JPS5966570A - Production of modified polyester 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 The present invention relates to a method for producing modified polyester fibers having excellent durability.

Conventionally, polyester fibers have been used for the purpose of imparting functions such as antistatic, water absorption, antifouling, moisture absorption, water exchange, oil repellency, anti-pill, flame retardant, flame retardant, anti-melting, antibacterial, and deodorizing properties. Methods of processing with various modification processing agents (hereinafter referred to as "processing agents") have been proposed. However, these methods usually
The processing agent is only attached to the relatively surface of the fibers, and therefore, the processing agent comes off during washing, dry cleaning, etc., and its durability is limited.

On the other hand, a technique has also been proposed in which a polymerizable finishing agent is applied to the fiber surface to form a high molecular weight resin film, thereby reducing water solubility and solvent solubility and improving durability. With this technique, the texture of the fibers changes significantly, and the 4Y4 resin coating is likely to peel off due to physical friction caused by the rubbing effect of washing ia, and its durability is limited. Therefore, there is a need for a modification θl of polyester fiber that can semi-permanently add a modifying function while maintaining a soft feel/ζ-.

The purpose of the company was to improve upon such conventional technology by creating a new IJ ester fiber that has a soft texture, 2. has excellent durability against washing, etc. is to provide.

Modified Jj zl according to the present invention? The manufacturing method of IJ ester fiber is to process polyester fiber with modified + P5 processing agent to obtain modified polyester 11 stone 11. ! When making X'i Ding, the polyeste river
・ Le (A! #ffi and L7 are made of real polyethylene terephthalate fiber 11, > rf!
! ] ＞IZ, mechanically fighting against frequency 110Hz (1 loss 1 [Tangential (groaning δ)? Peak temperature (T
At 5°C, the peak value of 1-1 tan δ (i, δ)
A polyethylene pulley lifter with maX of 0.08 or more must be used. 1" symbol.

[Polynis Al fiber] as used in the present invention is a linear polymer containing ethyl 1/n terephthalate as a main repeating unit, and the third component and 17 are isophthalic acid, sodium salt of sulfone hyisophthalic acid, polyethylene glycol, etc. Including those obtained by copolymerizing less than 50% of Also,
It may also contain matting agents, stabilizers, antistatic agents, etc., which are generally added to synthetic PR fibers.

71j: The dust content is within the normal range for Vt fiber formation, so there are no particular restrictions.

1 Conventionally, polyethylene telefter (i.
The fibers for this purpose are made by drawing the undrawn fibers spun at a spinning speed of 2.000 mA) 3 to 5 times to obtain UO! )Z was the norm. Such a drawn yarn has an extremely strong 1
1111 It has an amorphous region and the peak temperature (Trr+ax) of the measurement frequency 110H'' is around 125 to 135℃, and the peak temperature (Trr+ax) of the chemical loss tangent (-δ) is around 125 to 135℃.
11] 'I'max after dyeing, dyed under high temperature near
% ・125-135℃ Near 1lfj.

Recently, a method called POY or high-speed spinning fiber, which improves productivity by reducing fiber production during the spinning process alone without drawing, is gradually being adopted.

What is called POY is 3. '(1(10%'+)
It is a fiber that is spun at a spinning speed of about (↑1rlδ)m of bulky yarn is 0 before and after dyeing.
．． Around 10, TnaX is 120+- before and after staining
The temperature is 130°C.・ In addition, POY that does not go through the stretching false twisting process is (t11nδ) □
8 is 10, Tma. is around 90℃, but during dyeing, the yield exceeds 3.Oq6, and the initial modulus at 30℃ is
9/d or less.'' (Hiroshi! 1-if &
J, ・2, iid or less, elongation is 80 or more, not used for practical use as a suritsu for clothing 0
・ It's a ridge, high speed spinning fiber # (+, Zumanwachi spinning speed 4.oo.

8.00, Otn 7 minutes, undrawn fiber d2, (1+++1δ) mix approximately 0.10 or more, Tm11X 110-115℃1i[''
After being dyed at 100-130℃ (hn
? ))max is 0.08~011, Trr+nx
becomes 115-125°C.

