JP2008533320A - Dyeing with light fastness on bicomponent fiber - Google Patents

Abstract

  A method for improving the light fastness of a dyed product on a multicomponent fiber composed of a thermodynamically compatible polyolefin and polyamide using a disperse dye, the multicomponent fiber comprising a benzotriazole derivative A method is disclosed that is processed using

Description

  The present invention relates to a method for dyeing a multicomponent fiber, in particular, a method for dyeing a bicomponent fiber and a ternary fiber, and the dyed product is particularly excellent in light fastness. The invention also relates to multicomponent fibers having light fastness dyed by them.

  Unmodified polyolefin fibers, in particular polypropylene (PP) fibers, can only be dyed with ordinary disperse dyes in an extremely pearl shade, which has a very low fastness. Prior art means for improving dyeability include, on the one hand, chemically modifying polyolefin fibers (especially polypropylene (PP) fibers) and, on the other hand, modified or newly synthesized. Use of dyes is included.

  Japanese Patent Publication No. 10-331034 discloses heat resistance and weather resistance of the fiber itself by containing a certain amount of phenolic antioxidant in the core component and a certain amount of benzotriazole ultraviolet absorber in the sheath component. The present invention relates to a fiber suitable for textiles with improved properties and having excellent moisture absorption and moisture release properties. Nothing is disclosed about lightfast dyeing for bicomponent fibers.

  EP 445076 discloses a stable dispersion of a benzotriazole-based ultraviolet (U.V.) absorber utilizing a lignin sulfonate modified as a dispersant, a benzotriazole-based U.V. V. A method of dispersing the absorbent, a method of protecting the textile using the stable dispersion, and any undispersed U.S. V. It relates to textiles that have been treated with a stable dispersion by filtering the absorbent and avoiding precipitation. Nothing is disclosed about lightfast dyeing for bicomponent fibers.

EP 474595 relates to stable aqueous dispersions of benzotriazole compounds which absorb UV, which dispersions are light fastnesses of dyeings on synthetic fibers, in particular polyester fibers or acid-modified polyester fibers. It is an excellent composition for improving. However, nothing is disclosed about light fast dyeing for bicomponent fibers.
U.S. Pat. No. 5,212,287 relates to polyamide fibers having an affinity for acidic and basic dyes, blends between the fibers, and methods for photochemical and thermal stabilization of the blends of the fibers and other fibers. However, nothing is disclosed about light fast dyeing for bicomponent fibers.

  When the dyeing is further treated (especially with benzotriazole derivatives) with suitable process control and suitable dispersions of dyes that can also be used for dyeing polyester fibers It is clear that good light fast dyeing results are obtained.

  A multi-component fiber dyeing using a disperse dye (especially relating to a two-component fiber dyeing composed of a thermodynamically compatible polyolefin and polyamide) It was found to have high light fastness when treated with benzotriazole derivatives.

The present invention also relates to a multicomponent fiber having light fastness dyed by the method of the present invention.
The present invention also provides benzotriazole for improving the light fastness of dyed multicomponent fibers (especially for dyed bicomponent fibers composed of thermodynamically compatible polyolefins and polyamides). It relates to the use of derivatives.

  Multi-component fibers according to the present invention are side-by-side fibers (two or more polymers are parallel and bonded together without blending and becoming different fibers). , And form a single fiber), seascore fiber (the first polymer comprises the core portion, and the second polymer forms a sheath around the first polymer, and optionally further polymers) Form the inner core and a sheath around the sheath structure), or islands-in-a-sea fibers (multiple core portions of the first polymer surrounded by the second sheath polymer) Is). The seascore fiber and sea-island fiber are preferable multicomponent fibers, but the seascore fiber is a more preferable fiber. In a preferred seascore fiber, the sheath is disposed concentrically around the core portion.

  Preferred multicomponent fibers (especially bicomponent fibers) consist of thermodynamically compatible polyolefins and polyamides, in particular polypropylene, modified polyamides (PA) and polyamides. Preferred multicomponent fibers, or more precisely, bicomponent fibers, have polyfilamentary characteristics.

