JP2693803B2 - Concentrated softening agent for clothing - Google Patents

Description

TECHNICAL FIELD The present invention relates to a softening agent, and more particularly to a concentrated type softening agent for clothing, which is less thickened with time.

[Problems to be solved by conventional technology and invention]

Clothes have an unfavorable feeling because the fiber treatment agent is washed off during repeated wearing and washing, or the fibers are hardened due to deterioration of the fibers themselves. For this reason, in recent years, in many households, a softening agent that can impart flexibility and antistatic properties to fibers has been widely used.

Currently, most of the commercially available household softening agents are cationic active agents having 1 to 2 long chain alkyl groups in one molecule, especially di (hardened tallow alkyl) dimethyl ammonium salt. It is the main component.

These soft bases containing a quaternary ammonium salt as a main component are poorly soluble in water and are usually manufactured in the form of a 3 to 5 wt% aqueous dispersion or emulsion. With the increase in target clothing that uses softening agents, we aim to reduce distribution and packaging costs and reduce inventory space at homes and retail stores.
There is a strong demand for a concentrated softening agent for clothing, which is a highly concentrated aqueous dispersion.

However, when the concentration of the softening base is 5% by weight or more, the above-mentioned aqueous dispersion is remarkably thickened, and is
It causes various troubles.

Conventionally, in order to produce such a high-concentration softening agent, 1) a method of adding a water-soluble cationic activator, 2) a method of adding a higher alcohol or an ethione oxide adduct of alkylphenol, 3) urea or A method of adding ethylene glycol or the like 4) A method of adding a water-soluble salt is known.

However, in the cases of 1) to 3), the degree of concentration is insufficient, or thickening occurs over time, and a sufficient effect cannot be obtained.

In the case of 4), although the effect of decreasing the initial viscosity is recognized, the effect of suppressing the increase in viscosity over time is small, and addition of a large amount of salt tends to facilitate separation of the aqueous dispersion, resulting in a satisfactory concentration. No type of fabric softening finish has been obtained.

[Means for solving the problem]

Under such circumstances, the inventors of the present invention have conducted diligent research to solve the above problems, and as a result, when dispersing a high-concentration flexible base, the addition of a specific polyether-modified silicone derivative improves the initial physical properties. In addition, the present inventors have found that the thickening with time can be significantly suppressed, and based on this finding, the present invention on a concentrated type softening agent for clothing has been completed.

That is, the present invention relates to (a) a quaternary ammonium salt, (b) a molecule containing a structural unit represented by the following formula (1) and a polyether modification represented by the formula (2) or (and) formula (3). Containing the specified structural unit as an essential constituent, and the weight ratio of the polyoxyethylene chain part is 50% of the total weight.
Above, and further silicone derivative having a molecular weight of 5,000 to 2,000,000 (M, n is 2 or 3, l is 0 or 1, and Ya, Yb, Yc, and Yd are polyoxyalkylene groups, respectively) as an active ingredient. It provides a finishing agent.

In the present invention, examples of the (a) quaternary ammonium salt used as the flexible base material for clothing include the following, and two or more kinds may be mixed and used.

R ¹ : C _{8 to} C ₂₂ saturated or unsaturated linear or branched alkyl group or hydroxyalkyl group R ² : C _{8 to} C ₂₄ saturated or unsaturated linear or branched alkyl group or hydroxyalkyl group R ³ , R ⁴ , R ⁶ : C ₁ -C ₃ alkyl group or hydroxyalkyl group or However, n = 10, Y = hydrogen or CH ₃ R ⁵ : C _{24 to} C ₃₆ saturated or unsaturated branched alkyl group or hydroxyalkyl group R ⁷ , R ⁸ : C _{7 to} C ₂₁ saturated or unsaturated straight chain Chain or branched alkyl group or hydroxyalkyl group A, B: C _{1 to} C ₃ alkylene group X: CH ₃ SO ₄ , C ₂ H ₅ SO ₄ , CnH ₂ n ₊₁ COO with n = 0 to 17, CnH ₂ n ₊₁ OPO
₃ for n = 8-18, HOCH ₂ COO, Halogen In the component (b) of the present invention, the compound having the constitutional unit represented by the formula (1) and the constitutional unit represented by the formula (2) as essential constitutional components is a silicone oil having Si—H A compound which can be obtained by reacting an alkylallyl ether in the presence of a metal catalyst, and which has a constitutional unit represented by the formula (1) and a constitutional unit represented by the formula (3) as essential constitutional components is , An amino-modified silicone can be obtained by an addition reaction of polyoxyalkylene, which essentially requires ethylene oxide. As the polyoxyalkylene group, two or more kinds of oxyalkylene groups such as a polyoxyethylene group and a polyoxypropylene group may be present.

The polyether-modified silicone as the component (b) has a molecular weight of 5,000 to 2,000,000, preferably 10,000 to 1,00.
It is in the range of 0,000. The total weight of the EO chain portion is 50% by weight or more, preferably 70% by weight or more, and particularly 80% by weight or more of the total molecular weight.

