JPS58132174A - Synthetic fiber knitted fabric and production thereof - 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 woven or knitted fabric made of a synthetic fiber having a coating made of a fluorine-based monomer on its surface with excellent durability, and a method for producing the same.

Conventionally, a method of coating the surface of a synthetic fiber woven or knitted fabric with a fluoropolymer is well known for the purpose of imparting functionality such as water-based properties, #1 oil-based properties, antifouling properties, and color development properties. Specifically, a solvent solution or aqueous solution of a fluorine-containing iris polymer is applied to a woven or knitted fabric, and after drying, heat treatment is performed as necessary to form a skin H of a fluorine-containing yarn polymer on the surface of the fiber. However, in order to improve durability, the amount of processing agent is reduced to 1.''C.For applications such as diaper covers, a processing technique that does not change the texture is used. It was especially requested.

The present inventors have conducted intensive studies on a method for forming a flexible fluoropolymer film with excellent durability on the surface of a woven or knitted fabric made of 1 m synthetic fibers.

Achieved the present invention]-.

That is, the present invention provides (1) a copolymer of an acrylate or/and methacrylate comprising a synthetic fiber and having a fluorine residue, and an acrylate or/and methacrylate containing an alkyl or alkylene group having 3 or more carbon atoms in the molecule; A woven fabric characterized by having a film on its surface consisting of:

(2) Copolymerization of 7-acrylate or/and methacrylate having a fluorine residue and 7-acrylate or/and methacrylate containing a furkyl or alkylene group having 3 or more carbon atoms in the molecule on the surface of a woven or knitted fabric [7. This processing method is characterized by:

The present invention provides one or more types selected from acrylates and/or methacrylates containing an alkyl or alkylene group having 3 or more carbon atoms and/or methacrylates containing a fluorine residue as a soft segment. It is unique in that the compound is copolymerized on the surface of the fiber, resulting in the formation of a flexible and durable water-repellent film on the surface of the fiber, making it durable and water-repellent.

A woven or knitted fabric with a soft texture and excellent oil repellency can be obtained.

Examples of the acrylate-F having a fluorine residue or the methacrylate having a fluorine residue used in the present invention include CnFna+凰-8にNc, H4I(HekuteR), and the like.

Acrylate-F and methacrylate having an alkyl or alkylene group having 3 or more carbon atoms are represented by the general formula %ci: c, or more alkyl or alkylene group], such as l-butyl 7 acrylate or n-butyl. methacrylate, 1so-butyl 7-acrylate or 1so-butyl methacrylate, 2-ethylhexyl acrylate or 2-ethylhexyl methacrylate, indecyl acrylate or isodecyl methacrylate, lauryl acrylate or lauryl methacrylate, sudearyl acrylate or Examples include stearyl methacrylate, oleyl 7-tallylate, and oleyl methacrylate.

A method for forming a film made of the 21I compound on the fiber surface is to apply an aqueous solution, aqueous dispersion, or solvent solution containing the compound and a polymerization initiator such as benzoyl peroxide or potassium persulfate to a woven or knitted fabric; Then 90℃~14
A method of steaming at 0°C for 1 to 10 minutes, a method of applying an aqueous solution, aqueous dispersion, or a solvent solution containing the compound and a photosensitizer such as benzophenone to a fibrous fabric, and then irradiating the compound with ultraviolet light; - applied to a woven or knitted fabric in the form of an aqueous solution, aqueous dispersion, or solvent solution [7 Methods such as irradiation with electron beams are used.

The compounding ratio of the two types of compounds is preferably 5 to 100 parts by weight of the compound having a fulkyl or fullkylene group having 3 or more carbon atoms per 100 parts by weight of the fluorine compound. stomach.

In the present invention, the fibers used in the woven or knitted fabric may be any of natural fibers, organic synthetic fibers, and inorganic fibers, and in particular, polyester, polyamide, polyacrylonitrile, polyvinyl chloride, and Voriole can be used.

Although the processing of the present invention is generally carried out in the finishing process after dyeing, it may also be carried out before dyeing.

According to the present invention, it has become possible to impart water- and oil-repellent functions with excellent durability to synthetic fiber woven and knitted fabrics. It also has the effect of improving the color development of dyed products.

The present invention will be explained in more detail with reference to Examples below. In addition, the evaluation methods for water repellency, Il oil resistance, and durability in the examples are as follows.

Water repellency (spray method) JIS L-1079-6@K compliant: 20
A test piece of 51 x 20c1m in diameter lS, from country Z <KL
Attach it so that it does not create wrinkles, align the center of the spray with the center of the frame, and pour 250 - of room temperature water into the funnel 1-1.
Spread this on the test piece. Next, after removing excess water droplets, the wet state is evaluated using a standard evaluation table and a comparison control.

