JPS6050910B2 - Softener composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fabric softener composition that imparts flexibility and antistatic properties to bulky, soft textile products such as knitted fabrics and towels made from cotton or synthetic fibers.

Quaternary ammonium salts having 1 to 3 long-chain alkyl groups in the molecule are known as softener components.

Among them, quaternary ammonium salts having one or two long-chain alkyl groups in the molecule are useful for a variety of uses including household use due to their flexibility imparting effect on noodles. It has been widely used as a drug ingredient. In addition, quaternary ammonium salts with two long-chain alkyl groups in the molecule have even better softening properties compared to quaternary ammonium salts with three long-chain alkyl groups in the molecule. It has been known. Therefore, in general, there is 1 in the molecule.
Alternatively, quaternary ammonium salts having two long-chain alkyl groups have been used as softener components. However, quaternary ammonium salts having one or two long-chain alkyl groups in the molecule have a softening effect on noodles, but they have a softening effect on synthetic fibers such as acrylic fibers and nylon fibers. cannot be said to produce satisfactory effects (see, for example, Japanese Patent Laid-Open Publication No. 53-5279).

Furthermore, when a quaternary ammonium compound is derived, a method is known in which the fabric softening properties of the quaternary ammonium compound are optimized by appropriately selecting the chain length distribution of the alkyl groups in the amine mixture. However, the development of a softener composition that can impart high flexibility and antistatic properties to both noodles and synthetic fibers has not yet been successful. Furthermore, softeners made of a mixture of a specific quaternary ammonium salt having a hydroxyalkyl group and an anionic activator (Japanese Unexamined Patent Publication No. 53-52799) and a mixture of an ether carboxylate and various cationic activators have been used. Softeners (Japanese Unexamined Patent Publication No. 53-38794) have been proposed.

However, although these softeners that combine cationic activators and anionic activators have excellent softening effects on synthetic fibers, their softening effects on noodles are insufficient, and they are still unsatisfactory as household softeners. It cannot be called a thing. The present inventors have overcome the drawbacks of conventional fabric softeners, and have developed a soft fabric that has an excellent softening effect on knitted fabrics made of grains, as well as fabrics made of synthetic fibers, and has excellent antistatic properties. As a result of intensive research to develop a softener, we found that di-long-chain alkyl di-short-chain alkyl ammonium chloride and tri-long-chain alkyl mono-short-chain alkyl ammonium chloride are used together in a specific ratio as a softening agent component. We have discovered that the following can be achieved, and based on this knowledge, we have come to form the present invention. That is, the present invention is based on the general formula (4) (wherein R1 and R2 are linear alkyl groups, β-hydroxyalkyl groups, or alkenyl groups having 16 to 24 carbon atoms, and R3 is a linear alkyl group having 1 to 24 carbon atoms; a lower alkyl group such as the alkyl group of 3, R4 represents a lower alkyl group such as an alkyl group having 1 to 3 carbon atoms, a hydroxyethyl group or a hydroxypropyl group, and X- represents an anion); A quaternary ammonium salt represented by: represents a lower alkyl group such as an alkyl group having 1 to 3 carbon atoms, a hydroxyethyl group or a hydroxypropyl group, and Y- represents an anion); There is provided a softener composition in which the weight ratio of component ) to component (B) is in the range of 95:5 to 50:50.

Examples of the quaternary ammonium salt represented by the general formula (1) used in the present invention include dihexadecyldimethylammonium salt, dihydrogenated tallow alkyldimethylammonium salt, and di(β-hydroxyoctadecyl)dimethylammonium salt. , dihydrogenated tallow alkylmethyl β-hydroxyethylammonium salt, dioctadecenyldimethylammonium salt, ditetracosyldimethylammonium salt, etc., linear alkyl group, β
-hydroxyalkyl or alkenyl group R1 and R
Quaternary ammonium salts of 2 can be mentioned.
These may be used alone or in combination of two or more. Examples of the quaternary ammonium salt represented by the general formula (■) include tridecylmethylammonium salt, trihexadecylmethylammonium salt, trihydrogenated tallow alkylmethylammonium salt, and tri(β
-hydroxyoctadecyl) methyl ammonium salt, trihydrogenated tallow alkyl β-hydroxypropylammonium salt, triotadecenyl methyl ammonium salt,
Examples include quaternary ammonium salts in which R5, R6, and R7 are linear alkyl groups, β-hydroxyalkyl groups, or alkenyl groups, such as tritetracosylmethylammonium salts.

