DOUBLE LAYER DETERGENT TABLET AND PREPARATION METHOD THEREOF

Abstract

The present application relates to the technical field of daily cleaning and washing products, and particularly to a double layer detergent tablet and a preparation method thereof. The double layer detergent tablet includes a color absorbing fiber and a solid detergent adhered to the color absorbing fiber, the solid detergent includes the following components by mass percentage: 8-30% of polyvinyl alcohol, 10-40% of surfactant, 0.5-5% of polyvinylpyrrolidone, 1-5% of glycerin, 0.5-5% of water softener, 0.1-1% of plant essence, 14-79.9% of deionized water. The surfactant is a mixture of an anionic surfactant and a non-ionic surfactant; the anionic surfactant is a mixture of sodium coco-sulfate and sodium alpha-olefin sulfonate; and the non-ionic surfactant is a mixture of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound.

Claims

1. A double layer detergent tablet, comprising a color absorbing fiber and a solid detergent adhered to the color absorbing fiber, wherein the solid detergent comprises the following components by mass percentage: 8-30% of polyvinyl alcohol, 10-40% of surfactant, 0.5-5% of polyvinylpyrrolidone, 1-5% of glycerin, 0.5-5% of water softener, 0.1-1% of plant essence, and 14-79.9% of deionized water; and wherein the surfactant is a mixture of an anionic surfactant and a non-ionic surfactant; the anionic surfactant is a mixture of sodium coco-sulfate and sodium alpha-olefin sulfonate; and the non-ionic surfactant is a mixture of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound.

2. The double layer detergent tablet according to claim 1, wherein a mass ratio of the sodium coco-sulfate to the sodium alpha-olefin sulfonate is 3-7:1.

3. The double layer detergent tablet according to claim 1, wherein a mass ratio of the sodium coco-sulfate to the sodium alpha-olefin sulfonate is 3:1, and a mass ratio of the anionic surfactant to the non-ionic surfactant is 4:1.

4. The double layer detergent tablet according to claim 1, wherein the double layer detergent tablet further comprises a bio-enzyme, and the bio-enzyme is one or more selected from a group consisting of protease, amylase, lipase and cellulase.

5. The double layer detergent tablet according to claim 4, wherein the bio-enzyme has a mass percentage of 0.1-3% in the double layer detergent tablet.

6. The double layer detergent tablet according to claim 1, wherein the polyvinyl alcohol has an average polymerization degree of 500-2000, and an average molecular weight of 20000-100000.

7. The double layer detergent tablet according to claim 1, wherein the sodium coco-sulfate has a carbon atom number of 12-18; the sodium alpha-olefin sulfonate has a carbon atom number of 12-18; the alkyl glycoside has a carbon atom number of 8-18; the fatty alcohol polyoxyethylene ether has an ethylene oxide (EO) addition number of 9; and the fatty acid methyl ester ethoxy compound has a carbon atom number of 12-14.

8. The double layer detergent tablet according to claim 1, wherein the polyvinylpyrrolidone has a molecular weight of 25000-95000, and a K value of 15-30.

9. The double layer detergent tablet according to claim 1, wherein the polyvinylpyrrolidone has a molecular weight of 8000-100000.

10. The double layer detergent tablet according to claim 1, wherein the polyvinylpyrrolidone is non-ionic.

11. The double layer detergent tablet according to claim 1, wherein the double layer detergent tablet further comprises a detergent builder, and the detergent builder is one or two selected from a group consisting of sodium carbonate and sodium bicarbonate.

12. The double layer detergent tablet according to claim 11, wherein the detergent builder has a mass percentage of 0.1-1%.

13. The double layer detergent tablet according to claim 1, wherein the water softener is a mixture of sodium citrate, citric acid and tetrasodium glutamate diacetate.

14. The double layer detergent tablet according to claim 1, wherein the water softener is a mixture of sodium citrate, citric acid and trisodium methylglycine diacetate.

15. The double layer detergent tablet according to claim 1, wherein the water softener is a mixture of sodium citrate, citric acid and sodium iminodisuccinate.

16. The double layer detergent tablet according to claim 1, wherein the water softener is a mixture of sodium citrate, citric acid and tetrasodium aspartate diacetate.

