JPS59112082A - Simultaneous dyeing of both surfaces of polyester fiber structure - 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 printing a polyester fiber structure and dyeing not only the printed surface but also the back surface of the polyester fiber structure in the same color.

Generally, when printing on a polyester fiber structure, only the printed side is dyed, and the dyeing on the printed side is visible through the back side, and the back side is not printed simultaneously. If the fiber density of a polyester fiber structure is extremely low, depending on the viscosity of the printing paste, the printing paste may penetrate into the back side through the gaps between the fibers, resulting in simultaneous printing, or rather, the printing paste may penetrate into the back side through the gaps between the fibers. It is not possible to uniformly print both the front and back sides of the textile structure at the same time.

The present invention provides a method for simultaneously printing both the front and back sides of a polyester fiber structure, particularly a high-density polyester fiber structure, and eliminates the phenomenon that printing paste penetrates into the back surface and stains the back surface in conventional printing. Focusing on this, the present invention attempts to simultaneously print both the front and back surfaces of a polyester fiber structure by actively promoting the penetration of the printing paste into the back surface. That is, the present invention is ``a method for dyeing a polyester fiber structure, which is characterized in that the polyester fiber structure is pretreated with a hydrophilic agent, and then printed in the presence of a hydrophilic level dye penetrant.'' Here, polyester fibers are polycondensed fibers of glycol components such as ethylene glycol, trimethine glycol, 1,4-ztanediol, and tetramethylene glycol, and dicarboxylic acid components such as terephthalic acid, inphthalic acid, malonic acid, and succinic acid. These include polyester copolymers copolymerized with other third components as a part of glycol component or dicarboxylic component, or fibers made of blends of these polyester polymers and other polymers, but polyethylene Preferably, Tele7 tallate fibers are used. Fiber structures are knitted fabrics.

For clothing such as non-woven fabrics, and for industrial 1-inch rears.

Fibers other than polyester fibers, such as natural fibers and semi-synthetic fibers, which refer to fiber structures for sports and leisure use, as long as they do not impair the purpose of the present invention.

It may be a fiber structure made of synthetic fibers such as on-fin polyamide fibers that are blended, blended, or interlaced. In particular, in the case of high-density fiber structures, the single yarn denier is 0.5 to 50 deniers and the fineness is 7o to so.

The method of the present invention can also be used for a fiber structure having a denier and a weave density corresponding to a plain weave fabric of 50 to 200 fibers/inch in both the warp and weft directions.

The hydrophilic resin film in the present invention is not particularly limited as long as it exhibits hydrophilicity, but polyether Particularly preferred are coatings made of polyether-based resins. Examples of such polyether-based resins include polyether-polyester block copolymers and vinyl polymers containing polyether segments. Such polyether-polyester block copolymers For the combination, a polyether polyester block copolymer consisting of terephthalic acid and/or isophthalic acid, alkylene glycol and polyoxyalkylene glycol is preferred, such as terephthalic acid-fulkylene glycol-polyoxyalkylene glycol, terephthalic acid-inphthalic acid. -Fulquin glycol -rupolyoxyalkylene glycol, terefucuric acid-7-rukylene glycol; -ruho, lyoxyfulquin glycol 7/ether, terephthalic acid-isophthalic acid-fulkylene glycol-polyoxyalkylene glycol 7-ether, etc. Examples of block copolymers include block copolymers, and preferred terephthalate units: isophthalate units = 100:O to so:so (molar ratio), especially terephthalate units: isophthalate units = 90:1 OP. -50:50 (molar ratio) is particularly preferred. Also, in the Prusk copolymer, it is usually preferable that the ratio of terephthalate unit, isophthalate unit: polyoxyalkylene glycol unit = 1 to 15:1 is used for producing the block copolymer. Alkylene glycols have 2 to 10 carbon atoms, such as ethylene glycol, propylene glycol, tetramethine glycol, decamethylene glycol, etc.
of fullkylene glycol, and polyoxyalkylene glycol usually has an average molecular weight of 400 to IQOOOO.
1 Preferably, polyethylene glycol, polyethylene glycol/polybutylene glycol copolymer, polyethylene glycol/polytetramethylene glycol copolymer having an average molecular weight of 600 to 6,000.

In addition to polypropylene glycol, monomethyl ether, monoethyl ether, monophenyl ether, etc., such as polyethylene glycol and polypropylene glycol, are included.

In addition, the average molecular weight of the Prusk copolymer depends on the molecular weight of the polyoxyalkylene glycol used, but it is usually 2.
,000~20,000. Preferably 3,000 to 10
,000.

The above polyether segment-containing vinyl polymer is
For example, the general formula % formula % C 几=C-C+Oc, H4) a period C, le) b publication pay = C
It is a polymer obtained only by polymerizing vinyl monomers of polyoxyfulkylene glycol having two or more acrylic or methacrylic groups in one molecule on fibers as shown in Lumyl 10&. Preferred specific examples of vinyl monomers include CH,=C-C(-QC,H,), -0-C-C=C
&CH,=CC+OC,H4),,(-OC,H,)
, -()-C-C-CHt, and the like.

