants, preservatives, humectants and fatliquoring agents.

8. The transparent composite cleaning composition according to claim 7, wherein the thickener is one or a combination of two or more selected from the group consisting of methylcellulose, hydroxypropyl methylcellulose, sodium carboxymethylcellulose and hydroxyethyl cellulose, and is present in an amount of 0.1 to 2% by weight.

9. The clear composite cleaning composition of claim 7, wherein the chelating agent is EDTA or EDTA-disodium, and is present in an amount of 0.01 to 0.3 wt%.

10. The transparent composite cleaning composition according to claim 7, wherein the antioxidant is dibutylhydroxytoluene and is present in an amount of 0.01 to 0.1 wt.%.

11. The clear composite cleaning composition of claim 7, wherein the preservative is methylisothiazolinone and is present in an amount of 0.01 to 0.1 wt%.

12. A clear composite cleaning composition comprising, in weight percent:

6-10% of dodecanoic acid;

2-5% of myristic acid;

3.6-3.85% of potassium hydroxide;

1-10% of glycerol;

5-10% of a compound selected from lauramidopropyl betaine, sodium lauroyl sarcosinate, sodium lauroamphoacetate and C₈-C₁₄At least one surfactant of an alkyl glycoside;

0.1-2% hydroxyethyl cellulose;

0.01-0.3% of EDTA;

0.01-0.1% of dibutyl hydroxy toluene;

0.01-0.1% of methylisothiazolinone; and

the balance of water.

13. A method of making a clear composite cleaning composition according to claim 1 comprising the steps of:

(5) and then cooling at room temperature, adding a component D containing a surfactant and polyhydric alcohol when the temperature is reduced to 60-65 ℃, continuously stirring, adding a component E containing a preservative when the temperature is reduced to 50-55 ℃, and uniformly dispersing to obtain the transparent compound cleaning composition.