JPH0247362A - Soft-finishing agent - Google Patents

Abstract

PURPOSE:To obtain an aqueous dispersion capable of imparting various fibers with softness, antistaticity and resilience by mixing a specific quaternary ammonium salt, a specific straight-chain fatty acid or its salt and an ester of a fatty acid and pentaerythritol at specific wt.%. CONSTITUTION:The objective aqueous dispersion is produced by mixing (A) a quaternary ammonium salt having one or two groups selected from 10-24C alkyl, alkenyl and beta-hydroxyalkyl in the molecule, (B) a 8-24C straight-chain saturated or unsaturated fatty acid or its salt and (C) an ester of a 10-24C fatty acid and pentaerythritol at a weight ratio (B/A) of 0.0001-0.4 and (C/A) of 0.01-0.5 and mixing the molten mixture of the above components with water or warm water in amounts to give the dispersion containing 3-25wt.% of A+B+C.

Description

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

[Conventional technology and problems]

Currently, most products commercially available as household softeners are compositions whose main component is a quaternary ammonium salt having one to two long-chain alkyl groups in one 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 decreases and the texture is impaired.

[Means for solving problems]

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 comprises the following components (A), (B) and (C')
(A) Quaternary ammonium salt having one or two alkyl groups, alkenyl groups or β-hydroxyalkyl groups having 10 to 24 carbon atoms in the molecule (B) Straight chain saturated or unsaturated salts having 8 to 24 carbon atoms Fatty acid or its salt (C) Contains an esterified product of a fatty acid having 10 to 24 carbon atoms and pentaerythritol, and (B) 8A) in a weight ratio of 0.0001 to 0.
4, (C) / (A) weight ratio of 0.01 to 0.5,
The present invention relates to a fabric softener characterized in that the total amount of (A), (B) and (C) is 3 to 25% by weight.

The quaternary ammonium salt (A) used in the present invention includes, for example, an alkyl group, an alkenyl group, or a β-hydroxyalkyl group having 10 to 24 carbon atoms represented by the following general formulas (1) to (5). Examples include one or a mixture of two or more of ammonium salts, imidazolinium salts, and amide ammonium salts each having one or two in the molecule.

i) Ammonium salt represented by the following formula (1) or (2) ii) Imidazolinium salt 11 represented by the following formula (3)
1) Amidoammonium salt represented by the following formula (4) or (5) [wherein R11R2, R11 and R7 are each an alkyl group, alkenyl group or β-hydroxyalkyl group having 10 to 24 carbon atoms, and L , L and R5 are each an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms,
Benzyl group or -(C2H4(1)l, -H (however, n
is 1 to 3), m is 2 or 3, and X represents a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms. ] Specifically, dodecyltrimethylammonium chloride, hexadecyldimethylethylammonium bromide, octadecyltrimethylammonium chloride, didodecyldimethylammonium chloride, dihexadecyldimethylammonium chloride, dioctadecyldimethylammonium chloride, hydrogenated tallow alkyl dimethyl chloride Ammonium, dihydrogenated palm oil alkyldimethylammonium chloride, bis(
β-hydroxystearyl) diethylammonium chloride, 2-heptadecyl-1-methyl-1-C(2-
octadecanoylamino)ethyl]imidazolinium methylsulfate, di[(2-dodecanoylamino)ethyl]dimethylammonium methylsulfate, di[(2-dodecanoylamino)ethyl]dimethylammonium methylsulfate,
(2-octadecanoylamino)ethylcomethylethylammonium ethyl sulfate or a mixture of two or more thereof.

Among these, a quaternary ammonium compound represented by formula (1) or (2), particularly formula (1), is preferred.

Examples of linear saturated or unsaturated fatty acids having 8 to 24 carbon atoms or salts thereof (B) used in the present invention include caprylic acid, capric acid, lauric acid, myristic acid, balmitic acid, stearic acid, oleic acid, Elaidic acid, linoleic acid, arachidic acid, behenic acid, erucic acid, liglyceric acid, palm fatty acid, rapeseed fatty acid, beef tallow fatty acid, lard fatty acid, hydrogenated palm fatty acid, hydrogenated rapeseed fatty acid, hydrogenated beef tallow fatty acid, hydrogenated lard fatty acid, and its sodium Examples include salts, potassium salts, ammonium salts, alkanolamine salts, and the like.

The esterified product (C) of pentaerythritol used in the present invention is derived from a linear or branched saturated or unsaturated fatty acid having 10 to 24 carbon atoms and pentaerythritol, or from an oil or fat containing the fatty acid as a constituent fatty acid. monoesters, diesters, mixtures thereof, or mixtures thereof with triesters and tetraesters. When using a mixture of these, it is preferable that the total content of monoester and diester in the mixture is 30% or more by weight fraction. If the content of monoester and diester is less than this, a fabric softener with sufficient flexibility and elasticity imparting properties cannot be obtained. Esterified products of pentaerythritol of the present invention include capric acid, lauric acid, myristic acid, palmitic acid,
Examples include esters of oleic acid, stearic acid, isostearic acid, araxic acid, behenic acid, esters of fatty acids derived from unhardened or hardened beef tallow, lard, palm oil, rapeseed oil, fish oil, etc. A mixture is used.

