CN114085714B - Moisture-resistant washing powder and preparation method thereof - Google Patents

Moisture-resistant washing powder and preparation method thereof Download PDF

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CN114085714B
CN114085714B CN202111452301.4A CN202111452301A CN114085714B CN 114085714 B CN114085714 B CN 114085714B CN 202111452301 A CN202111452301 A CN 202111452301A CN 114085714 B CN114085714 B CN 114085714B
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sodium
parts
washing powder
moisture
powder
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CN114085714A (en
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李广智
王自成
李俊博
杨美靖
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Xi'an Nanfeng Daily Chemical Co ltd
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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06Powder; Flakes; Free-flowing mixtures; Sheets
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/044Hydroxides or bases
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/046Salts
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/08Silicates
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/12Water-insoluble compounds
    • C11D3/124Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246Silicates, e.g. diatomaceous earth
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/38Products with no well-defined composition, e.g. natural products

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

The application relates to the field of washing powder, and in particular discloses a damp-proof washing powder and a preparation method thereof, wherein the damp-proof washing powder comprises 1-2 parts of fatty acid methyl ester sulfonate, 10-15 parts of auxiliary surfactant, 1.3-2.6 parts of caustic soda, 7-15 parts of sodium carbonate, 45-60 parts of anhydrous sodium sulfate, 7-9 parts of water softener, 10-15 parts of builder, 0.1-0.5 part of enzyme preparation, 15-28 parts of water and 0.1-0.5 part of brightening agent, wherein the builder comprises sodium silicate and lamellar crystal sodium disilicate, and the mass ratio of the sodium silicate to the lamellar crystal sodium disilicate is 1 (1.3-1.6). The moisture-resistant washing powder has the advantages of strong dirt removal performance, difficult moisture caking and difficult caking; in addition, the preparation method of the anti-damp washing powder adjusts the feeding sequence, adopts proper technological parameters, and has the advantages of simple operation and suitability for technological production.

Description

Moisture-resistant washing powder and preparation method thereof
Technical Field
The invention relates to the field of washing powder, in particular to a damp-proof washing powder and a preparation method thereof.
Background
The washing powder is a powdery (granular) synthetic detergent, and has a good decontamination effect in various water qualities such as well water, river water, tap water and spring water, even seawater and the like, and is widely applicable to various fabrics, so that the washing powder has large production and use amounts.
The prior washing powder mainly comprises an active substance such as a surfactant, a water softener and other necessary auxiliary agents, the traditional washing powder is easy to absorb moisture and agglomerate, and particularly in southwest and southern areas, the moisture content in the production of the washing powder is up to more than 5%, so that the packaging process is influenced, and the moisture caking performance of the washing powder in later use is reduced.
With respect to the related art as described above, the inventors consider that the moisture resistance of the washing powder is to be further improved.
Disclosure of Invention
In order to improve the moisture resistance of the washing powder, the application provides a moisture-resistant washing powder and a preparation method thereof.
In a first aspect, the present application provides a moisture-resistant laundry powder, which adopts the following technical scheme:
the moisture-resistant washing powder comprises the following components in parts by weight: 1-2 parts of fatty acid methyl ester sulfonate, 10-15 parts of auxiliary surfactant, 1.3-2.6 parts of caustic soda, 7-15 parts of sodium carbonate, 45-60 parts of anhydrous sodium sulfate, 7-9 parts of water softener, 10-15 parts of builder, 0.1-0.5 part of enzyme preparation, 15-28 parts of water and 0.1-0.5 part of brightening agent, wherein the builder comprises sodium silicate and lamellar crystal sodium disilicate, and the mass ratio of the sodium silicate to the lamellar crystal sodium disilicate is 1 (1.3-1.6).
By adopting the technical scheme, the fatty acid methyl ester sulfonate becomes a green surfactant due to excellent biodegradability and better skin care performance, and the fatty acid methyl ester sulfonate has excellent surface activity and hard water washing capability, so that the cleaning performance of the washing powder is enhanced, and the effect of the fatty acid methyl ester sulfonate and the auxiliary surfactant can effectively mix all raw materials to have moderate viscosity in the preparation process of the washing powder, so that the washing powder has excellent existence form and good appearance.