  Further preferred multicomponent fibers (especially bicomponent fibers) consist of a core of a kind of polymer (preferably polyamide) covered by another polymer (preferably polyolefin). Fibers composed of thermodynamically compatible polypropylene and polyamide (especially polypropylene and nylon 6 (PP / N6)) have a thin filament of one polymer (preferably polyamide) and other polymers (preferably Is produced by a general spinning method so as to be formed in a matrix of polyolefin). When two kinds of melts are simultaneously supplied to the spout tube mouth, a two-component filament is obtained. A spit tube having two concentric holes produces sea core filaments (bicomponent sea core fibers) from the two melts.

To improve the adhesion between PA and PP, ionomer (TM), maleic anhydride or polyester can be utilized. These agents for improving the compatibility between the various components can be present in an amount of up to 10% by weight, with 3-8% being preferred.
Preferred multicomponent fibers (especially bicomponent fibers) according to the present invention dye one component of the multicomponent fibers or bicomponent fibers and apply the benzotriazole derivative to these other parts. The dye and the benzotriazole derivative are not arranged in the same component of the multicomponent fiber.

  Preferred multicomponent fibers (particularly bicomponent fibers) according to the present invention dye the multicomponent fiber or the core portion of the bicomponent fiber and apply the benzotriazole derivative to the sheath portion. Preferred multicomponent fibers according to the present invention are bicomponent fibers.

（式中、
Ｒ₁は、ハロゲン原子であり，
Ｒ₂は、Ｃ₁〜Ｃ₆のアルキルであり、そして
Ｒ₃は、Ｃ₁〜Ｃ₆のアルキルである）。
Ｒ₃は、分岐したＣ₃〜Ｃ₆のヒドロカルビル基であることが好ましい。 Preferred benzotriazole derivatives are benzotriazole derivatives of the following formula (I):

(Where
R ₁ is a halogen atom;
R ₂ is C ₁ -C ₆ alkyl and R ₃ is C ₁ -C ₆ alkyl).
R ₃ is preferably a branched C _{3 to} C ₆ hydrocarbyl group.

In preferred benzotriazoles of formula (I):
R ₁ is chlorine or fluorine,
R ₂ is methyl, ethyl or propyl and R ₃ is methyl, ethyl or propyl, isopropyl or tertiary butyl.

（式中、
Ｒ₁は、ハロゲン原子であり、
Ｒ₂は、Ｃ₁〜Ｃ₆のアルキルであり、そして
Ｒ₃は、Ｃ₁〜Ｃ₆のアルキルである）。 Particularly preferred benzotriazoles of the formula (I) have the following formula (I ′):

(Where
R ₁ is a halogen atom;
R ₂ is C ₁ -C ₆ alkyl and R ₃ is C ₁ -C ₆ alkyl).

In preferred benzotriazoles of formula (I ′):
R ₁ is chlorine or fluorine,
R ₂ is methyl, ethyl or propyl, and R ₃ is methyl, ethyl or propyl, isopropyl, tertiary butyl.

Particular preference is given to benzotriazole derivatives of the formula (I ′) in which R ₁ is chlorine, R ₂ is methyl and R ₃ is tertiary butyl.
The benzotriazole derivative is 0.01 to 20% by weight, preferably 0.01 to 15% by weight, in particular 0.1 to 15%, based on the dry material in the method of the present invention. Used in an amount of 0.1% to 10% by weight, in particular based on the dry material in the process of the invention.

The treatment with the benzotriazole derivative can be performed after dyeing or simultaneously with dyeing. Dyeing for the purposes of the present invention includes printing.
The disperse dyes for the process of the present invention are customarily used for dyeing polyester materials, but are also disperse dyes having high light fastness on polyamides.

（式中、Ｒ₄及びＲ’₄は、独立して、フェニル基か、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基である）。 Preferred disperse dyes for the process of the present invention have the following formula (1):

(Wherein R ₄ and R ′ ₄ are independently a phenyl group, or halogen (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or a phenyl group substituted by -OH).

（式中、Ｒ₅、Ｒ’₅及びＲ”₅は、独立して、ハロゲン（特に、−Ｃｌ又は−Ｂｒ）、フェニル基、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基である）。 Further preferred disperse dyes for the process of the invention are disperse dyes having the following formula (2), (3) or (4):

Wherein R ₅ , R ′ ₅ and R ″ ₅ are independently halogen (particularly —Cl or —Br), a phenyl group, or halogen (particularly —Cl or —Br), —CH ₃ , -CH ₂ CH _3, -OCH _3, a phenyl group substituted by -OCH ₂ CH ₃ or -OH).

