JP2989973B2 - Liquid 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 liquid soft finish, and more particularly to a liquid soft finish capable of imparting excellent flexibility and elasticity (fluffiness) to various fibers.

[0002]

2. Description of the Related Art
Commercially available products as softeners for household use are mostly quaternary ammonium salts having 1-2 long-chain alkyl groups in one molecule represented by di (hardened tallow alkyl) dimethylammonium chloride. The main component.
The reason for this is that the quaternary ammonium salt shows a good softening effect on various fibers even in a small amount. However, although the quaternary ammonium salt has a remarkable softening effect on cotton, it is not sufficiently effective for synthetic fibers such as acrylic, polyester, and polyamide fibers. When treated with, there is a problem that the elasticity of the clothing is reduced and the texture may be impaired.

[0003] Further, the above-mentioned softening agent for home use containing a quaternary ammonium salt as a main component, when stored for a long period of time, has a problem that it thickens, gels, or separates, especially at low temperatures. is there. For this reason, various polyoxyethylene-based nonionic activators other than the quaternary ammonium salts, electrolytes, and solvents are required, and many of them require stabilization by blending them, but the effect is still insufficient. Not.

[0004] Further, the above-mentioned soft finishes mainly based on quaternary ammonium salts are usually marketed and used as dispersions of 4 to 20%, but quaternary ammonium salts are hydrophobic. Because of its strongness, when it is poured into rinse water, if the stirring power is weak, the dispersibility in water is poor, and there is a possibility that the clothing will be uneven. Therefore, in the case of commercially available softeners, various additives are blended in addition to the quaternary ammonium salt to improve the dispersibility in water, but the effect is still insufficient.

On the other hand, liquid softeners based on various amines as softer bases are conventionally known. For example, JP
JP-A-597965 discloses a composition for imparting flexibility to a fiber containing a long-chain alkylamine such as methyldi (hardened tallowalkyl) amine. JP-A-58-60070 discloses an acylated alkanolamine, Japanese Unexamined Patent Publication (Kokai) No. 61-167083 discloses a fiber material finishing agent which imparts smoothness and a comfortable hand to fibers containing a water-soluble quaternary ammonium salt and a fatty acid ester. A good dispersing softener containing a hydroxy lower alkyl polyamine polyglycol ether is disclosed in Japanese Patent Application Laid-Open No. 61-275474, which is a stable stabilizer for fabric treatment containing a di (higher alkyl) cyclic amine and Bronsted acid. The aqueous dispersion is disclosed in JP-A-64-8536.
Japanese Patent Application Laid-Open No. 2-14076 discloses a softening composition containing a dilong-chain alkylamine-anionic surfactant ion-pair complex, a non-silicone wax and a liquid.
A softener containing a dilong chain alkylamine-polyfunctional carboxylic acid complex and a fabric conditioning composition for imparting antistatic properties are described.

Further, Japanese Patent Application Laid-Open No. 52-5394 discloses that
Fabric conditioning compositions containing mono- or dilong-chain alkylalkylenediamine static inhibitors and quaternary ammonium based softeners are described. However, the above-mentioned liquid soft finishes based on various amines as soft bases have dispersibility,
The storage stability is relatively good as compared with a softener containing a quaternary ammonium salt as a main component, but the softening performance is still insufficient.

[0007] Accordingly, an object of the present invention is to provide a liquid soft material having an excellent softening effect, a good elasticity of the treated garment, without impairing the texture, and an excellent dispersibility in water and excellent storage stability. To provide a finishing agent.

[0008]

The present inventors have conducted intensive studies on a softener containing an amine. As a result, a neutralized product or quaternized product of a specific amine compound has excellent flexibility and elasticity to clothes. The present inventors have found that the properties (plumpness) can be imparted, and have completed the present invention.

The present invention has been made based on the above findings, and has the following general formula [2] (same as the above [1]).
It is intended to provide a liquid softening finish characterized by containing a neutralized or quaternized product of the compound represented by the formula (1) as an essential component.

[0010]

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Hereinafter, the liquid softener of the present invention will be described in detail. The essential component in the liquid softener of the present invention is a compound represented by the general formula [Chemical Formula 2]
Neutralized or quaternized product of “amine compound A”).

In the above general formula [Chemical Formula 2], R ¹ and R
^{As 2} , for example, a methyl group, an ethyl group, a hydroxyethyl group, a hydroxypropyl group, and as R ³ and R ⁶ , for example, an ethylene group, a propylene group, a butylene group,
R ⁴ includes, for example, a tetradecyl group, an octadecyl group, a hydroxyoctadecyl group, -COR ⁵ and -CO
Examples of R ⁷ include octadecanoyl, hydroxyoctadecanoyl, and hardened tallow fatty acid residue. Examples of the amine compound A include N ', N'-dimethyl-N-octadecyl-propanediamine acyl compound, N', N'-dimethyl-N-aminopropylpropanediamine acyl compound, N ', N'-diethyl -N
An acyl compound of octadecyl-propanediamine,
N ', N'-diethyl-N-hydroxyoctadecylpropanediamine acyl compound, N', N'-diethyl-N-aminopropylpropanediamine acyl compound, N ', N'-dimethyl-N-octadecyl-ethanediamine N ′, N′-dimethyl-N—
Acyl compound of aminopropylethanediamine, N ′,
An acyl compound of N′-diethyl-N-octadecyl-ethanediamine, an acyl compound of N ′, N′-diethyl-N-aminopropylethanediamine, and the like are exemplified.

To prepare the amine compound A,
N ', N'-dimethyl-N-octadecyl-propanediamine, N', N'-dimethyl-N-aminopropyl-
Propanediamine and the like can be easily obtained by a known method such as acylation with a fatty acid or an ester thereof. Fatty acids or esters thereof that can be used in this reaction are generally derived from natural fats and oils such as coconut oil, palm oil, tallow, lard, rapeseed oil, fish oil, etc. A compound synthesized may be used.