Description

DETAILED DESCRIPTION

[0047] The present application is further described in detail below in combination with the following examples.

[0048] In the present application, sources of part of the components and equipment in each example and comparative example were shown in the following table, other components and equipment not listed were commercially available.

TABLE-US-00001 Components/ equipment/reagents Model/Article No. Manufacturers Polyvinyl alcohol KD-CW088-20 Sinopec Chongqing SVW Chemical CO., LTD Polyvinylpyrrolidone HP66K BASF Sodium coco-sulfate K12 Shandong Jujin Chemical Materials Co., Ltd Glycerol Glycerol Shandong Xinqiye Environmental Protection Technology Co., Ltd Sodium citrate 266 Henan Shengkun Chemical Products Co., Ltd Citric acid Citric acid monohydrate Henan Ruiyi Chemical Products Co., Ltd 656-665 Tetrasodium glutamate GL-47-S Shanghai Danning Chemical Co., Ltd diacetate Bio-enzyme (protease) Progress Uno 100L Shanghai Hengchen Industrial Co., Ltd Plant essence Gardenia fragrance Guangzhou Fenhao essence Co., Ltd Vertical decontamination RHLQIII type China research institute of Daily Chemical machine Industry Drum washing machine EG8012HB86S Haier Impeller type washing EB65M019 Haier machine National standard carbon JB-01 National surfactant detergent standardization black stained cloth center National standard protein JB-02 National surfactant detergent standardization stained cloth center National standard sebum JB-03 National surfactant detergent standardization stained cloth center Standard laundry detergent / National surfactant detergent standardization center Anhydrous calcium chloride / Damao chemical reagent factory AR Magnesium chloride AR / Damao chemical reagent factory

[0049] The color absorbing fiber used in the present application was prepared by the following steps: a 5 g/L of cationic cellulose ether aqueous solution was prepared, and pH was adjusted to 11 by sodium hydroxide. A viscose fiber was added, and reacted for 50 min at 100° C., then a polyquaternium salt viscose fiber was obtained. The polyquaternium salt viscose fiber was taken out and conventionally dried to obtain the color absorbing fiber.

[0050] In the present application, the specific test methods of detergency and cross-color preventing function for prepared samples of each example and comparative example were as follows:

[0051] Detergency Test

[0052] 1. Preparing hard water: 16.70 g calcium chloride and 20.37 g magnesium chloride was weighted, deionized water was added to 10.0 L to obtain 2500 mg/Kg of the hard water. When in use, 1.0 L of the above hard water was added deionized water to 10.0 L to obtain 250 mg/Kg of the hard water.

[0053] 2. Whiteness Measurement:

[0054] 2.1 JB-01 stained cloth, JB-02 stained cloth and JB-03 stained cloth were cut into a size of 6 cm*6 cm, and were classified into six groups each having a similar blackness. Each group of the test cloths was used for testing the performance of a same sample.

[0055] 2.2 The test pieces were stacked in the same category. Whiteness values before and after washing were read by using a whiteness meter one by one at 457 nm. Two points were selected on both sides of the test cloths before washing (the two points on each side were center symmetrical to each other) and measured in terms of whiteness values, in which an average of four measurements was defined as whiteness F1 of the test cloth before washing. Two points were selected on both sides of the test cloths after washing (the two points on each side were center symmetrical to each other) and measured in terms of whiteness values, in which an average of four measurements was defined as whiteness F2 of the test cloth before washing.

[0056] 3. Detergency Washing Test

[0057] 3.1 The washing test was carried out in a vertical decontamination machine. Before the test, a stirring impeller, a working tank and a decontamination bathtub were numbered one by one and fixed to form a “working unit”, and equipment were preheated to 30° C.±1° C. and kept for a period of time. During the test, 250 mg/kg hard water (which was preheated to about 30° C. in advance) was used to prepared samples separately as 0.2% test solution; the standard laundry detergent was prepared to a 0.2% test solution; and 1 L of each test solution was poured into corresponding decontamination bathtub. The bathtubs were positioned at corresponding locations and equipped with stirring impellers. A washing test temperature was kept at 30° C.±1° C. by adjusting equipment to prepare for the test.

