KR101597995B1 - Transparent fabric softner composition - Google Patents

Abstract

(A) 5 to 30 parts by weight of a cationic surfactant; (b) 1 to 20 parts by weight of a stabilizer; And (c) 1 to 15 parts by weight of a solvent having a log P of greater than 2, wherein P is the ratio of partition coefficient to water and octanol of solvent, wherein log P is calculated by the following formula: to provide:

[Equation 1]

The fabric softener composition of the present invention is stable in transparency to provide aesthetic sensation to consumers, has excellent fiber flexibility, and is excellent in phase stability, so that phase separation does not occur during storage at a low temperature and a high temperature, little.

Fabric softener, stabilizer, partition coefficient

Description

[0001] Transparent fabric softener composition [0002]

More particularly, the present invention relates to a transparent fabric softener composition which is excellent in fiber softening power, generates little bubbles, does not require the use of a defoaming agent, stably maintains transparency, and has excellent storage stability.

Typical household fabric softeners are of the opaque type with a cationic flexible component dispersed. However, in recent years, there is an increasing interest in a fabric softener composition having a transparent or semi-transparent appearance. Cationic surfactants, which are mainly used as a fluxing agent, have considerable hydrophobicity in themselves, and extremely low solubility in water, so there is considerable technical effort to use them to provide transparent and stable softener compositions.

The initial transparent or semitransparent softening agent used was a conventional cationic surfactant such as dialkyldimethylammonium chloride, an alkyl ester quaternary ammonium salt derived from triethanolamine, an alkylimidazoline quaternary ammonium salt, and a high content of solvent. However, these softeners have not sufficient stability, such as being opaque when stored for a long time at a low temperature or a high temperature, or phase separation, and have problems such as limitation of the application of the fragrance due to the inherent odor of the solvent and cost increase. Therefore, in order to solve such problems, U.S. Patent No. 2002 / 35,053 discloses a transparent softener prescription technology using a specific molar number of alkylene oxide addition nonionic surfactant as a stabilizer, and Korean Patent Application No. 10-2006-59179 discloses an asymmetric alkyl group Discloses a transparent softener composition using an ester amide type ammonium salt cationic surfactant containing an alkenyl group. These compositions have the advantages of stability over time or transparency, but they suffer from the problem of excessive bubbles due to the asymmetric structure of the nonionic surfactant or cationic surfactant used as the stabilizer. A defoaming agent such as a silicone defoaming agent may be prescribed as a means for solving this problem, but the defoaming agent prescribes another problem such as a decrease in transparency and image stability.

In order to solve the above problems, an object of the present invention is to provide a transparent fabric softener composition which is excellent in fiber flexibility, has little bubble formation, does not require the use of an antifoaming agent, stably maintains transparency and has excellent storage stability.

According to an aspect of the present invention,

For the total composition

(a) 5 to 30 parts by weight of a cationic surfactant;

(b) 1 to 20 parts by weight of a stabilizer; And

(c) 1 to 15 parts by weight of a solvent having a log P of greater than 2,

Wherein P is the ratio of the partition coefficient of the solvent to water and octanol, and the log P is calculated by the following equation:

[Equation 1]

The cationic surfactant may be selected from the group consisting of a quaternary ammonium salt represented by the following formula (1) or a precursor thereof or a mixture thereof:

[Chemical Formula 1]

(In the formula 1,

R ₁ is C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl;

R ₂ is C ₁ -C ₃ alkyl;

,

,

또는

이며;P is

,

,

or

;

R ₃ is C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl;

l is an integer from 1 to 4;

m is an integer from 0 to 4;

n is an integer from 1 to 3;

X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a).

(2)

(In the formula (2)

R ₄ and R ₆ are C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl;

R ₅ are each independently C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl;

X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a).

The stabilizer may be represented by the following formula (3)

(3)

(3)

R ₇ Is a C ₆ -C ₁₂ linear or branched alkyl or alkenyl;

R ₈ to R ₁₀ are each independently alkyl having 1 to 3 carbon atoms;

Y is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a).

The solvent having a log P of more than 2 may be selected from the group consisting of diethylene glycol hexyl ether, diethylene glycol heptyl ether, diethylene glycol octyl ether, and dipropylene glycol hexyl ether, or a mixture thereof.

The ratio [{(b) + (c)} / (a)] of the weight of the stabilizer and the solvent having a log P of more than 2 to the weight of the cationic surfactant may be 0.5 to 1.0.

