JPH10195032A - Modification of viscosity of quaternary ammonium salt aqueous solution and viscosity modifier of the same aqueous solution - Google Patents

Abstract

PROBLEM TO BE SOLVED: To modify viscosity of a quaternary ammonium salt aqueous solution to facilitate handling and uniformly apply quaternary ammonium salt to a substrate requiring insect proof action and antimicrobial action by adding a viscosity modifier such as volatile silicone oil to the quaternary ammonium salt aqueous solution. SOLUTION: A viscosity modifier selected from among volatile silicone oil, methylpolysiloxane, methylhysrodienepolysiloxane, dimethylsiloxane- methylpolyoxyethylenesiloxane copolymer, polyoxypropylene glycol, polypropylene glycol and hydrocarbon is added to an aqueous solution of quaternary ammonium salt such as copolydimethylammonium chloride to modify viscosity of the quaternary ammonium salt aqueous solution. The viscosity modifier is preferably used in an amount of 1-20wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for adjusting the viscosity of a quaternary ammonium salt aqueous solution, a viscosity modifier for the aqueous solution, and an insect repellent and a bactericidal agent treated with a quaternary ammonium salt aqueous solution containing the viscosity modifier. About materials.

[0002]

2. Description of the Related Art Quaternary ammonium salts are known to have excellent softening and bactericidal actions as one of cationic surfactants, and are widely used in the fields of softening agents and disinfecting detergents. . Also, besides this,
As described in JP-A No. 1, it is known that a specific quaternary ammonium salt is effective for controlling house dust mites. And because it strongly adsorbs to fibers, etc.,
In recent years, it has also been used to impart the above effects to textiles such as carpets and curtains.

However, when a textile product, for example, futon, is provided with an anti-mite effect, a quaternary ammonium salt is industrially used as an aqueous solution, but the aqueous solution is generally high in viscosity and is treated with futon. There was a disadvantage that it was difficult to handle.

[0004] Such a problem of an increase in viscosity in an aqueous solution containing a surfactant has been known for some time, and various solutions have been studied.

For example, use of a compound having a high molecular weight polyglycol ether group to reduce the viscosity of a concentrated aqueous liquid of an anionic surfactant (Japanese Patent Application Laid-Open No. 58-118)
No. 899), and a water-soluble salt of a lower polyalkylene ether glycol a and / or a mono- and / or disulfosuccinate of a lower polyalkylene ether glycol is an anionic interface such as an alkyl polyglycol ether sulfosuccinate. To be an effective viscosity modifier for concentrated aqueous solution of activator
No. 36536) is known.

However, the means for adjusting the viscosity of an aqueous solution containing a quaternary ammonium salt has not been sufficiently studied, and the above problems have not been solved.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a means for adjusting the viscosity of a quaternary ammonium salt aqueous solution in order to solve the above problems.

[0008]

Means for Solving the Problems As a result of intensive studies, the present inventor has found that the above-mentioned objects are satisfied by the following means, and has reached the present invention. (1) In a quaternary ammonium salt aqueous solution, selected from volatile silicone oil, methyl polysiloxane, methyl hydrogen polysiloxane, dimethyl siloxane / methyl polyoxyethylene siloxane copolymer, polyoxypropylene glycol, polypropylene glycol, and hydrocarbon A method for adjusting the viscosity of the aqueous solution, which comprises adding a viscosity modifier. (2) A fourth silicone oil selected from volatile silicone oil, methylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane / methylpolyoxyethylenesiloxane copolymer, polyoxypropylene glycol, polypropylene glycol, and hydrocarbon. Viscosity modifier for aqueous solution of quaternary ammonium salt. (3) An insect and antibacterial material obtained by treating a quaternary ammonium salt aqueous solution containing the viscosity modifier described in (2).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, the viscosity of an aqueous quaternary ammonium salt solution can be reduced by the above-mentioned means, and the handling of the aqueous solution on a substrate such as a fiber can be facilitated. . In the present invention, the quaternary ammonium salt is typically a compound represented by the following general formula (1). Formula ^{_{(1) [(CH 3)}} 2 N + R 1 R 2] · X - wherein, _{R 1} and _{R 2} are _C n _H a _{2n + 3-2m} n = _5~20 and m = 0 to 3 , X is C1, Br, CH ₃
SO ₄ and CH ₃ CH ₂ SO ₄ are shown. Examples of these compounds include quaternary ammonium salts such as dicocoyl dimethyl ammonium chloride, dioleyl dimethyl ammonium chloride, dioctyl dimethyl ammonium bromide, and chlorinated hardened tallow alkyl dimethyl ammonium.

In the present invention, the aqueous solution of a quaternary ammonium salt may contain an organic solvent in an amount generally used for producing a quaternary ammonium salt. Is, for example, about 0 to 10% by weight. Examples of the organic solvent include ethyl alcohol, 1,3-butylene glycol, polyethylene glycol, isopropyl alcohol, methyl alcohol, ethylene glycol, propylene glycol, phenoxyethanol, benzyl alcohol, and phenylethyl alcohol.