[0058] 3.2 each group of test pieces after testing the whiteness were correspondingly poured into each of the decontamination bathtubs; stirring was started; a speed for stirring was kept at 120 r/min; and a washing process was stopped after 20 min.

[0059] 3.3 the test pieces in the decontamination bathtubs were poured into an inner bucket of a rinser together, and were drained. 1500 mL of running water was poured into the rinser, a lid of which was covered; a handle on the lid was turned; the inner barrel was rotated for 30 s; and then stopped. The rinsing water was drained, and 1500 mL of running water was added to perform a second rinsing. The rinsing water was drained, and the test pieces were manually dehydrated for 15 s (a speed for rotating is about 1800 r/min). The rinsed test pieces were taken out, hung for drying at room temperature, and tested for the whiteness F2 according to whiteness test method of the stained cloth before washing.

[0060] Whiteness difference (F2-F1) of each test cloth before and after washing was calculated by one-to-one correspondence, and a detergency of each group of the test cloths was calculated. Calculation was conducted based on different kinds of the test cloths, and a detergency R and detergency ratio P achieved by a detergent on individual stained cloths were determined as follow.

[0061] 4. Calculation of Detergency Value of a Stained Cloth

[0062] The detergency value Ri=Σ(F2i−F1i)/n;

[0063] where:

[0064] i—Type ith stained test cloth;

[0065] F1i—spectral reflectance of the type ith stained test cloth before washing, %;

[0066] F2i—spectral reflectance of the type ith stained test cloth after washing, %;

[0067] n—effective content of each group of stained test cloth.

[0068] One decimal place was kept for the results.

[0069] 5. Calculation of Detergency Ratio of Stained Cloths

[0070] The detergency ratio Pi=R3i/R0i of a relative standard laundry detergent on the type ith stained cloth;

[0071] where:

[0072] R0i—detergency value of a standard laundry detergent, %;

[0073] R3i—detergency value for the sample.

[0074] One decimal place was kept for the results.

[0075] 6. Determination of Detergency of a Detergent

[0076] When Pi≥1.0, it is determined that “the detergency of the sample to the type ith stained cloth is equal to or better than that of the standard laundry detergent”, which is briefly referred to as “qualified detergency for the type ith stained cloth”; and

[0077] When Pi<1.0, it is determined that “the detergency of the sample to the type ith stained cloth is inferior to that of the standard laundry detergent”, which is briefly referred to as “unqualified detergency for the type ith stained cloth”.

[0078] Cross-Color Preventing Performance Test

[0079] According to the preparing method and test equipment in the detergency test, the test samples and 1 L of hard water were added into the vertical decontamination machine, and one piece of blue cloth, one piece of red cloth and two pieces of white cloth, with a size of 6 cm×6 cm, sold in the market were added, and were washed for 25 min, then rinsed twice with clean water and then dried naturally.

[0080] Color differences of blue cloth, red cloth and white cloth before and after washing were measured. The smaller the color difference value of the white cloth, the better the cross-color preventing performance; the smaller the color difference value of the blue cloth and the red cloth, the better the color protecting effect.

EXAMPLE

Example 1

[0081] A double layer detergent tablet, in which each component and corresponding quality thereof were shown in table 1, was prepared by the following steps:

[0082] S1, the polyvinyl alcohol, the polyvinylpyrrolidone and the deionized water were added into a mixer, stirred and heated to 85° C., and kept for 50 min until materials were completely swollen, then the water softener and non-ionic surfactant were added and stirred evenly, finally, the anionic surfactant and essence were added and continuously stirred evenly to obtain the detergent slurry;

[0083] S2, the detergent slurry was dried preliminarily at 100° C. to prepare a semi-dried solid detergent; and

[0084] S3, the semi-dried solid detergent was adhered on the surface of the color absorbing fiber, and dried until the semi-dried solid detergent was completely dried to obtain the double layer detergent tablet.

Examples 2-4

[0085] The difference of the double layer detergent tablets of Examples 2-4 from that of Example 1 lied in that, each component and corresponding quality thereof were shown in table 1.

