JP2002371482A - Printing method of polytrimethylene terephthalate fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for printing polytrimethylene terephthalate fiber which is free from dullness, excellent in clarity and excellent in color fastness performance. SOLUTION: In the printing of a polytrimethylene terephthalate fiber, a printing method in which a colorant is used in combination with a carrier agent in a color paste.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for printing polytrimethylene terephthalate fiber, and more particularly, to a method for printing without causing dullness of color in printing and obtaining a clear color developing property and high fastness. The present invention relates to a method for printing polytrimethylene terephthalate fiber which is excellent in hand, feeling and recovery from stretching.

[0002]

2. Description of the Related Art Polytrimethylene terephthalate fiber has a glycol having 3 carbon atoms, has a bent structure as a fiber molecular structure, and exhibits excellent elongation recoverability. However, since it is inferior to normal pressure dyeing, high temperature, dyeing under high pressure is necessary, and also in printing, under superheated steam, steaming under saturated steam is also processed at high temperature, wool, natural fibers such as silk, etc. Compared to rayon regenerated fiber and acetate semi-synthetic fiber, the dyed article has disadvantages such as dull color and poor clarity.

[0003] On the other hand, the criterion for selecting clothing items by consumers is that color and patterns are particularly noticeable, especially in printed products, and further improvements are being made as clothing products of polytrimethylene terephthalate fiber printed products. In this case, clear color development without dull color is an indispensable subject. Conventionally, vivid color dyes have been developed as disperse dyes, but these are specific hues that emit fluorescence and cannot be used for any general colored color. No sharpness is obtained. In addition, many of such dyes having a specific hue have a drawback that the color fastness is lowered, and are not practical.

[0004] Japanese Patent Application Laid-Open No. 2001-55675 discloses that in printing a structure containing a polypropylene terephthalate fiber, the processing temperature of superheated steam, which is a coloring step, is set to 14 or less.
0 ° C to 160 ° C, and the treatment temperature with saturated steam is 110
A printing method of treating at a temperature of from 120C to 120C has been proposed. Since the polyethylene terephthalate fiber is steamed at a lower temperature than that of the polyethylene terephthalate fiber, the original crimping property and expansion / recovery property of the polypropylene terephthalate fiber are well maintained, but the color is not dull and the sharpness is not a satisfactory level. Therefore, a high quality printed product of polytrimethylene terephthalate fiber having a clear appearance without color dullness and high color fastness has not been obtained.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in a printed product of polytrimethylene terephthalate fiber, the color density is the same, the color is not dull, the color is clear and high. An object of the present invention is to provide a method for printing a polytrimethylene terephthalate fiber having a color fastness.

[0006]

The present inventors have made intensive studies on the printing of polytrimethylene terephthalate fiber, and found that the use of a carrier agent in a color paste in the printing of polytrimethylene terephthalate fiber resulted in the above problem. Can be solved, and the present invention has been achieved. That is, the present invention is a method for printing polytrimethylene terephthalate fiber, which comprises using a carrier agent in a color paste in printing of polytrimethylene terephthalate fiber.

Hereinafter, the present invention will be described in detail.
In the present invention, the polytrimethylene terephthalate fiber refers to a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit contains about 50 mol% or more, preferably 70 mol% or more.
Mol% or more, more preferably 80 mol% or more, more preferably 90 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is about 50 mol% or less, preferably 30 mol% or less, and more preferably 2 mol% or less.
The polytrimethylene terephthalate contained in a range of 0 mol% or less, more preferably 10 mol% or less is included.

[0008] Polytrimethylene terephthalate is produced by polycondensing terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions.
In this production process, an appropriate one or two or more third components may be added to form a copolymerized polyester,
Also, polyesters other than polytrimethylene terephthalate such as polyethylene terephthalate and polybutylene terephthalate, and polyesters other than polytrimethylene terephthalate, nylon and polytrimethylene terephthalate may be separately produced and then blended or composite-spun (sheath core, side-by-side, etc.).

