JPH11181483A - Laundry adjuvant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a laundry adjuvant capable of continuously removing chloride ion in water, suppressing propagation of microorganisms in the laundering water and allowing the detergent to manifest the effect thereof at maximum by including a sodium salt of a fatty acid and a thiosulfate in a specific proportion. SOLUTION: The objective laundry adjuvant comprises 100 pts.wt. sodium salt of a fatty acid, 10-50 pts.wt. thiosulfate, and preferably further a paraben and/or p-hydroxybenzoic acid. When the paraben or the p-hydroxybenzoic acid is singly included, the content of the paraben is 10-50 pts.wt., and the content of the p-hydroxybenzoic acid is 5-50 pts.wt. When both of them are included, the total thereof is 5-50 pts.wt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry aid, and more particularly, to a laundry aid which has an excellent effect of removing chloride ions in water and can maximize the effect of a laundry agent mainly in a washing tub. Agent.

[0002]

2. Description of the Related Art Conventionally, in the washing of laundry mainly in a washing tub, various washing auxiliary agents have been used to assist the washing effect in addition to a washing agent comprising a surfactant for washing. Have been. One of them is an agent for removing chloride ions in water.

That is, the water used for washing laundry contains a considerable amount of chlorine ions derived from a disinfectant or the like applied in a water purification plant. Since the cleaning effect of the laundry detergent is significantly impaired, it is preferable to remove it as much as possible in order to maximize the cleaning effect of the laundry detergent.

Various agents can be used as the chlorine ion removing agent in water, such as calcium sulfite and thiosulfate.

[0005]

However, since calcium sulfite has low solubility in water, when it is used as a laundry aid for removing chloride ions in water, a sufficient effect of removing chlorine ions can be obtained. Therefore, it was insufficient to maximize the cleaning effect of the detergent.

[0006] Also, thiosulfate is expected to have high solubility in water and high ability to remove chloride ions in water, but because of its high solubility in water, thiosulfate has low durability as a laundry aid. There was a problem of chipping.

The present invention solves the drawbacks of these chloride ion removers, can effectively remove chloride ions in water, has excellent durability as a laundry aid, and is mainly used for washing in a washing tub. It is an object of the present invention to provide a laundry aid capable of maximizing the effect of the agent.

[0008]

Means for Solving the Problems In order to achieve the above object, the present inventors have focused on thiosulfate, and have conducted various studies for using it as a laundry aid. When thiosulfate was mixed with sodium fatty acid,
1. It can be used as a laundry aid which has not only an excellent effect of removing chloride ions in water but also has a sustainability; 2. Even when thiosulfate is mixed with mannan and lime, it can be a laundry auxiliary excellent in the effect of continuously removing chlorine ions in water, as described above. It has been found that by mixing paraben or parahydroxybenzoic acid with these laundry aids, a laundry aid having excellent antibacterial activity can be obtained.

The laundry aid of the present invention has been made based on these findings.
Or (2) 100 parts by weight of mannan, 1 to 50 parts by weight of thiosulfate, and 0.1 to 1.0 part by weight of lime. It is characterized by including.

The laundry aids (1) and (2) contain paraben and / or parahydroxybenzoic acid in addition to these two components. , 5 to 50 parts by weight of parahydroxybenzoic acid.
It is preferable to use parts by weight.

Since the fatty acid sodium constituting the laundry aid of the above (1) gradually dissolves in water, it is mixed alone with a thiosulfate which has high solubility and lacks persistence in water, and converts the thiosulfate to a fatty acid. By wrapping in sodium, the thiosulfate gradually dissolves in water together with the fatty acid sodium, and plays a role in increasing the persistence of the thiosulfate.

Further, paraben and parahydroxybenzoic acid are antibacterial agents, and if they are mixed, they are gradually dissolved in water during the washing process, and these antibacterial effects can be continuously obtained.

As the fatty acid of the fatty acid sodium, those having 16 to 22 carbon atoms are preferably used, and more preferably those having 17 to 19 carbon atoms. If the number of carbon atoms is less than 16, the effect of increasing the persistence of the thiosulfate is not sufficient, and if it is greater than 22, the effect of increasing the persistence of the thiosulfate is sufficient. Poor workability.

