KR101633462B1 - Unit dose liquid detergent wrapped with water soluble film - Google Patents

Abstract

The present invention relates to a liquid detergent composition packaged with a water-soluble film, which can prevent an excessive amount of detergent from being packed in a water-soluble film in an amount necessary for a single washing, By minimizing the use, it is possible to provide an excellent safety, an excellent low-temperature storage stability and a rinsing property.

Description

[0001] The present invention relates to a liquid detergent composition,

The present invention relates to a liquid detergent composition packaged in a water-soluble film, and more particularly, to a detergent composition which is packed with a water-soluble film in an amount necessary for one-time washing to prevent an excessive detergent from being used and minimizes the inconvenience of detergent dispensing To a liquid detergent composition packaged in a water-soluble film having excellent safety, low-temperature storage stability and rinsability by minimizing the use of substances suspected of being harmful to human body.

Commonly used laundry detergents are powder and liquid laundry detergents. In order to use these detergents, there is an inconvenience that the amount of detergent required for measuring the amount of clothing to be washed and the degree of contamination must be measured using a measuring spoon or a measuring cup. Especially, since it is necessary for the consumer to measure the scale of the measuring spoon or the measuring cup directly, it is difficult to quantitatively quantify and it is possible to spill or spill the detergent at the time of weighing, so that excessive detergent is used, do. Various types of laundry detergents have been developed to solve this problem. Typical examples are a unit dose laundry detergent in which a powdery, liquid laundry detergent is packaged in a polyvinyl alcohol film as a water-soluble polymer.

However, in the case of a unit dose liquid detergent packed with a water-soluble film, it is disadvantageous to use an ethanolamine component having a controversial human hazard as a neutralizing agent and / or a liquid pH adjusting agent of an anionic surfactant. Diethanolamine in ethanolamines is classified as a carcinogenic substance corresponding to carcinogenic group 2B in the International Agency for Research on Cancer, and monoethanolamine and triethanolamine are also classified as di It can not be said to be a safe component since ethanolamine is partially contained and / or naturally produced and mixed.

In the case of using an alkali metal and / or an alkaline earth metal hydroxide generally used for neutralization and pH adjustment purposes in addition to the ethanolamine component, there is a poor stability phenomenon in which the metal ion is reduced and precipitated due to the characteristics of the water- Nonionic surfactant that does not require neutralization. In the case of a single application composition, the ethanolamine mixture, which is controversial for the hazard, has a temperature below room temperature (25 ° C) due to the high pour point of the free or nonionic surfactant, It is disadvantageous in that it is not easily dissolved in washing as well as a disadvantage of an aesthetic aspect and a problem that a rheological property is deteriorated because a fatty acid component requiring neutralization as a bubble inhibitor can not be applied.

U.S. Patent No. 6,037,319, U.S. Patent No. 7,074,748 and Korean Patent Publication No. 2004-0067668 disclose a composition and a manufacturing method of a liquid laundry detergent packaged with a water-soluble film package. However, a monoethanol Amine, and a unit dose liquid detergent composition packaged in a water-soluble film excellent in low-temperature storage stability and rinsability without applying an ethanolamine component has not been disclosed.

An object of the present invention to solve the above-mentioned problems is to prevent an excessive amount of detergent from being used by packing the amount of detergent required for one-time washing with a water-soluble film, and to minimize inconvenience of detergent metering.

It is another object of the present invention to provide a liquid detergent composition which is packaged in a water-soluble film which is excellent in safety by minimizing the use of ethanol amines and the like suspected of being harmful to human body and which is not turbid or gelled even at low temperature and excellent in rinsability.

According to an aspect of the present invention,

(a) from 70 to 85% by weight of a nonionic surfactant represented by formula (1);

(b) 10 to 20% by weight of an alkylene glycol; And

(c) 2 to 10% by weight of water,

And is packaged in a water-soluble film.

≪ Formula 1 >

R < ₁ > -O- (EO) m (PO) NH

(Wherein R ₁ is a branched alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, EO is ethylene oxide, m is an average addition mole number of ethylene oxide of 1 to 10, PO is Propylene oxide, and n is an average addition mole number of propylene oxide of 1 to 10.)

The liquid detergent composition packaged with the water-soluble film according to the present invention is excellent in safety by minimizing the use of substances suspected of being harmful to human body, does not become turbid or gelated even at low temperature storage, and exhibits excellent rinsability.

The present invention relates to a liquid detergent composition packaged in a water-soluble film, wherein the liquid detergent composition is excellent in safety by using a nonionic surfactant as a main component without using an ethanolamine component, which is a substance suspected of being harmful to human body, It is possible to provide excellent rinsing properties without addition of acid salts and / or antifoaming agents and excellent stability without being cloudy or gelled upon storage at low temperatures.

A liquid detergent composition packaged in a water-soluble film according to the present invention comprises (a) from 70 to 85% by weight of a nonionic surfactant represented by the formula (1), (b) from 10 to 20% by weight of an alkylene glycol, and By weight, and is packaged in a water-soluble film.

