CN111154562B

CN111154562B - Bleaching main lotion for laundry detergent and preparation method thereof

Info

Publication number: CN111154562B
Application number: CN202010029908.0A
Authority: CN
Inventors: 肖智泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2022-01-04
Anticipated expiration: 2040-01-13
Also published as: CN111154562A

Abstract

The invention discloses a bleaching main lotion for a laundry detergent and a preparation method thereof, wherein the main lotion comprises the following components in percentage by mass: 30-35% of active matter, 6-10% of thiourea dioxide, 4-8% of ethanol, 2-6% of ethylene glycol, 0.5-2% of defoaming agent, 6-8% of benzisothiazolin-3-one, 0.05-1% of stabilizing agent and the balance of deionized water, wherein the active matter comprises one or more of fatty acid methyl ester ethoxylate, long-chain carboxylic ester polyoxyethylene and fatty acid methyl ester sodium sulfonate. The invention focuses on dispersing, reduction bleaching and removing inorganic dirt, and effectively solves the problems of graying, yellowing and easy corrosion of solid dirt deposited on textiles by adopting the synergistic effect of a plurality of components. The bleaching main lotion for the washing dragon can synchronously complete the functions of washing, decontamination, deliming, yellowing and bleaching in the main washing stage, and still keeps the white value of the public textile to be more than 70 degrees under natural light after 130 times of repeated washing, has no corrosion phenomenon, and can completely meet the requirement of GB/T35744 on the cleaning quality of the public textile.

Description

Bleaching main lotion for laundry detergent and preparation method thereof

Technical Field

The invention relates to the technical field of industrial main washing liquid, in particular to bleaching main washing liquid for a laundry detergent and a preparation method thereof.

Background

With the rapid development of the laundry dragon, the market is gradually matured. At present, the main washing liquid of laundry detergent is basically divided into two types, one type is compounded by taking surfactants such as Tx-10, op-10, isomeric alcohol ether and the like as main raw materials, and the other type is compounded by adding a certain amount of complex enzyme into the compounded surfactant. Both types of main wash liquors require bleaching with sodium hypochlorite (chlorine bleaching) or hydrogen peroxide (oxygen bleaching), the former being highly irritating and prone to cause corrosion of public textiles, the latter being of low bleaching efficiency, insignificant medium and low temperature effect and large usage. The two types of main washing liquid can gradually generate phenomena of graying, yellowing, corrosion and the like along with the increase of the washing times of the fabrics. It is difficult to meet the cleaning quality requirement of public textiles.

The invention provides a main washing liquid of a tunnel type clothes washing machine, called 'washing dragon' for short, in a main washing section, which is mainly used for washing public textiles, can effectively ensure that the public textiles have no corrosion phenomenon in the whole service cycle, and has good bleaching effect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a bleaching main lotion for a laundry detergent and a preparation method thereof so as to solve the problems in the technical background.

The purpose of the invention is realized by the following technical scheme:

the bleaching main washing liquid for the laundry dragon comprises the following components in percentage by mass: 30-35% of active matter, 6-10% of thiourea dioxide, 4-8% of ethanol, 2-6% of ethylene glycol, 0.5-2% of defoaming agent, 6-8% of benzisothiazolin-3-one, 0.05-1% of stabilizer and the balance of deionized water.

Further, the paint comprises the following components in percentage by mass: 32% of active matter, 8% of thiourea dioxide, 6% of ethanol, 4% of ethylene glycol, 1% of defoaming agent, 7% of benzisothiazolin-3-one, 0.5% of stabilizing agent and the balance of deionized water.

Further, the active comprises one or more of fatty acid methyl ester ethoxylate, long-chain carboxylic ester polyoxyethylene and fatty acid methyl ester sodium sulfonate.

Further, the active matter comprises the following components in percentage by mass: 12% of fatty acid methyl ester ethoxylate, 15% of long-chain carboxylic ester polyoxyethylene and 5% of fatty acid methyl ester sodium sulfonate.

Further, the defoaming agent comprises one or more of organic silicon, sucrose ester, dimethyl silicone oil, dimethyl siloxane, phenyl siloxane and amino-terminated siloxane.

Further, the stabilizer comprises one or more of carboxymethyl cellulose, sodium acetate, sodium sulfite, calcium chloride, glycerol and sodium formate.