In order to enhance the durability of the thiosulfate, it is necessary to use an adhesive such as glue or an adhesive such as a chemical adhesive (epoxy resin adhesive or polyvinyl alcohol adhesive) when washing the laundry. A commercially available glue or adhesive which does not inhibit the effect of the agent or the laundry aid and does not adversely affect the laundry can be used in combination.

In addition, a plurality of kinds of sodium fatty acids having different carbon numbers of the fatty acids can be used.

Examples of the thiosulfate used together with the above-mentioned sodium fatty acid include sodium thiosulfate, calcium thiosulfate, magnesium thiosulfate and the like, and among them, sodium thiosulfate is preferably used.

Further, a plurality of thiosulfates having different metal species may be used in combination.

Paraben and parahydroxybenzoic acid are components that act as antibacterial agents and play a role in suppressing the growth of microorganisms from dirt attached to laundry.

The amount of the above fatty acid sodium, thiosulfate, paraben and parahydroxybenzoic acid is 10 to 50 parts by weight per 100 parts by weight of the fatty acid sodium.
Parts by weight, preferably 20 to 30 parts by weight, and paraben and parahydroxybenzoic acid, which are optional components, when used alone, paraben is 10 to 50 parts by weight, preferably 20 to 30 parts by weight, parahydroxybenzoic acid. The acid is 5
50 parts by weight, preferably 10 to 30 parts by weight, when both are used in combination, 5 to 50 parts by weight in total, preferably 10 to 10 parts by weight
It is 50 parts by weight, more preferably 20 to 40 parts by weight.

When the amount of thiosulfate is less than 10 parts by weight, the effect of removing chloride ions is insufficient.
Too much thiosulfate does not provide sufficient sustainability of the fatty acid sodium, and the thiosulfate disappears only quickly. Thiosulfate 2
At 0 to 30 parts by weight, dechlorination and elimination are optimal.

When paraben and parahydroxybenzoic acid are used alone, when the amount of paraben is less than 10 parts by weight and the amount of parahydroxybenzoic acid is less than 5 parts by weight, the antibacterial effect is insufficient. Beyond,
The antibacterial effect is saturated and uneconomical.

When both of these are used in combination, if the total amount is less than 5 parts by weight, the antibacterial effect is insufficient, and if it exceeds 50 parts by weight, the antibacterial effect is saturated and uneconomical.

The laundry aid (1) composed of the above-mentioned components is prepared by adding the above-mentioned sodium fatty acid and thiosulfate, and if necessary, paraben and / or parahydroxybenzoic acid thereto, and then adding them to a temperature of 80 to 95 ° C. And mixed substantially uniformly with a blender, then allowed to cool and solidify,
It can be prepared by making it into a ball shape of about 4 cm, a granule or powder of about 2 to 7 mm.

The amount of the laundry aid used in (1) differs depending on the water temperature, the amount of water, the type and amount of the laundry agent to be used, the function of the washing tub (washing machine), and the like, and cannot be unconditionally determined. However, when using various household electric washing machines commercially available from each home appliance manufacturer, and using various household enzyme detergents commercially available from each detergent manufacturer according to the dosage and usage, the water temperature is 5 to 50 ° C. If the amount is too small, there is no significance in using it, and if it is too large, the effect is saturated and uneconomical.
It is preferably about 20 g.

The washing aid (1) sufficiently exerts its effect in the above-mentioned water temperature. Normal,
Since such a water temperature can be easily secured throughout the year, the laundry aid (1) always exerts its effect under normal conditions. However,
When the water temperature is low, it is preferable to select and use those having a low carbon number as the fatty acids of the fatty acid sodium, and conversely, when the water temperature is high, it is preferable to use those having a high carbon number. And depending on the type of washing water (eg, remaining hot water from the bath, tap water directly from the faucet, tap water stored, etc.), or to be used properly under any conditions It is preferable that fatty acids having various carbon numbers are combined in advance and mixed.

The laundry aid (2) of the present invention wraps a thiosulfate which has a high solubility in water alone and lacks durability in water by mixing it with mannan and lime (solidified with lime to form a network). Thiosulfate in the mannan web) to supplement its sustainability.