In the present invention, the above-mentioned quaternary ammonium salt (A)
, fatty acid or its salt (B) and pentaerys+J)-
(C) is used as an essential component, but the mixing weight ratio of (A) component and (B) component (B) /
(A) is 0.0001 to 0.4, preferably 0.001
~0.3, mixing weight ratio of component (A) and component (C) (C
) / (A) is 0.01 to 0.5, preferably 0
．． It is desirable that the range is from 0.05 to 0.4.

Outside this range, the processed fibers may lose their flexibility and elasticity.

In addition, component (A) when the softening agent of the present invention is liquefied.
, (B) and (C) should be 3% by weight or more in terms of flexibility and antistatic effect considering current home usage conditions, and 3% by weight or more in terms of viscosity, storage stability and economic efficiency of the liquid composition. It is 25% by weight or less from the surface.

The fabric softener of the present invention is an aqueous dispersion composition containing the three components (A), (B) and (C) as described above.
In its production, it is desirable to heat and melt and mix the three components (A), (B), and (C), and then stir and mix this with water or hot water. Of course, a solvent such as isopropyl alcohol, ethyl alcohol, or ethylene glycol may be added during this mixing for the purpose of lowering the melting temperature. On the other hand, if components (A), (B), and (C) are heated and melted separately and then stirred and mixed with water or hot water, it is difficult to obtain a good dispersion in water.

As mentioned above, the fabric softener of the present invention contains a quaternary ammonium salt (A), a fatty acid or its salt (B), and an esterified product of pentaerythritol (C) as essential components. In order to improve storage stability and adjust viscosity, polyoxyethylene-added nonionic surfactants, water-soluble salts such as common salt and ammonium chloride, solvents such as propylene glycol and ethylene glycol, or urea are added. It is possible to mix them.

Pigments or dyes may also be included for product appearance, fluorescent brighteners for finished whiteness, and fragrances for use and after finishing.

Moreover, even if other quaternary ammonium salt-based softeners are used in combination, the effects of the present invention will not be adversely affected.

〔Effect of the invention〕

The fabric softener of the present invention exhibits excellent effects of imparting sufficient flexibility and antistatic properties to various fibers, as well as desirable elasticity.

〔Example〕

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

Example 1 <Blend composition> The softening agents used in the test were the above (A), (B), (
This is an in-water dispersion obtained by melt-mixing component C) at 60°C, dropping the mixture into 50°C warm water (water: balance amount) under an appropriate stirring force, and cooling.

<Evaluation of flexibility and elasticity> (1) Processing method 3 kg of commercially available cotton towels were washed 5 times in 3.5° DH hard water using a commercially available detergent Zab (manufactured by Kao Corporation, registered trademark) (301 washing machine). ), and after removing the fiber treatment agent attached to each fiber, 5% dispersion 2 of the blended composition shown in Table 1 was added.
The mixture was stirred at 0 cc at 25° C. for 1 minute.

(2) Evaluation method After drying the cloth treated with the above method indoors, 25℃, 65%
R) It was left in a constant temperature and humidity chamber for 24 hours.

These fabrics were evaluated for flexibility and elasticity.

The softness and elasticity were evaluated using a pair of fabrics treated with 20 cc of a fabric softener containing 5% 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 slightly more elastic than the control As shown in Table 1, where the elasticity is lower, by using the compound of the present invention, an effect that satisfies both flexibility and elasticity can be obtained.

Example 2 A softener composition having the composition shown in Table 2 was obtained, and its flexibility was examined in the same manner as in Example 1, and its elasticity was examined by the towel stacking height test shown below. The results are shown in Table-3.

Blend composition> Quaternary ammonium (A) 4 1% fatty acid or fatty acid salt (B) 0.005% water
Evaluation of Balanced Elasticity〉 Cotton towels treated in the same manner as in Example 1 were folded into 8 and stacked in 3 layers, and after applying pressure for 5 minutes at a pressure of 5 g/cm2, 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 Example 3 In the treatment method of Example 1, the cotton towel was replaced with an acrylic chassis, and the softener of formulation number 9 of Example 2 was used to evaluate flexibility and elasticity.

The flexibility was +1.0 and the elasticity was +1.5.

Claims (1)

[Scope of Claims] 1 The following components (A), (B) and (C) Quaternary ammonium salt (B) A linear saturated or unsaturated fatty acid having 8 to 24 carbon atoms or its salt (C) Containing an esterified product of a fatty acid having 10 to 24 carbon atoms and pentaerythritol, (B)/(A ) is 0.0001 to 0 in weight ratio
．． 4. The weight ratio of (C)/(A) is 0.01 to 0.5, and the total amount of (A), (B), and (C) is 3 to 25% by weight.
A fabric softener characterized by: 2. The fabric softener according to claim 1, wherein the quaternary ammonium salt (A) is a compound represented by the following general formula (1). ▲There are mathematical formulas, chemical formulas, tables, etc.▼・・・・・・・・・
(1) [In the formula, R_1 and R_2 each have 10 to 24 carbon atoms.
is an alkyl group, alkenyl group, or β-hydroxyalkyl group, and R_3 and R_4 are each an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, a benzyl group, or -(C_2H_4O)_n-H (where n is 1 to 3
), and X represents a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms. 3. The softening agent according to claim 1 or 2, wherein the esterified product (C) has a total monoester and diester content of 30% by weight or more. 4. The aqueous dispersion obtained by mixing a molten mixture of components (A), (B) and (C) with water or hot water according to any one of claims 1 to 3. Softening agent.