The detergent builder formed by compounding sodium silicate and lamellar crystal sodium disilicate according to a certain mass ratio is added into the washing powder, and the proper amount of lamellar crystal sodium disilicate is used for replacing sodium silicate, so that free water near the washing powder can be adsorbed by the aid of the sodium silicate, the sodium silicate and the sodium carbonate which are contained in the lamellar crystal sodium disilicate, the sodium silicate and the lamellar crystal sodium disilicate are matched for use, other raw materials in the washing powder are kept dry in ambient air, the whole washing powder can be kept dry due to effective reduction of water absorption, the moisture resistance of the washing powder is improved, the possibility that the washing powder is disturbed by water content in the external environment is reduced, the granularity of the whole washing powder is improved, the adaptation period of the washing powder is optimized, the washing powder sold to various places is facilitated to be produced in batches, and the washing powder can be quickly dissolved in water when in use, has good fluidity and can be fully contacted with the clothes, so that the effect of effective descaling is achieved.
It should be noted that the ratio of sodium silicate to layered crystalline sodium disilicate has a great influence on the performance of the washing powder, and if the content of sodium silicate is too large, the washing powder is not beneficial to exerting excellent performance; if the content of the layered crystal sodium disilicate is too large, the viscosity of the washing powder is poor, and the raw materials in the washing powder cannot be well gathered, so that the mixing of the raw materials is not facilitated, and the excellent performance is exerted.
The sodium carbonate, the anhydrous sodium sulphate and the water softener are added, so that various greasy dirt on clothes can be quickly and efficiently dissolved, the descaling performance of the washing powder is further improved, the sodium carbonate can adsorb free water outside bound water molecules, and the detergent can act together with the builder to positively influence the moisture-resistant performance of the washing powder. The addition of the whitening agent into the washing powder can further perfect the washing powder on the basis of meeting the basic dirt removing function, so that the clothes are not easy to change color after being washed, the applicability of the washing powder is improved, and the washing powder meets the requirement of more diversification.
Optionally, the raw materials also comprise 1.5-3 parts of water-proofing agent, and the water-proofing agent is prepared from carboxymethyl cellulose and sodium bicarbonate.
By adopting the technical scheme, the carboxymethyl cellulose and the sodium bicarbonate can easily adsorb free water in the external environment to form bound water, so that the effect of protecting other raw materials in the washing powder from water absorption is achieved, and the effect of further promoting the washing powder to be difficult to damp and knot is achieved. The carboxymethyl cellulose is in a free-flowing superfine short rod shape, the sodium bicarbonate is in a spherical structure, the shapes of the carboxymethyl cellulose and the sodium bicarbonate are greatly different, the carboxymethyl cellulose and the sodium bicarbonate are not easy to stack, and the fluidity of the carboxymethyl cellulose and the sodium bicarbonate is increased, so that the contact area of the carboxymethyl cellulose and the sodium bicarbonate with external moisture is increased, the carboxymethyl cellulose and the sodium bicarbonate can fully absorb water, and the moisture resistance of the washing powder is improved.
Optionally, the mass ratio of the carboxymethyl cellulose to the sodium bicarbonate is (0.6-1): 1.
Through adopting above-mentioned technical scheme, the mobility of sodium bicarbonate is big relative carboxymethyl cellulose's mobility, therefore when the addition of sodium bicarbonate is slightly more, the mobility of sodium bicarbonate is relative carboxymethyl cellulose exposes the surface area increase in the external world, helps making carboxymethyl cellulose and sodium bicarbonate can fully absorb water, increases the anti damp knot performance of washing powder, in addition, when the ratio of carboxymethyl cellulose and sodium bicarbonate is suitable, is difficult for gathering between carboxymethyl cellulose and the sodium bicarbonate and deposits on the clothing, helps reducing the possibility that the washing powder causes the damage to the clothing.
Optionally, the co-surfactant is an anionic surfactant or a nonionic surfactant.
By adopting the technical scheme, the anionic surfactant has the characteristics of better decontamination, foaming, dispersion, emulsification and the like, the nonionic surfactant is not ionized in water, has good compatibility, has strong capability of resisting hard water, electrolyte and metal ions, and can be dissolved in water and organic solvent, so that the use of the anionic surfactant or the nonionic surfactant is beneficial to improving the performances of the washing powder in all aspects.
Optionally, the water softener includes any one of sodium aluminosilicate, sodium tripolyphosphate, and citrate.
By adopting the technical scheme, the sodium aluminosilicate, the sodium tripolyphosphate and the citrate can reduce calcium and magnesium ions in the washing liquid, so that the washing liquid has higher decontamination performance.
