JPH0197277A - Antibacterial fiber product improved in discoloration - Google Patents

Abstract

PURPOSE: To obtain a durable antibacterial fiber product prevented from and improved in discoloration such as lowering in whiteness or yellowing by treating a fiber product by combinedly using an organosilicone having a quaternary ammonium salt with a specific sulfonic acid or its salt. CONSTITUTION: This antibacterial fiber product having washing durability while prevented from discoloration such as whiteness lowering or yellowing of a fluorescent stained material is obtained by treating a fiber product comprising natural, regenerated, semi-synthetic or synthetic fibers with an organosilicone having a quaternary ammonium base expressed by formula I (n) is 16-20}, then treating with a sulfonic acid of formula II [R1 and R2 are each H, a 1-3C alkyl or a 1-3C alkanol; X is (CH2 )n (n) is 0 or 1-5}; Y is H, NH4 or an alkali metal] or its salt an partially sequestering the quaternary ammonium cation.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to antibacterial textile products, and more specifically, it improves the discoloration of fluorescent dyed products such as deterioration of white skin and yellowing, and improves the durability. We are committed to providing antibacterial textile products.

[Conventional technology and problems to be solved] Various types of microorganisms such as mold and bacteria live in the atmosphere and have harmful effects on textile products and the human body.
It goes without saying that the growth and reproduction of bacteria attached to textile products such as interior products and exterior products, especially socks, underwear, bed sheets, covers, etc., is harmful to human health. be.

Conventionally, in order to solve these problems, methods of treatment with a halogenated phenyl compound, treatment with a cationic surfactant containing a quaternary ammonium base, and treatment with a cationic polymer having 3 quaternary ammonium bases have been used. A method of treating with an organosilicone containing a quaternary ammonium base, etc. are known. However, these known methods also have various problems.

Halogenated phenyl compounds are toxic to the human body (carcinogenic), and compounds containing quaternary ammonium bases not only have problems with durability and texture, but also cause problems such as deterioration of white skin and yellowing of textile products. It has drawbacks such as discoloration.

The present inventors have solved these conventional problems and provided an antibacterial fiber-in product that improves discoloration such as deterioration of white skin and yellowing.

[Means for solving problems]

The present invention is a textile product treated with an organosilicone having a quaternary ammonium base represented by the following formula A, wherein the quaternary ammonium cation in the organosilicone is a sulfonic acid or its salt represented by the following formula B. It is characterized by being at least partially blocked by.

Formula A (in the formula, n is an integer of 16 to 20) Formula B % Formula % In the formula, R1 and R2 represent a hydrogen group, a C3-C1 alkyl group, or a C1-C1 alkanol group.

X bar eCHz+lIl (in the formula, plow is 0 or 1 to 5
), and Y represents H, NH, or an alkali metal atom.

The textile products according to the present invention have the excellent antibacterial properties and washing durability of organosilicone containing quaternary ammonium bases, and have features such as being able to prevent discoloration such as deterioration of white skin and yellowing due to treatment. .

The organosilicone having a quaternary ammonium base used in the present invention has the -fi formula (R2)3
S i-Rs NΦ(R<)n(R5)z-nX
G (wherein R2 is an alkoxy group, a halogen atom, or an acyl group.

One may be a hydroxyl group.

R1 may be a 2@ 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 an oxygen atom or a nitrogen atom. good.

R1 is a lower alkyl group, R1 is an alkyl group having 1 to 20 carbon atoms, an alkenyl group, a cycloaliphatic hydrocarbon group, an aromatic group, or an alkaryl group.

n is an integer of 1 to 3, and X is an anion, such as a chlorine atom or a bromine atom. ) is exemplified.

More preferred compounds include: (In the formula, n is an integer from 16 to 20) is exemplified.

The asterisks above for organosilicon indicate the solid content.
The amount is usually 0.1 to 5% by weight, preferably 0.5 to 2% by weight, based on the weight of i.

Any treatment method may be used, such as submerged treatment, pad/dry treatment, spray/dry treatment, pad/steam treatment, etc.
However, submerged exhaustion treatment is particularly advantageous.

The processing conditions are usually a bath ratio of 1:3 to 100 and a temperature of room temperature to 100.
Exhaustion treatment is preferably carried out at 30°C to 80°C for 20 minutes or more.

In the present invention, it is essential that the organosilicone represented by formula A and the sulfonic acid or its salt represented by formula B be treated together.

