CN117264705A - Low-foam antibacterial laundry detergent and preparation method thereof - Google Patents

Abstract

The invention discloses a low-foam antibacterial laundry detergent and a preparation method thereof. The low-foam antibacterial liquid laundry detergent prepared by the invention has small foam amount, is easy to rinse, can save water and electricity during washing, and accords with the concept of green environment protection; meanwhile, the antibacterial agent has excellent antibacterial performance, and can achieve an antibacterial effect at a use concentration of 0.1%.

Description

Low-foam antibacterial laundry detergent and preparation method thereof

Technical Field

The invention belongs to the field of fine chemical industry, relates to a washing article, and particularly relates to a low-foam antibacterial laundry detergent and a preparation method thereof.

Background

With the continuous improvement of national living standard, clothes detergents are developed from simple washing powder, washing soap and the like to the present, so that rich new products such as multifunctional washing liquid, washing gel beads, portable washing tablets and the like are gradually provided. The laundry detergent using water as a dispersion medium is simple and convenient to use, and can develop corresponding functions according to different requirements, so that the laundry detergent becomes the household detergent with the widest application at present. The laundry detergent is easy to generate rich foam in the washing process, and if the foam amount is too large, the rinsing is difficult, and the rinsing times are increased to meet the corresponding cleaning requirements.

With the continuous improvement of the desire for healthy life, the requirement of people for cleaning clothes is gradually expanded to kill pathogenic microorganisms on the surfaces of the clothes. Antibacterial liquid laundry detergent is attracting attention as a multifunctional liquid laundry detergent with both general cleaning and microorganism killing functions. CN109370799a discloses an antibacterial laundry detergent and use thereof, wherein the antibacterial capability test of the laundry detergent is performed with reference to recommended concentration in QB/T2738-2012 evaluation method of antibacterial and bacteriostatic effect of daily chemical products, and the action concentration is 1:100 dilution. However, the concentration of the liquid laundry detergent used in the general washing operation is 0.1% -0.2%, for example, the concentration of the liquid laundry detergent used in the general washing operation is 0.2% when the detergency test is carried out in QB/T1224 liquid detergent for clothing, and the concentration of the concentrated liquid laundry detergent is 0.1%. The dosage of the liquid laundry detergent in actual use is different according to the requirements, and when the antibacterial washing is carried out on clothes, the dosage of the liquid laundry detergent is greatly improved.

Disclosure of Invention

In order to solve the problems, the invention provides a low-foam antibacterial liquid laundry detergent and a preparation method thereof, and the invention mainly aims to reduce foam generated in the washing process of the liquid laundry detergent, reduce corresponding rinsing times and water consumption, and save water and electricity. Meanwhile, the antibacterial effect can be achieved under the use concentration of 0.1%, the antibacterial agent is matched with the use concentration of conventional washing, and the antibacterial agent is convenient to use in practice.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the invention provides a low-foam antibacterial liquid laundry detergent, which comprises the following components in parts by weight: 15-25 parts of nonionic surfactant, 2-5 parts of quaternary ammonium salt bactericide, 2-3 parts of chelating agent, 0.5-2 parts of thickener, 0-1 part of anti-redeposition agent, 0-1 part of pH regulator, 0.05-0.2 part of essence, 0-0.01 part of colorant and 64.89-76.59 parts of water.

As a preferred embodiment of the present invention, the nonionic surfactant includes fatty alcohol polyoxyethylene ether, alkyl glycoside and cocamidopropyl amine oxide.

As a preferable scheme of the invention, the fatty alcohol polyoxyethylene ether is one of AEO7 or AEO 9.

As a preferred embodiment of the present invention, the alkyl glycoside is one of APG0810 or APG 1214.

As a preferable scheme of the invention, the quaternary ammonium salt bactericide is one of benzalkonium bromide or benzalkonium chloride.

As a preferred embodiment of the present invention, the chelating agent is sodium citrate.

