WO2018076512A1 - Quickly-dissolvable low-irritation laundry detergent sheet - Google Patents

Abstract

A quickly-dissolvable low-irritation laundry detergent sheet comprises 10% to 30% of film forming agent, 5% to 20% of low-irritation detergent, 1% to 10% of kaolin, 3% to 40% of lauryl sodium sulfate, 0.5% to 10% of fatty acid diethanol amide, 0.1% to 10% of dodecyl polyoxyethylene ether sodium sulfate, 0.1% to 10% of fatty alcohol-polyoxyethylene ether, 0 to 10% of polyhydric alcohol, 0.1% to 5% of chelating agent, 0.1% to 3% of PH conditioning agent, 0.1% to 1% of a preservative, 0.5% to 3% of essence, and 1% to 50% of deionized water. Active ingredients, the film forming agent and the like are scientifically matched; film forming is easy; the laundry detergent sheet can be quickly dissolved within 3 to 6 seconds without powder residues, has a stronger cleaning capability, and can be biodegraded; the technical effect of environmental protection is ensured; storage is easier; wasting caused by caking and softening is avoided; the irritation of the laundry detergent sheet to the skin is low; the washing capability is stronger; and the irritation of the laundry detergent sheet to the skin is low under the condition of hand washing.

Description

[Name of invention made by ISA according to Rule 37.2] Instant low irritant laundry tablets Technical field

The invention relates to the technical field of daily chemicals, in particular to an instant low-irritation laundry tablet.

Background technique

The laundry tablet is a new type of washing product. It is small in size, light in weight, easy to store and carry, and is also very convenient and quick to use. Compared with the traditional washing products, the washing powder and the laundry liquid not only greatly improve the detergency, but also have antibacterial, It is mildew-proof, does not damage the fabric and the skin, and saves at least half of the water compared to the traditional method. After one week, the wastewater has a biodegradation rate of over 98%, ensuring that it does not contain harmful components such as fluorescent whitening agents, which are harmful to human health and the environment. At the same time, it is mild and non-irritating. Unlike traditional washing products, it has strong alkalinity and almost zero damage to clothing. Laundry tablets are a breakthrough in the green development and healthy transformation of the washing industry. The dissolution rate of laundry tablets is slow and easy to agglomerate has always been a bottleneck restricting the development of this type of products. Solving this problem can make the laundry type products better applied in washing. in the market.

Summary of the invention

The technical problem to be solved by the present invention is that the existing laundry sheet has a slow dissolution rate and is easy to agglomerate. The present invention provides an instant low-irritation laundry tablet which can quickly dissolve no powder residue in 3-6 seconds by using a super-concentration technique. Small size, no space, travel, travel can be carried with you, and has a stronger cleansing power than the same amount of laundry tablets, will dissolve immediately in hot and cold water, biodegradable, ensure environmentally friendly technical effects, easier to store , no caking and softening waste, and the low irritating detergent contained in the detergent component is low in skin irritation. It has a strong washing ability and is less irritating to the skin in the case of hand washing.

The technical solution adopted by the invention is:

The instant low irritant laundry tablet of the present invention is composed of the following weight percent components:

Film forming agent 10-30%;

Low stimulating detergent 5-20%;

Kaolin 1-10%;

Sodium lauryl sulfate 3-40%;

Fatty acid diethanolamide 0.5-10%;

Decanediol polyoxyethylene ether sulfate 0.1-10%;

Fatty alcohol polyoxyethylene ether 0.1-10%;

Polyol 0-10%;

Chelating agent 0.1-5%;

PH regulator 0.1-3%;

Preservative 0.1-1%;

Flavor 0.5-3%;

Deionized water 1-50%.

Preferably, the laundry tablet of the present invention is composed of the following weight percentage components:

Film former 20%;

Low stimulating detergent 10%;

5% of kaolin;

Sodium lauryl sulfate 2%;

Fatty acid diethanolamide 5%;

Decylene diol polyoxyethylene ether sulfate 5%;

Fatty alcohol polyoxyethylene ether 5%;

Polyol 5%;

Chelating agent 2%;

PH regulator 2%;

Preservative 0.5%;

Fragrance 2%;

Deionized water was 36.5%.

The film forming agent is at least one selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol crosslinked polymer, and polyvinyl alcohol.