A preparation method of a bleaching main washing liquid for a laundry dragon comprises the following steps:

(1) preparing a solution A: slowly pouring ethanol and a defoaming agent into the active substance, and slightly stirring for later use to obtain a solution A;

(2) and B, preparation of a solution B: adding a stabilizer and ethylene glycol into deionized water at 30 ℃, stirring, and adding thiourea dioxide while stirring to obtain a solution B;

(3) main washing liquid C: slowly pouring the stirred and dissolved B liquid into the A liquid, adding the B liquid while stirring, and fully stirring to obtain the main bleaching lotion for the laundry dragon.

In the invention, fatty acid methyl ester ethoxylate (FMEE) is used as a surfactant, the molecular structure of the surfactant has a long molecular carbon chain with 18 carbons and simultaneously has two ethoxy groups, the molecular structure is more complex than nonionic products such as AEO, TX and the like, and the molecular weight is larger, so the surfactant has better dispersing performance relatively, the dispersing performance is better, the anti-contamination of various impurities (such as dirt formed by the impurities, calcium, grease and the like) can be effectively prevented, the use amount of the fatty acid methyl ester ethoxylate is reduced, the washing effect is improved, and the service life of washing equipment is influenced. Meanwhile, the main carbon chain of the fatty acid methyl ester ethoxylate FMEE has an ester group structure, the ester group structure is relatively unstable, the tail end of the fatty acid methyl ester ethoxylate FMEE is easily oxidized, the fatty acid methyl ester ethoxylate FMEE is broken at a beta carbon position, decomposed and converted into a microbial metabolite and finally degraded into carbon dioxide and water, the biodegradation rate can reach more than 99%, so that the fatty acid methyl ester ethoxylate FMEE has no harm to the environment, has small stimulation to a human body, and completely meets the safety requirement index of the human body.

Long-chain carboxylic ester polyoxyethylene (LMEO-18 for short) is a novel nonionic surfactant, and has low foaming performance, excellent emulsifying, dispersing, wetting, cleaning and other excellent performances; LMEO is 18 carbon fatty acid ester, the molecular structure of ester group is similar to the structure of grease and wax, according to the principle of similarity and intermiscibility, the LMEO has stronger dissolving and removing capability to grease, mineral oil and wax, has more reasonable double bond structure, and has better dispersing and removing capability to lipid; the detergent has the same excellent washing performance, oil solubilization, dispersibility and wettability under the conditions of high temperature and low temperature; meanwhile, the skin care lotion has good biodegradability, is environment-friendly and has no irritation to skin.

Fatty acid methyl ester sodium sulfonate (MES for short) as a surfactant has strong permeability, can quickly extend into fabric fibers and can be deeply cleaned; the oil stain remover has good emulsifying and dispersing performance, can quickly emulsify and wrap oil stains, and can remove oil with strong force; the detergent has excellent hard water resistance, is not easy to combine with calcium and magnesium ions in hard water, and still keeps strong detergency in the hard water; meanwhile, soap scum stains can be dispersed into small particles which are easy to wash, deposition is not easy to occur, and the washed fabric is beautiful and new. Meanwhile, the fatty acid methyl ester sodium sulfonate MES has low irritation and high biodegradability, does not irritate the skin, is easy to degrade into carbon dioxide and water, and is environment-friendly.

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

1. compared with the prior main lotion for public textiles, the main lotion focuses on emulsification, decomposition and oxidation bleaching, the invention focuses on dispersion, reduction bleaching and removal of inorganic dirt, and effectively solves the problems that solid dirt is deposited on the textiles, and the textiles are grayed, yellow and easy to corrode.

2. According to the invention, multiple components are adopted, and the synergistic effect is realized, specifically, the washing decontamination, dispersion and redeposition prevention of dirt are realized through fatty acid methyl ester ethoxylate, long-chain carboxylic ester polyoxyethylene and fatty acid methyl ester sodium sulfonate, reductive bleaching is realized through thiourea dioxide, inorganic dirt is synergistically removed, meanwhile, solubilization, dilution and tension reduction are realized through ethanol and glycol, and broad-spectrum disinfection and sterilization are realized through benzisothiazolin-3-one; the main washing liquid provided by the invention can improve the graying and darkening phenomenon of the fabric while washing and removing dirt, and can ensure that the main fiber of the fabric becomes flat, smooth and restores the original luster.

3. The bleaching main lotion for the washing dragon can enable the washing dragon to synchronously complete the functions of washing, decontamination, deliming, de-yellowing and bleaching in the main washing stage, still keeps the whiteness value of the public textile under natural light to be more than 70 degrees after 130 times of repeated washing, has no corrosion phenomenon, and can completely meet the requirement of GB/T35744 on the cleaning quality of the public textile.