In a second aspect, the present application provides a method for preparing a moisture-resistant laundry powder, which adopts the following technical scheme:
a preparation method of a damp-proof washing powder comprises the following steps:
adding an auxiliary surfactant, caustic soda, a part of sodium carbonate, a part of sodium silicate and all water into fatty acid methyl ester sulfonate, heating and stirring to obtain a primary mixture;
step two, adding a brightening agent, anhydrous sodium sulfate, residual sodium silicate and a second part of sodium carbonate into the initial mixture obtained in the step one, heating and stirring to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
and step four, adding layered crystalline sodium disilicate, residual sodium carbonate, enzyme preparation and remainder into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging.
Optionally, the mass ratio of the middle-layer-shaped crystalline sodium disilicate to the sodium carbonate in the fourth step is (1.18-1.84): 1.
Through adopting above-mentioned technical scheme, firstly, mix the raw materials that become thick liquids easily earlier, help making each raw materials intensive mixing, and help shortening each raw materials intensive mixing's time, water and gas's consumption has been reduced, in addition, partial lamellar sodium silicate and partial soda ash are added into the washing powder as the back batching, can effectively play the effect of reducing the washing powder caking degree, especially when the addition of layer form crystallization sodium disilicate and soda in step four is in suitable ratio, the moisture-proof knot performance of washing powder is strengthened, the looseness of powder is better, help making the washing powder wholly present fine stability.
Optionally, the stirring temperature in the first step and the second step is 50-75 ℃, the stirring speed is 15-17r/min, the stirring time in the first step is 3-6min, and the stirring time in the second step is 5-10min.
By adopting the technical scheme, the washing powder with high washing performance and excellent damp-proof performance can be efficiently and batched generated by controlling the technological parameters in each step.
In summary, the present application has at least one of the following beneficial effects:
1. because the detergent builder formed by compounding sodium silicate and layered crystal sodium disilicate according to a certain mass ratio is adopted, the layered crystal sodium disilicate can adsorb a large amount of free water, so that the air around other raw materials in the washing powder is kept dry, and the moisture-resistant performance of the washing powder is effectively improved;
2. the water-proofing agent formed by the carboxymethyl cellulose and the sodium bicarbonate is adopted in the application, and the carboxymethyl cellulose and the sodium bicarbonate can absorb free water, so that the effect of further promoting the washing powder not to be easy to damp and bind is achieved;
3. the sodium carbonate is adopted, and can adsorb free water outside bound water molecules, so that the sodium carbonate is beneficial to the cooperation with the builder, and the moisture-resistant performance of the washing powder is improved;
4. by adopting a specific feeding sequence, the washing powder is favorable for fully mixing all raw materials in the washing powder, and partial layered crystal sodium disilicate and sodium carbonate are used as post-ingredients to fully play roles of the sodium carbonate and the layered crystal sodium disilicate, so that the washing powder with excellent solubility and washing performance is produced in batches and high efficiency.
Detailed Description
The present application is described in further detail below with reference to examples. The specific description is: the following examples, in which specific conditions are not specified, are conducted under conventional conditions or conditions recommended by the manufacturer, and the raw materials used in the following examples are commercially available from ordinary sources unless otherwise specified.
Example 1
The preparation method of the damp-proof washing powder comprises the following steps:
step one, adding 10kg of alpha-alkenyl sodium sulfonate, 1.3kg of caustic soda, 4kg of sodium carbonate, 3kg of sodium silicate and 28kg of water into 1kg of fatty acid methyl ester sulfonate, and stirring at a stirring speed of 15r/min for 3min at a temperature of 50 ℃ to obtain a primary mixture;
step two, adding 0.1kg of fluorescent whitening agent, 60kg of anhydrous sodium sulfate, 2.76kg of sodium silicate and 6kg of sodium carbonate into the initial mixture obtained in the step one, and stirring at a stirring speed of 15r/min for 5min at a temperature of 50 ℃ to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
and step four, adding 7kg of sodium aluminosilicate, 9.23kg of layered crystalline sodium disilicate, 0.1kg of enzyme preparation and 5kg of sodium carbonate into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging.
Example 2
The preparation method of the damp-proof washing powder comprises the following steps:
step one, adding 15kg of coconut oil fatty acid diethanolamide, 2.6kg of caustic soda, 2kg of sodium carbonate, 2kg of sodium silicate and 15kg of water into 2kg of fatty acid methyl ester sulfonate, and stirring at a stirring speed of 900r/min for 6min at a temperature of 75 ℃ to obtain a primary mixture;
step two, stirring 0.1kg of fluorescent whitening agent, 60kg of anhydrous sodium sulfate, 2.35kg of sodium silicate and 2kg of sodium carbonate in the initial mixture obtained in the step one at the temperature of 75 ℃ at the stirring speed of 17r/min for 10min to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
and step four, adding 9kg of sodium tripolyphosphate, 5.65kg of layered crystalline sodium disilicate, 0.1kg of enzyme preparation and 3kg of sodium carbonate into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging.