Regarding composite spinning, Japanese Patent Publication No. 43-191
08, JP-A-11-189923 and JP-A-2
000-239927, JP-A-2000-2569
No. 18, etc., the first component is polytrimethylene terephthalate, the second component is polytrimethylene terephthalate, polyethylene terephthalate,
Polyesters such as polybutylene terephthalate, and those that are compound-spun into side-by-side type or eccentric sea core type in which nylon is arranged in parallel or eccentrically, especially a combination of polytrimethylene terephthalate and copolymerized polytrimethylene terephthalate, A combination of two kinds of polytrimethylene terephthalates having different intrinsic viscosities is preferable. Particularly, two kinds of polytrimethylene terephthalates having different intrinsic viscosities as exemplified in JP-A-2000-239927 are used, and the lower viscosity side is the higher viscosity side. A composite yarn spun into a side-by-side type having a curved joint surface shape so as to enclose the resin has both high stretchability and bulkiness, and is particularly preferable.

The third components to be added include aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexane dicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.). ), Aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexane dimethanol, etc.), aliphatic glycols containing aromatics (1,4-bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol) , Polypropylene glycol and the like), aliphatic oxycarboxylic acids (such as ω-oxycaproic acid), and aromatic oxycarboxylic acids (such as P-oxybenzoic acid). Compounds having one or more ester-forming functional groups (such as benzoic acid or glycerin) can also be used as long as the polymer is substantially linear.

Further, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricating agents such as aerosil, and antioxidants such as hindered phenol derivatives. Agents, flame retardants, antistatic agents, pigments, optical brighteners, infrared absorbers, defoamers, and the like. In the present invention, regarding the spinning of polytrimethylene terephthalate fiber, polytrimethylene terephthalate is melt-spun to obtain an undrawn yarn at a winding speed of about 1500 m / min, and then twisted at about 2 to 3.5 times. Any of a method, a direct drawing method (spin draw method) in which a spinning-drawing process is directly connected, and a high-speed spinning method (spin take-up method) with a winding speed of 5000 m / min or more may be adopted.

The form of the fiber may be a long fiber or a short fiber, may be uniform or thick in the length direction, and may be round, triangular, L-shaped, T-shaped, Y-shaped in cross section.
It may be a polygonal type such as a type, a W type, an eight type, a flat type, a dog bone type, etc., a multi type, a hollow type or an irregular type. Further, the form of the yarn may be a spun yarn such as a ring spun yarn or an open-end spun yarn, a multifilament raw yarn (including an ultrafine yarn) having a single yarn denier of about 0.1 to 5 denier, a sweet twisted yarn or the like.
Examples include a strong twisted yarn, a mixed fiber yarn, a false twisted yarn (including a drawn false twisted yarn of POY), an air jet processed yarn, and the like, and any of a long fiber and a short fiber may be used. In addition, other fibers such as natural fibers such as wool are blended (silospan or silofil, etc.) and entangled blended fibers (with high shrinkage yarns) within a range of usually 30% by weight or less within a range not to impair the object of the present invention. Of different shrinkage mixed fibers, etc.), alternate twist, composite false twist (elongation difference false twist, etc.), and two-feed air jet processing. The form of the fabric is not particularly limited, and includes a knitted fabric, a woven fabric, and a nonwoven fabric.

In the present invention, the carrier agent used in the color paste comprises an organic acid, an ester, an ether, a hydrocarbon, a phenol, a halide, an amine and the like. For example, trichlorobenzene, dichlorobenzene, α -Methylnaphthalene, β-methylnaphthalene,
Orthophenylphenol, paraphenylphenol,
Metaphenylphenol, diphenyl, dimethyl benzoate, dimethyl terephthalate, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene-polyoxypropylene glycol, polyoxyethylene-polyoxypropylene alkyl ether, polyhydric alcohol fatty acid Ester, polyoxyethylene polyhydric alcohol fatty acid ester, polyoxyethylene fatty acid ester, polyglycerin fatty acid ester, fatty acid diethanolamide, polyoxyethylene alkylamine, alkylamine oxide, alkyl phosphate oxyethylene compound, alkylbenzene sulfone salt, alkylnaphthalene Sulfonate, alkyl sulfonate, α-olefin sulfonate, dialkyl sulfophosphate Salts, alpha-sulfonated fatty acid salts, N
-Methyl-N-oleyltaurine, petroleum sulfonate,
Alkyl sulfate, sulfated oil, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, polyoxyethylene styrenated phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, naphthalene And sulfonate formaldehyde condensate. These may be mixtures.