（式中、
Ｒ₆は、ハロゲン（特に、−Ｃｌ又は−Ｂｒ）、フェニル基、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基、あるいはフェニル基、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェノキシ基であり、
Ｒ₇は、フェニル基、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基であり、
Ｒ₈は、−ＮＨ₂又は−ＮＨＲ₉であり、ここでＲ₉は、ハロゲン（特に、−Ｃｌ又は−Ｂｒ）、フェニル基、若しくはハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基、又はフェニル基若しくはハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェノキシ基であるか、あるいはＲ₉は、式ＳＯ₂−フェニルの基であり、ここで当該ＳＯ₂−フェニル基のフェニル基は、置換されていないか、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基であるか、又はハロゲン（特に、−Ｃｌ又は−Ｂｒ）、−ＣＨ₃、−ＣＨ₂ＣＨ₃、−ＯＣＨ₃、−ＯＣＨ₂ＣＨ₃若しくは−ＯＨにより置換されたフェニル基である。） Further preferred disperse dyes for the process of the invention are disperse dyes having the following formula (5):

(Where
R ₆ represents halogen (particularly —Cl or —Br), a phenyl group, or halogen (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or A phenyl group substituted by —OH, or a phenyl group, or a halogen group (in particular —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH; A phenoxy group
R ₇ is a phenyl group or a phenyl group substituted by halogen (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH;
R ₈ is —NH ₂ or —NHR ₉ , wherein R ₉ is a halogen (particularly —Cl or —Br), a phenyl group, or a halogen (particularly —Cl or —Br), —CH ₃ , -CH ₂ CH _3, -OCH _3, phenyl substituted by -OCH ₂ CH ₃ or -OH, or a phenyl group or halogen (in particular, -Cl or _{-Br), - CH 3, -CH} 2 CH 3, Or a phenoxy group substituted by —OCH ₃ , —OCH ₂ CH ₃ or —OH, or R ₉ is a group of the formula SO ₂ -phenyl, where the phenyl group of the SO ₂ -phenyl group is unsubstituted or substituted, or halogen (in particular, -Cl or _{-Br), - CH 3, -CH} 2 CH 3, -OCH 3, or a phenyl group substituted by -OCH ₂ CH ₃ or -OH, Or halogen ( In particular, -Cl or _{-Br), - CH 3, -CH} 2 CH 3, -OCH 3, a phenyl group substituted by -OCH ₂ CH ₃ or -OH. )

（式中、
Ｒ₁₀は、Ｈ又はハロゲン、特に−Ｈ、−Ｃｌ又は−Ｂｒである）。 Further preferred disperse dyes for the process of the present invention are disperse dyes having the following formula (6):

(Where
R ₁₀ is H or halogen, in particular —H, —Cl or —Br).

Disperse dyes of formula (1), (2), (3), (4), (5) or (6) which are particularly suitable for the process of the invention are C.I. I. Disperse Orange 41 and / or C.I. I. Disperse Orange 41: 1 and / or C.I. I. Disperse Violet 36 and / or C.I. I. Solvent Yellow 163 and / or C.I. I. Disperse Blue 73 and / or C.I. I. Disperse Blue 56 and / or C.I. I. Disperse Red 86 and / or C.I. I. Disperse Red 60 and / or C.I. I. Disperse Violet 27 and / or C.I. I. Disperse Yellow 64 and / or C.I. I. Disperse Yellow 54.
These dyes of the formula (1), (2), (3), (4), (5) or (6) can be used alone or 1 of the disperse dyes mentioned above in the process of the invention. It can be used as a mixture containing seeds.

