JPS59163484A - Opacity imparted polyester fiber cloth 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 an opaque-treated polyester fiber fabric and a processing method thereof, and in particular, it has excellent washing durability with very little shedding of titanium dioxide coated on the surface. It relates to fabrics and their processing methods.

It is well known that titanium dioxide can provide opacity, and it has also been applied to fibers together with a binder. There is also a method of increasing the temperature of a water bath to exhaust titanium dioxide in polyester fibers using acid, and then heat-treating the fibers to obtain washing resistance.

However, the opaque processing of polyester fiber fabrics obtained by these methods has problems in terms of texture and insufficient washing durability. In particular, methods such as heat treatment to improve the wash resistance of titanium dioxide attached to polyester fibers are very effective (but not very effective).

As a result of intensive research in response to the demand for an opaque finish that is durable against washing, the present invention has been developed to provide a polyester fiber fabric that is sufficiently opaque without impairing its texture and has excellent washing durability, as well as its opaque finish. The aim is to provide processing services.

The present invention does not impose any restrictions on the method of attaching titanium dioxide to the polyester fiber fabric. In other words, there are no restrictions on whether titanium dioxide is attached by the exhaust method or by the pad method. Adsorb titanium dioxide onto polyester fiber using
(JT is also preferable as a means for attaching titanium dioxide to the fabric), but it is not restricted by these.9 In the present invention, a polyester-based material to which diacid/monochitanium is attached by the method described above is used. Fiber ill: A strong coating on polyester fiber coated with titanium dioxide as a means of improving washing durability without impairing the texture of the fabric. As a result of extensive research on resins that form a strong film without impairing the bonding properties, methylol-melamine resins 8, 1 to 5. Q (0, W, f,
) with 1% persulfur ammonium catalyst 0.05-0.8% (o
, w, f,) on a polyester fiber fabric, and after drying, cure link at 150 to 170°C for 1 to 6 minutes. It was confirmed that more than % was retained.

On the other hand, when a commonly used organic amine salt catalyst is used with methylol/melamine resin, the cleaning oil
Only about 62% of titanium dioxide is retained in eye oil. After 50 washes, the residual rate of resin was 48% for the former and 25% for the believer, indicating the presence of double titanium on the polyester fiber. It can be said that this greatly contributes to the adhesion effect of resin to polyester fibers.1 In other words, methylol-melamine resin using a persulfuric acid catalyst has excellent selective adhesion between titanium dioxide and polyester fibers. It has been found that this is a combination that exhibits adhesive properties.

The titanium dioxide used in the opaque processing of the present invention has an average particle size of 0. In order to obtain sufficient opacity, it is desirable that the particle diameter be within the range of 0.5μ. The effect of opacity is weak.

It is preferable that the methylol/melamine resin adheres to the polyester fiber A, 1 [A II fabric in an amount of 0.1 to 5.0% (OLW, F,), and if it is less than 0.1%, it is the object of the present invention. (The inter effect becomes weaker, and if it exceeds 5.0%, the texture of the fabric becomes hard, which is undesirable.
f, ) is preferred; if it is less than 0.05%, there is no catalytic effect, and if it is more than 0.8%, depolymerization occurs and the Binter effect becomes weaker. Also, there is no problem in using persulfuric acid, potassium persulfate, etc. as persulfuric acid catalysts.
Furthermore, it is possible to use a persulfate-based catalyst in combination with an organic amine salt-based or metal salt-based catalyst.1. By treating the adhered polyester fiber fabric, it is possible to obtain an opaque polyester fiber fabric that has a favorable feel and is durable to washing. The polyester fibers used in the present invention include ordinary polyesters having a basic structure of polyethylene terephthalate and polybutylene terephthalate, modified polyesters made by combining these basic compositions, and polyesters and modified polyesters, polystyrene, polyamides, and polyurethanes. It includes composite yarns such as polyethylene, knitted fabrics and non-woven fabrics made of twisted yarns, interlaced yarns, twisted yarns, and there is no limitation on the method of mixing different compositions, but polyester fibers Preferably, it contains 50% or more. Example-1 Titanium dioxide powder with an average particle size of 0.28μ
Weigh out 5.0% ft of light and stir thoroughly with water in a homomixer to disperse the titanium dioxide concentration of the dispersion liquid to 5.0%.
, 0% (o, \v, f,). Next, Soil H & Thread (made of polyester filament twisted yarn)
After scouring and heat-setting a 748 filament (with a diameter of 4150 tenier), it was loaded into a jet dyeing machine so that the bath ratio was 20, and the titanium dioxide solution prepared earlier was injected.