The use concentration of these carriers is 10
In 0 parts, the amount is 0.5 to 10 parts, preferably 1 to 5 parts. If it is less than this, dullness remains, lacks sharpness, and if it exceeds this, the effect is not improved and cost is reduced. It is uneconomical. Among the carriers used in the method of the present invention, particularly, phenylphenol-based and phthalic acid-based diphenyl-based carriers exhibit a high degree of effect when applied to printing of polytrimethylene terephthalate fiber. Moreover, it is easy to remove residual compounds by soaping after printing, and there is no effect on printed products.

As phenylphenol-based carrier agents, for example, commercially available commercial products include Orton N and Tetrosin P
EC, Neoton C-2 (trade name, manufactured by Yamakawa Pharmaceutical Co., Ltd.), Crescus AB, MA, MPE, PP (trade name, manufactured by Nikko Giken Co., Ltd.), Terrell Carrier V-15 (trade name, manufactured by Meisei Chemical Co., Ltd.) ) Can be preferably used. Commercially available phthalic acid-based carrier agents include Elaster MB (trade name, manufactured by Ssangyong Co., Ltd.), Carrier CL-511 (trade name, manufactured by Nikka Chemical Co., Ltd.), Rebegal PEW (trade name, manufactured by Bayer AG), and IP carrier. C-71 (one company: trade name)
Etc. can be preferably used. Commercially available diphenyl carriers include Remol LF (manufactured by Clariant:
(Trade name) can be preferably used. Examples of the paste used in the printing paste include wheat starch, tragacanth gum, locust bean gum, carboxymethylcellulose, polyvinyl alcohol, and natural, processed, semi-synthetic, and synthetic pastes such as sodium polyacrylate. Good.

The printing method of the present invention is overprinting (direct printing) or discharge printing (including prevention of printing).
Hand printing, screen printing,
All currently used methods such as rotary printing or ink jet printing can be used. Discharge printing methods are broadly divided into discharge printing and prevention. In the case of discharge printing, it is the most important point to carry out dyeing that does not hinder the dischargeability in the subsequent process.The dyeing method in this case is that the dye is not completely diffused inside the fiber and Since dyeing is more convenient, it is preferable to dye the polytrimethylene terephthalate fiber at a temperature lower than 110 ° C. using a disperse dye having a diffusion index of 3.0 or less. in this case,
It is characterized in that it can be easily decomposed and removed by a discharge agent in a later step, and has excellent whiteness and very high whiteness in a white area.

Another discharge dyeing method is called "pull-proofing", and a ground dye is attached to the fiber surface by padding and drying. Basically, the state in which the dye is not diffused into the fiber is maintained, and in this state, printing is performed with a paste containing a discharging agent and steam treatment is performed to decolor the ground-dyed portion. As the disperse dye in this case, by using a dye having a diffusion index of 3.0 or less, the efficiency of the discharge agent is high because the retention property on the fiber surface is very high without diffusing into the fiber, and the discoloration after discoloration is high. The white part also has the characteristic of being very high. The diffusion index in this case is a value obtained by converting the dye diffusibility into the fiber at 130 ° C. dyeing of polyethylene terephthalate fiber into an index (measured by Dystar).
The lower the value, the more difficult it is to spread.

As the discharging agent used in the discharging method, an alkali agent can be used in addition to a commonly used sulfinic reducing agent. In particular, polytrimethylene terephthalate fibers have much higher alkali resistance than polyethylene terephthalate fibers, so that alkali-prevention discharge printing with sodium hydroxide can be effectively used. In the case of alkaline discharge printing, the steaming heat treatment is limited to superheated steam due to the problem of halation, but the obtained product has a very sharp picture and the whiteness of the white field is very high There is. In addition, there is no pollution problem and equipment corrosion as in the case of a normal reducing agent, so that it is advantageous in terms of cost. In addition, a hydrotrope agent or a hygroscopic agent may be used in combination with the discharge paste. After the color paste is printed, a steaming heat treatment is performed as a coloring step.

The steam heat treatment in the present invention comprises superheated steam,
Alternatively, it is saturated steam, and the superheated steam is obtained by heating steam, and is generally called HT steam. The color development temperature with superheated steam is preferably 150 ° C. or less, more preferably less than 130 ° C., and the processing time varies slightly depending on the temperature, but is about 5 to 45 minutes.
Further, the color development temperature with saturated steam is preferably 110 ° C. or less,
More preferably, the temperature is less than 100 ° C., and the treatment time is about 10
~ 60 minutes. In the steam heat treatment in the present invention,
As the processing temperature is lower, there is a feature that a clear color is easily obtained without dulling of the color, and the sharpness in the picture is excellent.
Superheated steam and saturated steam can be used properly depending on the type of fabric, color, pattern, feeling of polytrimethylene terephthalate fiber, stretch recovery characteristics, etc. When it is strongly desired to maintain the characteristics of the above, treatment with saturated steam in a batch system is preferable.