The fabric softening agent of the present invention does not require the use of an antifoaming agent because the generation of bubbles is remarkably small during washing and rinsing, and the transparency is stably maintained and the phase stability is excellent, so that phase separation does not occur even after storage for a long period of time.

The fabric softener of the present invention is excellent in the ability to impart flexibility to clothes and textile products, which are basic performances of a fabric softener, and has an antistatic effect, and provides aesthetics to consumers with a transparent appearance.

The fabric softening agent of the present invention has excellent dispersibility and is excellent in solubility, thereby reducing the amount of residue in the fibers during rinsing.

Hereinafter, the present invention will be described in detail so as to be easily carried out by those skilled in the art.

The present invention can be variously modified and can take various forms, and only specific embodiments corresponding thereto are described herein. It is to be understood, however, that the invention is not to be interpreted as limited to the particular forms disclosed, but on the contrary, it is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims .

The fabric softener compositions of the present invention comprise a cationic surfactant as a cationic softening component.

The cationic surfactant may be included in an amount of 5 to 30 parts by weight, preferably 10 to 20 parts by weight, based on the total composition. If it is contained in an amount of less than 5 parts by weight, the ability to impart flexibility to the fiber may be decreased, and if it is added in an amount exceeding 30 parts by weight, viscosity may increase rapidly, and stable and transparent compositions may be difficult to produce.

The cationic surfactant may be selected from the group consisting of a quaternary ammonium salt represented by the following formula (1) or a precursor thereof or a mixture thereof:

[Chemical Formula 1]

,

,

또는

이며; l 은 1 내지 4 의 정수이며; m 은 0 내지 4 의 정수이고; n 은 1 내지 3 의 정수이며; X 는 Cl^-, Br^- 또는 CH₃OSO₃ ^- 이다. Wherein R ₁ is C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl, and R ₂ is C ₁ -C ₃ alkyl; R ₃ is C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl; P is

,

,

or

; l is an integer from 1 to 4; m is an integer from 0 to 4; n is an integer from 1 to 3; X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a.

(2)

In Formula 2, R ₆ and R ₈ are C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl; R ₇ are each independently C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl; X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a.

Specific examples of the cationic surfactant include N, N-di (oleyl ester ethoxylate ethyl), N-methyl-N-hydroxyethylammonium methylsulfate, N-methyloleylamidoethyl- Imidazolinium methylsulfate, and the like, but the present invention is not limited thereto.

The fabric softener composition of the present invention comprises a stabilizer. The stabilizer of the present invention serves to stably maintain the transparency of the composition and also reduces the occurrence of bubbles during washing and rinsing.

The stabilizer may be included in an amount of 1 to 20 parts by weight, preferably 3 to 15 parts by weight, based on the total composition. If it is contained in an amount of less than 1 part by weight, it may be difficult to achieve the object of the present invention in order to maintain transparency for a long period of time. If it exceeds 20 parts by weight, bubbles may be generated and transparency may be deteriorated.

The stabilizer may be an alkylammonium salt represented by the following Formula 3:

(3)

In Formula 3, R < ₇ > Is a C ₆ -C ₁₂ linear or branched alkyl or alkenyl, R ₈ to R ₁₀ are each independently alkyl having 1 to 3 carbon atoms, and Y is Cl ^- , Br ^- or CH ₃ OSO ₃ ^- . Preferably, R ₈ to R ₁₀ may be the same and may be a methyl group.

A stabilizer, which is represented by the formula (3) is an R ₇ substituent as bonded to the quaternary cancer nonyum And R ₈ to R ₁₀ are not too long to be effective for transparency stabilization and reduce bubble generation during washing and rinsing.

Specific examples of the stabilizer include decyltrimethylammonium methylsulfate, lauryltrimethylammonium methylsulfate, myristyltrimethylammonium methylsulfate, and the like, but are not limited thereto.

The fabric softener compositions of the present invention comprise a solvent having a log P of greater than 2. The solvent has a hydrophobic property and a hydrophilic property so that it acts as an auxiliary surfactant and facilitates the formation of a microemulsion phase, thereby stably maintaining the transparency of the composition at a low temperature and a high temperature, and also reducing the occurrence of bubbles during washing and rinsing.

The solvent may be contained in an amount of 1 to 15 parts by weight, preferably 3 to 10 parts by weight, based on the composition. If it is contained in an amount of less than 1 part by weight, it may be difficult to achieve the object of the present invention in order to stably maintain transparency at a low temperature and a high temperature, and if it exceeds 15 parts by weight, .