  The dyeing or printing in the method of the present invention is carried out according to a method known per se, for example, the method described in French Patent No. 1 445 371. Conventional dyeing methods, whereby the method of the invention can be dyed and / or printed with disperse dyes, are also described, for example, in M.M. Peter and H.C. K. Rouette's “Grundage der Textilveredelung; Handbuch der Technologie, Verfahren und Machinen”, 77-N-4, Gr. Pages 460-461, 482-495, 556-566 and 574-587). Matte and carpet possibilities include continuous dyeing or batch dyeing, and non-contact dyeing or spraying of dyes or dye blends by traditional printing or ChromoJet methods, or other methods (M. Peter and HK). .Rouette "Grundlagen der Textilveredelung; Handbuch der Technologie, Veriahren und Maschinen" thirteenth, revised edition, 1989, Deutscher Fachverlag GmbH, Frankfurt / Main, Germany, ISBN 3-87150-277-4, pages 484~492 (chapter 7.221 .1) and page 846 and figure 8.70) included.

The resulting dyeings have a good overall fastness; in particular light fastness, heat-set fastness and pleating fastness, and also excellent wetting after heat stabilization (heat transfer fastness) Mention may be made of fastness, in particular high light fastness.
The fiber material can exist in various processing forms, for example as fibers, yarns or webs, as woven or looped knitted fabrics or carpets. These textiles are used in the automotive field or in general transportation engineering, for example in railways, airplanes and / or trams, in the technology of the constructed structure, or more precisely in the constructed structure. Alternatively, and / or has found utility in the leisure field.

The disperse dye is applied onto the fiber material by a known dyeing method. For example, an aqueous dispersion of a polyolefin-polyamide multicomponent fiber or a bicomponent fiber material at a temperature of 70 to 140 ° C. with or without a conventional carrier and in the presence of an anionic or nonionic dispersant Exhaust staining.
The polyolefin-polyamide fiber material is preferably dyed at a pH of 3-7, and especially 3-6. The dyeing temperature is preferably in the range from 70 to 110 ° C and in particular in the range from 80 to 105 ° C.

  The bath ratio depends on the equipment, the substrate and the make-up form. However, the bath ratio can be selected over a wide range, for example 4: 1 to 100: 1, and preferably 5: 1 to 30: 1. The disperse dyes used in accordance with the invention can be used in conventional dyeing methods, for example in exhaust methods, in continuous methods, in printing methods, or in non-impact printing methods, for example in ink jet or spray pressure / CromoJet (especially suitable for carpets) Can be applied.

The disperse dyes used according to the invention are also suitable for dyeing from low bath ratios, for example in continuous dyeing or batch foam dyeing and continuous foam dyeing.
Dyeing liquids or printing pastes with added water and the above dyes are additional additives such as wetting agents, antifoaming agents, leveling agents or agents that affect the properties of the textile material, such as fabric softeners, flame retardants Or it can contain stain and water repellents, water and oil repellents and water softeners and natural or synthetic thickeners (eg, alginate and cellulose ethers).

  The amount of disperse dye used in the dyebath or printing paste can vary over a wide range, depending on the desired color depth. The advantageous amounts are generally from 0.01% to 15% by weight (0.001% to 20% by weight) and in particular from 0.1% to 10% by weight, based on the weight of the fiber and the printing paste, respectively. Can range.

The various dyeing and printing methods for carpet are preferably carried out as follows.
For a continuous process, prepare a liquid of the following composition:
0.001 to 30 g / L of disperse dye;
1-15 g / L thickener,
For example, Polyprint M225, polysaccharide, guar, tamarind;
0.1-10 g / L of wetting agent and anti-frost agent,
For example, Sandogen WAF liq. , Sandogen AFB liq. ;
0.1 to 10 g / L acid donor,
For example, Sandacid VS liq. , Sandacid VAN liq. ;
0.1-10 g / L buffer system,
For example, Sandacid PB liq. Sandacid PBBK Liq. :
0.1-30 g / L of a benzotriazole derivative of formula (I).

  The material to be dyed is pad-padded in a pad-mangle to an impregnation rate of 100-600% (preferably 400%) and at about 102 ° C. for 2-20 minutes (preferably 8 minutes) can be fixed in hot saturated steam, or can be fixed using dry heating or superheated steam for the above time. The material is then rinsed with cold water and, if appropriate, further processed or processed in a manner conventional in the art.

Prepare a liquid of the following composition for the exhaust process:
0.001 to 20% disperse dye;
0.1-10 ml / L dispersant,
For example, Lyocol RDN liq. Lyocol OU Liq. ;
0.1 to 5 g / L ammonium sulfate:
0.1-30 g / L of the benzotriazole derivative of formula (I).