Since the coloring temperature of the present invention is about 20 to 40 ° C. lower than the coloring temperature of polyethylene terephthalate fiber, there is almost no mechanical stain due to dye sublimation, excellent color reproducibility, and polytrimethylene terephthalate fiber. There is also a characteristic that the stretch recovery property of the pulp is excellent and a soft feeling can be obtained. After the color-forming treatment, the conditions for soaping and reduction washing performed for the purpose of desizing and removing the discharge agent or for improving the color fastness may be the usual conditions.
However, the processing temperature in the reduction cleaning is preferably 70 ° C. or lower in order to enhance color reproducibility. Further, the setting temperature at the time of final finishing setting in the rearranging step is preferably 160 ° C. or less from the viewpoint of dyeing fastness. At this time, a finishing agent such as an antistatic agent, a water-repellent agent, and a functional agent which are usually used may be provided. In the present invention, there is no color dullness and vividness means that, in the relationship between the color developing L value and the chroma, the larger the chroma value at the same color density, that is, the same color developing L value, the less dull and vivid the color. It shows something. In the printed product of the polytrimethylene terephthalate fiber obtained in the present invention, a printed product excellent in crispness without color dullness due to high saturation even when the coloring density, that is, the coloring property L value is almost the same, is obtained. In addition, it has the characteristic of having excellent color fastness.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described with reference to examples and the like, but the present invention is not limited to only these examples. The measurement evaluation of the sample in the example was performed by the following method. (1) Measurement of L value of coloring property of printed matter The color density of the surface of the printed cloth was measured with a spectrophotometer (Kollmo).
The L value in the Lab color system was measured using a model Macbeth MS2020 manufactured by Rgen Corporation. The lower the L value, the higher the color developability. (2) Measurement of Saturation of Printed Material The chroma of the surface of a printed fabric is measured using a spectral colorimetric system (Kollmor).
gen, model Macbeth MS2020)
Using the a and b values in the ab color system, calculation was made according to the following equation. Saturation = (a ² + b ² ) 1/2 The larger the value, the higher the saturation and the sharper the color, and the smaller the value, the lower the saturation and the lower the color.

(3) Alkaline Sweat Fastness Printed materials were evaluated using an alkaline sweat artificial sweat liquid according to JIS-L-0848-A method. The degree of contamination of the white cloth attached to the test piece was determined by comparing with the gray scale for contamination. (4) Washing fastness The mixed dyed product was evaluated according to JIS-L-0844, A-2 method. However, the detergent is Attack (Kao Corporation)
(Trade name) 1 g / liter. The degree of contamination of the white cloth piece attached to the test piece was determined by comparing with the gray scale for contamination.

(5) Elastic recovery rate at 10% elongation The fiber was attached to a tensile tester at 10 cm between chucks, stretched at an elongation rate of 20 cm / min to an elongation rate of 10%, and allowed to stand for 1 minute. Then contract again at the same speed,
Draw a stress-strain curve. The elongation when the stress becomes zero during shrinkage is defined as residual elongation (A). The elastic recovery was determined according to the following equation. Elastic recovery at 10% elongation = [(10−A) / 10] ×
100 (%) (6) Elongation recovery rate of fabric For the woven fabric, an average value obtained by repeating 20% elongation five times was determined according to the JIS-L-1096-A method. For knitted fabrics, comply with JIS-L-1018-A
An average value obtained by repeating 00% elongation five times was determined.

(7) Measurement of Whiteness of Printed Product The white value of the printed product was measured for W value in a Lab color system using a spectrophotometer (manufactured by Kollmorgen, model Macbeth MS2020). The higher the W value, the higher the whiteness. (8) Measurement of reduced viscosity (ηsp / c) The polymer was dissolved at 90 ° C. in o-chlorophenol at a concentration of 1 g / deciliter, and the resulting solution was transferred to an Ostwald viscometer and measured at 35 ° C. It was calculated by the equation. ηsp / c = (T / T0 −1) / c T: Fall time of sample solution (second) T0: Fall time of sample solution (second) c: Solution concentration (g / deciliter)

[0025]

Example 1 A polytrimethylene terephthalate having ηsp / c = 0.8 was spun at a temperature of 265 ° C. and a spinning speed of 1200 m.
/ Min to obtain an undrawn yarn, then hot roll temperature 60 ° C, hot plate temperature 140 ° C, draw ratio 3 times,
Stretched at a stretching speed of 800 m / min and 56dtex / 2
4f of a drawn yarn was obtained. The strength, elongation, elastic modulus and elastic recovery at 10% elongation of the drawn yarn were 3.4 cN / dt, respectively.
ex, 46%, 29.4 cN / dtex and 98%.