As the mannan, glucomannan and other various mannan can be used, and various commercially available mannan can be used as they are or in powder form. As the lime, commercially available lime capable of solidifying mannan can be used as it is or in powder form.

The amounts of the above-mentioned mannan, lime and thiosulfate are 1 to 50 parts by weight, preferably 5 to 10 parts by weight, and lime 0.1 to 1.100 parts by weight based on 100 parts by weight of mannan. 0 parts by weight, preferably 0.3 to 0.7 parts by weight.

If the amount of thiosulfate is less than 1 part by weight, the effect of removing chloride ions is insufficient, and if it exceeds 50 parts by weight, the thiosulfate is too much and the persistence of fatty acid sodium cannot be sufficiently obtained. The faster the thiosulfate disappears, the less the use of the thiosulfate becomes meaningless, which is uneconomical. Thiosulfate 5
At 10 parts by weight, dechlorination and elimination are optimal.

The blending amount of thiosulfate is included in the range smaller than that of the laundry aid of (1) because the retention effect of solidified mannan on thiosulfate is lower than that of sodium fatty acid. Is weaker (in other words, the rate at which thiosulfate migrates into water through the mesh of solidified mannan is faster than the rate at which the thiosulfate migrates into water with the dissolved fatty acid sodium). This is because even with the compounding amount of, a good effect of removing chloride ions can be obtained.

However, the durability of thiosulfate is inferior to the case where sodium fatty acid is used. Therefore, the degree of solidification of mannan is adjusted according to the use conditions, as described later, or (2) Choose the shape of the laundry aid,
Means such as the use of a commercially available glue or adhesive similar to the case of the laundry aid of (1) may be considered.

In the laundry aid of (2), paraben and / or parahydroxybenzoic acid is blended in the same ratio as the laundry aid of (1), similarly to the laundry aid of (1). Can be. The laundry aid (2) composed of the above components is prepared by first dissolving mannan in hot water at 50 ° C to 60 ° C and allowing it to cool to 10 ° C to 20 ° C, and then adding paraben and / or parahydroxybenzoic acid. And mix.
This is then added to the thiosulfate and mixed. afterwards,
It can be prepared by adding lime, kneading and solidifying to form a ball of about 2 to 4 cm, or a granular or powdery of about 2 to 7 mm.

The compounding amount of lime may be such that mannan is solidified, but if it is small, the degree of solidification is low.
Therefore, the persistence of thiosulfate is low, and if it is large, the degree of solidification is high, and thus the persistence of thiosulfate is also high.Thus, considering the persistence of thiosulfate and the degree of solidification of mannan, The desired amount may be selected from the range.

In consideration of the persistence of thiosulfate (and paraben and parahydroxybenzoic acid), the thiosulfate (and paraben and parahydroxybenzoic acid) is used as the above-mentioned ball-shaped, granular or powdery core. It is preferable to prepare these shapes so as to be located in the part.

The amount of the laundry aid used in (2) is the same as in the case of the laundry aid in (1), such as the water temperature, the amount of water, the type and amount of laundry used, and the function of the washing tub (washing machine). By
Unlikely, it is not clear, but using various household electric washing machines marketed by each home appliance manufacturer and using various household enzyme detergents marketed by each detergent manufacturer according to their dosage and usage In, the water temperature is 5
At about 50 ° C., if the amount is too small, the use is not significant, and if the amount is too large, the effect is saturated and uneconomical. Therefore, the amount is preferably about 5 to 10 g per 10 liters of water.

However, when the water temperature is low, the thiosulfate (and paraben and parahydroxybenzoic acid) having a low retention effect and the thiosulfate (and paraben and parahydroxybenzoic acid) compounding amount may be low. If the water temperature is high, the amount of thiosulfate (and paraben and parahydroxybenzoic acid) is high, and the amount of thiosulfate (and paraben and parahydroxybenzoic acid) It is preferable to select and use those with less
Therefore, as in the case of the laundry aid of (1), depending on the season, the region, and the type of washing water (for example, remaining hot water in a bath, tap water directly from a faucet, or tap water stored). It is preferable that various conditions are combined in advance and mixed so that they can be used properly or can be suitably used under any conditions.