In the log P, P is a value representing the partition coefficient of water to the solvent and octanol. The partition coefficient means the ratio of the concentration of a substance to each solvent in the two non-intermixing solvents. From the distribution coefficient, the degree of hydrophilicity or hydrophobicity of the substance can be known. The log P can be calculated by the following equation:

[Equation 1]

The solvent of the present invention may have a log P of more than 2. When log P is more than 2, it has both hydrophilicity and hydrophobicity and also acts as a surfactant, facilitating the formation of a microemulsion phase of the composition and ensuring transparency stably. In addition, it can be an effective solvent in a transparent composition because it does not cause bubbling due to its hydrophobicity.

Specific examples of the solvent include, but are not limited to, diethylene glycol hexyl ether (hexyl carbitol), diethylene glycol heptyl ether, diethylene glycol octyl ether, dipropylene glycol hexyl ether, and the like. These solvents may be used alone or in combination of two or more.

The ratio (Y) of the sum of the weight of the stabilizer and the solvent to the weight of the cationic surfactant may be 0.5 to 1.

Y = {(weight of stabilizer) + (weight of solvent)} / (weight of cationic surfactant)

When the weight ratio is less than 0.5, the content of the cationic surfactant is relatively large, so transparency can not be easily secured due to the hydrophobicity of the cationic surfactant, and there is a fear that the amount of bubbles to be increased in washing and rinsing. When the weight ratio is more than 1, The content may be relatively small and fiber flexibility may be decreased, and the smell of the solvent itself may result in an unsatisfactory flavor of the softener.

The fabric softener composition of the present invention may further contain components known in the art as auxiliary components to the extent that the object of the present invention is not impaired. The specific components and their contents can be arbitrarily adjusted by those skilled in the art. Specifically, antioxidants such as BHT, BHA and ascorbic acid can be used for phase stability of the final composition. Organic acids such as EDTA (ethylenediaminetetraacetate), NTA (nitrilotriacetate) and citric acid are used as chelating agents . Here, the polyvalent organic acids can also buffer the pH with time. It may also contain flavors, coloring matters, antimicrobial agents, anti-migration agents, anti-fouling agents, anti-foaming agents, processing agents, preservatives and anti-wrinkle agents.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. This is for the purpose of illustrating the present invention, and thus the scope of the present invention is not limited thereto.

< Example  1 to 14> fiber Softener  Produce

Fabric softening agents were prepared by conventional methods known in the art with the compositions of Table 1 and Table 2 below. The units shown in Tables 1 and 2 are parts by weight.

ingredient
Example One 2 3 4 5 6 7 8 9 Cationic Surfactants ¹⁾ 15 15 15 15 15 15 10 10 10 Decyl trimethyl
Ammonium methyl sulfate - - - 7 7 - - - 4 Lauryl trimethyl
Ammonium methyl sulfate 7 7 7 - - 4 4 6 - Diethylene glycol
Hexyl ether 5 - - 5 - 8 4 2 4 Dipropylene glycol
Hexyl ether - 5 - - 5 - - - - Diethylene glycol
Heptyl ether - - 5 - - - - - - Citric acid 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 incense 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Other Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Purified water Balance Balance Balance Balance Balance Balance Balance Balance Balance Y (weight ratio) 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8

ingredient
Example 10 11 12 13 14 Cationic Surfactants ¹⁾ 5 30 25 16 30 Decyl trimethyl
Ammonium methyl sulfate - - - - - Lauryl trimethyl
Ammonium methyl sulfate One 5 20 15 15 Diethylene glycol
Hexyl ether 3 10 5 One 15 Dipropylene glycol
Hexyl ether - - - - - Diethylene glycol
Heptyl ether - - - - - Citric acid 0.1 0.1 0.1 0.1 0.1 incense 0.5 0.5 0.5 0.5 0.5 Other Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Purified water Balance Balance Balance Balance Balance Y (weight ratio) 0.8 0.5 One One One

1) N, N-di (oleyl ester ethoxylate ethyl), N-methyl-N-hydroxyethylammonium methylsulfate

< Comparative Example  1 to 15> fiber Softener  Produce

Fabric softening agents were prepared by conventional methods known in the art with the compositions of Table 3 and Table 4 below. The units in Table 3 and Table 4 are parts by weight.

