JPS60119274A - Prevention of deterioration of polyester urethane fiber - 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 Technical Field The present invention relates to a method for preventing deterioration of polyester polyurethane fibers, and more specifically, the present invention relates to a method for preventing deterioration of polyester polyurethane fibers.
) is related to a method for preventing deterioration caused by

PRIOR ART In general, polyurethane polymer compounds are used for fibers and -t+h
-T@ It is well known that deterioration occurs due to the force that is widely used for materials (such as sunlight, heat, chemicals, mold, etc.) due to their structure. It is well known that urethane fibers are subject to deterioration due to mold, and in order to prevent this, methods of adding fungicides internally or post-processing have been found in many literatures and have also been practiced in practice. There is.

However, if polyester-based polyurethane fibers are treated with anti-mildew treatment at the same time or after dyeing and finishing, and then left in a wet state for 1 to 2 days, problems may occur such as yellowing and a decrease in the strength of the fibers. may occur.

Summary of the Invention The present invention, as a result of intensive studies regarding this problem, has revealed that the cause of deterioration is bacteria of the genus Bacillus (especially Bacillus 5ubti11s + Bacillus).
It was discovered that S. spumllus (hereinafter omitted) is involved. In addition, in the case of mold-induced deterioration of polyester polyurethane fibers, when spores and hyphae are attached and cultured at 25 to 30°C, deterioration begins several days or several days after IO, whereas Pacillus bacteria It was also found that when cultured under the same conditions, deterioration occurs within a few hours to over 10 hours.

In this way, deterioration caused by bacteria occurs in a short period of time, so in reality it is considered to be more of a problem than deterioration caused by mold.

There are various documents regarding the prevention of deterioration using antifungal agents, but
The present inventor has also confirmed that this is only effective against mold, and is not effective against bacteria of the genus Gucillus. Bacillus bacteria, which causes deterioration, are present in large numbers in the Wakujo atmosphere, and in reality, it is estimated that preventing deterioration using only antifungal agents is almost ineffective.

The present inventor has developed a polyester-based polyurethane #1. We are conducting a thorough investigation on methods to prevent fiber deterioration.
As a result, the present invention has been completed, and the present invention provides a method for preventing deterioration of polyester-based urethane fibers that can satisfy the above-mentioned objects.

That is, the present invention uses polyester polyurethane fibers,
Provided is a method for preventing deterioration of polyester polyurethane fibers, which comprises treating with a solution containing at least 0.3% (by weight) of at least one antibacterial agent effective against Bacillus bacteria based on the weight of the fibers. .

Detailed explanation of the constitution of the invention As the antibacterial agent in the present invention, Bacillus
Bacteria of the genus Bacillus (especially Bacillus 1ubti)
Antibacterial agents that are effective against P. lls and Baeillus + pumirug include, for example, 0-pe/zylphenol, o-phenylphenol, 4-chloro-3,5-xylenol, hexachlorophene+ 2 + 4 +
4'-) Lif o -2'-hydroxydiphenyl ether, acetylphenyl salicylic acid, salicylic acid β
- Naphthyl, I-naphthyl benzoate, methyl paraoxybenzoate, ethyl paraoxybenzoate, η-propyl paraoxybenzoate, η-butyl paraoxybenzoate,
Acyl oxybenzoate, pentyl oxybenzoate, alkyl polyaminoethylglycine (alkyl is 08-22)'acetic acid-normal dodecylguanidine, hydrochloric acid-normal dodecylguanidine, guaditine, chlorhexinone gluconate.

Examples include chlorhexinone hydrochloride, alkyldimethylpentyl ammonium salt (alkyl is C8-2□), and the like.

Antibacterial agents that are soluble in water should be dissolved in water, and those that are not soluble in water should be emulsified using an emulsifying surfactant or dissolved in a solvent such as alcohol.
Use with -.

The anti-soothing agent is 0.3% (heavy-hazardous) or more based on the weight of the fiber,
Ideally, use 5 or more units. However, it is also possible to use an oiling agent or a finishing agent during treatment.

The treatment may be carried out by a conventional dipping method, Rad method or other method. Since the appropriate processing temperature differs depending on the drug, it is preferable to select an appropriate temperature for processing.

By the method of the present invention, deterioration of I-lyester polyurethane fibers due to bacteria can be prevented.

Example The invention will be further explained below with examples. I will clarify.

Example test system: Eyes refined by conventional methods? Lyester type 4? Urethane fiber yarn.

Treatment: Thread in each antibacterial solution at 40℃ and 80℃
After soaking for 15 minutes in a centrifugal dehydrator, the water content is reduced to 15%. It was then air dried.

Deterioration test M: Place the yarn together with the sample yarn in a liquid medium of Pacilus J't and continue culturing at 37°C to check for deterioration.

Evaluation method: The yarn subjected to the deterioration test was subjected to a scanning electron microscope (MsM
The surface was observed using a model (Model -9, newly manufactured by Akashi Seisaku), and the following judgment was made based on whether pinholes or cracks had occurred.

0: There are almost no pinholes, cracks, or cracks, and no deterioration has occurred (see Figure 1).

×: There are many pinholes and cracks, and there is almost no strength and deterioration has occurred (see Figure 2).

Results: It can be seen that although antibacterial agents have excellent deterioration prevention effects, antifungal agents have no electrodynamics at all.

The results are shown in Table I.

Margin below

[Brief explanation of drawings]

Figures 1 and 2 are electron micrographs of polyester-based polyurethane fibers treated in Examples. Indicates ×. Patent Applicant Nicca Chemical Industry Co., Ltd. Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney Yoshi 1) Tsuyoshi Patent Attorney Akira Yamaguchi Patent Attorney Masaya Nishiyama Procedural Amendment (Spontaneous) 1982 IJ] 27th Japan Patent Office Commissioner Kazuo Wakasugi1, Indication of the case 1982 Patent Application No. 2195842, Name of the invention Method for preventing deterioration of polyester polyurethane fibers 3, Relationship with the amended person case Patent application Person name NICCA CHEMICAL INDUSTRY CO., LTD. 4 Agent 5 Column 6 of “Detailed description of the invention” in the description of the subject matter of the invention Contents of amendment (a) Page 4 of the specification, line 17 Work 44411 “Paraoxy "Acyl benzoate," should be corrected to "Amyl oxybenzoate." (b) On page 6, line 3 of the specification, the phrase "test system" is amended to read "test yarn."

Claims (1)

[Claims] 1./Reester-based polyurethane fiber is made into Nonosils (
A method for preventing deterioration of polyester-based polyurethane fibers, which comprises treating with a solution containing at least one type of antibacterial agent j that is effective against bacteria of the genus Bacillus (Bacillus) at least 0.3 h (by weight) based on the weight of the fibers. .