The laundry aids (1) and (2) of the present invention are:
Although it is compatible with any laundry detergent, the effect is particularly great when used with a laundry detergent such as an anionic surfactant, a cationic surfactant, or a higher fatty acid sodium salt.

The washing agent and the washing aid of the present invention (1) and (2) depend on the washing agent used, but generally, the washing agent of (1) is used for 100 parts by weight of the washing agent. If it is an auxiliary agent, 5 to 10 parts by weight, preferably 7 to 9 parts by weight,
In the case of the laundry aid (2), 3 to 5 parts by weight is used.

Thus, when actually washing the laundry,
In this amount, the laundry detergent and the laundry aids (1) and (2) are present in the water of the washing tub, and the laundry aids (1) and (2) are as described above per 10 liters of water. , (1)
It is preferable that the washing auxiliary agent is present at a concentration of about 10 to 20 g, and the washing auxiliary agent of (2) is present at a concentration of about 5 to 10 g.

The laundry aid of the present invention, in addition to the above-mentioned components, does not impair the effect of the laundry detergent or the laundry aid when washing the laundry, if necessary, and has an adverse effect on the laundry. Other various additives such as a coloring agent that does not give, an aromatic agent, a flame retardant, a water repellent and the like can be blended.

[0041]

As shown in FIG. 1, the laundry aid 1 of the present invention (1) is used.
In this method, the thiosulfate 2 and paraben or parahydroxybenzoic acid 3 as necessary are wrapped almost uniformly with the fatty acid sodium 4 so that the dissolution in water gradually progresses with the dissolution of the fatty acid sodium 4 Thus, thiosulfate 2 and paraben 3 are also gradually dissolved in water.

Further, as shown in FIG. 2, in the laundry aid (2) of the present invention, the thiosulfate 2 is wrapped in mannan 5 solidified in a lime mesh, and if necessary, paraben or parahydroxybenzoate is used. By dispersing the acid 3 in the mannan 5, the thiosulfate 2 and the paraben or parahydroxybenzoic acid 3 gradually migrate (dissolve) in the water through the mannan network.

As described above, both the laundry aids (1) and (2) delay the dissolution of thiosulfate, which has an effect of removing chloride ions in water, into water, thereby making the effect persistent. In addition, the chlorine ions in the water, which hinder the washing effect of the detergent, are continuously removed during the washing operation, so that the washing effect of the detergent is sufficiently exhibited.

[0044]

EXAMPLES (Example 1) Sodium stearate 100
Parts by weight, sodium thiosulfate 20 parts by weight, paraben 20
The parts by weight were heated to 90 ° C. and mixed. This was allowed to cool and solidify to form a ball having a diameter of about 3 cm.

The laundry auxiliary 20 of (1) thus produced
Using g, the measurement of the chloride ion concentration in the washing water according to the number of washings and the antibacterial test in the washing water were performed. It should be noted that each time one washing operation is completed, the washing auxiliary agent is filtered to drain only the washing water, and fresh tap water is added to the filtered washing auxiliary agent to perform the next washing.

One wash was performed by using 20 liters of tap water at 15 ° C. and stirring for 5 minutes. Each time one wash was completed, 2.0 ml of wash water was collected, and chlorine of the collected water was collected. At the same time as measuring the ion concentration, the collected water was transferred to a petri dish, cultured in an agar broth culture at 35 ° C., and the number of colonies in the petri dish after holding for 2 hours was measured.

The results are shown in FIGS. 3 and 4, respectively. In addition,
The chloride ion concentration was shown as a relative concentration to the chloride ion concentration in tap water before the addition of the laundry aid.

As shown in FIGS. 3 and 4, both the chlorine ion removing effect and the antibacterial effect are good up to 8 times of washing, and after 8 times, these effects gradually decrease, and the chlorine ion removing effect is improved. Shows that the antibacterial effect disappears at the tenth time and the antibacterial effect disappears at the ninth time.

Example 2 and Comparative Example 1 100 parts by weight of a commercially available glucomannan powder were dissolved in hot water heated to 50 ° C., allowed to cool to 10 ° C., and then added with parahydroxybenzoic acid 2
0 parts by weight were added and mixed. This was added to and mixed with 20 parts by weight of sodium thiosulfate, and 0.2 part by weight of lime was further added, kneaded and solidified to form a ball having a diameter of about 3 cm.

