JPH04108178A - Softening finish - Google Patents

Abstract

PURPOSE:To provide the title finish capable of imparting various kinds of textiles with excellent flexibility, antistatic nature and elasticity, containing an inorganic or 1-6C organic acid-neutralized or quaternarized product of a specific (di-long chain type) tertiary amine. CONSTITUTION:The objective water-based finish with excellent storage stability for a long period of time, containing, as softening base material, 4-40wt.% of an inorganic or l-6C organic acid (pref. hydrochloric acid)-neutralized or quaternarized product of a tertiary amine compound of the formula (R<1> and R<2> are each 11-22C alkyl or alkenyl; l and m are each 2 or 3; n is 0 or 2). Said compound can be prepared by hydrogenation of a reaction product from (A) a two-chain type long chain alkyl or long chain alkenyl ketone formed by e.g. the decarboxylation of a fatty acid and (B) a hydroxyalkyl group- containing primary amine.

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.

[Question B to be solved by the prior art and the invention] Currently,
Most commercially available household fabric softeners contain quaternary ammonium salts with two long-chain alkyl groups in each molecule, such as di(hardened tallow alkyl)dimethylammonium chloride. It is a composition with

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-mentioned quaternary ammonium salts have a remarkable softening effect on cotton, it is difficult to say that the effect is sufficient on synthetic fibers such as acrylic, polyester, and polyamide. If treated at an even higher concentration, the elasticity of clothing may decrease and the texture may be impaired.

Furthermore, since the quaternary ammonium salt has strong hydrophobicity, if the agitation force is weak when adding it to the rinsing water, the dispersibility in water is poor, and therefore there is a risk that it will be uneven on clothing. In addition, especially when stored for a long time at low temperatures, it may thicken, become gel-like, or separate.

Commercially available softeners contain additives such as polyoxyethylene nonionic surfactants, electrolytes, and solvents in addition to the above-mentioned quaternary ammonium salts to improve dispersibility in water and long-term storage stability. However, the effects are still insufficient.

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. A fiber material finishing agent containing a quaternary ammonium salt and a fatty acid ester that gives smoothness and a comfortable feel to the fibers is disclosed in JP-A-61-16708.
No. 3 discloses a softener 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 for textile treatment containing a di(higher alkyl)cyclic amine and a Brønsted acid was disclosed in JP-A-6
No. 4-85368 discloses a softening composition containing a di-long chain alkylamine anionic surfactant ion pair complex, a non-silicone wax, and a liquid carrier; A fabric conditioning composition containing an amine such as a condensate of a diamine and a higher fatty acid and an amphoteric fabric conditioning agent is disclosed in JP-A-2-14076, a fabric conditioning composition containing a di-long chain alkylamine-polyfunctional carboxylic acid complex. Fabric conditioning compositions have been described that provide antistatic and antistatic properties.

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, although these amine-containing softeners have relatively better dispersibility and storage stability than those containing quaternary ammonium salts, their softening ability is still insufficient.

[Means to solve the problem]

As a result of intensive research into fabric softeners containing amines, the present inventors found that neutralized or quaternized products of special (di-long chain type) amine compounds have excellent flexibility and give elasticity to clothing.
The present inventors have discovered that it is possible to impart a feeling of plumpness to the skin, and have completed the present invention.

That is, the present invention refers to the following general formula (I) [wherein R', R'': an alkyl group or alkenyl group having 11 to 22 carbon atoms, j!, m: 2 or 3 n: 0 to 2]. ] The present invention provides a softening agent containing a neutralized or quaternized product of an inorganic acid or an organic acid having 1 to 6 carbon atoms of the compound represented by the following as a softening base.

The compound represented by the general formula (1) according to the present invention is a reaction product of a two-chain long-chain alkyl or long-chain alkenyl ketone obtained by decarboxylation of a fatty acid or the like and a primary amine having a hydroxyalkyl group. It can be obtained by hydrogenation.

Examples of acids for obtaining the neutralized product of the present invention from the compound represented by general formula (1) include inorganic acids such as hydrochloric acid, nitric acid, and phosphoric acid;
Examples include organic acids having 6 or less carbon atoms such as acetic acid, lactic acid, glycolic acid, citric acid, and maleic acid, but hydrochloric acid is the cheapest and has the highest performance. In addition, in the neutralization step, the compound represented by general formula (I) may be neutralized in advance and dispersed in water, or the compound represented by general formula (1) may be dissolved in liquid or solid form in an acid aqueous solution. You can also put it in the form. Of course, the compound represented by general formula (I) and the acid component may be added at the same time.

Further, a quaternized product of the compound represented by the general formula (I) can be obtained by a known method using methyl chloride, dialkyl sulfuric acid, or the like.

When commercializing a fabric softener that essentially includes the compound according to the present invention, the total amount of the compound according to the present invention is 4 to 40% by weight, preferably 6 to 30% by weight, especially considering the viscosity and handling properties of the product. Preferably it is 10 to 30% by 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 can be maintained without deterioration. 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 compounds related to the present invention.

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 (C
+□, 4) 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.

The compounds used in Examples and Comparative Examples are shown below. ] vinegar.

(2) General formula (B) is shown below.

Examples 1 to 8 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) 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°OH hard water. Laundry (30! Washing machine)
After removing the fiber treatment agent attached to each fiber, 1.5 g of the blended composition shown in Table 2 was added as an active ingredient,
The mixture was treated at 25° C. for 11 minutes under stirring.

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

(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 0; 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 2, which has lower elasticity, by using the compound of the present invention, an effect that satisfies both flexibility and elasticity can be obtained.

table flexibility, elasticity To evaluate the results, we measured the stacking height of cotton towels.

Evaluation of elasticity〉 Cotton towels treated in the same manner as in Examples 1 to 8 were folded into 8 and stacked in 3 layers, and after applying pressure at 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.

Table 3 Evaluation of elasticity (height of stacked towels) Examples 9 to 11, Comparative Examples 3 and 4 Elasticity evaluation of the compositions shown in Table 3 Application representative Kaoru Furuya (3 others) Procedure amendment Written (spontaneous) November 22, 1991

Claims (1)

[Claims] 1 The following general formula (I) ▲ Numerical formulas, chemical formulas, tables, etc. are included ▼ (I) [In the formula, R^1, R^2: an alkyl group or alkenyl group having 11 to 22 carbon atoms 1, m: 2 or 3 n: 0-2. ] A softening agent containing a neutralized or quaternized product of an inorganic acid or an organic acid having 1 to 6 carbon atoms of the compound represented by the above as a softening base.