ingredient Comparative example One 2 3 4 5 6 7 8 9 Cationic Surfactants ^{1 )} 15 15 15 15 15 15 10 15 15 Lauryl trimethyl
Ammonium methyl sulfate - - 7 - - - - - - Myristyl trimethyl
Ammonium methyl sulfate 7 7 - - - - 4 7 7 Diethylene glycol
Hexyl ether - - - 7 7 7 - - - Dipropylene glycol
Hexyl ether 5 Diethylene glycol
Heptyl ether 5 Diethylene glycol
Butyl ether 5 Dipropylene glycol
Butyl ether 5 5 4 Lauryl alcohol
Ethoxylate (9 mole of EO) 5 2 Dow Corning Q1-1247 ²⁾ 0.5 Citric acid 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 incense 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Other Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Purified water Balance Balance Balance Balance Balance Balance Balance Balance Balance Y (weight ratio) 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.67 0.5

ingredient Comparative example 10 11 12 13 14 15 Cationic Surfactants ^{1 )} 15 15 15 15 35 3 Lauryl trimethyl
Ammonium methyl sulfate 25 0.5 7 7 7 7 Myristyl trimethyl
Ammonium methyl sulfate - - - - - - Diethylene glycol
Hexyl ether 5 5 0.5 20 5 5 Dipropylene glycol
Hexyl ether - - - - - - Diethylene glycol
Heptyl ether - - - - - - Diethylene glycol
Butyl ether - - - - - - Dipropylene glycol
Butyl ether - - - - - - Lauryl alcohol
Ethoxylate (9 mole of EO) - - - - - - Dow Corning Q1-1247 ²⁾ - - - - - - Citric acid 0.1 0.1 0.1 0.1 0.1 0.1 incense 0.5 0.5 0.5 0.5 0.5 0.5 Other Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Suitable amount Purified water Balance Balance Balance Balance Balance Balance Y (weight ratio) 2 0.37 0.5 1.8 0.34 4

1) N, N-di (oleyl ester ethoxylate ethyl), N-methyl-N-hydroxyethylammonium methylsulfate

2) Dimethylsiloxane (silicone antifoaming agent)

< Experimental Example  1> Transparency and transparency change over time

The turbidity (NTU value) of the fabric softener compositions of Examples 1 to 15 and Comparative Examples 1 to 15 was measured by a turbidimeter (Turbidimeter 2100AN) according to the initial and temperature conditions, The stability of physical properties over time was evaluated according to the following evaluation criteria. The results are shown in Tables 5 and 6.

[Turbidity and other visual evaluation criteria]

Below 10 NTU: completely transparent ◎

10 NTU or more to less than 30 NTU: Unscent Suspension Transparent ○

30 NTU or more to less than 80 NTU: unscented translucent △

Above 80 NTU: suspension, opaque X

< Experimental Example  2> Phase stability  evaluation

The phase stability of the fabric softener compositions of Examples 1 to 15 and Comparative Examples 1 to 15 after the elapse of time was evaluated according to the temperature, and the results are shown in Tables 5 and 6.

No phase separation: X

Phase separation occurred: ○

< Experimental Example  3> Bubble evaluation

The bubbles generated during washing of the fabric softener compositions prepared according to Examples 1 to 15 and Comparative Examples 1 to 15 were measured by the following methods, and the results are shown in Tables 5 and 6.

Washing machine: Automatic washing machine (10kg, Pulsator type)

Cleaning temperature: 25 ℃

Bathtub: 200 g Towel 5 sheets / 30 l Washing water

Test compound: towel (200 g, 100% cotton)

Softener concentration: 0.67 g / l

The degree of bubble formation on the surface of the washing water at the time of rinsing was evaluated by the following scale.

Radius less than 5 cm: ◎

Radius 5 cm or more to less than 10 cm: ○

Radius greater than 10 cm to less than 15 cm: △

More than 15 cm radius: X

< Experimental Example  4> Flexibility  evaluation

Flexibility of the fabric softener compositions of Examples 1 to 15 and Comparative Examples 1 to 15 was measured by the following conditions and methods, and the results are shown in Tables 5 and 6.

[Flexible force measurement condition]

Washing machine: Automatic washing machine (Pulsator type)

Cleaning temperature: 25 ℃

Bathtub: 200 g Towel 20 sheets / 60 l Washing water

Test compound: towel (200 g, 100% cotton)

Softener concentration: 0.67 g / l

[Flexible force measurement method]

The treated towel was touched by 20 panelists and scored according to the softness of the touch.

(1 point: very rough, 5 points: very soft)

4.0 or higher: ◎

3.0 or more to less than 4.0: ○

2.0 or more to less than 3.0:?