The low detergent selected stimulus C ₁₂ -C ₁₈ alkyl glucosides; sodium lauroyl glutamate, disodium sulfosuccinate ester PEG-5 lauryl amide group, at least one surfactant.

The kaolin is selected from the group consisting of calcined kaolin, ultrafine kaolin or soft kaolin.

The sodium lauryl sulfate is a granular sodium lauryl sulfate.

The polyol is selected from one or both of propylene glycol and glycerol.

The chelating agent is selected from the group consisting of EDTA disodium, one or both of EDTA tetrasodium.

The pH adjusting agent is selected from the group consisting of sodium citrate, one or both of citric acid.

The preservative is selected from one or both of methylparaben and propylparaben.

The film forming agent in the composition of the invention is selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol crosslinked polymer and polyvinyl alcohol to form a uniform permeable membrane which can penetrate rapidly in an aqueous environment. Wetting, the structure of the component can be broken down into an aqueous solution while rapidly dissolving, and the mild surfactant is combined to dissolve the entire laundry sheet in rapid hydration.

The effect of the low irritant detergent is to reduce the irritation of the laundry tablet and to wash the laundry in combination with sodium dialkyl sulfate.

The kaolin in the composition of the invention is characterized in that the laundry sheet is made more dry, does not stick during tableting and storage, does not agglomerate and soften, and absorbs water during use to accelerate the dissolution rate of the laundry sheet.

The addition of the polyol of the present invention is mainly for increasing the moisture absorption of the laundry sheet and increasing the adhesion of the kaolin and the film former.

The composition of the present invention contains a chelating agent, which can combine the ions in the water to lower the hardness of the water, improve the washing ability of the laundry sheet, and avoid the decrease of the washing detergency due to the influence of the water quality hardness of the geographical difference.

The invention contains a pH adjusting agent to adjust the pH of the water after the laundry sheet is dissolved, so that the PH value of the aqueous solution is weakly acidic and closer to the pH value of the human skin, and does not damage the characteristics of the fabric and the skin, even in the case of hand washing, it does not cause an opponent. stimulate.

The invention also contains a preservative and a fragrance. The preservative is used to prevent the growth of the micro-organisms of the laundry tablet, and the fragrance is used to adjust the odor of the instant low-irritation laundry tablet, such as floral, woody, fruity and the like.

The preparation method of the present invention is that the components of the above components are uniformly mixed in order of weight ratio, and then subjected to tableting, slicing, coating and packaging to form a finished product, which will not be described in detail herein.

The invention uses the same laundry tablet in the same manner, and puts a corresponding number of laundry tablets with water to wash according to the weight of the laundry.

The positive effects of the present invention are as follows:

Compared with the prior art, the present invention has the following advantages:

The instant low-irritation laundry tablet of the present invention can quickly dissolve no powder residue in 3-6 seconds by using the ultra-concentration technique. It has stronger cleansing power than the same amount of laundry tablets. It will dissolve immediately in hot and cold water, biodegradable, ensuring environmentally friendly technical effects, easier to store, no caking and softening waste.

The detergent component contained in the invention comprises a low-stimulation detergent alkyl glucoside; sodium lauroyl glutamate, etc., which has strong cleaning power and low irritation, and the pH value of the aqueous solution after dissolution of the laundry tablet of the invention is weakly acidic and closer to the human body. The pH of the skin does not hurt the characteristics of the fabric and the skin, and even in the case of hand washing, it does not cause irritation to the opponent.

detailed description

The following examples are a further detailed description of the invention.

Example 1

The instant low irritant laundry tablet of the present invention is composed of the following weight percent components:

Film former 10%;

Low stimulating detergent 20%;

Kaolin 1%;

Sodium lauryl sulfate 40%;

Fatty acid diethanolamide 0.5%;

Decanediol polyoxyethylene ether sulfate 10%;

Fatty alcohol polyoxyethylene ether 0.1%;

Polyol 10%;

Chelating agent 0.1%;

PH regulator 3%;

Preservative 0.1%;

Flavor 3%;

Deionized water 2.2%.

The film former is polyvinylpyrrolidone.

The low detergent selected stimulus C ₁₂ -C ₁₈ alkyl glucosides.

The kaolin is a calcined kaolin.

The sodium lauryl sulfate is a granular sodium lauryl sulfate.

The polyol is propylene glycol.

The chelating agent is disodium EDTA, tetrasodium EDTA.

