JP2992419B2 - Soft finish - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soft finish, and more particularly, to a liquid soft finish which imparts excellent flexibility and elasticity to various fibers and is stable even under severe storage conditions. .

[0002]

2. Description of the Related Art
Most of the products marketed as home softeners are
It is a composition mainly composed of a quaternary ammonium salt having two long-chain alkyl groups in one molecule as represented by di (hardened tallow alkyl) dimethylammonium chloride. The reason for this is that the quaternary ammonium salt has a good softening effect on various fibers in a small amount.

However, 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 fibers. It is difficult to say that if the treatment is carried out at a higher concentration, the elasticity of the garment may be reduced and the texture may be impaired.

Further, since the above quaternary ammonium salt has a strong hydrophobicity, if the stirring power is low when it is poured into rinse water, the quaternary ammonium salt is poorly dispersible in water, which may cause unevenness in clothing. There is. In particular, when stored at a low temperature for a long period of time, the viscosity may increase, the gel may be formed, or the separation may occur. Commercially available soft finishes contain additives such as polyoxyethylene-based nonionic surfactants, electrolytes and solvents in addition to the above quaternary ammonium salts to improve dispersibility in water and long-term storage. However, the effect is still insufficient.

[0005] In addition, conventionally, liquid soft finishes using various amines as soft bases are known. For example, JP
JP-A-2-59796 discloses a composition containing a long-chain alkylamine such as methyldi (hardened tallowalkyl) amine to impart flexibility to fibers.
No. 0 discloses an acylated alkanolamine, a water-soluble alkanolamine.
A fibrous material finishing agent containing a quaternary ammonium salt and a fatty acid ester, which imparts smoothness and a comfortable touch to the fiber,
JP-A-61-167083 discloses a quaternary ammonium salt, a condensation product of a higher fatty acid and a hydroxy lower alkyl polyamine, and a softener having good dispersibility containing an alkylamine polyglycol ether. 8
JP-A-5368 discloses a softening composition containing a dilong-chain alkylamine-anionic surfactant ion-pair complex, a non-silicone wax and a liquid carrier, and JP-A-2-6662 discloses a hydroxy lower alkylalkylenediamine. A fabric conditioning composition containing an amine such as a condensate of a higher fatty acid and an amphoteric fabric conditioning agent,
JP-A-2-14076 describes a cloth conditioning composition containing a dilong-chain alkylamine-polyfunctional carboxylic acid complex and imparting flexibility and antistatic property, respectively.

Further, Japanese Patent Application Laid-Open No. 52-5394 discloses a fabric conditioning composition containing a mono- and di-long-chain alkylalkylenediamine antistatic agent and a quaternary ammonium softener.

However, these amine-containing soft finishes are relatively better in dispersibility and storage stability than quaternary ammonium salt-containing soft finishes, but are still insufficient in flexibility and elasticity. .

Accordingly, it is an object of the present invention to impart excellent flexibility, antistatic property and elasticity to various fibers, and to provide excellent storage stability and stable long-term flexibility even under severe storage conditions. To provide a finishing agent.

[0009]

Means for Solving the Problems The present inventors have conducted intensive studies on a softener containing an amine in order to achieve the above object, and as a result, have found that a special (dilong chain type) tertiary monoamine compound or its neutralization is effective. Finishing agent containing a product or a quaternized product thereof and a specific amphoteric compound has a softening effect equal to or more than that of di (hardened tallow alkyl) dimethylammonium chloride, which has been widely used in the past, and The present inventors have found that elasticity (puffiness) can be imparted to clothing and that the clothing is stable even under severe storage conditions, and the present invention has been completed.

That is, the present invention contains the following components (a) and (b), and the weight ratio of the components (a) and (b) is (a) / (b) = 60/40. ~ 98/2,
It is intended to provide a softening agent characterized in that the content of the component (a) and the component (b) is 2 to 40% by weight. (A) A tertiary monoamine (A) represented by the following general formula (I) of the following [Chemical formula 3] (same as the general formula (I) of the above [Chemical formula 1]) or an acid of the tertiary monoamine (A) A quat or a quaternary product of the tertiary monoamine (A).

