BACTERIOSTATIC AND ITS USE

Abstract

The present invention relates to the technical field of bacteriostatic products, in particular to a bacteriostatic agent and its application. The bacteriostatic agent comprises the following components by weight: 15 to 30 parts glycerin, 2 to 10 parts chitosan, 2 to 10 parts methylcellulose, 1 to 5 parts sodium bicarbonate, 1 to 5 parts tin(II) chloride, 0.5 to 2 parts nanocopper, 0.1 to 2 parts sodium sorbate, and 40 to 90 parts water. The bacteriostatic agent can effectively inhibit various microorganisms, is safe for the human body, and is non-toxic.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of bacteriostatic products and in particular to a bacteriostatic agent and its application. BACKGROUND

[0002] On persistently cloudy days or during rainy seasons, it's difficult to air-dry clothes, especially thick clothes, within a short period of time after washing, often resulting in a smelly, irritating garment. A dryer is an ideal solution to this problem. However, drying appliances such as dryers are not very common in many families. To date, there are no suitable solutions for bacteriostasis, odor control, and deodorization of washed laundry.

[0003] In fact, clothes stink because odors spread after fungi multiply and ferment in the clothing. These odors are not only annoying but also have negative health effects. Furthermore, other everyday items such as bedding, napkins, rags, and mops often tend to breed microorganisms and therefore require greater antibacterial agents. SUMMARY

[0004] The present invention relates to a bacteriostatic agent comprising the following components in parts by weight: 15 to 30 parts glycerin, 2 to 10 parts chitosan, 2 to 10 parts methylcellulose, 1 to 5 parts sodium bicarbonate, 1 to 5 parts stannous chloride, 0.5 to 2 parts nanocopper, 0.1 to 2 parts sodium sorbate and 40 to 90 parts water.

[0005] In the present invention, methylcellulose can perform various functions, such as anti-precipitation to maintain the stability of the bacteriostatic agent, cooperate with chitosan to form a network structure, and better load stannous chloride, nanocopper, and sodium sorbate, thereby improving bacteriostatic performance. Sodium bicarbonate can adjust the pH and enhance the bacteriostatic effect. Glycerin can perform a solubilizing function and is combined with water to form a dual solvent system, which can increase the solubility and stability of the entire solution system. Furthermore, all of the aforementioned raw materials are harmless to humans and have no toxicity.

[0006] Preferably, the particle size of the nanocopper in the aforementioned bacteriostatic agent is 20 nm to 300 nm, for example 50 nm, 100 nm, 150 nm, 200 nm or 250 nm.

[0007] Preferably, the aforementioned bacteriostatic agent also comprises an essence.

[0008] Preferably, the bacteriostatic agent is a natural essence and / or a mixed essence.

[0009] The essence can have various aromas, such as one of the following: rose, lavender, aloe vera, milk and honey, Monte Carlo perfume, Olympic cologne, sesame scent, mint, green apple, strawberry, orange, and mosquito-repellent Florida water, or a complex health perfume product.

[0010] In the context of the present invention, the term “microorganisms” includes gram-positive or gram-negative bacteria, yeasts, molds, amoebas and, more generally, single-celled organisms that are not visible to the naked eye.

[0011] In a preferred embodiment of the present invention, the microorganisms are Gram-negative or Gram-positive bacteria or molds and yeasts.

[0012] Gram-negative bacteria include, for example, bacteria of the following genera: Escherichia (Escherichia), Shigella (Shigella), Klebsiella (Klebsiella), Proteus (Proteus), Enterobacter (Enterobacter), Citrobacter (Citrobacter), Pseudomonas (Pseudomonas) and Serratia (Serratia).

[0013] Gram-positive bacteria include, for example, bacteria of the following genera: Enterococcus (Enterococcus), Streptococcus (Streptococcus), Lactobacillus (Lactobacillus), Bifidobacterium (Bifidobacterium), Staphylococcus (Staphylococcus), Bacillus (Bacillus), Listeria (Listeria), Clostridium (Clostridium), Mycobacteria (Mycobacteria), Nocardia (Nocardia), Corynebacteria (Corynebacteria), Micrococcus (Micrococcus) and Deinococcus (Deinococcus).

[0014] Yeasts belong, for example, to the following genera: Candida (Candida), Cryptococcus (Cryptococcus), Saccharomyces (Saccharomyces) and Trichosporon (Trichosporon).

[0015] For example, molds belong to the following genera: Aspergillus (Aspergillus), Penicillium (Penicillium) and Cladosporium (Cladosporium).