Examples of the sulfonic acid or its salt to be used include:
5-Sodium sulfoisophthalate (β-hydroxyethyl) isophthalate (DEIS), 5-sodium sulfoisophthalate 1 l (DHIS), 5-sodium sulfodimethyl isophthalate? -[:DMIS, ), etc., and may be used alone or in combination of two or more types.

The amount of sulfonic acid or its salt represented by formula B is such that a portion, preferably all, of the cationic groups of the organosilicone are blocked.

As for the treatment method, dipping method or pad method may be used.

In addition, in the present invention, the order in which the organosilicone represented by formula A and the sulfonic acid or its salt represented by formula B are applied is determined by the authorities, and excellent effects can be obtained even when they are used in the same bath in the dipping treatment method, pad method, etc. Obtainable.

Also, a method of treating organosilicone of type A in a pre-process (optional dipping method, pad method, etc.) and treating sulfonic acid or its salt of type B in a post-process (optional dipping method, pad method, etc.),
Further, excellent effects can be obtained even in the reverse case.

The fibers that are the object of the present invention are not particularly limited, but include natural fibers such as cotton, linen, wool, and silk, recycled fibers such as viscose rayon, semi-synthetic L polyamides such as acetate, and acrylic fibers. Examples include synthetic m-fibers such as polyester and polyolefin alone or in combination, composite fibers, filaments made of these m-fibers, knitted fabrics, non-woven fabrics, and sewn products. It may also be a composite product of fibers and other materials.

〔Effect of the invention 〕

In the present invention, by treating with a combination of organosilicone represented by formula A and sulfonic acid or its salt represented by formula B, it is possible to impart excellent antibacterial properties and to obtain washing durability of the effect. Discoloration such as deterioration of white skin and yellowing caused by treating organosilicone represented by formula A can also be prevented by treating in combination with sulfonic acid or its salt represented by formula B.

[Example 1] Scoured, bleached, and fluorescently dyed cotton knitted fabric was immersed in a 3% O-f aqueous organosilicone solution containing a quaternary ammonium base represented by the following formula, heated to 50'C, and left for 15 minutes. After treatment, 5-sodium sulfoinphthalic acid was
%owf was added, treated for 15 minutes, dehydrated, and dried to obtain an antibacterial treated cloth.

As a comparative product, a sample to which 5-sodium sulfoisophthalic acid was not added was also prepared.

These treated fabrics were tested for white skin reduction and antibacterial durability due to heat treatment.

The heat treatment was performed using a dry heat tester manufactured by Suga Testimonial Co., Ltd.
An incubation treatment was performed at 60°C for 2 minutes, and the degree of discoloration of the heated portion was evaluated.

Durability was evaluated by testing the antibacterial properties of treated samples and samples after 50 home washings using the mold resistance test method of JIS-Z 2911-1981.

The results are shown in Table 1. The antibacterial treated fabric without the addition of 5-sodium sulfoisophthalic acid has a greater decrease in white skin than the fluorescent dyed fabric (untreated fabric), but the antibacterial treated fabric with the addition of 5-sodium sulfoisophthalic acid Comparison with raw fabric [Example 2] A scoured, bleached, and fluorescently dyed wool serge was padded with an aqueous organosilicone solution containing a quaternary ammonium base having the following formula of 4fI/1 and dried.

The cloth was then padded with a 4 g/l aqueous solution of 5-sodium sulfodimethyl isophthalate and dried to obtain an antibacterial treated cloth.

Dry heat treatment was carried out at 160'C for 2 minutes in the same manner as in Example 1, and the degree of discoloration was evaluated.The processed fabrics that were not treated with sulfonic acid showed a large reduction in white skin, while the treated fabrics showed almost no reduction in white skin. was not recognized.

Claims (1)

[Scope of Claims] A textile product treated with an organosilicone having a quaternary ammonium base represented by the following formula A, wherein the quaternary ammonium cation in the organosilicone is a sulfone represented by the following formula B. An antibacterial textile product with improved discoloration, characterized by being at least partially blocked by an acid or a salt thereof. Formula A ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, n is an integer from 16 to 20) Formula B ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ In the formula, R_1 and R_2 are hydrogen groups or alkyl groups of C_1 to C_3 Or it represents an alkanol group of C_1 to C_3. X is ■CH_2■_m (in the formula, m is 0 or an integer from 1 to 5)
, and Y represents H, NH_4, or an alkali metal atom.