That is, due to the action of hot water during dyeing, the microstructure changes.

To summarize, conventionally, with polyester fiber, the measurement frequency 11. tanδ at OHz
The peak temperature Tmax (1:) is 1059 or more,
'T, peak value of lnδ (tanδ) m88 is 0.0
There was no material that had +1゛ζ construction characteristics of 8 or more and had been put to practical use as a textile for clothing and clothing.

It is in the amorphous region that the disperse dye dyes the polyester fiber. The above TjIlaX and (tan
The value of δ)may is appropriate.

T jna In the present invention, TmAx and (Shin JJ)rp
x is the microbrown of the molecular mark inside the amorphous region:)5i
χ′j is the value related to mechanical absorption (αA absorption) caused by j motion. Therefore, qualitatively (Peng δ)
The larger Tmax is, the more amorphous regions ■ there are, and the lower Tmax is, the microbrown j''!monovalent molecules of the molecular chains in the amorphous regions become active at low temperatures, making it easier for processing agents to be adsorbed. The processing agent penetrates into the inside of polyester mv, and the diffusion phenomenon is 'Ct, 1n l!l') max and Tm
ax"'In relation to the secret I, tampering with the varnish copy #II'<
It's □Measurement frequency class"11'0'J (width δ at z)
max'l') value is '02()8 to 1, and Tm
The process was completed based on the knowledge that when az is 105° C. or higher, the processing agent has good iron layer properties and good penetration into the inside of the slit yarn 11. Preferably, N Tmax is 80L'105°C, and (tan a ) may be o, os~05+.

The eggplant agent used for unexploded fjl is
J'it is water absorbent, stain resistant, 1] (moisture, water repellent, pain repellent, anti-pill, flame retardant, ff11F fire, anti-Al1!, anti-1:
11. It refers to compounds that have been used to delicately provide functionality such as deodorization, and usually consists of a compound having a functional group.

The molecular weight of such chemical substances is preferably 2.50 (1 or less: 4) □′ □ Antistatic, water absorption, antifouling,
Y(?'ltj, Q as a compound for hydrophilic lateral forces
Yo, y]? Block polymer of polyethylene glycol and polyethylene derephthalenite 1, Jl) Lyoxyethylene glycol diacrylate, acrylic acid and methacrylic acid Methoxypolyethyl 1/n glycol ester, N-methyb- Examples include acrylic acid amide, methacrylic acid, and the like.

Examples of compounds for imparting water and oil repellency include aluminum soap, ammonium dicarbonate, a-1=)butyl acetate/butyl chicune-1-979 compound, stearic acid chromic chloride, and stearoylmethylamide methylene bicarbonate. Organic fluorine compounds such as rhizonium salts, fluorinated polyacrylic acid alkyl esters,
Examples include silicon compounds such as methyl-hydro-di-ene and polysiloxane.

Examples of flame-retardant and flame-retardant imparting compounds include phosphorus-containing compounds, rhodan compounds, and urea-formalin reactants. Such compounds include, for example, tris dibromopropyl phosphate, tetrakis hydroxymethylphosphonium chloride, and compounds of the formula:

Examples of antibacterial and deodorizing compounds include quaternary ammonium compounds, organic mercury compounds, phenol and its chlorinated products, and organic acid metals such as naphthenic acid.
1, a specific example of such a compound is e, N-
Fluorodichloromethylthiophthalimide, N-dimethyl-N'-ph, Ibonyl-N'-(fluorosochloromethylthio)sulfamide, 2-(4-thiazoyl)benz, imidazole, 2-chloro-2-(2 , 4-nochloro, enoxy), enol, chlorhexidine, muchloride, etc.

The molecular weight of the compound having the functional group used as a processing agent is 2,500 or less. That's good. If the molecular weight is larger than that, there will be less adsorption into the interior of the fiber, and the effect of imparting functionality will be small. On the other hand, the molecular weight is 50~
Even in the case of a low molecular weight compound of about 200%, if it is a polymerizable compound, it can be polymerized inside the fiber by treating it with a processing agent under polymerization conditions.