The present invention sterically protects the particles of the quaternary ammonium salt in water by the remarkable bulkiness and large molecular weight of the component (b) to prevent agglomeration between the particles, suppress thickening, and smooth the silicone. It seems that the feeling of slippage improves depending on the sex.

(A) in the concentrated softening agent for clothing of the present invention,
The content of (b) is 10 to 20% by weight, preferably 10 to 20% by weight of the component (a), and 0.2 to 10% by weight, preferably 0.5 to 5% by weight, particularly 0.5 to 3% by weight of the component (b). % Is appropriate.

When the amount of component (a) is less than 10% by weight, the advantage of concentration is less than that of the conventional softener having a normal concentration, the concentration is more than 30% by weight, the viscosity is high, and various troubles in handling are caused. Occurs.

When the amount of the component (b) is less than 0.2% by weight, the initial viscosity is high, the effect of suppressing the increase in viscosity over time is low, and the sliding feeling characteristic of silicone cannot be obtained.

 On the other hand, if it exceeds 10% by weight, it is economically disadvantageous.

The concentrated softening agent for clothes of the present invention includes fragrances, dyes, nonionic activators, silicone compounds, antibacterial agents, isopropyl alcohol, ethylene glycol, propylene glycol, etc. which are used in usual softening agents for clothes. A solvent or a water-soluble salt such as common salt, ammonium chloride or calcium chloride may be added.

The mixing procedure of the component (a), the component (b) and the other component is not particularly limited, but in general, the component (a) is softened in a predetermined amount of the aqueous solution or dispersion of the component (b). Depending on the point
The component (a) is charged at room temperature to 70 ° C. and stirred. Other components such as nonionic activators and salts may be added together with the component (b), or may be added after the components (a) and (b) have been blended. The most efficient way to reduce the initial viscosity of the concentrated softening agent for clothing is to add other components such as component (b) and salt to the concentrated aqueous dispersion of component (a). On the other hand, the most facility-friendly compounding procedure is a method in which the components (a) and (b) or a part of the other components are mixed in advance and dispersed in water.

In any of these cases, the mixer can be used with a blade mixer, a line mixer, or a high-pressure sprayer, but after mixing with a kneader or a blade mixer in advance,
If a stirrer having a large shearing force is used, the dispersion performance will be good.

〔The invention's effect〕

The concentrated type softening agent for clothing of the present invention containing the components (a) and (b) as essential components can maintain a proper handling viscosity for a long period over a wide temperature range. Moreover, excellent flexibility and slippery feeling can be imparted to various fibers.

〔Example〕

Hereinafter, the present invention will be described specifically with reference to Examples.
The present invention is not limited to these.

Examples 1 to 10 and Comparative Examples 1 to 3 The following evaluations were performed using the softening agents shown in Table 3 including the component (a) shown in Table 1 and the component (b) shown in Table 2. In addition, IV of the structure of (a) component points out said Formula IV.

1) Physical properties and stability Concentrated softening agent for clothing at -10 ℃, room temperature, 50 ℃
It was stored for 20 days and the appearance and fluidity were measured. Third result
It is shown in the table.

All the concentrated type softening agents for clothing of the present invention were good with almost no change over time.

2) Softness Commercially available cotton towels and knitted underwear, acrylic fiber,
The polyester fiber and the blended fiber were repeatedly washed five times with a commercially available detergent Zabu (registered trademark, manufactured by Kao Corporation) to remove the detergent attached to the cloth, and then 0.1% of the concentrated type softening agent for clothing of the present invention was obtained. Weight% aqueous solution (effective component conversion, 3.5 ° DH
It was treated with hard water) at 25 ° C. and a bath ratio of 1/30 for 1 minute under stirring, air-dried in the room, and then left in a constant temperature and humidity room at 25 ° C. and 65% RH for 24 hours. Similarly, when the softness was compared with the clothing treated with the usual concentration of the softening agent, all had sufficient softness.

3) Evaluation of slippery performance Regarding the clothing used for the evaluation of softness, paired comparison was made with the clothing treated with di-cured beef tallow alkyl dimethyl ammonium chloride (Comparative Example 1) as a reference comparative product, and the following evaluation was performed. It was evaluated according to the standard.

+2 The slipperiness is better than that of the control.

+1 The feeling of slipperiness is better than that of the control.

 0 It feels slightly smoother than the control.

-1 The contrast is slightly smoother.

-2 The contrast is more slippery.

Claims (2)

(57) [Claims] 1. A quaternary ammonium salt, (b) a constitutional unit represented by the following formula (1) and a polyether modification represented by the formula (2) or (and) formula (3) in the molecule. Containing the specified structural unit as an essential constituent, and the weight ratio of the polyoxyethylene chain part is 50% of the total weight.
Above, and further silicone derivative having a molecular weight of 5,000 to 2,000,000 (M and n are 2 or 3, l is 0 or 1, and Ya, Yb, Yc, and Yd are polyoxyalkylene groups, respectively), (a) component 10 to 30 wt%, (b) component 0.2 Concentrated softening agent for clothing, characterized in that it is contained at a concentration of up to 10% by weight. 2. The component (a) is 10 to 20% by weight, and the component (b) is
The concentrated softening agent for clothing according to claim 1, which contains 0.5 to 5% by weight.