4. The bleaching main lotion for the laundry dragon provided by the invention is easy to obtain materials, simple to manufacture, good in safety and environment-friendly.

Drawings

FIG. 1a is a graph showing the effect of the main wash obtained in example 2 on the washing of a first public textile of the same batch;

FIG. 1b is a graph showing the effect of a conventional main wash on the washing of a first type of public textile of the same batch;

FIG. 2a is a graph showing the effect of the main wash obtained in example 2 on the washing of a second public textile of the same batch;

FIG. 2b is a graph showing the effect of a prior art main wash on the washing of a second type of public textiles of the same batch.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Example 1

The bleaching main washing liquid for the laundry dragon comprises the following components in percentage by mass: 30% of active matter, 10% of thiourea dioxide, 4% of ethanol, 6% of ethylene glycol, 0.5% of defoaming agent, 6% of benzisothiazolin-3-one, 1% of stabilizer and the balance of deionized water.

The active matter comprises the following components in percentage by mass: 10% of fatty acid methyl ester ethoxylate, 14% of long-chain carboxylic ester polyoxyethylene and 5% of fatty acid methyl ester sodium sulfonate.

Example 2

The bleaching main washing liquid for the laundry dragon comprises the following components in percentage by mass: 32% of active matter, 8% of thiourea dioxide, 6% of ethanol, 4% of ethylene glycol, 1% of defoaming agent, 7% of benzisothiazolin-3-one, 0.5% of stabilizing agent and the balance of deionized water.

The active matter comprises the following components in percentage by mass: 12% of fatty acid methyl ester ethoxylate, 15% of long-chain carboxylic ester polyoxyethylene and 5% of fatty acid methyl ester sodium sulfonate.

Example 3

The bleaching main washing liquid for the laundry dragon comprises the following components in percentage by mass: 35% of active matter, 6% of thiourea dioxide, 8% of ethanol, 2% of ethylene glycol, 2% of defoaming agent, 8% of benzisothiazolin-3-one, 0.05% of stabilizer and the balance of deionized water.

The active matter comprises the following components in percentage by mass: 13% of fatty acid methyl ester ethoxylate, 16% of long-chain carboxylic ester polyoxyethylene and 5% of fatty acid methyl ester sodium sulfonate.

Example 4

On the basis of the embodiment 2, the active matter comprises the following components in percentage by mass: 14% of fatty acid methyl ester ethoxylate and 18% of long-chain carboxylic ester polyoxyethylene.

In the laundry dragon bleach main wash liquor obtained in any one of examples 1 to 4, the antifoaming agent comprises one or more of silicone, sucrose ester, dimethicone, phenylsiloxane, and amino-terminated siloxane. The stabilizer comprises one or more of carboxymethyl cellulose, sodium acetate, sodium sulfite, calcium chloride, glycerol and sodium formate.

The method of making a laundry dragon bleach main wash liquor obtained in any of examples 1-4, comprising the steps of:

Application example 1

In a certain washing factory, the main lotion obtained in example 2 and the main lotion (the existing main lotion in the market) commonly used in the washing factory are used for washing the same batch of first public textiles and the same batch of second public textiles, the washing conditions are observed, and the washing effect on the same batch of first public textiles is shown in fig. 1a and fig. 1 b; the washing effect on the same batch of a second type of public textile, as shown in fig. 2a and 2 b; as can be seen from the figure, the main washing liquid provided by the embodiment 2 is used for washing and decontaminating the first public textiles and the second public textiles in the same batch, the phenomenon of graying and darkening of the fabrics is improved, the main fibers of the fabrics become flat, smooth and restore the original luster, and the washing effect of the main washing liquid is far greater than that of the main washing liquid commonly used in a washing factory.

Application example 2

In a certain washing factory, the main washing liquid obtained in examples 1 to 4 is used as an experimental group, the main washing agent commonly used in the washing factory is used as a control group, the same batch of public textiles are washed, and the whiteness of the washed public textiles is measured by using a whiteness meter, and the statistical data are shown in table 1:

table 1 whiteness statistical table after washing with different main washing liquids

As can be seen from table 1, the whiteness values of the public textiles after washing with the main washing liquids obtained in examples 1 to 4 are all greater than the whiteness values after washing with the control group, which indicates that the bleaching ability of the laundry detergent is strong by reducing the white laundry detergent main liquid according to the present invention.