The temperature of the liquid was gradually increased to 98°C. After processing at 98°C for 20 minutes, the temperature was lowered to 35°C, the processed fabric was taken out and squeezed with a munkle. At this time, the amount of titanium dioxide deposited was 4.5% (o,
w, f,). Next, after drying the processed fabric, it was padded with a solution of 2.0% methylol melamine resin (o, w, f, ) and ammonium persulfate 0.1% (o, w, f, ), and dried at 170°C x 1. Cured for a minute. In addition, as a comparison, the same titanium dioxide and fabric as previously prepared were put in a bath with acetic acid to set pIi = 4, treated at 130°C for 5 minutes, dried at lower temperature, and cured at 180°C for 1 minute. After the results were obtained, the two types of finished fabrics mentioned above were washed repeatedly and the residual rate and opacity of the attached titanium dioxide were investigated in order to examine their washing durability. These results are shown in Table 1.As is clear from Table 1, compared to the untreated cloth, both the comparative example and the present invention have a lower opacity due to the coverage H of titanium di-Ll'j-chloride. It can be seen that there is a significant improvement in
In addition, there is a significant difference in washing durability between the comparative example and the present invention, and it is noteworthy that the fabric treated by the method of the present invention has a good TiO2 retention rate and high opacity sustainability. Table; A1 TiO2 concentration (%) 'TiO2 residual rate (%)
/\R□Untreated cloth knee 2+,
.

' Treated cloth 14614.51 1□ 9.31
9.5□1 'a-d 5 times layer 1 3. j z4
．． i 1 69,' 901 ++, 41'
TO←□″゛°″ 2. ! i: 3.7, 5218
0. “′°°゛□゛°［＃20 ′I 13・3.
01.30163effect4.611161n 50 It
' COl 2.5・22 ' 50 '
15.81 j2. [] In this application, washing refers to washing using a household electric washing machine with New Heath (Kao Sekiken i) 0.
Washed in a 2% aqueous solution at 40゛℃XjO for minutes at a bath ratio of 1:30, rinsing for 5 minutes - rinsing with water for 5 minutes - rinsing with water once.
1. Regarding opacity, the difference in reflectance of fabric against a whiteboard and a blackboard background is used as a substitute characteristic for opacity.
, (−Reflectance of the cloth on the whiteboard (%)−Reflection of the cloth on the blackboard $
(%)) was used. The wavelength used (yo560, μ/\
The smaller R is, the more opaque it becomes.Example-2 Particle size: 0.237 And so.

After scouring and heat-setting a 100% polyester twill fabric using 8-sided 101 polyester filament threads, it was 90% twilled with the previously prepared pad solution and batted mangle.
% pickup, and after drying, the resin solution of Example 1 was treated in the same manner.

The residual rate and 7＼几 of titanium dioxide deposited on the treated fabric by repeated anti-layering in a spinning motion were measured, and the results shown in Table 2 were obtained. The retention of titanium dioxide and the persistence of opacity after repeated washing of the processed fabric were extremely good.

2nd table treated cloth 1 4.5 □'s, 51:
1 After washing 5 times,
18.814.0' 88.8
□ //10//l Ro, 5
7 Ro, Ro :9. ε−=20−/
2.6' 57.
7 '9.4'/150//l
2.4 5ro, ro
9,8'Example-6 After applying 471 pieces of dicarbohydrate to a polyester filament fill fabric using the same method as in Example-1, 2.0% methylol-melamine resin (o, w, f,) and a catalyst were added. as organic amine salt 0.1% ('(1,W, i',)(!-
Ammonium persulfate IJ, 1% (0, W,
f, ) y;e The washing durability of titanium dioxide on polyester fibers when exposed to water was compared. As shown in Table 6, the washing durability of the ammonium persulfate catalyst was better than that of the organic amine salt, and it was found that it had excellent film-forming ability.

Table 3 Example-4 Force l work processed using the same method as Example-1 and Example-
In case 1, dic< titanium nitride treatment was not performed, and a solution of 2.0% methylol-melamine resin (o, w, f, ) and ammonium persulfate 0.1% (o, w, f, ) was used in a vat. Table 4 shows the results of comparing the methylol/melamine sesame resin residual IIT in the wash layer of processed fabrics that have been dried and cured at 170°C for 1 minute. It turns out there are a lot of idiots.

Table 4 Methylol/melamine resin firefly

Claims (3)

[Claims] (1) In a polyester fiber fabric coated with titanium dioxide, the titanium dioxide is bonded to the polyester fiber fabric with methylolmelamine resin, and 60% or more of the titanium dioxide deposited after washing with water five times is Opaque polyester fiber fabric with excellent washing durability, characterized in that more than 50% of the titanium dioxide deposited on it remains after washing with water and washing R 50 times. (2) 0.1 to 5.0% methylol/melamine resin ((+
, W, f, ) with a persulfuric acid catalyst of 0.05 to 0
．． 8% (0, W, f, ), dried,
A method for producing an opaque polyester fiber fabric that is cure-linked and has excellent washing durability. (3) A method for producing an opaque polyester fiber fabric with excellent washing durability according to claim (2), characterized in that a persulfate-based catalyst or ammonium persulfate is used.