JP3100781B2 - Liquid soft finish - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a liquid softener, more particularly a liquid softener having a reddish or purple hue.
In addition, the present invention relates to a liquid softening agent for clothing that has little dyeing of various fibers with dyes and pigments.

[0002]

2. Description of the Related Art Clothes produce an undesirable feeling due to the fact that the fiber treatment agent is washed away during repeated wearing and washing, or becomes hard due to deterioration of the fibers themselves. Therefore, in recent years, in many households, a softening agent capable of imparting flexibility and antistatic property to fibers has been frequently used.

[0003] At present, most of commercially available softeners for domestic use are cationic activators having 1-2 long-chain alkyl groups in one molecule, especially di (hardened tallowalkyl) dimethyl. The main component is an ammonium salt.

Recently, amine compounds and salts thereof have been reviewed as softener components from the viewpoint of cost reduction of the softener and environmental problems, and the softener itself has various pHs ranging from neutral to acidic. Things are being disclosed.

[0005] In addition, softeners of various hues are produced as commercial products, and in particular, a red or purple softener has high acceptability in terms of a soft image. The dyes used in the softener are described in, for example, JP-A-2-154065.
And JP-A-2-191769 and JP-A-2-210067. However, in the case of recent amine-based softeners, red- or purple-based softeners are not satisfactory in color stability or dyeing clothes. I couldn't.

[0006]

Under such circumstances, the present inventors have conducted intensive studies to solve the above problems, and as a result, have completed the present invention relating to a liquid softening agent for clothing.

That is, the present invention provides a liquid softening agent containing the following components (a) and (b) as essential components and having a liquid pH in the range of 1 to 6. (a) component; one or two hydrocarbon groups having 11 to 22 carbon atoms in the molecule;

[0008]

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3 to 30% by weight of a neutralized product of an amine compound having the component (b); a water-soluble red dye and / or a violet dye having both an amino group and a sulfonyl group in a molecule of 1 to 50%;
0 ppm.

In the present invention, as the amine compound (A) which is a precursor of the component (a) used as a flexible base material for clothing, the following compounds can be mentioned. May be used.

[0011]

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[0012]

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(Wherein, R ¹ , R ² ; a saturated or unsaturated hydrocarbon group having 11 to 21 carbon atoms R ³ ; an alkyl group having 1 to 4 carbon atoms or a hydroxyethyl or hydroxypropyl group R ⁴ ; 12 to 22 saturated or unsaturated hydrocarbon groups m, n; 2 to 6.) These amine compounds (A) are used to form (a)
Examples of the acid for obtaining a neutralized product as a component include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, and phosphoric acid, and organic acids having 6 or less carbon atoms such as acetic acid, lactic acid, glycolic acid, citric acid, and maleic acid. Among them, hydrochloric acid is the cheapest and has high performance. In the neutralization step, the amine compound (A) may be previously neutralized and dispersed in water, or the amine compound (A) may be dissolved in an aqueous acid solution.
May be added in a liquid or solid state. Of course, the amine compound (A) and the acid component may be simultaneously added. The amount of the component (a) is 3 to 30% by weight, preferably 4 to 25% by weight. (a) When the compounding amount of the component is less than 3% by weight, the flexibility is low and other softening agents must be used in large amounts in order to bring out sufficient performance. On the other hand, if it exceeds 30% by weight, the viscosity of the softening agent increases, and handling becomes difficult.

