JPS5986632A - Antibacterial treatment - Google Patents

Abstract

PURPOSE:To obtain a processed product having an antibcaterial activity of excellent durability without any problem of toxicity and any risk of discoloration, by adding a salt to a treatment solution and treating a polymer molding with the treatment solution containing an organosilane having a quat. ammonium salt group. CONSTITUTION:In the treatment of a polymer molding (e.g., fiber, synthetic paper or film of cellulose, polyamide, or the like) with an organosilicone having a quat. ammonium salt group [e.g., a compound of the formula (n=16-20)], organic and/or inorganic salts (e.g., Na2SO4, MgCl2 or propanolamine hydrochloride) are added to the treatment solution. It is possible to obtain efficiently a processed product having an antibacterial activity excellent in durability without detriment to whiteness and hand.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for antibacterial treatment of molecular molded articles, and more particularly to improvements in the processing of organosilicone with quaternary ammonium bases.

Generally, microorganisms such as various molds and bacteria live inside, and fa
It also has harmful effects on FE products and the human body. For example, we have a wide range of decorations ranging from clothing and bedding to Inchiriya products, Efsteriya products, etc. Human juices, food and beverages, etc. adhere to textile products, and the ingredients in these serve as a source of nutrients for mold and bacteria. These microorganisms and the waste discharged from them cause discoloration, embrittlement of the fibers themselves, and the generation of bad odors, which poses serious hygienic problems. In particular, the growth of bacteria attached to the fibers of socks, underwear, casual wear, bed sheets, covers, interior materials for aviation, ships, vehicles, etc.
It goes without saying that its growth and spread are harmful to human health.

Conventionally, organic copper compounds,
Methods of treatment with organocopper compounds, halogenated phenolic compounds, treatment with cationic surfactants containing a quaternary ammonium group, treatment with vinyl polymers having a quaternary ammonium group, etc. are known. There is.

However, when using these known methods, there are problems of toxicity to the human body, pollution problems of treated waste liquid, lack of durability,
The reality is that no satisfactory method is known, since it involves problems such as discoloration due to processing. In particular, cationic polymers that do not contain quaternary ammonium bases are attracting attention because they have fewer problems such as lubricity (for example, Japanese Patent Publication No. 56
-45485). However, these finishing agents not only have shortcomings in durability and texture, but also have the disadvantage of easily deteriorating white skin.

The inventors of the present invention have conducted intensive research into a method for efficiently obtaining processed products that are free from such drawbacks and have excellent durability and antibacterial properties, and as a result, they have arrived at the treatment method of the present invention. That is,
The present invention is characterized by adding organic and/or inorganic salts to the treatment solution when treating a polymer molded article with an organosilicone having a quaternary ammonium base.

When the method of the present invention is used, excellent antibacterial properties are imparted due to the presence of the quaternary ammonium base, and the antibacterial durability is improved and the treatment is effective. In particular, it is a great advantage of the treatment agent J31 that high reaction efficiency can be obtained due to increased affinity for hydrophobic polymers that have low adhesion or reaction efficiency, and this is a major advantage of the treatment agent. It will also be expanded to.

The organosilicone having a quaternary ammonium base used in the present invention includes a tertiary nitrogen-containing group,
For example, an organosilicone having a structure obtained by quaternizing a diorganopolysiloxane having a silxane unit having a dialkyl ff or a converted aminoalkyl group, the general formula % formula % (R: alkoxy group, halogen atom, acyl group, one hydroxyl group) It may be.

R': A divalent hydrocarbon group having 20 or less carbon atoms which may have a substituent, or a divalent hydrocarbon group having 20 or less carbon atoms containing a chain atom or a nitrogen atom. It's okay.

R#: lower alkyl group, 'RI' = number of carbon atoms is 1 to 2
0 alkyl group, alkenyl group, cycloaliphatic hydrocarbon group, aromatic group, aralkyl group or alkaryl group.

A positive integer of ni1 to 3, a Xi anion, such as chlorine atom 1, bromine atom, etc. ) is exemplified. Furthermore, the latter is preferred (however, n: 16~
20) is exemplified. These compounds form a water-resistant film on fibers, and the latter compound in particular reacts with active hydrogen present in polymer molded products to introduce quaternary ammonium cations, making them highly effective against various molds and bacteria. It has antibacterial and bactericidal effects.

- For example, molds such as black mold, blue mold, Aspergillus mold, chaetomium, spider mold d, Escherichia coli, Staphylococcus aureus, Corynebacterium, Durum negative rods,
It exhibits bactericidal and bactericidal effects against many bacteria such as Bacillus 9, Bacillus, and Coccus.

Examples of polymer molded articles to which the present invention applies include natural polymers such as cellulose and protein, semi-synthetic polymers such as cellulose acetate, polyesters, polyamides, polyvinyl alcohols, polyurethanes, polyclars, and polyolefins. Examples include fibers made of synthetic polymers, synthetic papers, films, foams, other molded products, and bonded products thereof. It is particularly effective when applied to fibers. Fibers include loose wool, threads, slivers, knitted fabrics, nonwoven fabrics, rugs, tapes, sewn products, and the like. It may be a composite or mixed product of polymer embossing, non-IIH, Kasuri fiber, etc.

The fibers may be made of not only a single material but also composite materials of various fibers, mixed materials, etc.

