JPH04100973A - Soft-finishing agent - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fabric softener, and more specifically, a liquid fabric softener that can impart excellent flexibility and elasticity (fluffiness) to various fibers. It is related to.

[Problems to be solved by conventional techniques and inventions] Currently,
Most products on the market as household fabric softeners are 1
This is a composition whose main component is a quaternary ammonium salt having 1 to 2 long-chain alkyl groups in the molecule. The reason for this is that a small amount of quaternary ammonium salt has a good softening effect on various fibers.

The above-mentioned quaternary ammonium salts have a remarkable softening effect on cotton, but it is difficult to say that the effect is sufficient on synthetic fibers such as acrylic, polyester, and polyamide. When treated at high concentrations, the elasticity of clothing may decrease and the texture may be impaired.

In addition, when storing for a long time, especially at low temperatures, the viscosity may thicken,
It may form a gel or separate.

For this reason, various polyoxyalkylene-based nonionic activators, electrolytes, and solvents are required in addition to the softening component, and although many products are stabilized by blending these, they are still not sufficiently effective.

Furthermore, liquid softeners using various amines as softening bases have been known. For example, JP-A-52-59796
JP-A-58-60070 discloses a composition that imparts flexibility to fibers containing a long-chain alkylamine such as methyldi(hardened tallow alkyl)amine, and JP-A-58-60070 discloses a composition that imparts flexibility to fibers containing a long-chain alkylamine such as methyldi(hardened tallow alkyl)amine. The finishing side of the fiber material that gives smoothness and comfortable touch to the fiber containing quaternary ammonium salt and fatty acid ester is disclosed in Japanese Patent Application Laid-Open No. 61167083.
JP-A No. 61-275474 discloses a softening agent with good dispersibility containing a quaternary ammonium compound, a condensation reaction product of a higher fatty acid and a hydroxy-lower alkyl polyamine, and an alkylamine polyglycol ether; A stable aqueous dispersion containing a (higher alkyl)cyclic amine and a Brønsted acid for treating textiles was disclosed in JP-A-64
85368 discloses a softening composition containing a di-long chain alkylamine anionic surfactant ion pair complex, a non-silicone wax and a liquid carrier, and JP-A-2-6662 discloses a hydroxy lower alkyl alkylene diamine. A fabric conditioning composition containing an amine and an amphoteric fabric conditioning agent, such as a condensate of and a higher fatty acid,
JP-A-2-14076 describes a fabric conditioning composition that imparts flexibility and antistatic properties and contains a di-long-chain alkylamine-polyfunctional carboxylic acid complex.

Further, JP-A-52-5394 describes a fabric conditioning composition containing a mono- or di-long chain alkyl alkylene diamine static electricity suppressant and a quaternary ammonium softener.

However, the effects of softeners containing these amines are still insufficient.

[Means to solve the problem]

As a result of intensive research to solve the above drawbacks, the present inventors found that
This led to the present invention.

That is, the present invention essentially contains the following components (a) and (b), and the molar ratio of component (a) to component (5) is (number of amino groups in component (a) - 1). ×0.8≦
b) component/(a) component ≦ (number of amino groups in component (a) 1) x 1.25, and part of the amino groups in component (a) that cannot be neutralized by component (g)) Or, it consists of an aqueous dispersion of a compound completely neutralized with an inorganic acid or an organic acid having 6 or less carbon atoms, with a total of 4 to 40% by weight of component (a) and component).
The object of the present invention is to provide a fabric softener containing the following.

(a) A polyamine having 2 to 5 amino groups and one saturated or unsaturated alkyl group, alkenyl group, alkanoyl group, or alkenoyl group having 16 to 22 carbon atoms in two molecules of the component.

Component (b): saturated or unsaturated fatty acid having 16 to 22 carbon atoms.

As component (a) of the present invention, N-long chain alkyl (or alkylene) amine is subjected to cyanethylation and reduction reaction from 1 to
N-long chain alkyl (or alkylene) polyamines obtained by repeating the process several times and monoamide compounds that are condensates of polyalkylene polyamines and fatty acids are used.

As component (a), in particular, the following general formula (1) % formula % () [wherein R1 represents a saturated or unsaturated hydrocarbon group having 16 to 22 carbon atoms, and n is 1 to 4, preferably Represents a number from 1 to 2. ] Polyamine compounds represented by these are preferred. In addition, the general formula (
In 1), when n is 3 to 4, the performance is equivalent to the compound where n = 1 to 2, but the process is particularly long for industrial production. If it is -5 or more, the amount of by-products increases, which is practically undesirable.

Examples of the saturated or unsaturated fatty acid having 16 to 22 carbon atoms as component (b) of the present invention include stearic acid, oleic acid, and hydrogenated palm oil fatty acid. It is thought that component (b) forms a type of complex through an acid-base reaction with the nitrogen atom in component (a), becomes hydrophobic, and exhibits a softening effect.

In the present invention, component (a) and component (b) have a molar ratio of component (b)/component (a) (number of amino groups in component (a) - 1) x 0.8≦(b). Component/(a) component≦((a)
It is used so that the number of amino groups in the component - 1) x 1.25. The molar ratio of component (b)/component (a) is ((a)
) The number of amino groups in the component - 1) If it is smaller than x0.8, the hydrophilicity becomes high and the flexibility, especially for synthetic fibers, is insufficient, and (a) the number of amino groups in the component - 1) ×1
．． If it is larger than 25, the positive charge density of the amino group decreases, particularly the adsorption to cotton fibers decreases, resulting in insufficient flexibility.