(a) a nonionic surfactant

The nonionic surfactant is included to improve the rinsability of the liquid detergent composition. The nonionic surfactant is represented by the following formula (1), and it is preferable that the nonionic surfactant is contained in an amount of 70 to 85% by weight based on the total weight of the liquid detergent composition. If the content is less than 70% by weight, the stability of the water-soluble film may deteriorate and the film may be dissolved to cause leakage. If the content is more than 85% by weight, the stability of the film may deteriorate, resulting in turbidity or gelation Lt; / RTI >

≪ Formula 1 >

R-O- (EO) m (PO) n-H

Wherein R is a branched alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, preferably 12 to 14 carbon atoms, EO is ethylene oxide, and m is an average addition mole number of ethylene oxide 1 to 10, PO is propylene oxide, and n is an average addition mole number of propylene oxide of 1 to 10.)

(b) an alkylene glycol

The alkylene glycol serves as a plasticizer to help prevent the curing of the solubilizing agent and the water-soluble film, and is preferably contained in an amount of 10 to 20% by weight based on the total weight of the liquid detergent composition, more preferably 12 to 20% 18% by weight. When the content is less than 10% by weight, the phase stability of the liquid deteriorates to lower the transparency of the liquid detergent. When the content exceeds 20% by weight, stability of the water-soluble film deteriorates, The shape is changed and the aesthetic satisfaction is lowered.

Specifically, the alkylene glycol is represented by the general formula (2), and it is more preferable that the degree of polymerization is within 50 considering the phase stability and / or the stability of the water-soluble film.

(2)

HO- (R ₂ ) x -OH

Wherein R ₂ is a linear or branched alkyl group having 1 to 6 carbon atoms when x is 1 and a linear or branched alkylene oxide having 1 to 6 carbon atoms when x is 2 to 50. [

(c) Water

The water can act as a solubilizing agent that dissolves representative and / or minor constituents of the liquid detergent compositions of the present invention and can act as a plasticizer to help prevent the water-soluble film from curing. The water is preferably contained in an amount of 2 to 10% by weight, more preferably 5 to 7% by weight based on the total weight of the liquid detergent composition. When the content is less than 2% by weight, the effect as a solubilizer is not realized and the phase stability is deteriorated. When the content is more than 10% by weight, the stability of the water-soluble film is deteriorated, Or the shape is deformed, and the aesthetic satisfaction is lowered.

The liquid detergent composition packed with the water-soluble film according to the present invention may be used in an appropriate amount in a conventional manner, as long as it does not deviate from the effect of the present invention. For example, enzymes, perfumes, fluorescent whitening agents, pigments, antioxidants, pH adjusting agents, preservatives, silicone antifoaming agents, and the like.

It is also preferred that the liquid detergent composition of the present invention is packaged in a water-soluble film, which includes polyvinyl alcohol, partially hydrolyzed polyvinyl acetate, alginate, cellulose ether, polyethylene oxide, Can be used, and polyvinyl alcohol is most preferable.

The water-soluble film may be rapidly dissolved in washing, and the thickness of the film is preferably 50 to 100 micrometers (占 퐉) so as to ensure storage and stability of the liquid detergent composition. If the thickness is less than 50 탆, the liquid detergent composition may be dissolved or deformed when stored for a long period of time. If the thickness is more than 100 탆, the liquid detergent composition may not be rapidly dissolved in washing water during washing.

Hereinafter, the liquid detergent composition according to the present invention will be described by way of examples. The following examples and comparative examples are set forth for the purpose of clearly illustrating the present invention, but the technical scope of the present invention is not limited thereto. Unless otherwise stated in the following table, units are percent by weight.

≪ Examples and Comparative Examples &

A liquid detergent composition was prepared using the conventional methods known in the art according to the ingredients shown in the following Tables 1 to 3, and the liquid detergent composition thus prepared was individually packaged into a polyvinyl alcohol film to prepare a liquid A detergent composition was prepared.

(The thickness of the polyvinyl alcohol film used for packaging is 75 占 퐉, and the amount of the liquid detergent composition used per package is 25 g)

ingredient Example One 2 3 4 5 6 7 8 9 10 Nonionic surfactant ^{1 )} 70 85 75 77 75 80 80 74 78 72 Propylene glycol 18 10 20 10 17 14 12 18 12 18 Monoethylene glycol - - - - - - - - - - Polyethylene glycol - - - - - - - - - - water 9 2 2 10 5 3 5 5 7 7 Addition of a ^second) 3 3 3 3 3 3 3 3 3 3 Sum 100 100 100 100 100 100 100 100 100 100

ingredient Example 11 12 13 14 15 16 Nonionic surfactant ^{1 )} 75 75 75 75 75 75 Propylene glycol - 3 - - 3 - Monoethylene glycol 12 15 18 - - - Polyethylene glycol - - - 12 15 18 water 10 4 4 10 4 4 Additive ^{2 )} 3 3 3 3 3 3 Sum 100 100 100 100 100 100

ingredient Comparative Example One 2 3 4 5 6 7 8 9 10 11 12 Nonionic surfactant ^{1 )} 60 65 90 95 75 80 70 65 85 85 75 75 Propylene glycol 25 20 6 2 - 8 22 30 12 11 11 2 Monoethylene glycol - - - - - - - - - - - - Polyethylene glycol - - - - - - - - - - - - water 12 12 One - 22 9 5 2 - One 11 20 Additive ^{2 )} 3 3 3 3 3 3 3 3 3 3 3 3 Sum 100 100 100 100 100 100 100 100 100 100 100 100

1) The nonionic surfactant is a polyoxyethylene propylene alkyl ether in which R ₁ is a mixed branched chain alkyl group having 12 to 14 carbon atoms and the average addition mole number of ethylene oxide and propylene oxide is 12 in the above formula (1).