56 dtex / 24 obtained by the above method
f) of a non-twisted paste yarn of polytrimethylene terephthalate fiber of No. f into 84 dtex obtained by the same method as above.
The / 24f polytrimethylene terephthalate fiber yarn is false twisted at a false twist number of 3400 T / m (false twist coefficient 31162) using a pin type false twisting machine to obtain a non-set type false twisted yarn. Using a double twister DT-308 manufactured by Murata Machinery Co., Ltd., 700 T / m in the direction different from the false twist direction.
S / Z as a weft yarn alternately driven by twisting (twisting coefficient 6416) and steam setting at 80 ° C. for 40 minutes into a weft yarn 150 warp / inch, weft 89 / inch density 2
A green fabric with a / 2 weft ridge structure was obtained. Spread the obtained dough at 95 ° C with a U-shaped softer, spread and relax the spread, spread the heat at 160 ° C using a shrink surfer, and perform dry heat relaxation at 160 ° C. The lower fabric was used. The density of the obtained dough is 2
10 lines / inch, 96 lines / inch.

Next, the obtained woven fabric was printed by the overprinting method according to the following procedure, and the color development, chroma, and fastness performance of the obtained printed product were measured. The results are shown in Table 1. (1) Color paste adjustment Paste agent: Fine gum HT-6 (15%) 65 parts (Daiichi Kogyo Seiyaku Co., Ltd.) Dye: Dianix Red S-4G 4 parts (Dystar Co., Ltd., diffusion index 1.6) Reduction inhibitor: sodium chlorate 0.5 part Organic acid: tartaric acid 0.2 part Crescus MAS (manufactured by Nikko Giken) 2 parts (paraphenylphenol sodium salt) Water: 28.3 parts

(2) Printing and steaming Using the color paste of (1), a pattern is applied by a hand print method using a 100-mesh screen, dried at 80 ° C., and then subjected to a color forming process under the following temperature conditions. Was done. Superheated steam: 125, 130, 140, 150 ° C Saturated steam: Treated at 97, 100, 110 ° C for 30 minutes

(3) Washing with water, reduction washing, water washing, drying and finishing setting Wash thoroughly with water, completely remove the paste with hot water washing, perform reduction washing under the following conditions, wash with water, dry, and wash at 140 ° C. Finished by heat set. Reduction washing conditions: Thiourea dioxide 2 g / L Sodium hydroxide 1 g / L Nonionic surfactant 0.5 g / L Treated at 70 ° C. for 20 minutes

[0030]

Comparative Example 1 A color paste was prepared in the same manner as in Example 1 except that the carrier was not added to the color paste, and printing and drying were performed in the same manner as in Example 1. It was washed and finished. The color development, saturation, and color fastness of the resulting printed product were measured, and the results are shown in Table 1. From the results in Table 1,
The printed product according to Example 1 of the present invention has no difference in feeling and elasticity recovery from Comparative Example 1, but has high saturation and clear color,
It can be seen that the printed matter has high clarity even when judged by the naked eye, has high color fastness, has a sharp picture, and has high commercial value. On the other hand, the printed product of Comparative Example 1 has low color fastness, low chroma, and poor clarity.

[0031]

Comparative Example 2 The procedure of Example 1 was repeated except that polyethylene terephthalate fiber was used instead of polytrimethylene terephthalate fiber.
A woven fabric of weft ridge fabric was obtained. The obtained dough is Example 1.
A fabric under the print was prepared in the same manner as described above, printed and dried in the same manner, and steam-heat treated at 110 ° C. for 30 minutes with saturated steam, washed and finished. Color development of the resulting printed product,
The chroma and the color fastness were measured, and the results are shown in Table 1. The polyethylene terephthalate fiber printed product according to Comparative Example 2 is
Compared with Example 1, the printed product is lower in chroma, inferior in sharpness, lower in color fastness, harder in texture, and inferior in stretch recovery.