The component (b) of the present invention comprises a water-soluble red dye having both an amino group and a sulfonyl group in the molecule and / or
Or a purple dye, for example, the following: [Red dye] CI Direct Red 2 CI Direct Red 13 C.I.
I.Direct Red 17 C.I.Direct Red 28 C.I.Direct Red 33 C.
I.Direct Red 46 C.I.Direct Red 75 C.I.Acid Red 32 C.I.Acid Red 37 C.
I. Acid Red 42 C.I.Acid Red 52 [purple dye] C.I.Direct Violet 1 C.I.Acid Violet 11 C.I.Acid Violet 15 C.I.
I. Acid Violet 41 C.I.Acid Violet 49 C.I.Food Violet 2 The amount of these dyes is determined based on the hue stability of the softener and the preference of the color tone. ~Ten
It is 0 ppm. The component (b) must be added in an appropriate amount in order to give a desirable color tone as a product, and if it is less than 1 ppm, a sufficient color will not be produced or it will be discolored during storage. On the other hand, if it exceeds 500 ppm, it may be dyed on clothes at the time of treatment with the softening agent, which is not preferable. In the present invention, the amino group does not mean a cyclic amino group such as phthalocyanine.

The liquid softener of the present invention includes, in addition to soft components such as di-long-chain alkyl-type cationic activators and long-chain fatty acids used in ordinary liquid softeners, fragrances and other components other than the present invention. Pigment, polyoxyethylene (5-50 mol)
Alkyl or alkenyl (C ₁₂ ~C ₂₄₎ nonionic surfactants such as ethers, silicone compounds, antibacterial agents, ethanol, isopropyl alcohol, ethylene glycol, and solvents such as propylene glycol, sodium chloride, ammonium chloride,
A water-soluble salt such as calcium chloride may be added. The balance other than the components (a) and (b) and the optional components is water.

The order of compounding the components (a) and (b) may be any order. In addition, the liquid of the liquid soft finish of the present invention
pH is 1 to 6, preferably 1 to 4, particularly preferably 1.5 to
Adjusted to 3.5. It is not preferable that the pH is less than 1 because the influence of the unfinished solution of the softening agent on the clothes and the body is apprehended. On the other hand, if the pH exceeds 6, the storage stability of the component (a) is undesirably poor.

[0017]

According to the present invention, it is possible to obtain a good liquid softening agent which is stable in red or violet hue even after long-term storage and has little dyeing on clothing.

[0018]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto.

Example 1 3 g of polyoxyethylene (20 mol) lauryl ether (c-1 in Table 3) was dissolved in 150 g of warm water at 60 ° C, and the amino compound (a) shown in Table 1 at 70 ° C was dissolved under stirring. -1)
30 g is gradually added dropwise, and after 10 minutes, hydrochloric acid of approximately equimolar to this amine compound is added dropwise to adjust the pH to 2.0. This (a)
1 g of an aqueous solution of the dye b-1 in Table 2 previously dissolved at a concentration of 1% was mixed with the dispersion of the components to obtain a red-colored liquid soft finish. The hue stability and dyeing properties of this liquid soft finish were evaluated as follows, and good results were obtained as shown in Table 4. [Hue stability] The softener is stored at -5 ° C, 40 ° C, and 50 ° C for one month, and compared with the initial hue. ：: No change from the initial hue △: Red or purple lightened ×: Discolored [Dyeing property] 1 g of a liquid soft finish was dropped onto a cotton knit with a dropper and allowed to stand for 12 hours Then, wash with water. ：: no dyeing of red or purple dye ×: dyed of red or purple dye

Examples 2 to 15 and Comparative Examples 1 to 9 Using the component (a) shown in Table 1, the component (b) shown in Table 2, and the component (c) shown in Table 3, Various liquid softeners as shown in Table 1 were prepared and evaluated in the same manner as in Example 1. Table 4 shows the results.

[0021]

[Table 1]

[0022]

[Table 2]

[0023]

[Table 3]

[0024]

[Table 4]

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06M 13/00-13/535

Claims (1)

(57) [Claims] 1. A liquid softening agent containing the following components (a) and (b) as essential components and having a pH of 1 to 6 in the liquid. (a) component: one or two hydrocarbon groups having 11 to 22 carbon atoms in the molecule 3 to 30% by weight of a neutralized product of an amine compound having the formula (b): a water-soluble red dye and / or purple dye having both an amino group and a sulfonyl group in a molecule of 1 to 50%;
0ppm