JP2763648B2 - Soft finish - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a soft finish, and more particularly, a liquid soft finish capable of imparting excellent flexibility and elasticity (fluffiness) to various fibers. It is about.

[Problems to be solved by conventional technology and invention]

Currently, most of the products commercially available as household softeners are compositions mainly composed of quaternary ammonium salts having one to two long-chain alkyl groups in one molecule. The reason for this is that the quaternary ammonium salt has a good softening effect on various fibers in a small amount.

The above quaternary ammonium salts have a remarkable softening effect on cotton, but are not sufficiently effective on synthetic fibers such as acrylic, polyester and polyamide. If the treatment is performed at a high concentration, the elasticity of the garment is reduced, and the texture may be impaired.

In the case of long-term storage, the viscosity may increase, the gel may be formed, or the polymer may be separated, particularly at a low temperature.

For this reason, various polyoxyalkylene-based nonionic activators, electrolytes, and solvents other than the soft component are required, and many of them require stabilization by blending them, but the effect is still insufficient.

[Means for solving the problem]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned drawbacks, and as a result, have reached the present invention.

That is, the present invention provides a softening agent comprising an aqueous dispersion essentially comprising the components (a) and (b), and containing the components (a) and (b) in a total amount of 4 to 40% by weight. Is what you do.

Component (a): at least one component having a positron, having a structure in which the positron can be delocalized to three or more atoms containing sp ² carbon as an essential component, and optionally having a linking group; A cationic compound having a long-chain alkyl group or alkenyl group having 11 to 22 carbon atoms.

Component (b): When there is one long-chain alkyl group or alkenyl group of component (a), one or more cation interfaces selected from the following formulas (b-1) and (b-2) An activator, wherein component (a) / component (b) = 98/2 to 2/98 (weight ratio).

In the case where the component (a) has two or more long-chain alkyl groups or alkenyl groups, one or more cationic surfactants selected from the following formulas (b-3) and (b-4) And component (a) / component (b) = 99/1 to 6/94 (weight ratio).

[Wherein, R ₁ , R ₅ : alkyl group or alkenyl group having 12 to 22 carbon atoms R ₂ , R ₃ : methyl group, ethyl group, hydroxyethyl group or hydroxypropyl group R ₄ , R ₆ : carbon group having 11 to 12 carbon atoms 21 alkyl groups or alkenyl groups X: halogen, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ m: 2 or 3 The component (a) used in the present invention must have a structure in which a positron can be delocalized on three or more atoms including the sp ² carbon atom. For this reason, the atomic orbitals of the atoms in the component (a) are oriented in the same direction, the orbital overlap between the component (a) becomes large, and the arrangement of the component (a) becomes orderly. It is considered to be expressed.

As a specific example of the component (a), the following formula (a-
Examples thereof include neutralized products of the compounds represented by 1) to (a-3) with inorganic or organic acids.

[Wherein R ₇ is an alkyl or alkenyl group having 12 to 22, preferably 16 to 22 carbon atoms, R ₈ : same as R or H ₇ ] The component (b) of the present invention is a compound known as a flexible base. is there. In the formulas (b-1) to (b-4), R ₁ and R ₅ are an alkyl group or alkenyl group having 16 to 22 carbon atoms, and R ₄ and R ₆ are an alkyl group or alkenyl group having 15 to 21 carbon atoms. Is preferred.

In the present invention, the mixing ratio of the components (a) and (b) is important in terms of flexibility, elasticity, and storage stability.

In the present invention, when (b-1) and (b-2) are used, the mixing ratio of the components (a) and (b) is (a)
Component / (b) component = 98/2 to 2/98, and when (b-3) and (b-4) are used, (a) component / (b) component = 99
/ 1 to 6/94, but the preferred mixing ratio of the components (a) and (b) is (a) / (b) = 80/20 to 20/80.

Silicone compounds such as dimethylpolysiloxane, dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups, particularly preferably dimethyl partially modified with polyoxyalkylene groups, By blending the polysiloxane, it is possible to improve the feel of softly-treated clothing without impairing the water absorption performance. These silicone compounds are (a)
It is preferable to add 0.3 to 5% by weight based on the total amount of the component and the component (b).

The softening agent of the present invention has almost the same softening effect as the conventional softening agent containing only the component (b) alone, but it is surprising that elastic softness can be obtained. Do you get it.

In order to use the composition of the present invention as an aqueous liquid softener, the total weight of the components (a) and (b) in the composition is preferably from 10 to 40% by weight. When using an aqueous liquid softening agent, an inorganic electrolyte such as sodium chloride, calcium chloride, and magnesium chloride is used to adjust the viscosity to 0.05 to 0.
It is desirable to add 4% by weight.