These may be used alone or in combination of two or more. Note that R1 and R2 or R5, R6 and R of the quaternary ammonium salts of general formulas (1) and (■) of the present invention
7 needs to be linear. Until now, it has been known to use a quaternary ammonium salt having a branched alkyl group in place of a straight-chain alkyl group (see JP-A-49-57197). For quaternary ammonium salts with branched alkyl groups,
The objective of the present invention, which is a sufficient softening effect on knitted fabrics, cannot be achieved. In the softener composition of the present invention, particularly preferred No. 1. Combinations of quaternary ammonium salts include dioctadecyldimethylammonium salt and triotadecylmethylammonium salt, dihydrogenated tallow alkyldimethylammonium salt and trihexadecylmethylammonium salt,
Dihexadecylmethyl β-hydroxyethylammonium salt and trihexadecyl β-hydroxyethylammonium salt, dioctadecylmethyl β-hydroxyethylammonium salt and tridodecylmethylammonium salt, di(β-hydroxyoctadecyl)dimethylammonium salt and triota Decenylmethylammonium salt, a combination of dioctadecenyldimethylammonium salt and tri(β-hydroxyoctadecyl)methylammonium salt. In addition, an anion that forms a salt [in general formula (1),
Examples of X- in formula (■) and Y- in general formula (■) include halogen, acetate group, phosphoric acid group, nitric acid group, methyl sulfate, and ethyl sulfate.

Particularly suitable are chlorine ions. In the composition of the present invention, the component (4) represented by the general formula (1) and the general formula (■)
The weight ratio of component (B) expressed as: 95:5 to 50:
It is necessary to mix in the range of 50.

If component (4) is greater than this range, the softening effect and antistatic effect on knitted fabrics made from synthetic fibers and bulky, soft textile products made from synthetic fibers will decrease; If the amount of ingredients increases, the softening effect on knitted fabrics made of noodles will be insufficient, so in either case, a sufficient effect cannot be exerted on all knitted fabrics made of noodles and synthetic fibers. In addition to the two essential components (4) and (B) described above, the composition of the present invention further contains a nonionic surfactant, a stabilizer such as propylene glycol, an inorganic or organic electrolyte, and a coloring agent, as desired. , fluorescent brighteners, fragrances, and other additive ingredients commonly used in household fabric softeners can be included.

Further, a long-chain monoalkyl short-chain trialkylammonium cum salt may be mixed in an amount of 5% by weight or less. Further, when used as a household softener, the amount of the softener active ingredient is adjusted to a range of 3 to 2% by weight based on the total composition, taking into account the effect and dispersibility during use.

In this case, if it is less than 3% by weight, satisfactory results will not be obtained even if it is used after rinsing, and if it exceeds 2% by weight, the composition will gel, which is not desirable as a commercial product. The softener composition of the present invention can be used in exactly the same manner as conventional compositions.

The softener composition of the present invention provides high flexibility and antistatic properties not only to bulky and soft textile products such as knitted fabrics or towels, but also to such textile products made of synthetic fibers. It has an excellent effect of imparting.

Although the reason why the composition of the present invention exhibits such effects has not yet been fully elucidated, the di-long chain quaternary ammonium salt of the present invention and tri-long chain quaternary This is presumed to be due to the unique molecular arrangement of the class ammonium salt. Next, the present invention will be explained in more detail with reference to Examples.

The flexibility and antistatic properties of each example were tested and evaluated as follows.

(1) Test method Commercially available towels, acrylic jersey, and polyester jersey were washed 5 times at 60° C. using a laundry detergent (commercially available) to prepare test cloths.