Examples 3 to 9
The preparation method of the damp-proof washing powder comprises the following steps:
adding an auxiliary surfactant, caustic soda, a part of sodium carbonate, a part of sodium silicate and all water into fatty acid methyl ester sulfonate, and stirring at a stirring speed of 16r/min for 4min at a temperature of 60 ℃ to obtain a primary mixture;
adding a fluorescent whitening agent, anhydrous sodium sulfate, residual sodium silicate and a part of sodium carbonate into the initial mixture obtained in the step one, and stirring at a stirring speed of 16r/min for 8min at a temperature of 70 ℃ to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
and step four, adding layered crystalline sodium disilicate, an enzyme preparation, residual sodium carbonate and the remainder into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging.
The specific formulations of examples 3-9 are shown in Table 1.
Table 1. The ingredients of examples 3-9.
Comparative example
Comparative example 1
The preparation method of the washing powder comprises the following steps:
adding 23kg of water into a container with stirring, sequentially adding 1kg of limonene, 5kg of C8-C14 alkyl glycoside, 7kg of fatty acid methyl sodium sulfonate, 7kg of alcohol ether carboxylate AEC-9Na, 7kg of tea saponin, 35kg of layered crystal sodium disilicate, 5kg of natural soap powder and 10kg of sodium sulfate under the condition of stirring at a stirring speed of 25r/min, and spray drying to obtain a finished product after the components are uniformly mixed.
Comparative example 2
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that sodium silicate is not added in the whole process.
Comparative example 3
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that no sodium silicate is added in the whole process and 14kg of the layer-like crystalline sodium disilicate is added in step four.
Comparative example 4
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that no layered crystalline sodium disilicate is added in step four.
Comparative example 5
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that in step four, the addition amount of the layered crystalline sodium disilicate is 11.2kg.
Comparative example 6
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that in step four, the addition amount of the layered crystalline sodium disilicate is 5.6kg.
Comparative example 7
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that no soda ash was added during the whole process.
Comparative example 8
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that in step four, coconut oil fatty acid diethanolamide is not added.
Comparative example 9
The preparation method of the washing powder comprises the following steps:
the difference from example 3 is that the stirring temperature in the first step is 100 ℃ and the stirring time is 8min; the stirring temperature in the second step is 40 ℃, and the stirring time is 20min.
Performance test
Performance test 1 (detection of basic Performance of washing powder)
The following basic performance tests were carried out on the washing powders prepared in examples 1 to 9 and comparative examples 1 to 9:
(1) Detecting granularity of the washing powder: the following method was used for the determination:
the diameter of a screen frame of the test screen is 200mm, the screen surface of a metal wire woven mesh screen is selected, a set of clean and dry screens with specified apertures are selected, the screen groups are overlapped into a screen group from bottom to top according to the order of the apertures from small to large, the screen groups are arranged on a chassis and are arranged on an electric oscillator together, 100g of samples separated by a conical sample separator are accurately weighed, the samples are arranged in an upper layer of screen, a screen cover is added, the oscillator is started, the oscillation is stopped after 5min, the chassis and the screen groups are taken down, and the sample mass on each screen and in the chassis is respectively collected and weighed. According to the mass of the residual sample on the screen disc, the granularity is calculated by the following formula, and the average value of multiple tests is taken as an experimental result. The measurement results are shown in Table 2.
A=b/m×100, where:
a—screen retention (%) on the screen layer and chassis;
b- -the mass (g) of the sample remaining on the sieve layer and chassis;
m-mass of sample (g).
(2) And (3) detecting moisture: the measurement is carried out by adopting an oven method, and the specific operation is as follows:
weighing 2g of washing powder sample, placing the washing powder sample in a weighing bottle with constant weight, then placing the weighing bottle with the sample in a (102+/-2) DEG C oven, drying for 4 hours, taking out the weighing bottle, placing the weighing bottle in a dryer, cooling for 30 minutes, capping, weighing, and taking the average value of multiple tests as an experimental result. The following formula was used for calculation, and the measurement results are shown in Table 2.
W=m 1 /m 2 ×100
W-mass% moisture;
m 1 -reduced mass (g) of the sample after drying;
m 2 -mass of sample (g).
(3) Determination of blocking degree: the following measurement methods were used:
installing an anti-caking property tester, placing a gasket at the bottom of a container at the lower part of the caking property tester, sleeving a cylinder, and hooping the cylinder by using a clamp; pouring the tested washing powder into a container at the lower part of the caking property tester until the washing powder is fully poured and overflows, and scraping the upper surface by a ruler; placing a pad on the surface of the powder, loosening a pin, lightly putting down a pressure lever, allowing the pressure lever to fall down flexibly, enabling a lower disc to be just pressed on the pad, adding two 5Kg weights (about 10 Kg) on the pressure lever disc, taking down the weights after maintaining for 2 minutes, removing the pressure lever, inserting the pin, carefully separating and removing the container; the gasket was weighted and held for 10 seconds, then the weight was again added until the powder mostly fallen off and collapsed, and the weight added was recorded as the anti-caking value (UTC) of the sample.
Wherein, the more the moisture in the washing powder, the worse the granularity, the higher the caking value, and the worse the moisture-proof performance of the washing powder.
The washing powders prepared in examples 1 to 9 and comparative examples 1 to 9 were left for one month in an angqing ordinary environment, and then the corresponding performance tests in (1) and (2) were performed again to obtain spot check data, and the spot check data are shown in table 2.
(4) Detection of total actives: the total active content (%) in the washing powder was measured by the measurement method of GB/T13173.2-2000 measurement of total active content in detergents, and the measurement results are shown in Table 2.
TABLE 2 detection data of basic washing powder Performance
And (5) continuing the table:
performance test II (detergency test)
The washing powder prepared in examples 1, 3, 5, 7 and 9 was tested by referring to GB/T13174-2008 "determination of detergency and cycle washing Performance of detergents for clothing", using three kinds of dirt cloth, namely national standard carbon black JB-01, national standard protein JB-02 and national standard sebum JB-03. The experimental conditions are as follows: the method comprises the steps of adopting 250ppm of hard water, washing the water with the concentration of 2g/L, washing the water for 20min at the temperature of 30 ℃, and adopting a RQHL type vertical decontamination machine specified by national standards, wherein the rotating speed is 60r/min. The measurement results are shown in Table 3 (the following results are the detergency values relative to the standard washing powder).
TABLE 3 detergent power data sheet
The following can be concluded by analysis of the data in table 2:
as can be seen from the above examples 1 to 9 and comparative example 1, the washing powder having high granularity and good applicability, which is not liable to absorb moisture, can be mass-produced by adopting the formulation and the preparation method of the present application.
From the comparison of the data of examples 3 and 4-6, it can be seen that the particle size of the obtained washing powder is increased when appropriate amounts of carboxymethyl cellulose and sodium bicarbonate are added, the water content of the washing powder is low, the caking value is low, and the moisture content of the washing powder is increased, and the caking resistance of the washing powder is reduced according to the difference between the spot inspection data and the factory data, probably because the respective mobility of the carboxymethyl cellulose and sodium bicarbonate after being mixed is relatively high, the contact area between the carboxymethyl cellulose and sodium bicarbonate and the external water is increased, the aim of fully absorbing water is achieved, and the washing powder is not easy to be wetted as a whole.
As can be seen from comparative examples 5 and 9, it is demonstrated that soda ash is important to be added as a post-ingredient, and has a specific effect on the anti-caking property of the washing powder, and as can be seen from the data of examples 3 and 7, the anti-caking property of the whole washing powder is greatly reduced when soda ash is not added to the washing powder at all.
According to example 3 and comparative examples 2-4, sodium silicate and layered crystalline sodium disilicate, when present together, help to improve the anti-caking properties of the laundry powder, allowing the laundry powder to exhibit good particle size and apparent density. When only one of them is added, the moisture-resistant performance of the washing powder is greatly reduced. In addition, as is apparent from the data of comparative examples 3 and 2 to 3, even though the addition amount of layered crystalline sodium disilicate is improved as compared with example 3 without adding sodium silicate, the anti-caking property of the washing powder is greatly reduced as compared with example 3, which is sufficient to indicate that sodium silicate and layered crystalline sodium disilicate are synergistically enhanced, not simply superimposed on each other, and that the increase in the amount of a single substance adversely affects the granularity and anti-caking property of the washing powder.
In combination with the data of example 3 and comparative examples 5-6, it is also important to determine the ratio of sodium silicate to layered crystalline sodium disilicate, and if either of them is excessive, the moisture resistance of the washing powder is reduced.