Application example 3

In a washing plant, the main washing liquid obtained in example 2 was used to repeatedly wash a batch of public textiles, and no corrosion occurred, and the whiteness values corresponding to different washing times were measured and recorded by using a whiteness meter under natural light, as shown in table 2:

TABLE 2 whiteness values for different washing times

Number of washes	1	20	50	90	130
						Whiteness degree	84.7	85.1	83.4	80.1	73.3

As can be seen from Table 2, the whiteness value of the public textile under natural light is still kept larger than 70 degrees after 130 times of repeated washing, and the public textile is free from corrosion phenomenon, and can completely meet the cleaning quality requirement of GB/T35744 public textiles.

The invention does not select the active agent with strong emulsifying capacity and high active content on the sample selection of the surfactant, but selects fatty acid methyl ester ethoxylate, long-chain carboxylic ester polyoxyethylene and fatty acid methyl ester sodium sulfonate with special performance according to the object of the detergent (public textile) and combines the washing characteristics of automatically injecting liquid alkali liquor (sodium hydroxide solution) from a distributor during the main washing stage of the washing dragon. The main washing liquid of the invention is added with thiourea dioxide, the aim of reductive bleaching is achieved by utilizing the principle that the substance is easy to decompose under alkaline condition to generate sulfinic acid with strong reducibility, and the thiourea dioxide has small concentration and high bleaching degree when in use and does not damage cotton fibers.

The working principle of the main lotion provided by the invention is as follows: in the main washing stage, the main washing liquid can quickly and effectively permeate into the fibers along the fibers, namely, a fiber channel is opened, washing, decontaminating and bleaching components occupy all gaps in the fibers, dirt attached to the fabric is separated under the action of mechanical force, the separated dirt can be stably dispersed into the washing liquid through the self dispersing performance of fatty acid methyl ester ethoxylate, long-chain carboxylic ester polyoxyethylene and fatty acid methyl ester sodium sulfonate, a thicker hydration adsorption layer is formed around dirt ions, a space barrier for preventing the dirt ions from approaching each other is formed, the dirt ions are easily separated and are not easy to deposit, and the purposes of washing, decontaminating, dispersing and dirt redeposition prevention are achieved; the thiourea dioxide in the main washing liquid is added, so that sulfinic acid with extremely strong reducibility is generated in an alkaline environment, the reductive bleaching is realized, and inorganic dirt is removed synergistically; meanwhile, ethanol and glycol realize solubilization, dilution and tension reduction, and benzisothiazolin-3-one realizes broad-spectrum disinfection and sterilization; the main washing liquid provided by the invention can improve the graying and darkening phenomenon of the fabric while washing and removing dirt, and can ensure that the main fiber of the fabric becomes flat, smooth and restores the original luster.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The bleaching main washing liquid for the laundry dragon is characterized by comprising the following components in percentage by mass: 30-35% of active matter, 6-10% of thiourea dioxide, 4-8% of ethanol, 2-6% of ethylene glycol, 0.5-2% of defoaming agent, 6-8% of benzisothiazolin-3-one, 0.05-1% of stabilizer and the balance of deionized water; wherein the active comprises fatty acid methyl ester ethoxylate, long chain carboxylic ester polyoxyethylene and sodium fatty acid methyl ester sulfonate, or fatty acid methyl ester ethoxylate and long chain carboxylic ester polyoxyethylene; the defoaming agent comprises one or more of sucrose ester, dimethyl silicone oil, phenyl siloxane and amino-terminated siloxane; the stabilizer comprises one or more of carboxymethyl cellulose, sodium acetate, sodium sulfite, calcium chloride, glycerol and sodium formate.

2. A main bleaching washing liquid for a laundry dragon according to claim 1, characterized by comprising the following components in percentage by mass: 32% of active matter, 8% of thiourea dioxide, 6% of ethanol, 4% of ethylene glycol, 1% of defoaming agent, 7% of benzisothiazolin-3-one, 0.5% of stabilizing agent and the balance of deionized water.

3. A main bleaching wash liquor according to claim 1, wherein the active comprises the following components in mass percent: 12% of fatty acid methyl ester ethoxylate, 15% of long-chain carboxylic ester polyoxyethylene and 5% of fatty acid methyl ester sodium sulfonate.

4. A method of making a laundry dragon bleaching main wash liquor according to any one of claims 1-3, comprising the steps of:

(3) main washing liquid: slowly pouring the stirred and dissolved B liquid into the A liquid, adding the B liquid while stirring, and fully stirring to obtain the main bleaching lotion for the laundry dragon.