As a preferred embodiment of the present invention, the thickener is coconut diethanolamide and polyethylene glycol distearate.

As a preferred embodiment of the present invention, the anti-redeposition agent is sodium polyacrylate.

As a preferable scheme of the invention, the pH regulator is at least one of citric acid and sodium hydroxide.

The invention also provides a preparation method of the low-foam antibacterial laundry detergent, which comprises the following steps:

1) Sequentially adding a nonionic surfactant, sodium citrate, an anti-redeposition agent, a part of thickening agent and a quaternary ammonium salt bactericide into water, heating and stirring until the nonionic surfactant, the sodium citrate, the anti-redeposition agent, the part of thickening agent and the quaternary ammonium salt bactericide are completely dissolved;

2) Adding the rest thickener and stirring uniformly;

3) And cooling, adding the pH regulator, the essence and the colorant, and uniformly stirring to obtain the low-foam easy-to-rinse antibacterial laundry detergent.

Compared with the prior art, the invention has the following beneficial effects:

the low-foam antibacterial laundry detergent obtained by the invention has less foam quantity and less rinsing times; after the laundry detergent is diluted 1000 times, the 0.1% solution can achieve antibacterial effect on staphylococcus aureus, escherichia coli and candida albicans.

Detailed Description

In order to facilitate understanding of the technical means, the creation characteristics, the achievement of the objects and the effects achieved by the present invention, the present invention is further described below with reference to specific examples, but the following examples are only preferred examples of the present invention, not all of which are described in detail below. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Example 1

The embodiment discloses a preparation method of a low-foam antibacterial liquid laundry detergent, which comprises the following components in parts by weight: 12.0 parts of AEO, 5.0 parts of APG1214, 3.0 parts of cocamidopropyl amine oxide, 3.0 parts of benzalkonium bromide, 2.5 parts of sodium citrate, 0.8 part of coconut diethanolamide, 0.8 part of polyethylene glycol distearate, 1.0 part of sodium polyacrylate, 0.4 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method comprises the following steps:

1) Sequentially adding alkyl glycoside, fatty alcohol polyoxyethylene ether, cocamidopropyl amine oxide, sodium citrate, sodium polyacrylate, coconut diethanolamide and quaternary ammonium salt bactericide into water, heating and stirring until the components are completely dissolved.

2) Adding polyethylene glycol distearate or its concentrated solution, and stirring.

3) After cooling, adding the pH regulator, the essence and the colorant, and stirring uniformly to obtain the low-foam and easy-to-rinse antibacterial laundry detergent.

Example 2

The embodiment discloses a preparation method of a low-foam antibacterial liquid laundry detergent, which comprises the following components in parts by weight: 15.0 parts of AEO7, 6.0 parts of APG0810, 4.0 parts of cocamidopropyl amine oxide, 5.0 parts of benzalkonium chloride, 3.0 parts of sodium citrate, 0.4 part of coconut diethanolamide, 0.4 part of polyethylene glycol distearate, 0.5 part of sodium polyacrylate, 0.7 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Example 3

The embodiment discloses a preparation method of a low-foam antibacterial liquid laundry detergent, which comprises the following components in parts by weight: 13.0 parts of AEO9, 5.5 parts of APG0810, 3.5 parts of cocamidopropyl amine oxide, 4.0 parts of benzalkonium chloride, 2.5 parts of sodium citrate, 0.6 part of coconut diethanolamide, 0.6 part of polyethylene glycol distearate, 0.5 part of sodium polyacrylate, 0.5 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Example 4

The embodiment discloses a preparation method of a low-foam antibacterial liquid laundry detergent, which comprises the following components in parts by weight: 8.0 parts of AEO9, 4.5 parts of APG1214, 2.5 parts of cocamidopropyl amine oxide, 3.0 parts of benzalkonium chloride, 2.0 parts of sodium citrate, 1.0 part of coconut diethanolamide, 1.0 part of polyethylene glycol distearate, 1.0 part of sodium polyacrylate, 0.3 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Comparative example 1