The neutralized product (acid neutralized product) or quaternized product of the amine compound A, which is an essential component of the present invention, is a compound obtained by reacting the amine compound A with an acid or a quaternizing agent. The acid includes inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid, acetic acid, lactic acid, glycolic acid, citric acid,
Organic acids such as maleic acid, fumaric acid, and toluenesulfonic acid are exemplified. Examples of the quaternizing agent include alkyl halogen compounds such as methyl chloride and alkyl sulfate compounds such as dimethyl sulfate.

The neutralized product of the amine compound A can be prepared by, for example, slowly adding a melt or a concentrated solution of the amine compound A to an aqueous solution containing the acid under stirring or shear mixing. However, the present invention is not limited to this method, and a neutralized product may be prepared in advance, or a neutralized product may be added later. Further, to prepare the quaternized product of the amine compound A, for example,
A method is generally used to obtain the melt or the concentrate of the amine compound A by slowly adding the melt or the concentrate of the quaternizing agent under stirring or shear mixing, but the method is not limited to this method.

The content of the neutralized product (acid neutralized product) or quaternized product of the amine compound A in the liquid soft finish of the present invention is usually 4 to 40% by weight based on the whole liquid soft finish. , Preferably 6 to 30% by weight, particularly preferably 10 to 30% by weight.
30% by weight. If the content is less than 4% by weight, storage stability as a product may be impaired (separated), and
If the content exceeds% by weight, the viscosity becomes high, and dispersion in water becomes difficult, which is not preferable.

To prepare the liquid softener of the present invention,
It can be easily obtained by dispersing the neutralized or quaternized product of the amine compound A and other additives used as necessary in water or the like. In the liquid softener of the present invention, in addition to the neutralized product or quaternized product of the amine compound A, if necessary, further modified with dimethylpolysiloxane and partially an amino group or a polyoxyalkylene group. Other additives such as silicone compounds such as dimethylpolysiloxane,
Particularly preferably, by blending dimethylpolysiloxane partially modified with a polyoxyalkylene group, it is possible to improve the feel of soft-treated clothing without impairing water absorption. These silicone compounds are preferably compounded in an amount of 0.3 to 5% by weight based on the neutralized product or quaternized product of the amine compound A.

For adjusting the viscosity, an inorganic electrolyte such as sodium chloride, calcium chloride or magnesium chloride may be added in an amount of 0.05 to 0.4% by weight based on the whole liquid softener.

Although the liquid softener of the present invention has high stability for long-term storage, it is preferable to use polyoxyethylene (5 to 50 mol) alkyl or alkenyl for stabilization under severe storage conditions. Surfactants such as (C12-C24) ether, polyoxypropylene (5-50 mol) alkyl or alkenyl (C12-C24) ether, ethanol, propylene glycol, ethylene glycol, glycerin, etc. A solvent or urea may be blended. Further, known esters, nonionic or cationic compounds, long-chain alcohols, long-chain amines, long-chain fatty acids and the like may be used in combination as a soft base.
In addition, pigments or dyes can be incorporated for the appearance of the product, optical brighteners for the whiteness of the finish, and fragrances to enhance the taste at the time of use and after the finish.

[0020]

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

[0021]

Examples 1 to 25 and Comparative Examples 1 and 2 An amine compound A having R ^{1 to} R ⁷ shown in Tables 1 and 2 was converted to an acid or 4 shown in Tables 1 and 2 Using a neutralized or quaternized product of the amine compound A neutralized or quaternized with a grading agent, the following flexibility and elasticity were evaluated.

[0022]

[Table 1]

[0023]

[Table 2]

1) Evaluation of flexibility and elasticity (1) Treatment method 3.5 kg of commercially available cotton towel 2 kg and acrylic jersey 1 kg
Washing was repeated 5 times (30 liters washing machine) using 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. 1.5 g of the liquid softener having the composition shown 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 indoors, and then dried at 25 ° C and 65 ° C.
% RH for 24 hours in a constant temperature and humidity chamber. Next, evaluation of the flexibility and elasticity of the obtained cloth was performed by comparing one pair of cloths treated with 10 cc of a soft finish containing 15% by weight of dihydrogenated tallow alkyldimethylammonium chloride as a control. The evaluation is expressed as follows. The results are shown in [Table 3]. +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; control Is soft or less elastic than control

[0026]

[Table 3]

As shown in [Table 3], it was found that the use of the compound of the present invention provides an effect of satisfying both flexibility and elasticity.

Further, in order to evaluate the elasticity of the liquid soft finish having the composition shown in Table 4, the pile height of cotton towels was measured. <Evaluation of elasticity> Cotton towels treated in the same manner as in the treatment method of the example were folded in eight, three sheets were piled up, and 5 g / cm.
After pressurizing with the pressure of ² for 5 minutes, the pressure was removed and the height of the towel was measured. Table 4 shows the results. The higher the height of the towel, the better the elasticity.

[0029]

[Table 4]

[0030]

According to the present invention, the liquid softness which is excellent in the softening effect, the elasticity of the treated garment is good and the texture is not impaired, and the dispersibility in water and the storage stability are excellent. A finish is provided. The soft finish of the present invention can impart sufficient flexibility and antistatic properties to various fibers, and can impart excellent elasticity to the various fibers. It has a softening effect equal to or higher than that of hardened tallow alkyldimethylammonium chloride, and surprisingly gives elastic softness.

Claims (1)

(57) [Claims] 1. A liquid softener comprising, as an essential component, a neutralized product or a quaternized product of a compound represented by the following general formula [1]. Embedded image