JPH0726325B2 - Softening agent - Google Patents

Description

TECHNICAL FIELD The present invention relates to a softening finish, and more specifically, a liquid softening finish that can impart excellent flexibility and elasticity (puffiness) to various fibers. It is about.

[Problems to be Solved by Prior Art and Invention]

Currently, most of the commercially available products as household softening agents are quaternary ammonium salts having two long-chain alkyl groups per minute as represented by di (hardened tallow alkyl) dimethylammonium chloride. It is a composition containing the main component. The reason for this is that a small amount of quaternary ammonium salt has a good softening effect on various fibers.

However, although the above quaternary ammonium salt has a remarkable softening effect on cotton, it is hard to say that it is sufficiently effective on synthetic fibers such as acrylic, polyester and polyamide fibers. However, if the treatment is performed at a higher concentration, the elasticity of the clothing may be deteriorated and the texture may be impaired.

Furthermore, since the quaternary ammonium salt has a strong hydrophobicity, when it is poured into the rinse water when the stirring force is weak, the dispersibility in water is poor, and therefore the clothing may be uneven. Further, particularly when it is stored for a long period of time at a low temperature, it may thicken, form a gel, or separate.
Commercially available softeners are blended with other additives such as polyoxyethylene-based nonionic surfactants other than the above quaternary ammonium salt, electrolytes and solvents to improve dispersibility in water and long-term storage stability. However, the effect is still insufficient.

Further, conventionally, liquid softening finishes having various amines as softening bases have been known. For example, JP-A-52-59796 discloses a composition for imparting flexibility to a fiber containing a long-chain alkylamine such as methyldi (effect tallow alkyl) amine, and JP-A-58-6070 discloses a composition. A fiber material finishing agent which imparts smoothness and comfortable feel to a fiber containing an acylated alkanolamine, a water-soluble quaternary ammonium salt and a fatty acid ester is disclosed in JP-A-61-167083. A softening agent having a good dispersibility containing a condensation reaction product of a higher fatty acid and a hydroxy lower alkyl polyamine and an alkyl amine polyglycol ether is disclosed in JP-A-61-275474, which is a di (higher alkyl) cyclic amine and Bronsted. A stable aqueous dispersion for treating textiles containing an acid is disclosed in JP-A-64-85368 in which a dilong-chain alkylamine-anionic surfactant ion-pair complex, non-synthetic. A softening composition containing silicone wax and a liquid carrier is disclosed in JP-A-2-6662 in which a fabric conditioning composition containing an amine such as a condensate of hydroxy lower alkylalkylene diamine and a higher fatty acid and an amphoteric fabric conditioning agent is disclosed. Kahei 2-14076 describes a fabric conditioning composition containing a dilong-chain alkylamine-polyfunctional carboxylic acid complex, which imparts flexibility and antistatic properties.

Further, JP-A-52-5394 describes a fabric condition-controlling composition containing a mono- or di-long-chain alkylalkylenediamine static inhibitor and a quaternary ammonium softener.

However, the softening agents containing these amines are relatively better in dispersibility and storage stability than the softening agents containing the quaternary ammonium salt, but the softening performance is still insufficient.

[Means for Solving the Problems]

As a result of earnest research on a softener containing an amine, the present inventors have found that a neutralized product or a quaternized product of a special (di-long-chain) amine compound has excellent flexibility and has elasticity (puffiness) to clothes. ), And the present invention has been completed.

That is, the present invention is an aqueous flexible finish containing a neutralized product or a quaternized product of an inorganic acid or an organic acid having 1 to 6 carbon atoms of a compound represented by the following general formula (A) as a flexible base. Is provided.

[In the formula, R ¹ and R ² represent an alkyl group or an alkenyl group R ³ : H having 12 to 22 carbon atoms, a methyl group or a hydroxyethyl group m: 1 to 2; The tertiary amine compound (A) which is a precursor of the soft base of the present invention can be obtained by the following method.

1) When m = 2 N-long-chain alkyl or alkenyl monoamine or N, N-
It can be obtained by the reaction of long-chain alkyl or alkenylmethyl monoamine with acrylic acid. A compound in which R ³ is hydroxyethyl can be obtained by adding ethylene oxide to the reaction product of N-long chain alkyl or alkenyl monoamine and acrylic acid.

2) When m = 1 Reaction of the corresponding long-chain alkyl or alkenylamine with chloroacetic acid or chloroacetic acid ester, N-long-chain alkyl or alkenyl diethanolamine dehydration cyclization product (B) and long-chain alkyl or alkenyl It can be obtained by reaction with an amine.

The tertiary amine compound (A) used in the present invention is preferably a compound in which R ³ in the general formula (A) is H or a hydroxyethyl group.

Examples of the acid for obtaining the neutralized product of the present invention from the compound (A) include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid, and carbon atoms of 6 such as acetic acid, lactic acid, glycolic acid, citric acid and maleic acid.
The following organic acids are mentioned, but hydrochloric acid is the cheapest and has the highest performance. In the neutralization step, the compound (A) previously neutralized may be dispersed in water, or the compound (A) may be added in a liquid or solid state to the aqueous acid solution. Of course, the compound (A) and the acid component may be added at the same time.

The quaternary compound of the compound represented by the general formula (A) can be obtained by a known method using methyl chloride, dialkyl sulfuric acid or the like.

Considering the viscosity and handling property of the product when commercializing a softening finish containing the compound of the present invention as an essential component, the total amount of the compound of the present invention is 4 to 40% by weight, preferably 6 to 30% by weight, particularly It is preferably 10 to 30% by weight.

The softening agent of the present invention further comprises dimethylpolysiloxane,
A silicone compound such as dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group, and particularly preferably a dimethylpolysiloxane partially modified with a polyoxyalkylene group is blended without impairing water absorption performance. The texture of softly treated clothing can be improved. These silicone compounds are preferably added in an amount of 0.3 to 5% by weight based on the total amount of the compounds according to the present invention.

The softening agent of the present invention has almost the same softening effect as compared with the conventionally widely used di-hardened beef tallow alkyldimethylammonium chloride, but it was surprisingly found that elastic softness is obtained. .

When the composition of the present invention is used as an aqueous liquid softening agent, it is desirable to add 0.05 to 0.4% by weight of an inorganic electrolyte such as sodium chloride, calcium chloride or magnesium chloride in order to adjust the viscosity.

The softening agent of the present invention has high stability for long-term storage, but for further stabilization under severe storage conditions, polyoxyethylene (5 to 50 mol) alkyl or alkenyl (C
_12-24 ) A nonionic surfactant such as ether, ethanol, isopropanol, a solvent such as propylene glycol or ethylene glycol, or urea can be added. Also, known esters, nonionic or cationic compounds, long-chain alcohols and the like may be used in combination as a soft base.

It is also possible to incorporate pigments or dyes for the appearance of the product, fluorescent brighteners for the whiteness of the finish, and fragrances for a good taste when used and after the finish.

〔The invention's effect〕

The softening agent of the present invention can impart sufficient flexibility and antistatic properties to various fibers and impart 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 compounds used in Examples and Comparative Examples are shown below.

Examples 1 to 12 The compositions having the formulations shown in Table 2 were evaluated for flexibility and elasticity by the following methods.

<Evaluation of flexibility and elasticity> (1) Treatment method Commercially available cotton towel 2kg, acrylic jersey 1kg 3.5D
After washing with a commercially available detergent attack (Kao Co., Ltd., registered trademark) 5 times repeatedly with H hard water (30 washing machines) to remove the fiber treatment agent attached to each fiber, the compounding composition of Table 2 is effective. 1.5 g was added as a component and treated at 25 ° C. for 1 minute under stirring.

In each case, 1% by weight of polyoxyethylene-modified dimethylpolysiloxane was added to the total amount of the compound of the present invention.

(2) Evaluation method The cloth treated by the above method was air-dried indoors and then left in a constant temperature and humidity room at 25 ° C and 65% RH for 24 hours.

The softness and elasticity of these cloths were evaluated.

The softness and elasticity of the softener consisted of 15% by weight of dihydrogenated tallow alkyldimethylammonium chloride.
A pair of comparisons was made using the 10 cc treated fabric as a control. The evaluation is expressed as follows.

+2; softer or more elastic than the control +1; slightly softer or more elastic than the control 0; same as the control -1; slightly softer than the control or slightly less elastic than the control -2; softer or the control Less Elasticity As shown in Table 2, by using the compound of the present invention, the effect of satisfying both flexibility and elasticity can be obtained.

Examples 13 to 15 and Comparative Examples 3 and 4 In order to evaluate the elasticity of the compositions having the formulations shown in Table 3, the piled height of cotton towels was measured.

<Evaluation of Elasticity> The cotton towels treated in the same manner as in Examples 1 to 12 were folded in eight, and three sheets were piled up and piled up, and after applying a pressure of 5 g / cm ² for 5 minutes, the pressure was removed and the towel height was increased. Was measured. The higher the towel height, the better the elasticity.

Claims (2)

[Claims] 1. An aqueous flexible finish containing a neutralized product or a quaternized product of an inorganic acid or an organic acid having 1 to 6 carbon atoms of a compound represented by the following general formula (A) as a flexible base. [In the formula, R ¹ and R ² represent an alkyl group or an alkenyl group R ³ : H having 12 to 22 carbon atoms, a methyl group or a hydroxyethyl group m: 1 to 2; ] 2. The aqueous softening agent according to claim 1, which contains, as a softening base, a neutralized product of an inorganic acid of a compound in which R ³ in the general formula (A) is H or a hydroxyethyl group.