  The pH is adjusted to a value of 3-7, and preferably 4.5-6. It is dried at 70-140 ° C. for 30-90 minutes, then rinsed with water and, where appropriate, further processed or processed in a manner conventional in the art.

Prepare a printing paste of the following composition for non-impact printing:
0.001 to 30 g / kg of disperse dye;
2-20 g / kg synthetic thickener,
For example, Tanaprint ST 160, Prislon 200, Texipol 675031;
0.1-10 g / kg dispersant, wetting agent, anti-frost agent,
For example, Sandogen WAF liq. , Sandogen AFB liq. Tanaspers CF liq. ;
An acid for pH adjustment of 0.1 to 10 g / kg,
For example, citric acid;
0.1-10 g / kg antifoaming agent,
For example, Noform 1125 liq. Antimussol UP liq. Antimussol SF liq. :
0.1-30 g / L of the benzotriazole derivative of formula (I).

  In the non-impact printing method, the material to be printed is sprayed with the printing paste to an impregnation rate of 100 to 600% (preferably 300%), based on the dry weight of the material to be printed, and about It can be fixed in hot saturated steam at 102 ° C. for 2 to 20 minutes (preferably 8 minutes), or dry heated or superheated steam can be used to fix. The material is then rinsed with cold water and, where appropriate, further processed or processed in a manner conventional in the art.

Further processing or further processing operations customary in the industry can include application of fluorinated chemicals, other stain and / or water repellent chemicals, and / or carpet backing.
The following examples illustrate the invention. Percentages are by weight unless otherwise stated.

  Examples of staining are Aquafil Textile Yarns S. et al. p. A. , Via Palma, 45, IT-4604 l Asola-Mantova (Italy) bicomponent fibers (PP / PA) were used.

Example 1 (not according to the invention)
A small piece of carpet is treated with 0.25 g / L C.I. I. Solvent Yellow 163, 0.06 g / L C.I. I. Disperse Red 86 and 0.009 g / L C.I. I. Disperse Blue 73, 100 g / L Polyprint M225 3.5% solution, 3 g / L Sandogen WAF liq. 2 g / L Sandacid VS liq. And sufficient Sandacid PB liq. Padded with a padder in a bath (pH 5) containing up to 400% impregnation (based on dry weight) and so impregnated carpet pieces at 8O 0 C in hot saturated steam at 8O 0 C. Allowed to settle for minutes and then washed with cold water. A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

の化合物の１０％懸濁液５ｇ／Ｌをさらに含んでいた。
当該カーペット片に、ベージュの染色を得た。そのようにして得たカーペット片を、耐光堅牢度に関して試験した（本明細書の下記を参照のこと）。 Example 2 (not according to the invention)
A piece of carpet was dyed as in Example 1, but the bath had the following formula:

And 5 g / L of a 10% suspension of the above compound.
A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

の化合物の２５％懸濁液５ｇ／Ｌをさらに含んでいた。
当該カーペット片上に、ベージュの染色を得た。そのようにして得たカーペット片を、耐光堅牢度に関して試験した（本明細書の下記を参照のこと）。 Example 3
A piece of carpet was dyed as in Example 1, but the bath had the following formula:

And 5 g / L of a 25% suspension of the above compound.
A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

の化合物の２０％懸濁液５ｇ／Ｌをさらに含んでいた。
当該カーペット片上に、ベージュの染色を得た。そのようにして得たカーペット片を、耐光堅牢度に関して試験した（本明細書の下記を参照のこと）。 Example 4 (not according to the invention)
A piece of carpet was dyed as in Example 1, but the bath had the following formula:

5 g / L of a 20% suspension of the above compound.
A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

の化合物３５部と、次の式：

の化合物３５部との懸濁液５ｇ／Ｌをさらに含んでいた。
当該カーペット片上に、ベージュの染色を得た。そのようにして得たカーペット片を、耐光堅牢度に関して試験した（本明細書の下記を参照のこと）。 Example 5 (not according to the invention)
A piece of carpet was dyed as in Example 1, but the bath had the following formula:

35 parts of the compound of the formula:

And 5 g / L of a suspension with 35 parts of the above compound.
A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

の化合物の１０％の懸濁液５ｇ／Ｌをさらに含んでいた。
当該カーペット片上に、ベージュの染色を得た。そのようにして得たカーペット片を、耐光堅牢度に関して試験した（本明細書の下記を参照のこと）。 Example 6 (not according to the invention)
A piece of carpet was dyed as in Example 1, but the bath had the following formula:

And 5 g / L of a 10% suspension of the above compound.
A beige dyeing was obtained on the carpet piece. The carpet pieces so obtained were tested for light fastness (see herein below).