Although the soft finish of the present invention has high stability for long-term storage, it is also preferable to use polyoxyethylene (5 to 50 mol) alkyl or alkenyl (C) for stabilization under severe storage conditions.
_12-24 ) A nonionic surfactant such as ether, a solvent such as propylene glycol or ethylene glycol, or urea can be blended. Further, known esters, nonionic or cationic compounds, long-chain alcohols, long-chain fatty acids and the like may be used in combination as a soft base.

Pigments or dyes can also be incorporated for product appearance, optical brighteners for finished whiteness, and fragrances for use and after finishing.

〔The invention's effect〕

The soft finish of the present invention can impart sufficient flexibility and antistatic properties to various fibers, and can provide excellent elasticity.

〔Example〕

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.

The components (a) and (b) used in the examples and comparative examples are shown below.

Examples 1 to 12 The compositions having the formulations shown in Table 5 were evaluated for flexibility and elasticity by the following methods.

<Evaluation of flexibility and elasticity> (1) Treatment method 3.5 kg of 2 kg of commercially available cotton towel and 1 kg of acrylic jersey
After washing 5 times repeatedly (30 L washing machine) with a commercially available detergent attack (manufactured by Kao Corporation, registered trademark) in DH hard water to remove the fiber treating agent attached to each fiber, the blended composition shown in Table 4 was used. 1.5 g of the active ingredient was added, and the mixture was treated under stirring at 25 ° C. for 1 minute.

In each case, 1% by weight of the polyoxyethylene-modified dimethylpolysiloxane was added to the total amount of the components (a) and (b).

(2) Evaluation method After air-drying the cloth treated by the above method indoors, 25 ° C, 65% RH
In a constant temperature and humidity room for 24 hours.

 These fabrics were evaluated for flexibility and elasticity.

The evaluation of flexibility and elasticity was carried out by a pair comparison using a cloth treated with 10 cc of a softener comprising 15% by weight of dihydrogenated tallow alkyldimethylammonium chloride as a control. The evaluation is expressed as follows.

+2; softer or more elastic than control +1; slightly softer or slightly more elastic than control 0; same as control -1; control slightly softer or slightly less elastic than control -2; softer or more control Lower elasticity As shown in Table 3, the use of the compound of the present invention provides an effect that satisfies both flexibility and elasticity.

Examples 9 to 11, Comparative Examples 4 and 5 In order to evaluate the elasticity of the compositions having the compositions shown in Table 4, the pile height of cotton towels was measured.

<Evaluation of Elasticity> Cotton towels treated in the same manner as in Examples 1 to 8 were folded in eight, three of them were stacked and pressed, and pressed at a pressure of 5 g / cm ² for 5 minutes. Was measured. The higher the height of the towel, the better the elasticity.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) D06M 13/00-13/535 D06M 15/00-15/715

Claims (4)

(57) [Claims] 1. An aqueous dispersion essentially comprising the components (a) and (b), wherein the components (a) and (b) are present in a total amount of 4%.
Soft finish containing up to 40% by weight. Component (a): at least one component having a positron, having a structure in which the positron can be delocalized to three or more atoms containing sp ² carbon as an essential component, and optionally having a linking group; A cationic compound having a long-chain alkyl group or alkenyl group having 11 to 22 carbon atoms. Component (b): When there is one long-chain alkyl group or alkenyl group of component (a), one or more cation interfaces selected from the following formulas (b-1) and (b-2) An activator, wherein component (a) / component (b) = 98/2 to 2/98 (weight ratio). In the case where the component (a) has two or more long-chain alkyl groups or alkenyl groups, one or more cationic surfactants selected from the following formulas (b-3) and (b-4) And component (a) / component (b) = 99/1 to 6/94 (weight ratio)
It is. [Wherein, R ₁ , R ₅ : alkyl group or alkenyl group having 12 to 22 carbon atoms R ₂ , R ₃ : methyl group, ethyl group, hydroxyethyl group or hydroxypropyl group R ₄ , R ₆ : carbon group having 11 to 12 carbon atoms 21 alkyl groups or alkenyl groups X: halogen, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ m: 2 or 3 ] 2. The soft finish according to claim 1, wherein the three atoms capable of delocalizing the component (a) are composed of carbon and nitrogen. 3. A dimethylpolysiloxane and / or a dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group is contained in an amount of 0.3 to 5% by weight based on the total amount of the components (a) and (b). The soft finish according to claim 1 or 2, wherein the soft finish is prepared. 4. The softening agent according to claim 3, wherein the modified dimethylpolysiloxane is a dimethylpolysiloxane partially modified with a polyoxyalkylene group.