JP4443856B2 - Polyester fabric for pitting process - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polyester fabric for pitting processing.
[0002]
[Prior art]
Conventionally, so-called discharge processing is performed, in which after a paste containing a weight loss accelerator is printed on a fiber structure composed of polyester fibers having different solubility properties, one polyester fiber is partially dissolved to obtain a watermark pattern. Has been done.
[0003]
Although various investigations have been made on weight loss accelerators in pitting processing, fiber structures including fibers made of modified polyester polymers and fibers made of unmodified polyester polymers, and composite spun fibers of modified polyester polymers and unmodified polyester polymers When using a quaternary ammonium salt, which is a known weight loss accelerator, in the case of a fiber structure composed of, unmodified polyester fiber or unmodified polyester of composite fiber due to occurrence of dyeing spots, reduced workability due to foaming, alkali weight loss There is a problem that weight loss is promoted to the components and the strength of the fiber structure is reduced.
[0004]
For this reason, Patent Document 1 describes a fabric printed with a paste containing a polyhydric alcohol ethylene oxide adduct produced by adding 2 mol or more of ethylene oxide to polyhydric alcohol.
[0005]
[Patent Document 1]
JP-A-7-189117 [0006]
[Problems to be solved by the invention]
However, in this method, when the alkali weight loss time is short or the alkali concentration is low, the discharge due to the alkali weight loss tends to be insufficient. In addition, if the alkali concentration is high or the weight reduction time is lengthened in order to obtain a sharp watermark pattern after sufficient removal, the part that is not printed with the paste will also dissolve due to the alkali weight loss and the paste will be printed. It was difficult to obtain a sharp watermark pattern in which the target portion was dissolved.
[0007]
An object of the present invention is to solve the above-mentioned problems. The alkali of the polyester fiber in the portion where the paste is printed is compared with the alkali weight loss rate in the portion of the polyester fiber where the paste is not printed. An object of the present invention is to provide a polyester fabric for discharge processing that can obtain a sharp watermark pattern by significantly increasing the weight loss rate.
[0008]
[Means for Solving the Problems]
The gist of the present invention is a paste containing a polyhydric alcohol ethylene oxide adduct obtained by adding 2 mol or more of ethylene oxide to a polyhydric alcohol and a quaternary ammonium salt , wherein the polyhydric alcohol ethylene oxide adduct is 1 per 100 g of the paste. It is in the polyester fabric for the discharge process to which the glue which contains -50g and 0.5-10g of quaternary ammonium salt per 100g of glue adhered.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
It is necessary that the paste fabric containing the polyhydric alcohol ethylene oxide adduct in which 2 mol or more of ethylene oxide is added to the polyhydric alcohol and the quaternary ammonium salt are attached to the polyester fabric for discharge processing of the present invention.
[0010]
In the present invention, by using a paste that uses a polyhydric alcohol ethylene oxide adduct and a quaternary ammonium salt in combination, it is possible to promote weight reduction of the portion to which the paste is attached, and to obtain a sharp watermark pattern. .
[0011]
Examples of the polyhydric alcohol ethylene oxide adduct of the present invention include ethylene glycol, propylene glycol, hydrobenzoin, benzopinacol, dihydric alcohols such as cyclopentane-1,2-diol and cyclohexane-1,4-diol, and three such as glycerin. A product obtained by adding 2 mol or more of ethylene oxide to a monohydric alcohol is used.
[0012]
Examples of the polyhydric alcohol ethylene oxide adduct preferably used in the present invention include an ethylene oxide 5-30 mol adduct of ethylene glycol and an ethylene oxide 3-28 mol adduct of glycerin.
[0013]
The quaternary ammonium salt is not particularly limited as long as it has an effect of promoting alkali weight loss on the polyester fiber, but in particular, [RN (CH ₂ C ₆ H ₅ ) (CH ₂ CH ₂ O) mH) (CH ₂ CH ₂ O) nH)] ⁺ Cl ⁻ (wherein R is an alkyl group having 12 to 18 carbon atoms, m + n is a number contained between 2 and 30), one or more quaternary ammonium salts having a structural formula Is preferred. Moreover, when the value of m + n in the formula exceeds 30, the weight loss promoting effect tends to be weakened.