The organosilicon used in the present invention, especially the organosilicon represented by the above general formula, can be prepared by dipping, spraying,
It is applied to a polymer molded article by any method such as the pad method, and when the treated molded article has many active groups such as cellulose fibers such as hydroxylose and copper ammonium rayon, the chemical reactivity is high, and the reactivity is 80. Although it is relatively easy to obtain a reaction of 5% or more, the degree of reaction is 5% for other fibers with active groups and less swelling property.
It becomes 0% or less.

If the degree of reactivity is low, not only will the efficiency of using the treatment agent be low, but it will also lead to insufficient durability, increased chemical costs, and problems with waste water.

When using the method of the present invention, the treatment agent is effectively adsorbed to the polymer molded article by adding 1.0% of salt to the treatment solution, and the adsorption efficiency of the treatment agent is improved. Even immersion treatment with a large dilute solution brings about advantages such as excellent utilization efficiency, improved reactivity, and improved durability.

Improvements in durability can also be achieved by pad dry methods, pad steam methods, and the like.

The organic and inorganic double-acting compounds used in the present invention are not particularly limited as long as they are water-soluble, but in particular mono- to trivalent cation halides, sulfuric acid, nitrates, phosphoric acid, carbonic acid, etc. salt, acetate, tartrate, etc. (specifically chloride), sodium sulfate, sodium carbonate, sodium acetate, magnesium chloride, barium chloride, magnesium nitrate, zinc nitrate, aluminum sulfate, ammonium chloride, ammonium diphosphate,
Examples include ammonium acetate, Wjite ammonium, propatoolamine hydrochloride, and the like.

To describe the treatment method of the present invention in more detail, it is preferable to immerse the organosilicone in an aqueous solution containing salts and optionally other additives, auxiliary agents, etc., after impregnating or applying the treatment solution. , drying, steaming treatment, etc. may also be used. The treatment temperature in the dipping treatment is usually room temperature to 80°C, preferably 40 to 70°C.

After treatment, it is usually preferable to remove liquid, dry, and finish setting.

The amount of organosilicone applied is usually 0.1 to 3%, preferably 0.5 to 1, based on the weight of the molded product. The amount of salt to be used depends on the processing method, but it is preferably about 3 to 30% based on the weight of the molded product.

The present invention will be explained below with reference to Examples.

Example L The dyed polyester knit was dyed using a jet dyeing machine,
Organosilicon quaternary ammonium salt 1.0% owf represented by the following formula while rotating in water with a bath ratio of 1:15
was added and mixed uniformly, and then S hot water 5% OWF was added, the temperature was raised to 65° C. over 15 minutes, and the mixture was treated at that temperature for 20 minutes.

Next, after centrifugal dehydration, it was dried and heat set at 160'0 to perform antibacterial treatment. In addition, as a comparative example, a sample to which mirabilite was not added was also prepared. The degree of reactivity was measured by residual bath colorimetry using bpmphenol blue color reaction.

Antibacterial properties were tested using the mold resistance test method Tl5-Z.2911-19'76.

As a result, the reactivity of the present invention treated with antibacterial treatment by adding Glauber's salt was 90%, which was 3 times higher than the 31% of the comparative example without the addition of Glauber's salt.

Also, there is a clear difference between the two in antibacterial tests.
The effects of the present invention were clearly praised.

Furthermore, the treated fabric according to the present invention was also significantly superior in durability.

Example 2 Dyed nylon pantyhose were dyed using a paddle dyeing machine, and 0.8% OWF of the same organosilicon quaternary ammonium salt as in Example was added in water at a bath ratio of 1:30, and heated to 40°C. After raising the temperature, 6% OWF of ammonium sulfate was added, and the temperature was then raised to 60° C., and the mixture was treated at that temperature for 30 minutes. Then, after centrifugal dehydration, it was placed in a foot mold at 115℃ x 5'
I did a steam set.

For comparison, a sample without ammonium sulfate was also prepared.

As a result of testing the reactivity and antibacterial properties in the same manner as in Example 1 of Actual F6, the reactivity of the organosilicon quaternary ammonium salt was 85% with the addition of ammonium sulfate, 2.5 times that of the unadded one.
It became. There was also a clear difference in antibacterial properties between the two.

Example Dyeed polyester/cotton (50150) blended milled knit was dyed in a wince dyeing machine with a bath ratio of 1=20 and the same organosilicon quaternary ammonium salt as in Example 1.5% OWF and common salt 20% OWF. was added, the temperature was raised to 65° C. in 20 minutes, treated at that temperature for 45 minutes, washed with water for 5 minutes, centrifugally dehydrated, dried, and subjected to antibacterial treatment. For comparison, a sample to which no salt was added was also prepared. The degree of reactivity was determined by observing the state of adhesion of the organosilicon quaternary ammonium salt reacted to the treated fabric by observing the coloration of bromophenol blue.

As a result, the processing agent was found to be attached only to the cotton in most of the antibacterial treated fabrics without the addition of salt, whereas the processing agent was uniformly attached to both the polyester and cotton in the salt-added fabric. could be observed.

Patent applicant: Toyobo Co., Ltd. 11- 266-

Claims (1)

[Scope of Claims] An antibacterial treatment method characterized by adding organic and/or inorganic salts to the treatment solution when treating an L5 molecule molded article with an organosilicone having a quaternary ammonium base. z The organosilicone having the 49th ammonium base is a compound represented by the formula %).
antibacterial treatment method.