[0016] Another aspect of the present invention relates to a liquid composition comprising: at least one surfactant and the aforementioned bacteriostatic agent.

[0017] Preferably, the surfactant in the aforementioned liquid composition comprises at least one of the following surfactants: an anionic surfactant, a cationic surfactant, a nonionic surfactant and an amphoteric surfactant.

[0018] In some embodiments, the anionic surfactant is selected from a mixture of one or more sulfonate-based surfactants, a carboxylate-based surfactant, and a sulfate-based surfactant, or preferably from a mixture of one or more alkylbenzenesulfonate, C8-18 alkyl sulfate, ethoxylated C8-18 fatty alcohol sulfate, alpha-olefin sulfonate, fatty acid alkyl ester sulfonate, and ethoxylated fatty alcohol ether carboxylate.

[0019] In some embodiments, the cationic surfactant is selected from at least one of a quaternary ammonium salt-based surfactant, a heterocyclic surfactant, and a cationic polymeric surfactant, wherein the quaternary ammonium salt-based surfactant includes, but is not limited to, a single long straight-chain quaternary ammonium salt, double long straight-chain quaternary ammonium salt, benzyl quaternary ammonium salt, hydroxyalkyl quaternary ammonium salt, fatty amidopropyl hydroxyalkyl quaternary ammonium salt, or polyquaternary ammonium salt obtained by copolymerization of vinylpyrrolidone and unsaturated amide or unsaturated quaternary ammonium salt.

[0020] In some embodiments, the nonionic surfactant is selected from at least one alkoxylated fatty alcohol compound, an alkyl polyglycoside, an alkoxylated fatty acid compound, an ethoxylated fatty acid compound, a fatty acid alkyl alcohol amide, and an ethoxylated sorbitan fatty acid ester.

[0021] In some embodiments, the amphoteric surfactant is selected from at least one betaine-based surfactant, an imidazoline-based surfactant, an amino acid-based surfactant, and an amine oxide-based surfactant, including, but not limited to, alkyl betaine, fatty amidobetaine, fatty amidopropylbetaine, fatty amidopropylhydroxypropylsulfobetaine, alkyl sodium acetateimidazoline, fatty acid imidazoline, sulfonic acid imidazoline, aminopropyl acid derivatives, glycine derivatives, alkyldimethylamine oxide, or fatty amidopropyldimethylamine oxide.

[0022] Preferably, the aforementioned liquid composition further comprises at least one viscosity modifier, a co-solvent, a pH regulator, an antiseptic, a colorant, a cleaning aid, a bleaching agent, an anti-redeposition agent, a fluorescent brightening agent and a color stabilizer.

[0023] The objects treated with the liquid composition within the scope of the present invention include, but are not limited to, textiles, flooring, ceramics, glass, or metal. Examples of the liquid composition include, but are not limited to, a liquid laundry detergent, a laundry spray, and a laundry pretreatment product. Examples of a dishwashing detergent include, but are not limited to, a manual dishwashing detergent and an automatic dishwashing detergent. Examples of a cleaning agent include, but are not limited to, a hard surface cleaner, a floor cleaner, a window cleaner, a toilet and bathroom cleaner, a car wash detergent, and a carpet or rug cleaner.

[0024] Preferably, the aforementioned liquid composition is a textile detergent.

[0025] Preferably, the proportion of the bacteriostatic agent in the aforementioned liquid composition is 5 wt% to 10 wt%, for example 6 wt%, 7 wt%, 8 wt% or 9 wt%. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiments of the present invention will now be referred to in detail, and one or more examples will be described. Each example is intended to illustrate and not to limit the present invention. Indeed, those skilled in the art may make various modifications and changes to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment may be used in another embodiment to create yet another embodiment.

[0027] Unless otherwise specified, all terms (including technical and scientific terms) used to disclose the present invention have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. To facilitate understanding of the teachings of the present invention, the following definitions are used. The terms used herein in the description of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.

[0028] Embodiments of the present invention are described in detail below using examples. It should be understood that these examples are for illustrating the present invention only and are not intended to limit the scope of the present invention. In the following examples, for a test method for which a specific condition is not specified, reference is preferably made to the instructions provided in the present invention, a test manual, a condition commonly used in the art, another test method known in the art, or a condition recommended by a manufacturer.