The pH adjusting agent is sodium citrate, citric acid.

The preservative is methylparaben, propylparaben.

Example 2

The instant low irritant laundry tablet of the present invention is composed of the following weight percent components:

Film former 30%;

Low stimulating detergent 5%;

Kaolin 10%;

Sodium lauryl sulfate 3%;

Fatty acid diethanolamide 10%;

Decanediol polyoxyethylene ether sulfate 0.1%;

Fatty alcohol polyoxyethylene ether 10%;

Chelating agent 5%;

PH regulator 0.1%;

Preservative 1%;

Fragrance 0.5%;

Deionized water 25.3%.

The film former is polyvinyl alcohol.

The low stimulating detergent is sodium lauroyl glutamate.

The kaolin is ultrafine kaolin.

The sodium lauryl sulfate is a granular sodium lauryl sulfate.

The chelating agent is disodium EDTA, tetrasodium EDTA.

The pH adjusting agent is sodium citrate, citric acid.

The preservative is methylparaben, propylparaben.

Example 3

The instant low irritant laundry tablet of the present invention is composed of the following weight percent components:

Film former 20%;

Low stimulating detergent 10%;

5% of kaolin;

Sodium lauryl sulfate 2%;

Fatty acid diethanolamide 5%;

Decylene diol polyoxyethylene ether sulfate 5%;

Fatty alcohol polyoxyethylene ether 5%;

Polyol 5%;

Chelating agent 2%;

PH regulator 2%;

Preservative 0.5%;

Fragrance 2%;

Deionized water was 36.5%.

The film former is polyvinylpyrrolidone.

The low irritant detergent is disodium lauramide based PEG-5 sulfosuccinate.

The kaolin is a soft kaolin.

The sodium lauryl sulfate is a granular sodium lauryl sulfate.

The polyol is selected from at least one of propylene glycol and glycerin.

The chelating agent is disodium EDTA, tetrasodium EDTA.

The pH adjusting agent is sodium citrate, citric acid.

The preservative is methylparaben, propylparaben.

Effect test

1. Washing sheet dissolution rate experiment

Detect the dissolution rate of the laundry sheet under the same environment and test at different temperatures The dissolution rate of the laundry sheet, the results are shown in Table 1:

Table 1

It can be seen from the above data that the laundry sheet of the present invention dissolves rapidly in 3-6 seconds. City

The laundry tablets are sold faster and dissolve immediately in hot and cold water, while the commercial products have a significant effect on temperature.

2. Methods for evaluating mildness

There are various methods for evaluating the mildness of surfactants, and there is currently no uniform standard. At present, the general evaluation methods for mildness are mainly divided into two categories: in vivo test and in vitro test. For safety reasons and meeting the needs of animal protection, the use of in vitro testing methods is currently strongly advocated, but most legislation still uses the results of in vivo tests as the test.

2.1 Living test

The in vivo test is mainly carried out on human skin and rabbit skin and rabbit eye mucosa, two of which are more common The methods used were the Driaize rabbit skin test and the Draize rabbit eye test. Duhring chamber test or Cupashing test is sometimes used, that is, a patch test is performed on the side of the front wrist of the human body to observe the phenomenon of erythema and edema caused by the intermittent test of the surfactant. There is also a hand dipping method, in which a human hand is immersed in a certain concentration of a surfactant solution to simulate a washing action or a dishwashing action, and after a certain period of time, the sebum shedding rate or protein dissolution property of the skin surface before and after the soaking is tested.

(1) Draize rabbit skin test

The Draize rabbit skin test was mainly conducted on rabbit skin, and sometimes in the skin of rats or Dutch pigs. The skin was coated with various concentrations to observe the degree of erythema and edema after skin application (see Table 2). The Draize rabbit skin test can be used as an independent test or as a preliminary test for human skin tests. Some rabbit skin test results are listed in Table 3.