Examples 5-7

[0086] The double layer detergent tablets of Examples 5-7, in which each component and corresponding quality thereof were shown in table 1, were prepared by the following steps:

[0087] S1, this step was same as step S1 of Example 1;

[0088] S2, this step was same as step S2 of Example 1;

[0089] S3, the semi-dried solid detergent is adhered on the surface of the color absorbing fiber, and dried until the semi-dried solid detergent was completely dried, and then the bio-enzyme was evenly added to obtain the double layer detergent tablet.

Example 8

[0090] The double layer detergent tablet of Example 8, in which each component and corresponding quality thereof were shown in table 1, was prepared by the following steps:

[0091] S1, the polyvinyl alcohol, the polyvinylpyrrolidone and the deionized water were added into the mixer, stirred and heated to 85° C., and kept for 50 min until materials were completely swollen, then the water softener, detergent builder and non-ionic surfactant were added and stirred evenly, finally, anionic surfactant and essence were added and continuously stirred evenly to obtain the detergent slurry;

[0092] S2, this step was same as step S2 of Example 1;

[0093] S3, this step was same as step S3 of Example 1;

TABLE-US-00002 TABLE 1 each component and quality (kg) thereof in Examples 1-6 Examples Components 1 2 3 4 5 6 7 8 Polyvinyl alcohol 8 18 30 8 8 18 30 8 Anionic Sodium coco-sulfate 7 21 28 6 6 21 28 6 surfactant Sodium alpha-olefin 1 3 4 2 2 3 4 2 sulfonate Non- Alkyl glycoside 0.5 1.5 2 0.5 0.5 1.5 2 0.5 ionic Fatty alcohol 0.5 1.5 2 0.5 0.5 1.5 2 0.5 surfactant polyoxyethylene ether Isomeric alcohol 0.5 1.5 2 0.5 0.5 1.5 2 0.5 polyoxyethylene ether Fatty acid methyl ester 0.5 1.5 2 0.5 0.5 1.5 2 0.5 ethoxy compound Polyvinylpyrrolidone 0.5 2.5 5 0.5 0.5 2.5 5 0.5 Glycerin 1 3 5 1 1 3 5 1 Water Sodium citrate 0.35 2.25 3.5 0.35 0.35 2.25 3.5 0.35 softener Citric acid 0.05 0.25 0.5 0.05 0.05 0.25 0.5 0.05 Tetrasodium glutamate 0.1 0.5 1 0.1 0.1 0.5 1 0.1 diacetate Detergent Sodium carbonate 0 0 0 0 0 0 0 0.05 builder Sodium bicarbonate 0 0 0 0 0 0 0 0.45 Bio-enzyme 0 0 0 0 0.1 1.5 3 0.1 Plant essence 0.1 0.5 1 0.1 0.1 0.5 1 0.1 Deionized water 79.9 43 14 79.9 79.8 41.5 11 79.3

COMPARATIVE EXAMPLE

Comparative Examples 1-3

[0094] The difference of the double layer detergent tablets of Comparative examples 1-3 from that of Example 1 lied in that, each component and corresponding quality thereof were shown in table 2.

Comparative Example 4

[0095] The difference of the double layer detergent tablet of Comparative example 4 from that of Example 1 lied in that, polyvinylpyrrolidone was replaced by same quality cationic guar gum.

TABLE-US-00003 TABLE 2 each component and quality (kg) thereof in Comparative examples 1-3 Comparative examples Components 1 2 3 Polyvinyl alcohol 8 8 8 Anionic Sodium coco- 9 0 7.5 surfactant sulfate Sodium alpha- 2 3 0 olefin sulfonate Non-ionic Alkyl glycoside 0 1.5 0.6 surfactant Fatty alcohol 0 1.5 0.6 polyoxyethylene ether Isomeric alcohol 0 1.5 0.6 polyoxyethylene ether Fatty acid methyl 0 1.5 0.7 ester ethoxy compound Polyvinylpyrrolidone 0.5 0.5 0.5 Glycerin 1 1 1 Water Sodium citrate 0.35 0.35 0.35 softener Citric acid 0.05 0.05 0.05 Tetrasodium 0.1 0.1 0.1 glutamate diacetate Detergent Sodium carbonate 0 0 0 builder Sodium 0 0 0 bicarbonate Bio-enzyme 0 0 0 Plant essence 0.1 0.1 0.1 Deionized water 78.9 80.9 79.9

[0096] Performance Test

[0097] Test One

[0098] The products prepared in Examples 1-8 and Comparative examples 1-4 were diluted to a concentration of 0.2%, a test concentration of the standard laundry detergent was 0.2%, the detergency of the products were tested and results were shown in table 3 below.