It is not necessary to employ any special method to form the hydrophilic resin film (conventionally known dipping method, band method, band steam method, spray method, radical polymerization method, ultraviolet polymerization method, radiation polymerization method) , electron beam polymerization, plasma polymerization, etc. are optionally used.As a preferred method for applying the polyether polyester Gronk copolymer, for example, the polyether polyester Gronk copolymer is prepared as a dispersion or solution, and the necessary The base polyester fibers are immersed in a treatment solution prepared by adding surfactants, salts, pH adjusters, etc. according to the conditions, and the treatment solution is heated to raise the temperature, resulting in fine aggregation of the Plutz copolymer. Examples include a method in which particles are formed and adhered uniformly to fibers, a method in which a dispersion or solution of the basic polyester fiber K7'q ivy copolymer is applied and then heat-treated. Examples of the dispersion medium or solvent for copolymerization include liquid paraffin, 2ρ form, benzyl alcohol, and methanol.

Although non-aqueous media such as acetone, dioxane, etc. can also be used, water is most preferably used.

Further, as a preferable method for applying the polyether segment-containing vinyl monomer, for example, a polymerization initiator such as ammonium persulfate, potassium persulfate, hydrogen peroxide, or benzoyl peroxide is added to an aqueous solution of the polyether segment-containing vinyl monomer. Examples include a method in which the aqueous solution is added to the fibers and heated and polymerized on the fibers, and a method in which an aqueous solution is attached to the fibers and then heated in heated steam.

The amount of the above 1-dah hydrophilic resin attached to the fiber is 0.05
A suitable range is 7.0% by weight. If the resin content is less than 0.05% by weight of the fibers, it will be difficult to form a uniform film on the fibers, and if it exceeds 7.0% by weight, the fibers will have a hard feel (which is not desirable in terms of quality).

As a hydrophilic leveling dye penetrant, one stone of higher alcohol sulfate ester salt is used to promote the penetration of printing paste into the fabric to be printed;
Anionic surfactants such as Sun or sorbitan,
Polyhydric alcohol-based fatty acid esters such as pentaerythritol.

A nonionic surfactant such as an ethylene oxide addition condensate of bisphenol A (number of added moles of 10 to 20) can be used. Alternatively, a mixture of a 7-ion type such as q-) oil and a 7-ion type such as a fullylene oxide addition condensate of bisphenol at a ratio of 50150 may be used. Next, since printing is carried out using a relatively small bath ratio, it is also preferable to use ethylene glycol, thiodiethylene glycol, cellosolve, etc. in combination to promote dye dissolution. Furthermore, in order to promote deep color dyeing, a combination of polyalkylene ester and lower fatty acid may be used in combination. As the printing method, conventionally known methods may be used, such as hand printing, two-machine roll printing, p
- Any method such as tally printing may be used.

The present invention will be specifically illustrated by Examples below.

Note that in the examples, ``chi'' is a weight crack.

Example: Polyethylene temphtanate fibers with a warp direction fineness of 125 denier and 24 filaments, a weft direction fineness of 250 tenier and 48 filaments, and a warp direction of 110 fibers/'inch.
A high-density fabric was obtained by weaving at a weave density of 71 threads/inch in the weft direction. Add 2 f/l of soda ash to the fabric and Noigun BS2? /
It was immersed in an aqueous solution of Ff at a temperature of 80°C for 2 minutes continuously.
! After kneading, the mixture was washed and then heat set at 200°C for 45 seconds. After that, water processing agent 5R-1' (
100 (SR processing agent: Takamatsu Yushi@Product) with 4% O
After hydrophilic treatment with WS, mechanical roll printing was performed using a printing paste having the following composition.

Printing paste composition dye Sumikaron Blue S
3RF 2% level dyeing penetrant: Neotex F
S (Nichika Sangyo ■) 9b Level dyeing agent: Senkanol CN (Japan Tohoku@) 2% Deep coloring aid: Sabol FA-19 (Sanyo Kasei@), 1
．． 5 Polyglue ° Snowgin TSSL (10th section) (Fuji Chemical @) 35φ Water
53.5 ≠ After printing, use HT-steamer (・
, Steam coloring was carried out at 180°C for 5 minutes (・, then 21/L, /'Idp Sulfide 2 ?/L)
, Sunmoor FL (manufactured by Nichika Sangyo ■, 7ionic surfactant) 2 y/L aqueous solution was used at 1°C at a temperature of 0°C.
It was noped for a minute and then dried at a temperature of 120°C for 1 minute. The resulting treated fabric M-3 (melamine-formaldehyde resin manufactured by Sumitomo Chemical) 250 t/L, ACX
(Amine catalyst: manufactured by Sumitomo Chemical) 2 s t / t
After being impregnated with an aqueous solution consisting of L
A resin-processed product of high-density polyester fabric was obtained. The polyester fiber dyed structure printed by the method of the present invention is
Traditionally, only one side of the fabric is printed (in B), both the front and back sides of the fabric are dyed uniformly and at the same density. Ta.

Patent applicant Teijin Ltd.

Claims (1)

[Claims] A method for simultaneously dyeing the front and back sides of a polyester fiber structure, characterized in that the polyester fiber structure is pretreated with a hydrophilic agent and then printed in the coexistence of a hydrophilic level dye penetrant.