Table 2 Evaluation and comparison of Draize test and RBC test

Table 3 Draize rabbit skin irritation index of several surfactants and laundry tablets of the present invention

sample Draize rabbit skin test total stimulation index LAS (alkylbenzene sulfonate) 5.5~6.1 AES (fatty alcohol polyoxyethylene ether sulfate) 1.5 to 6.4 AEO7 (fatty alcohol polyoxyethylene (7) ether) 3.0 to 4.9 AE09 (fatty alcohol polyoxyethylene (9) ether) 5.0～6.0 Washing sheet of Example 1 1.2 Washing sheet of Example 2 1.3 Washing sheet of Example 3 1.1

Draize rabbit eye test

0.1 mL of the test solution was applied to the cornea of the white rabbit, and the stimulation results were observed at intervals to be comprehensively evaluated (see Table 4). From Table 4, it can be seen that the degree of tolerance of the ocular mucosa to the surfactant (0.5% to 1.0%), followed by the anionic type, and the highest tolerance to the nonionic surfactant.

Table 4 Comparison of tolerance of rabbit eye mucosa to several surfactant stimuli and laundry tablets of the present invention

(Note: The higher the highest concentration of tolerance to stimulation, the more gentle the system is)

2.2 in vitro test

In vitro assays use in vitro cells or proteins to mimic organisms and observe the effect of surfactants on ex vivo proteins or cells to infer the extent of action on living tissue. The two most commonly used ex vivo tests are the red blood corpuscle test (RBC test) and the Zein test.

RBC test generally considers that if a stimulating substance reacts with a living protein, the reaction first occurs in the cell membrane. The RBC test, the red blood cell test, was carried out by using isolated red blood cells as a cell substitute to observe the effects of various surfactants on red blood cells. In this test, the hemolysis of the red blood cells by the surfactant was recorded as the L value, the denaturing effect of the hemoglobin was recorded as the D value, and the comprehensive index was characterized by L/D to evaluate the stimulating effect on the cells. The table below lists the results of RBC tests for some common surfactants.

Table 5 Comparison of RBC test results of some surfactants with RBC test results of the present invention

(Note: The higher the L/D value of the RBC test, the lower the irritation)

The above experimental results show that the irritancy of the present invention is relatively low, and is lower than that of the commercially available laundry tablet sample, and the irritancy of the aqueous solution of the combined laundry tablet is lower than that of the general detergent.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

An instant low-irritation laundry tablet characterized in that the laundry tablet is composed of the following weight percentage components: Film former 10-30%; Low stimulating detergent 5-20%; Kaolin 1-10%; Sodium lauryl sulfate 3-40%; Fatty acid diethanolamide 0.5-10%; Decanediol polyoxyethylene ether sulfate 0.1-10%; Fatty alcohol polyoxyethylene ether 0.1-10%; Polyol 0-10%; Chelating agent 0.1-5%; PH regulator 0.1-3%; Preservative 0.1-1%; Fragrance 0.5-3%; Deionized water 1-50%. The instant low irritant laundry tablet of claim 1 wherein said laundry tablet is comprised of the following weight percent components: Film former 20%; Low stimulating detergent 10%; Kaolin 5%; Sodium lauryl sulfate 2%; Fatty acid diethanolamide 5%; Decylene diol polyoxyethylene ether sulfate 5%; Fatty alcohol polyoxyethylene ether 5%; Polyol 5%; Chelating agent 2%; PH regulator 2%; Preservative 0.5%; Fragrance 2%; Deionized water 36.5%. The instant low irritant laundry tablet according to claim 1 or 2, wherein the film forming agent is at least one selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol crosslinked polymer, and polyvinyl alcohol. The instant low irritant laundry tablet according to claim 1 or 2, wherein the low stimulating detergent is selected from the group consisting of C ₁₂ -C ₁₈ alkyl glucosides; sodium lauroyl glutamate, lauryl amide PEG- At least one surfactant in the disodium sulfosuccinate. The instant low irritant laundry tablet according to claim 1 or 2, wherein the kaolin is selected from the group consisting of calcined kaolin, ultrafine kaolin or soft kaolin. The instant low irritant laundry tablet according to claim 1 or 2, wherein the sodium lauryl sulfate is a granular sodium lauryl sulfate. The instant low irritant laundry tablet according to claim 1 or 2, wherein the polyol is one or more selected from the group consisting of propylene glycol and glycerin. The instant low irritant laundry tablet according to claim 1 or 2, wherein the chelating agent is selected from the group consisting of EDTA disodium, one or both of EDTA tetrasodium. The instant low irritant laundry tablet according to claim 1 or 2, wherein the pH adjusting agent is selected from one or both of sodium citrate and citric acid. The instant low irritation laundry tablet according to claim 1 or 2, wherein: said preservative One or two selected from the group consisting of methylparaben and propylparaben.