In addition, as acids other than component (b) of the present invention, inorganic acids such as hydrochloric 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 are used. However, hydrochloric acid is the cheapest and has the highest performance. The preferred blending amount of these acids is a molar ratio of (other acid components)/component (a) of 0.4 or more, particularly preferably 0.7 to 1.0. If the molar ratio is less than 0.4, the dispersibility in water will not be sufficient, and if it exceeds 1.0, the p)I will drop too much,
Storage stability decreases.

When commercializing a fabric softener that requires component (a) and component (b), considering the viscosity and handling properties of the product, the total amount of component (a) and component (0)) should be 4 to 40% by weight.
Preferably 6-30% by weight, particularly preferably 10-30%
Weight%.

The softening agent of the present invention further includes dimethylpolysiloxane,
By incorporating a silicone compound such as dimethylpolysiloxane partially modified with an amino group or a polyoxyalkylene group, particularly preferably a dimethylpolysiloxane partially modified with a polyoxyalkylene group, water absorption performance is not impaired. (The feel of softened clothing can be improved.) These silicone compounds are preferably blended in an amount of 0.3 to 5% by weight based on the total amount of components (a) and (b).

It has been found that the softening agent of the present invention has almost the same softening effect as dihardened tallow alkyldimethylammonium chloride, which has been widely used in the past, but surprisingly provides elastic softness. .

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

The fabric softener of the present invention has high stability during long-term storage, but in order to stabilize it under even more severe storage conditions, polyoxyethylene (5 to 50 mol) alkyl or alkenyl (0
1□-24) A nonionic surfactant such as ether, a solvent such as propylene glycol or ethylene glycol, or urea can be blended. In addition, known esters, nonionic or cationic compounds, long chain alcohols, etc. may be used in combination as flexible bases.

In addition, pigments or dyes can be added to improve the appearance of the product, fluorescent brighteners can be added to improve the whiteness of the finished product, and fragrances can be added to improve the taste during use and after finishing.

〔Effect of the invention〕

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

〔Example〕

Next, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples.

Component (a), component (b), and acid components other than component (b) (hereinafter referred to as component (C)) used in Examples and Comparative Examples are shown below.

Table (a) Composition Table of Components (C) Component Note) 1) Contains 10 to 20% by weight of diamide compound in addition to monoamide.

Table (b) Component Examples 1 to 12 The compositions having the formulations shown in Table 4 were evaluated for flexibility and elasticity by the following methods.

Evaluation of flexibility and elasticity> (1) Processing method: 2 kg of commercially available cotton towels and 1 kg of acrylic chassis were washed 5 times with commercially available detergent Attack (manufactured by Kao Corporation, registered trademark) in 3.5° DH hard water. After washing (301!, washing machine) to remove the fiber treatment agent attached to each fiber, 1.5 g of the active ingredient of the blended composition in Table 4 was added and treated at 25°C for 1 minute with stirring. .

In each case, 1% by weight of polyoxyethylene-modified dimethylpolysiloxane was blended based on the total amount of components (a) and (b).

(2) Evaluation method After drying the cloth treated with the above method indoors at 25°C165
It was left in a constant temperature and humidity room at %RH for 24 hours.

These fabrics were evaluated for flexibility and elasticity.

The softness and elasticity were evaluated using a pair of fabrics treated with 10 cc of a fabric softener containing 15% by weight of dihydrogenated beef tallow alkyldimethylammonium chloride 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 O; same as the control -1; control is slightly softer or slightly less elastic than the control -2; control is soft or the control As shown in Table 4, which has lower elasticity, by using the compound of the present invention, an effect that satisfies both flexibility and elasticity can be obtained.

1) The blending ratios are as follows: Flexibility, Elasticity Examples 13 to 15, Comparative Example 4.5 In order to evaluate the elasticity of the compositions with the formulations shown in Table 5, the stacking heights of cotton towels were measured.

<Evaluation of elasticity> Cotton towels treated in the same manner as in Examples 1 to 12 were folded into 8 and stacked in 3 layers, and after pressurizing at a pressure of 5 g/d for 5 minutes, the pressure was removed and the height of the towel was adjusted. was measured.

The higher the height of the towel, the better the elasticity.

Claims (1)

[Scope of Claims] 1 It essentially contains the following components (a) and (b), and the molar ratio of components (a) and (b) is (number of amino groups in component (a) - 1)×0.8≦(b) component/(a
) component ≦ (number of amino groups in component (a) - 1) x 1.2
5, and consists of an aqueous dispersion of a compound in which part or all of the amino groups of component (a) that cannot be neutralized by component (b) are neutralized with an inorganic acid or an organic acid having 6 or less carbon atoms, a)
A softening agent containing a total of 4 to 40% by weight of component (b) and component (b). Component (a): A polyamine having 2 to 5 amino groups and one saturated or unsaturated alkyl group, alkenyl group, alkanoyl group, or alkenoyl group having 16 to 22 carbon atoms in the molecule. Component (b): saturated or unsaturated fatty acid having 16 to 22 carbon atoms. 2 (a) component has the following general formula (I) R^1NH (C_3H_6NH)_nH (I) [wherein R^1 represents a saturated or unsaturated hydrocarbon group having 16 to 22 carbon atoms, and n is 1 Represents the number ~4. ] The softening agent according to claim 1, which is a polyamine compound represented by: