JP2763654B2 - Liquid soft finish - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a softening agent, and more particularly to a domestic liquid softening agent capable of imparting excellent flexibility and elasticity (fluffiness) to various fibers. It relates to a finish.

[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.

The above-mentioned softening agents based on quaternary ammonium salts are usually marketed and used as 4 to 20% dispersions.

Since the quaternary ammonium salt has a strong hydrophobicity, when it is poured into rinse water, if the stirring power is weak, the quaternary ammonium salt is poorly dispersible in water, and may be uneven to clothing.
Commercially available softeners incorporate various additives in addition to the quaternary ammonium salts described above to improve the dispersibility in water, but their effects are still insufficient.

In addition, conventionally, liquid soft finishes using various amines as soft bases are known. For example, JP-A-52-59796 discloses a composition for imparting flexibility to a fiber containing a long-chain alkylamine such as methyldi (hardened tallowalkyl) amine. Japanese Unexamined Patent Publication (Kokai) No. Sho 61-167083 discloses a quaternary ammonium compound, which is a fiber material finishing agent for imparting smoothness and a comfortable touch to fibers containing an acylated alkanolamine, a water-soluble quaternary ammonium salt and a fatty acid ester. A softener having good dispersibility containing a condensation reaction product of a higher fatty acid and a hydroxy lower alkyl polyamine and an alkylamine polyglycol ether,
JP-A-61-275474 discloses a stable aqueous dispersion for treating textiles containing a di (higher alkyl) cyclic amine and Bronsted acid, and JP-A-64-85368 discloses a di-long chain alkyl. An amine-anionic surfactant ion-pair complex,
A softening composition comprising a non-silicone wax and a liquid carrier,
JP-A-2-6662 discloses a fabric conditioning composition containing an amine such as a condensate of a hydroxy lower alkylalkylenediamine and a higher fatty acid and an amphoteric fabric conditioning agent, and JP-A-2-14076 discloses a di-long chain alkyl. Fabric conditioning compositions containing amine-polyfunctional carboxylic acid complexes to impart flexibility and antistatic properties are described.

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

However, the effects of these amine-containing softeners are not yet sufficient.

[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 liquid softening finish characterized by containing the following components (a) and (b) as essential components as a soft base.

(A) amine compounds represented by general formulas (I) to (IV) having one or more amide bonds or ester bonds in the molecule and having two to three long-chain hydrocarbon bonds in the molecule Of 4
One or more grades.

_{^{R 1 NHC 3 H 6 NHCOR 2}} (I) [In the formula, R ¹ is a linear or branched saturated or unsaturated hydrocarbon group having 12 to 24 carbon atoms, and R ² and R ³ are linear or branched saturated or unsaturated, having 11 to 23 carbon atoms. M represents 2 or 3. (B) A neutralized inorganic or organic acid of an amine represented by the general formula (V) and / or (VI).

Wherein R ⁴ and R ⁵ are each a straight-chain or branched-chain hydrocarbon group having 11 to 23 carbon atoms, R ⁶ is a methyl group, an ethyl group, a hydroxyethyl group or a hydroxypropyl group, and n is 2 or 3. Represent. The quaternized amine compound as the component (a) of the present invention can be obtained by a known method, but quaternization with methyl chloride or dialkyl sulfate is the cheapest method. Alternatively, the amine can be obtained by neutralizing an amine with a Bronsted acid such as hydrochloric acid, phosphoric acid, alkylphosphoric acid, and paratoluenesulfonic acid, and then adding an alkylene oxide such as ethylene oxide.

The component (b) of the present invention can also be obtained by a known method. Examples of the neutralizing agent for obtaining the component (b) include inorganic acids such as hydrochloric acid and sulfuric acid, and organic acids such as acetic acid, glycolic acid, lactic acid, citric acid, maleic acid, fumaric acid, and toluenesulfonic acid.

In the present invention, the ratio of component (a) to component (b) is from 90/10 to 10/90, preferably 80/2, by weight ratio of (a) / (b).
The range is from 0 to 20/80, particularly preferably from 80/20 to 40/60.

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 30% 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 0.4.
It is desirable to add by weight.

Silicone compounds such as dimethylpolysiloxane, dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups, particularly preferably partially modified with polyoxyalkylene groups, are added to the liquid soft finish of the present invention. By blending dimethylpolysiloxane, the texture of soft-treated clothing can be improved without impairing water absorption performance. These silicone compounds are preferably incorporated in an amount of 0.3 to 5% by weight based on the total amount of the components (a) and (b).

The softening effect of the liquid softening agent of the present invention is almost the same as the softening agent of component (b) represented by the formulas (II) and (IV), which is widely used in the past, but it is surprising. In particular, it was found that elastic softness was obtained.

In addition, 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, and polyoxyethylene (5 to 50 mol) is used to improve storage stability. A nonionic surfactant such as an alkyl or alkenyl ( _C12-24 ) ether, a solvent such as ethanol, propylene glycol or ethylene glycol, or urea can be blended.

Also, pigments or dyes can be compounded for the appearance of the product, optical brighteners for the whiteness of the finished product, and fragrances can be added to improve the taste at the time of use and after the finished product.

〔The invention's effect〕

The liquid softener of the present invention can impart sufficient flexibility and antistatic properties to various fibers, and can 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.

Tables 1 and 2 show the components (a) and (b) used in the examples and comparative examples.

Examples 1 to 11 and Comparative Example 1 The compositions having the compositions shown in Table 3 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 five times with a commercially available detergent attack (manufactured by Kao Corporation, registered trademark) in DH hard water (30 liter washing machine) to remove the fiber treating agent attached to each fiber, the composition in Table 3 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 12 to 14, Comparative Example 2 In order to evaluate the elasticity of the composition 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 Examples 1 to 13 were folded in eight, three layers were piled up, pressurized at a pressure of 5 g / cm ² for 5 minutes, and the pressure was removed. Was measured. The higher the height of the towel, the better the elasticity.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazumitsu Furuta 2606-6 Akabane, Kaiga-cho, Haga-gun, Tochigi Pref. Dormitory (58) Field surveyed (Int.Cl. ⁶ , DB name) 535 D06M 15/00-15/715

Claims (3)

(57) [Claims] 1. A liquid softening finish comprising the following components (a) and (b) as essential components as essential components: (A) amine compounds represented by general formulas (I) to (IV) having one or more amide bonds or ester bonds in the molecule and having two to three long-chain hydrocarbon bonds in the molecule Of 4
One or more grades. _{^{R 1 NHC 3 H 6 NHCOR 2}} (I) [In the formula, R ¹ is a linear or branched saturated or unsaturated hydrocarbon group having 12 to 24 carbon atoms, and R ² and R ³ are linear or branched saturated or unsaturated, having 11 to 23 carbon atoms. M represents 2 or 3. (B) A neutralized inorganic or organic acid of an amine represented by the general formula (V) and / or (VI). Wherein R ⁴ and R ⁵ are each a straight-chain or branched-chain hydrocarbon group having 11 to 23 carbon atoms, R ⁶ is a methyl group, an ethyl group, a hydroxyethyl group or a hydroxypropyl group, and n is 2 or 3. Represent. ] 2. The composition of claim 1, further comprising 0.3 to 5% by weight of dimethylpolysiloxane and / or dimethylpolysiloxane partially modified with amino groups or polyoxyalkylene groups, based on the total amount of components (a) and (b). A liquid softening finish according to claim 1, wherein 3. A liquid softening finish according to claim 2, wherein the modified dimethylpolysiloxane is a dimethylpolysiloxane partially modified with a polyoxyalkylene group.