Possible effects of the present invention are shown below.

The amount of these compounds attached to the fibers is 001~15m!
・Preferably 0.5 to 10 times. 0.
When the weight is less than 5 weight and 11%, depending on the compound, the lateral force effect may be low, and the washing durability may be poor.On the other hand, the adhesion of finishing agents to the surface may be high 1′
When the thickness exceeds 5, the texture tends to change significantly.

These compounds f', j? Riester! 1ffli to
When used, it is usually preferable to apply the compound in the form of an aqueous solution to an aqueous emulsion. In addition, - for application, known treatment methods such as immersion-heat treatment, immersion-squeezing-heat treatment, etc. can be used, but in particular immersion-ap'! (Treatment is preferred.

In the method of the present invention, by adsorbing the processing agent onto the polyester fibers and then subjecting them to dry heat treatment at 180° C. or higher, the sinking durability is significantly improved.

The polyester yarn 11 having the same structural characteristics as described in Book 2.1 has a spinning speed of 4. (Undrawn, spun for 100m or more for 7 minutes)? l) Nisdel fibers are heat-treated in a dry heat environment heated to 220° C. to 300° C., in superheated steam, or in a mixed atmosphere of both. In addition, at this time, the tension applied to the delicate part is 1 g.
There is a need to make it less than /d. 71 thus obtained?
Whether the polyester fiber is in its original state, false-twisted using conventional methods, spun, used as a raw material, or made into staple fiber, its f, j# manufacturing properties remain the same; within the scope of the invention.

Next, a method for measuring the mechanical loss tangent (Jj loss tangent (1 tangent δ)) of the polyethylene terephthalate fiber constituting the present invention will be described.

Rheo-v manufactured by Toyo Baldwin
jjr,,,on) Using DDV-11, c type dynamic viscoelasticity measurement equipment, sample, 0.1 m9, measurement type wave number IJ
-δ measurements were taken at each temperature in dry air at OHZ and a postal speed of 1.9 l min.轡δ One temperature curve, one δ peak group ring (Trr, x) ('C), peak value [:
(1, Inδ) m−x) is obtained.

Next, I will give an example and let's see it in action! IJ to tt'+' L <
ridge, clear.

Example 1 Spinning speed 4. 7” spun with OOOm7r’J-? Liethylene tele 7 tallate fiber '75 d/36 f 24
Tension applied to the thread i 0 for 70.85 seconds in air at 8°C.
03,! Heat treatment was carried out under a regulation of 9/a.

Also, compare! Bunnodame, 75 d/36 f drawn at 30°C to 33 times after spinning at a spinning speed of 1.300 m/4;+
The fibers were also heat treated in the same way.

Obtained dud] method fiber (Trnax: 101℃+
(tan δ)□38:0.210) and comparative fiber CT
max: 145°C.

(tAnδ)rnaX=0125] were each knitted into a tricot & H weave and treated with a processing agent. As for processing agent treatment, polyethylene glycol/blade? -3
Immerse it in a solution dispersed in water to a concentration of 0'j;
( ) 0℃ x 60 minutes, followed by hot water washing and dry heat treatment for 2
The test was carried out at 00°C for 40 seconds.

Table 1 shows the antistatic properties and water absorption properties of each knitted fabric. The knitted fabric of the present invention has the highest wash resistance (?ri).
showed his sexuality. '1 in Table 1 Municipality: Measured at 20°C x 40%RH.

Using an honest meter, the applied voltage s, ooov; .

Medium 2 water absorption: Soak 26nllJ knitted fabric in distilled water,
It is expressed as the height of water sucked up per minute.

W: Number of times of washing Example 2 2097 tons of glycolic acid containing 20% by weight of 1.2-(4-thiacylbenzimidazole) was used as processing agent treatment.
The processing agent treatment and dry heat treatment were performed in the same manner as in Example 1, except that the specimens were immersed in a solution dispersed at a concentration of . Table 2 shows the antibacterial properties of the treated knitted fabrics.

Table 2 *1△; Black mold is slightly observed on the surface of the knitted fabric.