2) Additive is a mixture of fragrance, pigment and other trace elements.

<Experimental Example>

1) Phase stability evaluation

The liquid detergent compositions prepared according to Examples 1 to 16 and Comparative Examples 1 to 12 were stored at a storage temperature of 0 ° C for one week and then evaluated according to the evaluation criteria shown in Table 4. The stability evaluation results are shown in Tables 7 to 9 Respectively.

Phase stability criterion ○: Excellent (transparent) ?: Normal (fine turbidity) X: Bad (opaque)

2) Evaluation of rinsability

The rinseability evaluation was carried out using a front-load washing machine (LG Electronic) used in ordinary households. The washing temperature of the washing machine was adjusted to 40 ° C. and washed for 30 minutes. The rinsing was carried out twice for 5 minutes each. The temperature of the rinsing water was adjusted to 25 ° C. during the rinsing. The dewatering of the laundry was carried out at 800 rpm for 5 minutes. The samples used for the measurement were 25 g each of the liquid detergent compositions prepared in Examples 1 to 16 and Comparative Examples 1 to 12, 1.2 kg of towels were used as laundry. The rinsability was determined according to the evaluation criteria shown in the following Table 5 based on the amount of bubbles generated in the rinsing step by indicating the scale from 0 to 25 in the transparent window of the washing machine, and the results are shown in Tables 7 to 9.

Rinseability evaluation standard ○: Excellent (the amount of bubbles generated is 3 or less) △: Normal (bubble generation amount is indicated by scale 3 to 5) X: Defective (bubble generation amount exceeding display scale 5)

3) Evaluation of Film Stability

The liquid detergent compositions prepared according to Examples 1 to 16 and Comparative Examples 1 to 12 were stored at room temperature (25 ° C) for one week and then evaluated according to the evaluation criteria shown in Table 6. The results are shown in Table 7 9.

Film Stability Evaluation Criteria Good: Excellent (No film change) : Fair (film sagging) X: Poor (film sag and leakage)

Evaluation standard Example One 2 3 4 5 6 7 8 9 10 Low temperature stability ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Rinseability ○ △ ○ ○ ○ ○ ○ ○ ○ ○ Film Stability ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Evaluation standard Example 11 12 13 14 15 16 Low temperature stability ○ ○ ○ ○ ○ △ Rinseability ○ ○ ○ ○ ○ ○ Film Stability ○ ○ ○ ○ ○ ○

Evaluation standard Comparative Example One 2 3 4 5 6 7 8 9 10 11 12 Low temperature stability ○ ○ △ X X X ○ ○ X X ○ △ Rinseability ○ △ △ △ ○ ○ ○ ○ ○ ○ ○ ○ Film Stability X △ ○ ○ X ○ X X ○ ○ △ X

As shown in Tables 7 to 9, it can be confirmed that the liquid detergent compositions prepared through the examples are superior in low temperature stability, rinsability and film stability to the comparative examples. That is, it can be confirmed that the phase stability, the rinsing property and the water-soluble film stability are degraded when the content ranges for each component out of the present invention are exceeded.

Accordingly, the liquid detergent composition packaged with the water-soluble film according to the present invention is excellent in safety by minimizing the use of a substance suspected of being harmful to human body, and is not susceptible to turbidity or gelation even at low temperature storage, and is effective in exhibiting excellent rinsability.

Claims (4)

(a) 70 to 85% by weight of a nonionic surfactant represented by the following formula (1);
(b) 10 to 20% by weight of an alkylene glycol; And
(c) 2 to 10% by weight of water,
Packaged in a water-soluble film,
Wherein the alkylene glycol is represented by the following general formula (2) and has a degree of polymerization of 50 or less.
&Lt; Formula 1 >
R < ₁ > -O- (EO) m (PO) NH
(Wherein R ₁ is a branched alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, EO is ethylene oxide, m is an average addition mole number of ethylene oxide of 1 to 10, PO is Propylene oxide, and n is an average addition mole number of propylene oxide of 1 to 10.)
(2)
HO- (R ₂ ) x -OH
Wherein R ₂ is a linear or branched alkyl group having 1 to 6 carbon atoms when x is 1 and a linear or branched alkylene oxide having 1 to 6 carbon atoms when x is 2 to 50. [
delete The method according to claim 1,
Wherein the water-soluble film is polyvinyl alcohol.
The method according to claim 1,
Wherein the water-soluble film has a thickness of 50 to 100 占 퐉.