[0014]
In the present invention, the polyhydric alcohol ethylene oxide adduct contains 1 to 50 g, preferably 5 to 20 g, and quaternary ammonium salt is contained in an amount of 0.5 to 10 g, preferably 1 to 3 g, per 100 g of the paste. It is preferable that the agent adheres.
[0015]
If the polyhydric alcohol ethylene oxide adduct is less than 1 g per 100 g of glue, the weight loss promoting effect of the printed part is insufficient, the difference in weight loss between the unexposed part and the unexposed part is small, and it is difficult to obtain a sharp pattern. When the amount exceeds 50 g per 100 g of the agent, the polyhydric alcohol ethylene oxide adduct oozes out to the non-printing portion and the printing pattern becomes unclear.
[0016]
When the amount of the quaternary ammonium salt is less than 0.5 g per 100 g of the paste, the effect of the combined use with the polyhydric alcohol ethylene oxide adduct is insufficient, and it is difficult to obtain the intended sharp pattern.
[0017]
On the other hand, when the amount exceeds 10 g per 100 g of the sizing agent, foaming is likely to occur and workability is likely to deteriorate, and the strength of the fabric after the discharge processing is likely to be reduced.
[0018]
In addition, as a main component of the paste of this invention, wheat flour, tragacanth gum, locust bean gum, carboxymethylcellulose, polyvinyl alcohol, sodium polyacrylate, etc. are mentioned, You may use these individually or in mixture of 2 or more types.
[0019]
Furthermore, the polyester fabric for discharge processing according to the present invention may be a fabric containing polyester fibers, but the modified polyester fibers copolymerized with 1 to 15 mol% of the third component and the third component of 0.5 mol% or less. It is preferable to contain the unmodified polyester fiber in order to obtain a sharp watermark pattern by means of the discharging process.
[0020]
The modified polyester fiber is preferably a polyester fiber modified with a third component having an alkali metal sulfonic acid group, and polyethylene obtained by copolymerizing 5-sodiumsulfoisophthalic acid and an aliphatic dicarboxylic acid such as adipic acid or sebacic acid. Polyester fibers made of terephthalate, particularly preferably polyethylene terephthalate copolymerized with 1.5 to 4 mol% of 5-sodium sulfosophthalic acid and 3 to 13 mol of adipic acid can be mentioned.
[0021]
In addition, although the polyester fabric for a discharge process of this invention is obtained by adhering a paste agent by the arbitrary methods to the fabric containing a polyester-type fiber, the method by a printing is preferable. The printing can be arbitrarily performed by any known method, such as partial printing of a pattern or the like, or printing of the entire surface.
[0022]
Examples of the printing method include flat screen printing, rotary screen printing, roller printing, bigo printing, and ink jet printing.
[0023]
The polyester fabric for removal processing according to the present invention can be treated with an aqueous alkali solution after heat treatment to preferentially reduce the amount of alkali on the portion to which the paste has adhered, thereby obtaining a sharp watermark pattern.
[0024]
The heat treatment temperature needs to be 100 to 200 ° C. If the heat treatment temperature is less than 100 ° C., the weight loss accelerator is not impregnated in the modified polyester, and the weight loss promoting effect is insufficient and a sharp pattern cannot be obtained, and if it exceeds 200 ° C., the texture of the polyester is cured.
[0025]
The heat treatment is performed by dry heat or wet heat, and preferably 30 seconds to 5 minutes for dry heat and 30 seconds to 30 minutes for wet heat.
[0026]
As the alkaline aqueous solution, an aqueous solution of an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, or an alkaline earth metal hydroxide such as magnesium hydroxide or calcium hydroxide is used. If necessary, triethanolamine, diethanolamine, mono An amine such as ethanolamine may be used in combination.