[0032]

[Table 1]

[0033]

Example 2 Polytrimethylene terephthalate having ηsp / c = 0.8 was spun at a temperature of 265 ° C. and a spinning speed of 1200 m.
/ Min to obtain an undrawn yarn, then hot roll temperature 60 ° C, hot plate temperature 140 ° C, draw ratio 3 times,
It is twisted at a stretching speed of 800 m / min and is 84 dtex / 3
A 6f drawn yarn was obtained. The strength, elongation, elastic modulus and elastic recovery at 10% elongation of the drawn yarn were 3.2 cN / dt, respectively.
ex, 45%, 29.1 cN / dtex and 97%. A smooth fabric was prepared from the obtained yarn by using a 32 gauge knitting machine. The resulting fabric had a course density of 45 / inch and a well density of 44 / inch. Next, the obtained knitted fabric is relaxed at 95 ° C., and then Uvit
ex EBF (250%) 30% at 95 ° C with 1% omf
After performing a fluorescent whitening treatment for minutes, washing with water and dehydrating, an intermediate setting at 150 ° C. was performed with a tenter to obtain a fabric under the print. The course density of the obtained knitted fabric was 49 / inch, and the well density was 54 / inch.

Next, the obtained knitted fabric is subjected to alkaline discharge printing according to the following procedure, and the color development, saturation, color fastness, and whiteness of the white printed portion of the obtained printed product are measured. Table 2 shows the results. (1) Pad for ground dyeing Dye: Dianix Orange SG 45 g / L (manufactured by Dystar, diffusion index: 1.7) Rebegal PEW 30 g / L (manufactured by Bayer, N-alkylphthalimide) Snow algin H 2 g / L ( (Fuji Chemical: sodium alginate) Citric acid 1g / L The above padding liquid composition was padded (95% squeezing rate)
Dried at 00 ° C.

(2) Discharge paste composition Original paste (DKS Fingham DP-70 20%) 60 parts (Daiichi Kogyo Seiyaku) Alkaline agent: Sodium hydroxide 8 parts Dye solubilization accelerator: Color Fine AD 7 parts (No. (Ichi Kogyo Seiyaku Co., Ltd.) 25 parts of water (3) Printing, steaming Using (2) discharge paste, using a 100-mesh screen, applying a pattern by hand printing, drying at 80 ° C, and then subjecting to the following temperature conditions Steam treatment. Superheated steam: 125, 130 ° C

(4) Washing with water, reduction washing, washing with water, drying and setting After steam setting, wash thoroughly with water, completely remove the paste with hot water washing, perform reduction washing under the following conditions, wash with water and dry. Finished with dry heat set at ℃. Reduction washing conditions: thiourea dioxide 2 g / L sodium hydroxide 1 g / L nonionic surfactant 0.5 g / L Treated at 70 ° C. for 20 minutes

[0037]

Comparative Example 3 In Example 2, the padding liquid composition was adjusted without adding a carrier agent, printed and dried in the same manner as in Example 2, and subjected to steaming heat treatment and washing at the temperatures shown in Table 2. Finished similarly. The color development, saturation, color fastness, and whiteness of the white area of the obtained printed product were measured, and the results were shown in Table 2.
Shown in From the results shown in Table 2, the printed product according to Example 2 of the present invention has high chroma, clear color, high clarity even when judged by the naked eye, and has a sharp picture and high commercial value. It can be seen that the product has been obtained. On the other hand, the printed product of Comparative Example 3 has low color fastness, low chroma, and poor clarity.

[0038]

[Table 2]

[0039]

Industrial Applicability According to the present invention, a polytrimethylene terephthalate fiber printing method which is free from dullness in color, has excellent clarity, and has excellent dyeing fastness, has a very high industrial value. A method for printing methylene terephthalate fibers can be provided.

Claims (3)

[Claims] 1. A method for printing a polytrimethylene terephthalate fiber, comprising using a carrier agent in the color paste in printing the polytrimethylene terephthalate fiber. 2. The printing of the polytrimethylene terephthalate fiber according to claim 1, wherein, after printing, the polytrimethylene terephthalate fiber is subjected to a heat treatment in superheated steam at 150 ° C. or less or saturated steam at 110 ° C. or less. Printing method. 3. The method for printing polytrimethylene terephthalate fiber according to claim 1, wherein the printing method is overprinting or discharge printing.