JPS59144680A - Softener composition - 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 The present invention relates to a softener composition for imparting flexibility to fibers, clothing, hair, etc., and provides a composition with excellent antibacterial properties and little change in viscosity.

Generally, fabric softeners used to impart softness to clothing, etc. are mainly composed of quaternary ammonium salts that are poorly soluble in water, such as di-long-chain alkyl di-short-chain alkyl quaternary ammonium salts, and are dispersed in an aqueous medium. It is used in However, although cationic surfactants are generally said to have bactericidal properties, the quaternary ammonium salts are water-soluble quaternary ammonium salts such as mono-long-chain alkyl tri-short-chain alkyl quaternary ammonium salts and benzalkonium chloride. Unlike ammonium salts, it has a weak bactericidal power, so if its aqueous dispersion is left at high temperatures for a long period of time, bacteria will grow, which is undesirable from a sanitary standpoint. This phenomenon is thought to be due to bacteria entering the system together with water used in the aqueous dispersion, nonionic surfactants, hydrotropes, and other arbitrary additives, and propagating over time.

Therefore, when manufacturing a softener composition, the water used and each m
Raw materials are sterilized by ultraviolet rays, heat sterilized, or a large amount of urea is added to control bacteria.

However, ultraviolet sterilization is not necessarily effective, and heat sterilization is not preferred because it involves deterioration of the raw material.

In comparison, if 3 or more urea is added, the growth of bacteria can be suppressed, but the disadvantage is that the dispersion stability of the cationic surfactant decreases because the urea decomposes over time and becomes alkaline.

On the other hand, sodium dehydroacetate, P-cresol.

It is also known to add general-purpose antibacterial agents (antibacterial and antifungal agents) such as benzalkonium JJU and triazine compounds, but it is said that the addition of these agents significantly reduces the viscosity of the aqueous softener composition. This causes drawbacks and requires the addition of a thickener or the like to restore the original viscosity.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an aqueous softener composition that overcomes the above-mentioned drawbacks, exhibits little change in viscosity, and has antibacterial activity. The purpose of this is to add a propanediol-based antibacterial agent among the many antibacterial agents to an aqueous dispersion of a water-soluble quaternary ammonium salt type cationic surfactant. This was achieved based on the knowledge that the antibacterial effect is exerted.In other words, the present invention is characterized by containing a water-soluble quaternary ammonium salt type cationic surfactant and a propanediol-based antibacterial agent. This is a fabric softener composition.

As the water-soluble quaternary ammonium salt type cationic surfactant in the present invention, for example, a quaternary ammonium salt having at least two alkyl groups or alkenyl groups having 8 to 26 carbon atoms in the molecule is used. Among these, quaternary ammonium salts having two alkyl groups or alkenyl groups having 10 to 24 carbon atoms in the molecule are preferred, such as ammonium salts and amide ammonium salts represented by the following general formulas (1) and (n). , imidazolinium salts.

(In formula 1.II, Itl and 几2 each have 10 to 10 carbon atoms.
24 alkyl group, hydroxyalkyl group or alkenyl group, & are each an alkyl group having 1 to 3 carbon atoms, hydroxyalkyl group or benzyl group (C2II
40) ts 1. -1 A group represented by (As-1 to 5), Yl and YZt are each an ethylene group or a propylene group, Ll and A2 are numbers of 0 or 1, and X is a nitrogen or a monoalkyl sulfate having 1 to 3 carbon atoms. 0 representing a group) Specifically, dilauryl dimethyl ammonium chloride, dipalmityl methyl hydroxyethylammonicum methyl sulfate, dihydrogenated beef tallow alkyl dimethyl ammonium chloride, distearyl methyl polyoxyethylene (average degree of polymerization 5 mol) Ammonium chloride, dihydrogenated tallow alkyl ethylbenzylammonium, muchloride, ditetracosyldimethylammonium chloride, di[(2-dodecanoylamino)ethyl]
Dimethylammonium chloride, di[(2-octadecanoylamino)propyl]dimethylammonium methyl sulfate, 2-heptadecyl-1-ethyl-1-
(('2-octadecanoylamino)ethyl]imidazolinium ethyl sulfate, 2-pentadecyl-1-
Methyl-1-sa[(2-hequinadecanoylamino)ethyl]imidazolinium methyl sulfate, etc., or a mixture of two or more thereof. The content is 1% (hereinafter referred to as % by weight), preferably 2 to 15%.

In addition, the water-soluble quaternary ammonium salt is dispersed in an aqueous softener composition by a known dispersion method, with an average particle size of 5 μm or less,
It is preferable that the particles be dispersed as fine particles of 2 μm or less.

The propanediol-based antibacterial agent in the present invention is a derivative having propanediol as a basic skeleton.
Chloro 2-nitropropane-1,3-diol, 2-
7' lomo 2-nitrobroban-1,3-diol,
1m of 1,2-propanediol sodium borate etc.
Or a mixture of two or more. Among these, 2-furomo-2-nitropropane-1,3 has particularly excellent antibacterial properties.
-diols are preferred and are readily available under the trade names Pronopol, Sambac 8nin, etc. These propanediol-based antibacterial agents exhibit extremely excellent antibacterial properties when added in small amounts to aqueous dispersions of ice-releasing quaternary ammonium salt type cationic surfactants. Moreover, it is compatible with many general-purpose antibacterial agents such as sodium dehydroacetate, and has the characteristic that the viscosity of the aqueous dispersion before and after the addition of the antibacterial agent is extremely small.