[0027]
The weight loss conditions with the aqueous alkali solution vary depending on the polymer composition and variety of the polyester fiber, but in the case of the aqueous sodium hydroxide solution, the concentration is 0.3 to 3% by mass, preferably 1.5% by mass or less. The temperature is 80 to 130 ° C., preferably 90 to 105 ° C., and the bath ratio is 1: 5 or more, preferably 1:30 or more.
[0028]
【Example】
Hereinafter, the present invention will be described specifically by way of examples.
[0029]
Example 1
As a modified polyester fiber, an 84 dtex / 48 f triangular section yarn made of a copolymer of 2.25 mol% 5-Na sulfoisophthalic acid and 5 mol% adipic acid was subjected to normal false twisting at a false twist temperature of 160 ° C. As a non-modified polyester fiber, a 22 dtex / 1f round cross-section yarn made only of polyethylene terephthalate was prepared.
[0030]
The unmodified polyester fiber is used alone for the warp, and the weft yarn is obtained by twisting the modified polyester fiber and the unmodified polyester fiber at a twist number of 120 T / M, and the warp density is 120 yarns / 吋 and the weft density is 115 yarns. / A plain weave fabric was created.
[0031]
The following plain fabric is printed with the following paste containing a polyhydric alcohol ethylene oxide adduct obtained by adding 2 mol or more of ethylene oxide to a polyhydric alcohol and a quaternary ammonium salt. A fabric was obtained.
[0032]
The resulting polyester fabric for removal processing was dried at 110 ° C. for 2 minutes and then heat-treated in a dry heat atmosphere at a temperature of 190 ° C. for 2 minutes, and then a 1% aqueous solution of sodium hydroxide with a bath ratio of 1:50, 100 ° C. For 45 minutes, washed, neutralized and dried by a conventional method.
[0033]
In the obtained printed portion of the paste of the plain woven fabric, the modified polyester fiber was completely dissolved and removed by alkali treatment, and a discharge-treated fabric having an extremely sharp watermark pattern at the time of molding was obtained.
[0034]
10 mole adduct ... 10 parts by weight of sizing agent glycerin ethylene oxide _{[C 12 H 25 N (CH} 2 C 6 H 5) (CH 2 CH 2 O) mH) (CH 2 CH 2 O) nH)] + Cl - (Mixed product of m + n = 2-8) ... 2.5 parts by weight Fine Gum G17 (Dye made by Daiichi Kogyo Seiyaku Co., Ltd.) ... 6 parts by weight Water ... 81.5 parts by weight ( Comparative Example 1)
Except for using the paste containing no quaternary ammonium salt as described below, a polyester fabric for removal processing was obtained and subjected to removal processing in the same manner as in Example 1.
[0035]
In the obtained plain woven fabric, the modified polyester fiber in the printing part of the paste was not completely removed, and a sharp watermark pattern was not obtained.
[0036]
Adhesive paste glycerin ethylene oxide 10 mol adduct: 10 parts by weight Fine Gum G17 (paste agent manufactured by Daiichi Kogyo Seiyaku Co., Ltd.): 6 parts by weight Water: 84 parts by weight
【The invention's effect】
A sharp watermark pattern can be obtained from the polyester fabric for removal processing of the present invention by the removal processing by alkali weight loss.

Claims (2)

A paste containing a polyhydric alcohol ethylene oxide adduct obtained by adding 2 moles or more of ethylene oxide to a polyhydric alcohol and a quaternary ammonium salt , wherein the polyhydric alcohol ethylene oxide adduct is added in an amount of 1 to 50 g per 100 g of the paste. A polyester fabric for discharge processing to which a paste containing 0.5 to 10 g of ammonium salt per 100 g of paste is attached. The polyester fabric for discharging according to claim 1, wherein the polyester fabric is a fabric comprising polyester fibers modified with a third component having an alkali metal sulfonic acid group and unmodified polyester fibers.