In Example 1, a chloride ion concentration test and an antibacterial test were carried out in the same manner as in Example 1 except that 15 g of the laundry auxiliary thus produced was used. 15 g of brand name "antibacterial egg" (component: percarbonate, carbonate, sulfate, amino acid sugar)
An antibacterial test was performed in the same manner as in Example 1 except that

The results of Example 1 are shown in FIGS. 5 and 6, and the results of Comparative Example 1 are shown in FIG.

As shown in FIG. 5, the chlorine ion removing effect of the laundry aid of the present invention is good up to four times of washing, and thereafter, the effect gradually decreases.

Further, the antibacterial effect of the laundry aid of the present invention and the commercially available antibacterial egg is better than that of the antibacterial egg up to 11 times of washing, as shown in FIG. It becomes almost the same when the number of washings is 12 and it can be seen that the antibacterial egg is better than the washing aid of the present invention thereafter.

<Washing Test> A washing test was carried out by simultaneously using 10 g of each of the laundry aids (1) and (2) produced in Examples 1 and 2 and 15 g of a cationic surfactant as a detergent. .

As a comparative test, a washing test was performed using only the laundry detergent without using the laundry aids (1) and (2).

In this test, a test piece was prepared by printing 2 g of mud on a 30 cm square cotton cloth, and washing with 15 ° C. washing water for 2 minutes.
It carried out by stirring for 5 minutes using 0 liter.

As a result, the cotton fabrics produced in Examples 1 and 2 and using the laundry aids (1) and (2) together with the laundry agent were cleanly washed to such an extent that mud stains remained slightly. However, the cotton cloth of the comparative test had considerable stains of mud.

[0058]

EFFECTS OF THE INVENTION The laundry aids (1) and (2) of the present invention can sufficiently remove the chlorine ions in water, so that they can sufficiently exert the washing ability of the laundry, and have antibacterial properties. Since the propagation of microorganisms in the washing water can be suppressed by the action of the agent, washing can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a configuration of a laundry aid of (1) of the present invention.

FIG. 2 is a diagram schematically showing a configuration of a laundry aid of (2) of the present invention.

FIG. 3 is a graph showing the results of a chloride ion concentration test in washing water according to the number of washings using the washing auxiliary agent of Example 1 (1).

FIG. 4 is a diagram showing the results of an antibacterial test in washing water according to the number of washings using the washing auxiliary agent of Example 1 (1).

FIG. 5 is a graph showing the results of a chlorine ion concentration test in washing water according to the number of washings using the washing aid of Example 2 (2).

FIG. 6 is a graph showing the results of an antibacterial test in washing water according to the number of times of washing using the laundry aid of Example 2 (2) and a commercially available antibacterial egg.

[Explanation of symbols]

 Reference Signs List 1 laundry aid of (1) 11 laundry aid of (2) 2 thiosulfate 3 paraben and / or parahydroxybenzoic acid 4 fatty acid sodium salt 5 mannan solidified with lime

Claims (4)

[Claims] 1. A laundry aid comprising 100 parts by weight of a fatty acid sodium and 10 to 50 parts by weight of a thiosulfate. 2. The composition further contains paraben and / or parahydroxybenzoic acid, and when each contains paraben and parahydroxybenzoic acid alone, 10 to 50 parts by weight of paraben and 5 to 50 parts by weight of parahydroxybenzoic acid.
The laundry aid according to claim 1, wherein the amount is 50 parts by weight, and when both are included, the total amount is 5 to 50 parts by weight. 3. Mannan 100 parts by weight, thiosulfate 1 to 1
A laundry aid comprising 50 parts by weight and 0.1 to 1.0 part by weight of lime. 4. The composition further comprises paraben and / or parahydroxybenzoic acid, and when each contains paraben alone, 10 to 50 parts by weight of paraben and 5 to 50 parts by weight of parahydroxybenzoic acid.
The laundry aid according to claim 3, wherein the amount is 50 parts by weight, and when both are included, the total amount is 5 to 50 parts by weight.