The following table shows the water repellency scores and criteria for determining the condition.

Oil repellency A, Mu, T, C, C, was evaluated according to standard test method 118-1.975. Judgment is based on the penetration resistance of various oils shown in the table below. Judgment values are classified from 1st class to 10MK,
Grade 1 is the lowest oil repellency, and grade 10 is the highest oil repellency.

Durability test Durability (washing resistance) was examined by washing the product in a 40°C washing liquid containing 1 f/l of neutral detergent using a homemade noodle washer.

Laundry 1. Glue, bind, wash continuously for 100 minutes #11. 8. Let's assume that the case of continuous washing for 200 minutes is . Also, dry cleaning durability test and 1. 30℃
Treated with Perclean solution (liquid ratio 1:SO) for 30 minutes in a round-o-meter, and 8! ,Ta.

Note that in the following examples, q means the vehicle amount q.

Example 1 Polyethylene terephthalate filament yarn (lso denier/48 filament) was false-twisted to obtain a tropical fabric (basis weight: 1110 t/-). After passing this sample through the usual scouring preset process, the fluorescent dye Micahoi)
ATN (manufactured by Nippon Kayaku Co., Ltd.) 1% owf *Dispersant Disper VC (WA Seikagaku) 0.5 t/l
, CH,C0OH0.2cc/l, bath ratio l:aO, dye bath temperature 1tllO℃, dyeing time 3
After fluorescent dyeing under the condition of 0 minutes, it was immersed in the following padding bath and squeezed uniformly with 7 rings (pink-up rate sa$)
.

Immediately put this in a steamer while keeping it moist.
Treated with saturated steam for 5 minutes. Heat treatment! After 11 hours, hot water washing was carried out to remove unreacted processing agents.

For comparison, the same treatment was carried out using the above-mentioned bagging solution except that stearyl acrylate was removed. The results are shown in Table 1.

As is clear from Table M1, t! The method of the present invention, which is applied to a surface and subjected to moist heat treatment, has durable water and oil repellency and little change in texture.

Table 1 Here, the change in texture was evaluated by a sensory test based on touch.

Examples 2-5 Comparative Examples 2-6 Polyethylene terephthalate false twisted yarn (ls.

The knitted fabric was knitted into a ponchima yarn (denier/48 filament) and passed through the usual scouring preset process, dyed under the same dyeing conditions as in Example 1, immersed in the following padding bath, and squeezed uniformly with a mandal. (Pickup rate 7115G).

Immediately put this in a steamer while keeping it wet for 100 minutes.
Treated with saturated steam at ℃ for S minutes. After heat treatment, wash with hot water to remove unreacted processing agents. For comparison, the same treatment was carried out using a bagding solution obtained by removing lauryl acrylate or indecyl 7-acrylate from the bagding solution of each Example. Ta. (Comparative Examples 2 to 5) In addition, conventionally known fluorine-containing thread polymer aqueous emulsion Nisso Asahi Guard AC-710 (manufactured by Meisei Kayaku Co., Ltd.) OB *1li
Immersion 1-! Comparative Example 6 and the results are shown in Table 2. As is clear from the results in the following table, after applying an aqueous emulsion to the fluorine-containing polymer,
Dry heat treatment 1. In comparison Z1, in the case of using the fluorine-containing acrylate alone and then heat treatment, the fabric of the present invention has a texture with excellent durability, water repellency, and oil repellency. can get.

Claims (1)

[Claims]
It is characterized by having a film on its surface made of a copolymer of at least one compound and one or more compounds selected from acrylates or methacrylates containing an alkyl or alkylene group with a K111 prime number of 3 or more in the molecule. Woven and knitted fabrics. +21 One or more compounds selected from acrylates or methacrylates having a fluorine residue, and one or more compounds selected from 7 acrylates or methacrylates containing a furkyl or alkylene group having 3 or more carbon atoms in the molecule. A method for processing a synthetic fiber material, which comprises applying two or more kinds of compounds to the surface of a woven or knitted material and copolymerizing the material. (3) Copolymerized enzyme 1 by KtM heat treatment in the presence of a polymerization catalyst. Scope of patent claims! l Fuji The processing method described in item (2). (4) The processing method according to claim (2), wherein copolymerization is carried out by irradiation with ultraviolet rays in the presence of a photosensitizer. (5) The processing method according to claim 111!1(2), in which copolymerization is carried out by electron beam irradiation.