TABLE-US-00004 TABLE 3 Performance test results JB-01 Test carbon JB-02 JB-03 Test concentration black protein sebum results Standard 0.2% 1.00 1.00 1.00 / laundry detergent Example 1 0.2% 1.16 1.24 1.55 Qualified Example 2 0.2% 1.15 1.22 1.52 Qualified Example 3 0.2% 1.15 1.23 1.53 Qualified Example 4 0.2% 1.19 1.28 1.58 Qualified Example 5 0.2% 1.21 4.32 1.85 Qualified Example 6 0.2% 1.15 3.58 1.81 Qualified Example 7 0.2% 1.15 3.64 1.82 Qualified Example 8 0.2% 1.29 4.38 1.95 Qualified Comparative 0.2% 1.00 1.00 1.20 Qualified example 1 Comparative 0.2% 1.04 1.00 1.03 Qualified example 2 Comparative 0.2% 1.04 1.01 1.22 Qualified example 3 Comparative 0.2% 1.13 1.20 1.40 Qualified example 4

[0099] Comparing the test results of example 1 and Comparative examples 1-3, it can be seen that, the detergency of example 1 was the better and superior to that of the Comparative examples 1-3. It can be indicated that, when the sodium coco-sulfate and sodium alpha-olefin sulfonate were formulated to make the anionic surfactant, further formulated with the non-ionic surfactant composed of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound, the detergency was superior to that of any surfactant used alone. Moreover, each surfactant in above surfactant system had cooperation and synergistic effect, and the detergency was obviously improved.

[0100] Comparing the test results of examples 1-4, it can be seen that, example 4 has the highest detergency value, and Example 1 has a slightly worse detergency. It can be indicated that, in the present application, when a formulation ratio between the sodium coco-sulfate and sodium alpha-olefin sulfonate was controlled at 3:1, further a formulation ratio between the two and the non-ionic surfactant composed of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound was controlled at 4:1, the obtained detergent tablet has the better detergency.

[0101] Comparing the test results of examples 2-7, it can be seen that, Examples 5-7 added with protein have better detergency than that of examples 2-4, in particular, the detergency to protein stains reached about 3-4 times that of examples 2-4. It can be indicated that, after the protease component was added, the detergency to JB-02 protein stained cloth was improved and the improving effect was obvious. However, the detergency to JB-01 carbon black stained cloth and JB-03 sebum stained cloth was not obviously improved, meanwhile, the specificity of the enzyme formulation for washing was confirmed.

[0102] Comparing the test results of examples 5 and 8, it can be seen that, the detergency of example 8 added with the detergent builder was improved. It can be indicated that, the detergent builder was helpful to the cleaning and detergency of the detergent tablets. A possible reason was that the detergent tablet causes countless of dense small bubbles during preparing the detergent tablet, which facilitates the rapid disintegration of the detergent tablet in water, improving the washing effect.

[0103] Test Two

[0104] The products prepared in Examples 1-8 and Comparative examples 1˜4 were diluted to a concentration of 0.025%, a test concentration of the standard laundry detergent was 0.2%, the detergency of the products were tested and results were shown in table 4 below.

TABLE-US-00005 TABLE 4 test results of detergency JB-01 Test carbon JB-02 JB-03 Test concentration black protein sebum results Standard  0.2% 1.00 1.00 1.00 / laundry detergent Example 1 0.025% 0.89 0.93 1.05 Unqualified Example 2 0.025% 0.89 0.92 1.04 Unqualified Example 3 0.025% 0.88 0.91 1.01 Unqualified Example 4 0.025% 0.90 0.95 1.08 Unqualified Example 5 0.025% 1.17 3.91 1.68 Qualified Example 6 0.025% 1.11 3.12 1.35 Qualified Example 7 0.025% 1.12 3.13 1.37 Qualified Example 8 0.025% 1.09 2.99 1.57 Unqualified Comparative 0.025% 0.71 0.72 0.87 Unqualified example 1 Comparative 0.025% 0.72 0.75 0.86 Unqualified example 2 Comparative 0.025% 0.75 0.79 0.94 Unqualified example 3 Comparative 0.025% 0.85 0.86 1.00 Unqualified example 4