Next, a fabric softener prepared to a predetermined composition was diluted with tap water at 25°C to give a concentration of 0.067%, and the test cloth was immersed in this at a bath ratio of 3 mm, and stirred for 3 minutes. After air-drying the fabric treated in this way indoors, the fabric for evaluating the softening effect was dried at 25℃ and 65%.
The samples were left under RH conditions for 24 hours, and those for antistatic effect evaluation were left under conditions of 20° C. and 45% RH for 7 full hours for each test. - (2) Evaluation method (a) Softener: The feel of the test cloth before and after treatment was compared and evaluated according to the following criteria.

+5...Very soft +4...Quite soft +3...Soft +2...Slightly soft +1...Slightly soft 0...Same as before treatment (b) Antistatic property: Static Honest The cloth was charged with an applied voltage of 7 K and a target distance of 20 wt using a meter, and the half-life (seconds) of the charged voltage after the voltage was removed was measured.

Example 1 Using dioctadecylmethyl β-hydroxyethylammonium chloride as the component (4) and tridodecylmethylammonium chloride as the component (B), (
Softeners were prepared by changing the mixing ratio of component 4) and component (B).

8. Next, the thus obtained softener was tested for flexibility and antistatic properties on men's towels, acrylic jersey, and polyester jersey.

The results are shown in Table 1. For comparison, the results obtained using a commercially available softener containing 6% by weight of dihydrogenated beef tallow alkyldimethylammonium chloride are also shown.

As is clear from this table, when the mixing ratio of component (4) and component (B) is in the range of 95:5 to 50:50, good softening and antistatic effects are achieved on both noodles and synthetic fibers. However, if the mixing ratio of both is outside this range, the desired effect will not be achieved.

Example 2 Using dihydrogenated beef tallow alkyldimethylammonium chloride or dihexadecyldi(β-hydroxyethyl)ammonium chloride as the prison component, and using trihexadecylmethylammonium salt or trimyristyl β-hydroxyethylammonium salt as the component (B), A fabric softener containing a total of 6% by weight of these active ingredients was prepared.

The fabric softener thus prepared was tested for flexibility and antistatic properties on men's towels, acrylic jersey, and polyester jersey in the same manner as in Example 1.
The results are shown in Table 2 along with the composition of the softener. The results show that the softener of the present invention exhibits excellent softening and antistatic effects on both noodles and synthetic fibers.

Example 3 A combination of distearyldimethylammonium chloride and tristearylmethylammonium chloride, a combination of dipalmityldimethylammonium chloride and tripalmitylmethylammonium chloride, and a combination of diisostearyldimethylammonium chloride and tristearylmethylammonium chloride were used as the prisoner component and component (B). A fabric softener containing a total of 6% by weight of these active ingredients in the same manner as in Example 1 using a combination of isostearylmethylammonium chloride, diisopalmityldimethylammonium chloride and triisopalmitylmethylammonium chloride, respectively. was prepared.

These softeners were tested for flexibility and antistatic properties, and the results are shown in Table 3.

Claims (1)

[Claims] 1(A) General formula▲There are mathematical formulas, chemical formulas, tables, etc.▼・・・・・・(I
) (R_1 and R_2 in the formula have 16 to 24 carbon atoms.
is a straight-chain alkyl group, β-hydroxyalkyl group or alkenyl group, R_3 is a lower alkyl group, R_4 is a lower alkyl group, hydroxyethyl group or hydroxypropyl group, and X^- is an anion). (B) General formula ▲ Numerical formula, chemical formula, table, etc. ▼・・・・・・(II)
(R_5, R_6 and R_7 in the formula have 8 to 2 carbon atoms.
4 represents a linear alkyl group, β-hydroxyalkyl group, or alkenyl group, R_8 represents a lower alkyl group, hydroxyethyl group, or hydroxypropyl group, and Y^- represents an anion). ammonium salt, and the weight ratio of component (A) to component (B) is 95:
Softener compositions ranging from 5 to 50:50. 2. The total amount of component (A) and component (B) is 3 to 2 in the composition.
The softener composition according to claim 1, which has a content of 0% by weight.