[0029] In the following specific examples, a measurement parameter related to an ingredient may exhibit a small deviation within a weighing accuracy range unless otherwise specified. For temperature and time parameters, an acceptable deviation is permitted due to the instrument's testing accuracy or operating accuracy. Example 1

[0030] The example shows a process for producing a bacteriostatic agent. 1 g of sodium sorbate, 1 g of nanocopper, 3 g of stannous chloride, 3 g of sodium bicarbonate, an appropriate amount of spices, and 60 ml of water were mixed evenly to obtain the first solution; and 5 g of chitosan and 5 g of methylcellulose were added to 20 ml of glycerol and mixed evenly, the resulting solution was stirred at 40°C to 60°C and then added to the first solution, and finally the resulting mixture was stirred evenly for 20 minutes. Example 2

[0031] The example shows a process for producing a bacteriostatic agent. 2 g of sodium sorbate, 0.5 g of nanocopper, 1 g of stannous chloride, 5 g of sodium bicarbonate, an appropriate amount of spices, and 40 g of water were mixed evenly to obtain the first solution; and 2 g of chitosan and 10 g of methylcellulose were added to 17 ml of glycerol and mixed evenly, the resulting solution was stirred at 40°C to 60°C and then added to the first solution, and finally the resulting mixture was stirred evenly for 20 minutes. Example 3

[0032] The example shows a process for producing a bacteriostatic agent.

[0033] 0.1 g of sodium sorbate, 2 g of nanocopper, 5 g of stannous chloride, 1 g of sodium bicarbonate, an appropriate amount of spices, and 90 g of water were mixed evenly to obtain the first solution; and 10 g of chitosan and 2 g of methylcellulose were added to 30 ml of glycerol and mixed evenly, the resulting solution was stirred at 40°C to 60°C and then added to the first solution, and finally the resulting mixture was stirred evenly for 20 minutes. Examples 4 to 6

[0034] The bacteriostatic agents from Examples 1 to 3 were added to commercially available detergents until their proportion reached 8 wt.%. Comparative example

[0035] The detergent in the comparison example was the same as in the examples, and commercially available Comfort's detergent was used for washing. Test example

[0036] To investigate the bacteriostatic activity of the samples, the applicant examined the difference between the bacteriostatic activities of the samples in Example 4 and the comparative example. Dirty laundry that underwent the same treatment was washed separately with the sample from Example 4 and the detergent from the comparative example, then packed in plastic bags and stored at room temperature for 7 days prior to the bacteriostatic activity tests. The results are presented in the table below. sample Escherichia coli colony count Staphylococcus aureus Candida albicans Smell of clothes Example 4 No Few No Basically no smells Comparison example Few Many Few Strong smell Detergent group Many Many Few Strong smell

[0037] In the detergent group, only the detergent was used, and no Comfort's detergents or additional bacteriostatic agents were added.

[0038] According to the above comparisons and analyses, it was found that the bacteriostatic agent of the present invention has a good bacteriostatic and deodorizing effect and can effectively inhibit microorganisms compared with the group using the commercially available comfort detergent and the detergent.

[0039] The above embodiments describe only a few examples of the present invention. These descriptions are relatively detailed and specific, but should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art could also make several variations and improvements without departing from the concept of the present invention. These variations and improvements are all within the scope of the present invention.

Claims

[1] Bacteriostatic agent comprising the following ingredients in parts by weight: 15 to 30 parts glycerin, 2 to 10 parts chitosan, 2 to 10 parts methylcellulose, 1 to 5 parts sodium bicarbonate, 1 to 5 parts stannous chloride, 0.5 to 2 parts nanocopper, 0.1 to 2 parts sodium sorbate and 40 to 90 parts water. [2] The bacteriostatic agent according to claim 1, wherein the particle size of nanocopper is 20 nm to 300 nm. [3] The bacteriostatic agent according to claim 1 or 2, further comprising an essence. [4] A bacteriostatic agent according to claim 3, wherein the essence is a natural essence and / or a mixed essence. [5] Liquid composition comprising: at least one surfactant and the bacteriostatic agent according to any one of claims 1 to 4. [6] The liquid composition of claim 5, wherein the surfactant comprises at least one of the following surfactants: an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. [7] The liquid composition of claim 5, further comprising at least one of a viscosity modifier, a co-solvent, a pH regulator, an antiseptic, a colorant, a detergent aid, a bleaching agent, an anti-redeposition agent, a fluorescent brightening agent, and a color stabilizer. [8] The liquid composition according to any one of claims 5 to 7, wherein the liquid composition is a fabric detergent. [9] The liquid composition according to any one of claims 5 to 7, wherein the proportion of the bacteriostatic agent in the liquid composition is 5% to 10% by weight.