In comparison with example 1, cocamidopropyl betaine was used instead of cocamidopropyl amine oxide, comprising in parts by weight: 12.0 parts of AEO, 5.0 parts of APG1214, 3.0 parts of cocamidopropyl betaine, 3.0 parts of benzalkonium bromide, 2.5 parts of sodium citrate, 0.8 part of coconut diethanolamide, 0.8 part of polyethylene glycol distearate, 1.0 part of sodium polyacrylate, 0.4 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Comparative example 2

Compared with example 1, the fatty alcohol polyoxyethylene ether sodium sulfate is used for replacing AEO7, and comprises the following components in parts by weight: 12.0 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 5.0 parts of APG1214, 3.0 parts of cocamidopropyl amine oxide, 3.0 parts of benzalkonium bromide, 2.5 parts of sodium citrate, 0.8 part of coconut diethanolamide, 0.8 part of polyethylene glycol distearate, 1.0 part of sodium polyacrylate, 0.4 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Comparative example 3

Compared with example 1, the nonionic surfactant is added to 30 parts by weight: 18.0 parts of AES, 7.5 parts of APG1214, 4.5 parts of cocamidopropyl amine oxide, 3.0 parts of benzalkonium bromide, 2.5 parts of sodium citrate, 0.8 part of coconut diethanolamide, 0.8 part of polyethylene glycol distearate, 1.0 part of sodium polyacrylate, 0.4 part of citric acid, 0.1 part of essence and 0.01 part of colorant.

The preparation method is the same as in example 1.

Comparative example 4

The preparation method comprises the steps of using PCMX as a bactericide, adding propylene glycol as a solubilizer, and preparing the bactericide according to parts by weight: 15.0 parts of propylene glycol, 12.0 parts of sodium fatty alcohol polyoxyethylene ether sulfate, 3.0 parts of cocamidopropyl betaine, 3.0 parts of PCMX, 2.5 parts of sodium citrate, 1.0 part of sodium polyacrylate, 0.4 part of citric acid, 0.1 part of essence and 0.01 part of colorant. The preparation method comprises the following steps:

1) Sequentially adding AES, cocamidopropyl betaine, sodium citrate and sodium polyacrylate into water, heating and stirring until the components are completely dissolved, and cooling to obtain solution A.

2) Adding PCMX into propylene glycol, stirring and dissolving to obtain solution B.

3) And adding the solution B into the solution A, stirring uniformly, adding the pH regulator, the essence and the colorant, and continuing stirring uniformly.

Performance testing

1. Rinsing Performance test

The low suds antimicrobial laundry detergent prepared in examples 1-4 and comparative examples 1-4 were tested for sudsing height and compared to standard laundry detergents as follows:

1) Several towelettes 30 x 25cm were prepared, and were simply washed and dried for use.

2) The standard laundry detergent is prepared according to GB/T13174 appendix B for determination of detergency and cycle washing Performance of detergents for clothing.

3) 2g of standard liquid laundry detergent or liquid laundry detergent to be detected is added into a basin, then 1L of 200ppm hard water is poured into the basin, the basin is stirred and dissolved, then a towelette is put into the basin, after normal rubbing and washing are carried out for 10 times, the liquid laundry detergent is taken, and the foam height is measured according to GB/T13173 surfactant detergent test method.

4) Adding hard water into the cleaned basin again, putting the towel before, rubbing and washing for 10 times, taking the first rinsing liquid, and performing foam height test.

5) And (4) repeating the step (4) to test the foam height of the second rinsing liquid and the third rinsing liquid.

Table 1 foam height of wash and rinse solutions

As can be seen from Table 1, the examples have comparable suds levels and foam removal rates at higher active concentrations than standard laundry detergents, and the rinse solution is essentially free of suds after two rinses. In comparative example 1 with CAB, the foam amount of the washing liquid is obviously increased; in comparative example 2 in which AES was added, both the washing liquid and rinse liquid foam were more than the standard laundry liquid, requiring rinsing three times or more; comparative example 3 the amount of foam in the washing and rinsing solutions was slightly higher than in the examples because of the increased amount of surfactant.