Less than 2.0: X

Item
Overdue condition Example Temperature
℃ term
(week) One 2 3 4 5 6 7 8 9 10 11 12 13 14
Turbidity
20 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ◎ ◎ 5 4 weeks ◎ ○ ○ ○ ○ ○ ◎ ◎ ○ △ ○ ○ ○ ○ 40 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ◎ ◎ Top
Qualitative
20 4 weeks ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 5 4 weeks ○ ○ ○ X ○ ○ ○ ○ ○ X ○ ○ ○ ○ 40 4 weeks ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Bubble power ○ ○ ○ ◎ ◎ ○ ○ ○ ◎ ○ ◎ ◎ ◎ ◎ Flexibility ◎ ◎ ◎ ◎ ◎ ◎ ○ ○ ○ △ ◎ ○ ○ ◎

Item
Overdue condition Comparative example Temperature
℃ term
(week) One 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Turbidity
20 4 weeks ◎ ◎ ◎ ◎ ◎ X X X △ ◎ X ○ ◎ X △ 5 4 weeks ○ ○ △ △ △ X X X △ △ X X ○ X △ 40 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ △ ◎ △ ◎ △ X △ Top
Qualitative
20 4 weeks ○ ○ ○ ○ ○ ○ X X ○ ○ X X ○ X ○ 5 4 weeks X X X X X X X X X ○ X X ○ X X 40 4 weeks ○ ○ ○ ○ ○ ○ ○ ○ X X X ○ X X ○ Bubble power ○ ○ ◎ △ △ △ ○ X ◎ ◎ ◎ △ ○ ○ ◎ Flexibility ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ○ ○ ◎ ○ ◎ X

According to Tables 5 and 6, the transparency of the fabric softener composition of the examples did not decrease with time, and transparency was stably maintained. The stability of the fabric softener at low temperature and high temperature was excellent. Bubble generation was less. In the case of the composition of the comparative example without the stabilizer of the present invention and the solvent, phase separation occurred at a low temperature and the phase stability was poor, and the amount of bubbles was larger than that of the examples.

As described above, the fabric softener composition of the present invention is excellent in the ability to impart flexibility to a fiber, which is a basic function of a fabric softener, and can provide aesthetics to a consumer with a transparent appearance and has excellent phase stability. Phase separation does not occur even after long-term storage. Further, it can be seen that bubbles are less likely to be generated in washing and rinsing, and therefore, they are suitable for use as a fabric softening agent.

Claims (5)

(a) 5 to 30 parts by weight of a cationic surfactant; (b) 1 to 20 parts by weight of a stabilizer; And (c) 1 to 15 parts by weight of a solvent having a log P of greater than 2, Wherein P is a ratio of partition coefficient of water to octanol of the solvent, and log P is calculated by the following formula (1): &lt; EMI ID = [Equation 1]

The method according to claim 1, Wherein the cationic surfactant is a quaternary ammonium salt represented by the following general formula (1) or (2), and a precursor thereof, or a mixture thereof: [Chemical Formula 1]

(In the formula 1, R ₁ is C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl; R ₂ is C ₁ -C ₃ alkyl; P is

,

,

or

; R ₃ is C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl; l is an integer from 1 to 4; m is an integer from 0 to 4; n is an integer from 1 to 3; X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a). (2)

(In the formula (2) R ₄ and R ₆ are C ₁₁ -C ₂₂ linear or branched alkyl or alkenyl; R ₅ are each independently C ₁ -C ₆ alkyl, C ₁ -C ₆ hydroxyalkyl or benzyl; X is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a). The method according to claim 1, Wherein the stabilizer is represented by the following formula (3): &lt; EMI ID = (3)

(3) R ₇ Is a C ₆ -C ₁₂ linear or branched alkyl or alkenyl; R ₈ to R ₁₀ are each independently alkyl having 1 to 3 carbon atoms; Y is Cl ^-, Br ^- or CH ₃ OSO ₃ ^- a). The method according to claim 1, Wherein the solvent having a log P of more than 2 is selected from the group consisting of diethylene glycol hexyl ether, diethylene glycol heptyl ether, diethylene glycol octyl ether and dipropylene glycol hexyl ether, or a mixture thereof. Composition. The method according to claim 1, (B) + (c)} / (a) of the sum of the weight of the stabilizer and the solvent having a log P of more than 2 and the weight of the cationic surfactant is 0.5 to 1.0. Composition.