[0011]

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(B) The following general formulas (II) to (I)
V) One or more compounds selected from the amphoteric compounds represented by the general formulas (II) to (IV) in the above [Chemical Formula 2].

[0013]

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Hereinafter, the softening agent of the present invention will be described in detail.

As the tertiary monoamine (A) of the component (a) of the present invention, more specifically, compounds represented by the following [Chemical Formula 5] can be mentioned.

[0016]

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Of these tertiary monoamines (A),
Particularly, the compound of the above (I-1) is preferable in terms of flexibility and elasticity.

The tertiary monoamine (A) is obtained by converting a compound represented by the following formula (III) obtained by cyanoethylation and hydrogenation of a dialkanolamine such as N-lower alkylalkanolamine or diethanolamine into a compound having 12 carbon atoms.
To 22 fatty acids. Further, there is no problem even if a compound represented by the following [Chemical Formula 7] or an unreacted fatty acid obtained as a by-product of the condensation reaction is contained.

[0019]

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[0020]

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Examples of the acid for obtaining the neutralized product from the tertiary monoamine (A) include inorganic acids such as hydrochloric acid, nitric acid, phosphoric acid, and sulfuric acid, acetic acid, lactic acid, glycolic acid, citric acid, and maleic acid. Of these, organic acids having 6 or less carbon atoms can be mentioned, and hydrochloric acid is the cheapest and has high performance. In addition, the neutralization step may be performed by dispersing a neutralized tertiary monoamine (A) in advance in water, or charging the tertiary monoamine (A) in a liquid or solid state into an acid aqueous solution. It may be done by doing. Of course, the tertiary monoamine (A) and the acid may be simultaneously introduced into water.

The quaternized tertiary monoamine (A) can be obtained by a known method using an alkyl halide such as methyl chloride or an alkyl sulfate compound such as dialkyl sulfate.

The amphoteric compound of the component (b) of the present invention is more specifically represented by the following [Chemical Formula 8] or [Chemical Formula 9]
The following are mentioned.

[0024]

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[0025]

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Among these amphoteric compounds, the compounds (IV-7) and (IV-8) are particularly preferable from the viewpoint of storage stability.

In the present invention, the weight ratio of the component (a) to the component (b) is (a) / (b) = 60/40 to 98 in view of flexibility, stability and storage stability. / 2 is preferable, and 75/25 to 98/2 is more preferable.

In consideration of the viscosity and handleability of the product when commercializing the soft finish of the present invention,
Content (total amount) of component (a) and component (b)
Is 2 to 40% by weight, preferably 3 to 30% by weight, particularly preferably 4 to 25% by weight.

The soft finish of the present invention may further comprise a silicone compound such as dimethylpolysiloxane, dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group, particularly preferably a partially modified polyoxyalkylene group. By blending the dimethylpolysiloxane thus obtained, it is possible to improve the feel of softly-treated clothing without impairing the water absorption performance. These silicone compounds are preferably blended in an amount of 0.3 to 5% by weight based on the entire softening agent.

When the soft finish of the present invention is used as an aqueous liquid soft finish, an inorganic electrolyte such as sodium chloride, calcium chloride or magnesium chloride is added to the soft finish in order to adjust the viscosity. It is preferable to add 0.5 to 0.4% by weight.

Further, the softening agent of the present invention includes polyoxyethylene (5 to 5) used in a general liquid softening agent.
0 mole) alkyl or alkenyl (C ₁₂ -C ₂₄₎ ether or polyoxyethylene (5-50 moles) nonionic surfactants such as alkyl or alkenyl amine, ethanol, isopropanol, propylene glycol and ethylene glycol, such as glycerine A solvent or urea can be blended. In addition, a known nonionic or cationic compound, a long-chain alcohol, or the like may be used in combination as a soft base.

Further, the softening agent of the present invention contains a polymer latex, a pigment or a dye for the appearance of the product, a fluorescent whitening agent for the whiteness of the finished product, and a material for the production, transportation and handling. An antifoaming agent such as silicone may be blended for defoaming, and a fragrance may be blended for improving the taste at the time of use and after finishing.