[0105] Comparing the test results of table 3 and 4, it can be seen that, under a condition that the +8 test products was diluted by 8 times (0.025%) and the standard laundry detergent was maintained at a test concentration of 0.2%, the detergency of the Examples 1-5 and Comparative examples 1-6 to JB-01 carbon black stained cloth, JB-02 protein stained cloth and JB-03 sebum stained cloth were obviously decreased. It was also consistent with conventional recognition that the detergency of detergent will be decreased after dilution. However, comparing with the test results of Examples 6-8 added with protease, it can be surprisedly found that, under the condition that the standard laundry detergent was maintained at a test concentration of 0.2%, the samples of the Examples 5-7 were diluted by 8 times, the detergency to JB-01 carbon black stained cloth and JB-03 sebum stained cloth were still qualified, and the detergency were not decreased compared with that before dilution. It can be indicated that, the solid detergent tablet after the protease was added in the present application not only had better detergency to JB-02 protein stained cloth, but also had an greater improvement of detergency to the JB-01 carbon black stained cloth and JB-03 sebum stained cloth.

[0106] Test Three

[0107] The products prepared in Examples 1-8 and Comparative examples 1˜4 were tested for the cross-color preventing function, and results were shown in table 5 below.

TABLE-US-00006 TABLE 5 test results of the cross-color preventing function Color difference Color difference Color difference of white cloth of blue cloth of red cloth Standard 8.31 8.65 8.98 laundry detergent Example 1 1.99 1.02 0.88 Example 2 1.89 1.05 0.85 Example 3 1.91 0.91 0.79 Example 4 1.56 0.84 0.58 Example 5 1.46 0.77 0.45 Example 6 1.78 1.01 0.84 Example 7 1.82 0.84 0.75 Example 8 1.42 0.75 0.35 Comparative 2.34 1.54 1.01 example 1 Comparative 2.05 1.48 0.99 example 2 Comparative 2.10 1.51 0.89 example 3 Comparative 3.61 2.64 1.82 example 4

[0108] Comparing the test results of Examples 1-8 and the standard laundry detergent, it can be seen that, the test results of color differences of white cloth and colored cloth were far less than that of the standard laundry detergent. It can be indicated that, the detergent tablets prepared by the formulation and preparation method in the present application had better color protecting and cross-color preventing function.

[0109] Comparing the test results of Example 1 and Comparative examples 1-3, it can be seen that, the color differences of white cloth and colored cloth of the Example 1 was far less than that of the Comparative examples 1-3. It can be indicated that, when the sodium coco-sulfate and sodium alpha-olefin sulfonate were formulated to make the anionic surfactant, further formulated with the non-ionic surfactant composed of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound, the cross-color preventing function was superior to that of any surfactant used alone. Moreover, each surfactant in above surfactant system had cooperation and synergistic effect, and the cross-color preventing function was obviously improved.

[0110] Comparing the test results of Examples 1-4, it can be seen that, color differences of white cloth and colored cloth of the Example 4 was minimum. It can be indicated that, in the present application, when the formulation ratio of sodium coco-sulfate to sodium alpha-olefin sulfonate was controlled at 3:1, further a formulation ratio between the two and the non-ionic surfactant composed of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound was controlled at 4:1, the cross-color preventing function of the obtained detergent tablet was better.

[0111] Comparing the test results of Examples 1 and 4, it can be seen that, the color differences of white cloth and colored cloth of the Example 1 were far less than that of the Comparative example 4. It can be indicated that, in the present application, when the polyvinylpyrrolidone was used as cross-color preventing agent, and cooperated with a surfactant system composed with an anionic surfactant and a non-ionic surfactant, the problem of poor color protecting and cross-color preventing function after cationic cross-color preventing agent being formulated with non-ionic surfactant was indeed solved. In addition, the color protecting and cross-color preventing function of the detergent prepared in the present application were improved obviously by means of appropriate proportion of components.

[0112] The above are the preferred examples of the present application, which are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.