According to the present invention, in particular, in an aqueous solution containing a quaternary ammonium salt at a concentration at which the viscosity increases, for example, in the case of a dialkyldimethylammonium salt, an aqueous solution having a concentration of about 10 to 30% by weight can effectively reduce the viscosity. Can be reduced. Of course, even in other ranges, the effect of reducing the viscosity of the aqueous solution can be obtained.

Examples of the viscosity modifier of the present invention include volatile silicone oils such as octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, octamethyltrisiloxane, and methylpolysiloxane (having a viscosity of 2 cs or less): methylpolysiloxane (viscosity). Is higher than 2 cs): methyl hydrogen polysiloxane: dimethylsiloxane / methylpolyoxyethylene siloxane copolymer: polyoxyethylene (5) polyoxypropylene (30) glycol, polyoxyethylene (10) polyoxypropylene (30) Glycols such as polyoxypropylene glycol: polypropylene glycol (preferably having a molecular weight of 1,000 or less): liquid paraffin (preferably having an average molecular weight of 300 to 450), and hydrocarbons such as swaran. .

Here, since methylpolysiloxane is a mixture, a volatile silicone oil (having a viscosity of 2 cs or less), which volatilizes easily due to its volatility, is used as a volatile silicone oil. Is described as methylpolysiloxane (viscosity greater than 2 cs). The viscosity modifier of the present invention described above can be used alone or in combination of two or more.
Usually, these may be added to the quaternary ammonium salt aqueous solution in an effective amount, for example, about 1 to 20% by weight.

According to the present invention, in the treatment of a quaternary ammonium salt aqueous solution on fibers such as carpets, curtains and futons and other base materials, the viscosity of the aqueous solution is reduced so that the handling is facilitated. Can be expected to increase. Furthermore, the base material as described above can be imparted with the insect repellent (including acaricidal) and antibacterial (including antibacterial and antifungal) effects of the quaternary ammonium salt.

[0015]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto. Example 1 Dicocoyldimethylammonium chloride 15% by weight aqueous solution (containing 5.0% by weight of 1,3-butylene glycol)
When 6.7% by weight and 10.0% by weight of octamethylcyclotetrasiloxane were added to the solution, the viscosity (Poise / 25 ° C.) of the aqueous solution was measured with a rotational viscometer. The total amount of the aqueous solution was adjusted to 300 g. The results are shown in Table 1.

[0016]

[Table 1]

As described above, when octamethylcyclotetrasiloxane was added, the viscosity of a 15% by weight aqueous solution of dicocoyldimethylammonium chloride was significantly reduced.

Example 2 Dicocoyldimethylammonium chloride 15% by weight aqueous solution (containing 5.0% by weight of 1,3-butylene glycol)
The methylpolysiloxane (viscosity (cs) shown in Table 2
) Were added in an amount of 5% by weight, and the viscosity of the aqueous solution was measured in the same manner as in Example 1. The results are shown in Table 2.

[0019]

[Table 2]

When no methylpolysiloxane was added, the viscosity (Poise / 25 ° C.) of the aqueous solution was 100. Therefore, as described above, an excellent effect of decreasing the viscosity could be obtained by adding 5 to 100 cs of methylpolysiloxane.

EXAMPLE 3 1.5 g of dicocoyldimethylammonium chloride (1,3
-Butylene glycol in an amount of 25%) and the sample substances shown in Table 3 and adjusted to 7.5 g with purified water. After being left for half a day, the adjusted viscosity of each aqueous solution was visually observed. The results are shown in Table 3.

[0022]

[Table 3]

Example 4 1.5 g of didodecyldimethylammonium chloride,
Add the sample material shown in the table and add 7.5 g of purified water.
Was adjusted. After being left for half a day, the adjusted viscosity of each aqueous solution was visually observed. The results are shown in Table 4.

[0024]

[Table 4]

[0025]

According to the present invention, the viscosity of an aqueous solution of a quaternary ammonium salt can be reduced by adding a viscosity modifier selected from specific substances to the aqueous solution of the quaternary ammonium salt, and the handling thereof can be facilitated. As a result, the aqueous solution can be efficiently treated on a substrate such as a fiber, and the productivity can be expected to be improved. Further, the quaternary ammonium salt can be uniformly imparted to a substrate that requires insect repellent and fungicidal action.

Claims (3)

[Claims] 1. A quaternary ammonium salt aqueous solution containing volatile silicone oil, methylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane / methylpolyoxyethylenesiloxane copolymer, polyoxypropylene glycol, polypropylene glycol, hydrocarbon A method for adjusting the viscosity of the aqueous solution, comprising adding a viscosity modifier selected from the group consisting of: 2. It is selected from volatile silicone oil, methyl polysiloxane, methyl hydrogen polysiloxane, dimethyl siloxane / methyl polyoxyethylene siloxane copolymer, polyoxypropylene glycol, polypropylene glycol, and hydrocarbon. Viscosity modifier for quaternary ammonium salt aqueous solution. 3. An insect repellent and an antibacterial material obtained by treating an aqueous solution of a quaternary ammonium salt containing the viscosity modifier according to claim 2.