The amount added to the aqueous dispersion is from 0.00 to 1.0, preferably from 0.002 to 0.2.

In order to keep the absolute value of viscosity within a desired range, the aqueous softener composition of the present invention contains inorganic viscosity reducing agents such as K, sodium chloride, and calcium chloride, and organic viscosity reducing agents such as nonionic surfactants. Can be added. Of these, polyoxyethylene type nonionic surfactants are preferred from the viewpoint of storage stability, such as polyoxyethylene (p-5 to
60) 0.05 to 2% of alkyl #(C8-20) ether, polyoxyethylene (P-5-60) alkyl (C6-20) phenyl ether, etc. can be added. Further, other additional components may be optionally added in order to impart an aesthetic appearance and to impart properties for conditioning hair and the like. Such ingredients include pigments, dyes, smectite clay, higher alcohols, and
These include J-mer emulsions, silicones, fluorescent brighteners, etc., which are usually added in an amount of less than 1 liter.In addition, lower alcohols (ethanol) are used as freezing point depressants for aqueous dispersions.

It is also possible to add isopropanol #) or glycols (ethylene glycol, propylene glycol, etc.).

As described above, the antibacterial agent of the present invention not only has excellent antibacterial properties, but its addition hardly changes the viscosity of an aqueous dispersion of a water-soluble quaternary ammonium salt-cut cationic surfactant. There is no need to add a thickening agent such as a polymer to compensate for this, which has a great advantage.The present invention will now be described in detail with reference to Examples.

Example 1 Dicured beef tallow alkyldimethylammonium chloride 4
．． 5%, polyoxyethylene (1)-40) nonylphenyl ether 0.5%, ethylene y +) co-#3
%.

Aqueous dispersions containing 0 to 5% of various antibacterial agents and the remainder water were prepared by the following method, and their viscosity and antibacterial properties were measured. The results are shown in Table-1.

0 Preparation method of aqueous dispersion Components other than di-cured beef tallow alkyldimethylammonium chloride were dissolved in water at 45°C, and the molten mixture of the quaternary ammonium salt was added dropwise with stirring to uniformly disperse the mixture. It was then cooled to room temperature.

0 viscosity measurement After adjustment, the viscosity was measured after being left at 25°C for one day using Brookfield type viscosity B.

Aqueous dispersion of bacteria of the Domonas family (Domonas, Sepatia) left at 25°C for 1 day after adjusting the anti-freeze temperature.
lo' cell, inoculated to a concentration of 6, and
The number of viable bacteria after 14 and 30 days of storage at
A9) was measured.

Table 1 *1 Use of hydrochloride As is clear from the results in Table 1, the product of the present invention has excellent antibacterial properties, and the viscosity is almost the same as that without the addition of a secondary antibacterial agent, which substantially reduces the viscosity of the system. It can be seen that it has the lF'j characteristic that it does not change.

Example 2 2-hepfyl-1-methyl-1- was used in place of the di-hardened beef tallow alkyldimethylammonium chloride in Example 1.
An experiment similar to Example 1 was conducted except that ((2-octadecanoylamino)ethyl]imidazolinium methyl sulfate was used.

The results are shown in Shishi-2.0 Table-2 *1 Amended procedure for use of hydrochloride (method) % formula % 1. Indication of case Patent application No. 17108 of 1988 2
, Title of the invention Softener composition 3, Relationship with the case of the person making the amendment Patent applicant No. 3-7 Honjo-chome, Sumida-ku, Tokyo (676>) Lion Corporation Representative Atsushi Kobayashi 4 Agent 130 Tokyo Honjo-chome-3-7-5, Sumida-ku, Tokyo Date of amendment order: May 11, 1982 (Shipping date: May 1988)
(Monday 4-1) 6. Engrave the entire text of the specification to be amended (no change in content) 7. Copy of attached sheet containing the contents of the amendment

Claims (1)

[Scope of Claims] 1. Softener composition 0 characterized by containing a sparingly water-soluble quaternary ammonium salt scale cationic surfactant and a propanediol-based antibacterial agent 2. Water-soluble quaternary ammonium salt The composition according to claim 1g4, wherein the cationic surfactant is a quaternary ammonium salt having two alkyl or alkenyl groups having 12 to 24 carbon atoms in the molecule. 3. Propanediol antibacterial agent is 2-chloro-2-
Nitropropane-1,3-diol. A composition according to claim 1, which is selected from the group of 2-bromo-2-nitrogloban-1,3-diol and mixtures thereof. 4. Patent lI in which the content of water @ soluble quaternary ammonium salt type cationic surfactant is 0.1 to 50% by weight and the content of propanediol antibacterial agent is 0.001 to i:i amount
The composition according to item 1 of the desired range.