×: Black mold is observed on the surface of the knitted fabric. □Test method:
Conforms to JIS-Z-2911 (microresistance test).

Spray a saline suspension of black mold on a Czapek Dox agar medium, add silk and leave it open for 3 days at 30°C.
i'), The distance (ctn) of the area around the silk fabric where black mold did not grow was measured as the inhibition zone. The longer the inhibition zone, the greater the antibacterial properties.

Example 3 The heat treatment system for the spinning speed 4.00 ny yarn obtained in Example 1 was
False twisting heater length 0.8m, Stabilizing heater length 0
．． Using a U51 twisting machine with two 6m heaters,
Temperature IQ of false twisting heater: 1200℃, stabilizing heater temperature set at 1.90℃, twisted yarn on spindle, number of twists: 3.5.90t/m, stretching ratio: 1.1.25
.

False twisting was performed at a yarn speed of 146 ru.

In addition, the spinning speed 1.1) in Example 1 for comparison. , 30
0n1Δ]The drawn yarn of the yarn was heat-treated, and in the same false-twisting machine, the temperature of the false-twisting heater was set to 220°C and the temperature of the stabilized heater was set to 200°C, and the yarn was hooked on the spindle until the number of twists was 3.
．． 500 t/m'+stretch ratio 0.985. Yarn speed 10 (
False-twisted for 1 ny' minutes 7. All processed yarns of the obtained fibers of the present invention and comparison fibers were knitted into smooth knitted fabrics, kneaded for 17 minutes and dyed using the conventional method, and then knitted into antiphrases. -19 (flame retardant processing agent manufactured by Kaisei Fhigaku) 509/ was immersed in a processing solution with a concentration of 85%, and then heated to 200°C.
A dry heat treatment was performed for 40 seconds.

of each fabric obtained! (The combustion performance is shown in Table 3. All knitted fabrics have a 'texture' after dry cleaning.
However, the durability of the knitted fabric produced by the method of the present invention was good.

Table 3: Number of Umbrella DC Ni Dry Cleaning Flame Retardancy: Conducted according to JIS-L-1091-71 Micro-Guchie method.

The smaller the afterflame time (seconds) and the smaller the carbonization area (←)″), the better the flame retardancy.

Example 4 Mixed solution of 7
η] (hereinafter referred to as [η]) is 069, spun at a humidity of 302°C, 0.35 mmφ, and 24 holes.
Spun from a spinneret, cooled at 22°C parallel to the yarn.
After cooling and solidifying with Al Jim at 1:11, add oil to 1 (f
1 and was wound up at a speed of 6,500 m/min. obtained 5
0 d/24 f (DI)gT woven fiber, 245
The fibers were subjected to a tension of 31/d, 1,!9/d for 0.85 seconds in air heated to 1"11.

0, :3.9/d and heat-treated. 9. Thorns (treated fiber #1 [and floor part ■11 IF (-δ)
The max and T□8 are marked and shown on 4.

The IF-treated 4La fibers were treated with ζ iron in the same manner as in Example 3, and the flame performance of the 4!1 fabrics, which were knitted with a flame resistance of 1, was shown in Table 4.

Claims (1)

[Scope of Claims] 1. Polyester fibers are treated with a modifying agent to target all modified polyester fibers (when producing the polyester fibers, the polyester fibers are substantially not polyethylene telescrates), and the measurement frequency is 110 Hz. The peak temperature of the mechanical Jj1 loss jE tangent (taδ) ("Trnax') '(℃
) is below 1()□5℃, the peak value of 'i(')-δ [
71? A method for producing IJ ester fiber characterized by having a structural property of (-δ thickness) of 0.08 or more. □2.
Find 'I'M'lt'F jtlo, which is a material spun at a speed of 00 m/min or more and heat treated under a tjjφ force of 0.1.9/d or less within a temperature range of 220 to 300°C.
)・i”12 surroundings] 1Jiy method of modified 1st quality polyester fiber tuna described in pressure j. 3, shi +, (,, 4i order hZ1: JV41M where the agent has molecules 1i 12', 5' OO or less desired range)l
, Section J 6L: Method for producing modified polyester fibers.