2. Antibacterial property test

The equipment required for the experiment is as follows:

1) Test strain: coli ATCC8099, staphylococcus aureus ATCC6538 and candida albicans ATCC10231, all provided by China center for type culture collection, self-made 5 th generation slant culture.

2) Neutralizing agent: PBS solution of 1% Tween 80,0.15% lecithin

3) Dilution liquid: PBS solution

4) Sample: examples 1 to 4 and comparative examples 1 to 4 were each diluted 1000-fold to obtain 0.1% solutions

According to QB/T2738-2012 evaluation method of antibacterial and bacteriostatic effects of daily chemical products, neutralizer identification and sterilization tests are carried out, the neutralizer identification result is qualified, and the sterilization test result is shown in the following table 2.

TABLE 2 sterilizing Effect of the diluted solution on test bacteria

Note that: each negative control group was grown aseptically.

As shown in Table 2, the 0.1% solution diluted 1000 times in each example can have a sterilization rate of more than 90% for all three common bacteria within the action time of 10min and 20min, thereby achieving the antibacterial effect. The sterilizing rate of the comparative example 3 to the escherichia coli is 89.5 percent, is less than 90 percent, and cannot achieve the antibacterial effect. The sterilization rate of the comparative example 2 and the comparative example 4 to the three common bacteria is less than 90%, and the antibacterial effect is not achieved.

While the invention has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and additions may be made without departing from the scope of the invention. Equivalent embodiments of the present invention will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims (10)

1. The low-foam antibacterial laundry detergent is characterized by comprising the following components in parts by weight: 15-25 parts of nonionic surfactant, 2-5 parts of quaternary ammonium salt bactericide, 2-3 parts of chelating agent, 0.5-2 parts of thickener, 0-1 part of anti-redeposition agent, 0-1 part of pH regulator, 0.05-0.2 part of essence, 0-0.01 part of colorant and 64.89-76.59 parts of water.

2. The low sudsing antimicrobial laundry detergent of claim 1, wherein the nonionic surfactant comprises fatty alcohol polyoxyethylene ether, alkyl glycoside and cocamidopropyl amine oxide.

3. The low-foam antimicrobial laundry detergent according to claim 2, wherein the fatty alcohol-polyoxyethylene ether is one of AEO7 or AEO 9.

4. A low sudsing antimicrobial laundry detergent according to claim 2, wherein the alkyl glycoside is one of APG0810 or APG 1214.

5. The low-foam antimicrobial laundry detergent of claim 1, wherein the quaternary ammonium salt bactericide is one of benzalkonium bromide or benzalkonium chloride.

6. The low-sudsing antimicrobial laundry detergent of claim 1, wherein the chelating agent is sodium citrate.

7. The low sudsing antimicrobial laundry detergent of claim 1, wherein the thickening agent is coconut diethanolamide and polyethylene glycol distearate.

8. A low sudsing antimicrobial laundry detergent according to claim 1, wherein the anti-redeposition agent is sodium polyacrylate.

9. The low-sudsing antimicrobial laundry detergent of claim 1, wherein the pH adjusting agent is at least one of citric acid and sodium hydroxide.

10. A method of preparing a low sudsing antimicrobial laundry detergent according to any one of claims 1-9, comprising the steps of:

1) Sequentially adding a nonionic surfactant, sodium citrate, an anti-redeposition agent, a part of thickening agent and a quaternary ammonium salt bactericide into water, heating and stirring until the nonionic surfactant, the sodium citrate, the anti-redeposition agent, the part of thickening agent and the quaternary ammonium salt bactericide are completely dissolved;

2) Adding the rest thickener and stirring uniformly;

3) And cooling, adding the pH regulator, the essence and the colorant, and uniformly stirring to obtain the low-foam easy-to-rinse antibacterial laundry detergent.