The softening agent of the present invention is prepared, for example, by adding and mixing the above components (a) and (b), and if necessary, the above optional components to water. It is preferable to adjust the pH of the soft finish of the present invention to 1.2 to 5.0 by adding a pH adjuster such as phosphoric acid, sulfuric acid or nitric acid.

Although the softening agent of the present invention is effective for various fibers, the fibers to which the softening agent of the present invention is particularly preferably applied include natural fibers such as cotton, silk and wool, acrylics and the like. Polyester, polyamide, nylon,
Examples include synthetic fibers such as polyurethane, and regenerated fibers such as rayon, cupra, and acetate.

[0035]

Next, the present invention will be described in detail with reference to examples.
The present invention is not limited to these examples.
The compounds used in the following examples and comparative examples are as shown in the following [Table 1].

[0036]

[Table 1]

Examples 1 to 20 and Comparative Examples 1 to 5 Using the components (a) and (b) shown in the above [Table 1], soft finishes having the formulations shown in the following [Table 2] were prepared respectively. did. In each case, the total amount of the components (a) and (b) was adjusted to 8% by weight, and polyoxyethylene (20 mol) lauryl ether was added to the total amount of the components (a) and (b). 1% by weight with respect to
0.1% by weight of aCl ₂ was added and the pH was adjusted to 2.2 ± 0.3 with the remainder being water.

Each of the obtained soft finishes was evaluated for flexibility, elasticity and stability by the following methods. The results are shown in Table 2 below.

<Evaluation of flexibility and elasticity> (1) Treatment method 2 kg of a commercially available cotton towel and 1 kg of an acrylic jersey were
Using a commercially available detergent attack (manufactured by Kao Corporation, registered trademark) in 3.5 ° DH hard water for 5 times, washing (30 liter washing machine) repeatedly, removing the fiber treating agent attached to each fiber, and then adding water. 1.5 g of the dispersed soft finish formulation was charged and treated at 25 ° C. for 1 minute with stirring.

(2) Evaluation method The cloth treated by the above method was air-dried in a room and then heated at 25 ° C. and 65%
It was left in a constant temperature and humidity room of RH for 24 hours. These fabrics were evaluated for flexibility and elasticity. The evaluation of flexibility and elasticity was performed by comparing a pair of cloth treated with 10 cc of a 15% by weight aqueous solution of di (hardened tallow alkyl) dimethylammonium chloride as a control. The evaluation criteria are as follows. +2: softer or more elastic than the control. +1; slightly softer or more elastic than the control. 0; same as control. -1; the control is slightly soft or slightly less elastic than the control. -2: the control is soft or less elastic than the control.

<Evaluation of Stability> The soft finish was stored under the following conditions, and the appearance was evaluated according to the following criteria. (1) Storage conditions (a) 50 ° C (b) Repetition of 50 ° C and 30 ° C (1 cycle / 1 day) (c) Repetition of 30 ° C and -10 ° C (1 cycle / 1
Day)

(2) Evaluation criteria ；: No change in appearance for 2 months. Δ: No change in appearance for 1 month, separation or thickening after 2 months. X: Separation or thickening occurred after one month.

[0043]

[Table 2]

As is evident from the results shown in Table 2 above, the soft finish of the present invention (Examples 1 to 20) imparts flexibility and elasticity to the fibers and has severe storage conditions. Also has sufficient stability.

[0045]

The soft finish of the present invention imparts excellent flexibility, antistatic properties and elasticity to various fibers, and has excellent storage stability, and is stable for a long time even under severe storage conditions. It is something.

Claims (1)

(57) [Claims] 1. The composition contains the following components (a) and (b), and the weight ratio of the components (a) and (b) is (a) /
(B) = 60/40 to 98/2, wherein the content of the component (a) and the component (b) is 2 to 40% by weight. (A) a tertiary monoamine (A) represented by the following general formula (I), a neutralized product of the tertiary monoamine (A) with an acid, or a quaternary product of the tertiary monoamine (A) . Embedded image (B) One or more compounds selected from the amphoteric compounds represented by the following formulas (II) to (IV). Embedded image