As is clear from the data of comparative example 3 and comparative example 8, the co-surfactant also has an effect on the performance of the washing powder, and the raw materials in the washing powder are coordinated with each other. It is understood from the comparison of example 3 and comparative example 9 that the process parameters for manufacturing the washing powder also have an effect on the performance of the washing powder.
As can be seen from the data in Table 3, the washing powder prepared in the application has good washing effect and meets the industrial requirements; and the apparent density value of the washing powder prepared in the application is between 0.4 and 0.5, which is helpful for saving packaging materials.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (7)

1. A moisture-resistant laundry powder, characterized in that: the coating comprises the following components in parts by weight: 1-2 parts of fatty acid methyl ester sulfonate, 10-15 parts of auxiliary surfactant, 1.3-2.6 parts of caustic soda, 7-15 parts of sodium carbonate, 45-60 parts of anhydrous sodium sulfate, 7-9 parts of water softener, 10-15 parts of builder, 0.1-0.5 part of enzyme preparation, 15-28 parts of water and 0.1-0.5 part of brightening agent, wherein the builder comprises sodium silicate and lamellar crystal sodium disilicate, and the mass ratio of the sodium silicate to the lamellar crystal sodium disilicate is 1 (1.3-1.6);
the preparation method of the damp-proof washing powder comprises the following steps:
adding an auxiliary surfactant, caustic soda, a part of sodium carbonate, a part of sodium silicate and all water into fatty acid methyl ester sulfonate, heating and stirring to obtain a primary mixture;
step two, adding a brightening agent, anhydrous sodium sulfate, residual sodium silicate and a second part of sodium carbonate into the initial mixture obtained in the step one, heating and stirring to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
step four, adding layered crystalline sodium disilicate, residual sodium carbonate, enzyme preparation and residual materials into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging;
the mass ratio of the middle layer-shaped crystal sodium disilicate to the sodium carbonate in the fourth step is (1.18-1.84): 1.
2. A moisture-resistant laundry powder according to claim 1, wherein: the raw materials also comprise 1.5-3 parts of water-proofing agent which is prepared from carboxymethyl cellulose and sodium bicarbonate.
3. A moisture-resistant laundry powder according to claim 2, wherein: the mass ratio of the carboxymethyl cellulose to the sodium bicarbonate is (0.6-1): 1.
4. A moisture-resistant laundry powder according to claim 1, wherein: the auxiliary surfactant adopts anionic surfactant or nonionic surfactant.
5. A moisture-resistant laundry powder according to claim 1, wherein: the water softener includes any one of sodium aluminosilicate, sodium tripolyphosphate, and citrate.
6. A process for preparing a moisture resistant laundry powder as claimed in any one of claims 1 to 5, wherein: the method comprises the following steps:
adding an auxiliary surfactant, caustic soda, a part of sodium carbonate, a part of sodium silicate and all water into fatty acid methyl ester sulfonate, heating and stirring to obtain a primary mixture;
step two, adding a brightening agent, anhydrous sodium sulfate, residual sodium silicate and a second part of sodium carbonate into the initial mixture obtained in the step one, heating and stirring to obtain a final mixture;
step three, after grinding the final mixture obtained in the step two, carrying out pressurized conveying, and carrying out high-tower powder spraying to form primary powder;
step four, adding layered crystalline sodium disilicate, residual sodium carbonate, enzyme preparation and residual materials into the primary powder obtained in the step three, uniformly mixing to obtain a finished product, and packaging;
the mass ratio of the middle layer-shaped crystal sodium disilicate to the sodium carbonate in the fourth step is (1.18-1.84): 1.
7. The method for preparing the damp-proof washing powder according to claim 6, wherein the method comprises the following steps: the stirring temperature in the first step and the second step is 50-75 ℃, the stirring speed is 15-17r/min, the stirring time in the first step is 3-6min, and the stirring time in the second step is 5-10min.
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CN111548866A (en) * 2020-05-26 2020-08-18 浙江美生日化用品有限公司 Environment-friendly phosphorus-free washing powder and preparation process thereof

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JPH09202892A (en) * 1995-11-22 1997-08-05 Kao Corp Powdery detergent composition for clothes
JPH09309719A (en) * 1996-05-24 1997-12-02 Nippon Chem Ind Co Ltd Complex alkali metal salt, production thereof and builder for detergent
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CN101368147A (en) * 2008-09-03 2009-02-18 南风化工集团股份有限公司 Neat soap washing powder and preparing technique thereof
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