Measurement of light fastness of Examples 1-7 The light fastness was measured according to ISO 105 Method 2. A sample of the piece of carpet to be tested was half covered and exposed to light along with a blue light fastness standard, a piece of wool fabric. The color fastness of the sample was evaluated by comparing the color change of the sample with the color change of the light fastness standard used. The sample was exposed to a certain amount of light energy and the evaluation was performed on 8 levels of blue scale and 5 levels of gray scale. This gives a dyeing fastness to a light rating of 1-5.

の化合物の２５％懸濁液、２ｇ／ＬのＳａｎｄａｃｉｄ ＶＳ Ｌｉｑ．及び十分なＳａｎｄａｃｉｄ ＰＢ Ｌｉｑ．を含む浴（ｐＨ５）内のパッダに、４００％の含浸率（乾燥重量に基づく）までパッド染色し、そのようにして含浸させたカーペット片を、１０２℃の高温の飽和水蒸気（ｓｔｒｅａｍ）内で８分間固着させ、続いて冷水で洗浄し、非常に良好な耐光堅牢度の赤みがかったイエローカラーを有するカーペット片を得た。 Example 8
A piece of carpet is treated with 0.30 g / L C.I. I. Disperse Blue 73, 100 g / L Polyprint M225 3.5% solution, 3 g / L Sandogen WAF Liq. The following formula for 5 g / L:

25% suspension of a compound of 2 g / L Sandacid VS Liq. And sufficient Sandacid PB Liq. Padded in a bath (pH 5) containing up to 400% impregnation (based on dry weight) and so impregnated carpet pieces in hot saturated steam at 102 ° C. Fixing for 8 minutes followed by washing with cold water gave a piece of carpet having a reddish yellow color with very good light fastness.

Examples 9-16
A piece of carpet was dyed as in Example 8, but the bath was 0.30 g / L C.I. I. Instead of Disperse Blue 73, 0.32 g / L of the following dye (F) was included.

  A piece of carpet was obtained which colored the presented color and had very good light fastness.

Claims (10)

A method for improving the light fastness of a dyed product on a multi-component fiber composed of a thermodynamically compatible polyolefin and polyamide using a disperse dye,
A method wherein the multicomponent fiber is treated with a benzotriazole derivative. Said benzotriazole derivative has the following formula (I):

(Where
R ₁ is a halogen atom;
R ₂ is C ₁ -C ₆ alkyl and R ₃ is C ₁ -C ₆ alkyl)
The method according to claim 1, which is a benzotriazole derivative.   2. The multicomponent fiber consists of thermodynamically compatible polyolefins and polyamides, in particular polypropylene, modified PAs and polyamides, and preferably has polyfilament-like properties. The method described in 1.   The multicomponent fiber is preferably composed of a first polymer core, preferably the polyamide, and the core is covered with a second polymer, preferably the polyolefin, The method of claim 1.   The method according to claim 1, wherein the benzotriazole derivative is used in an amount of 0.01 to 20% by weight, based on dry weight. The disperse dye is represented by the following formula (1):

(Wherein R ₄ and R ′ ₄ are independently a phenyl group, or halogen (especially —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH _3. Or a phenyl group substituted by —OH),
Or the following formula (2), (3) or (4):

Wherein R ₅ , R ′ ₅ and R ″ ₅ are independently halogen (particularly —Cl or —Br), phenyl group, or halogen (particularly —Cl or —Br), —CH ₃ , -CH ₂ CH ₃ , -OCH ₃ , -OCH ₂ CH ₃ or -OH).
Or the following formula (5):

(Where
R ₆ represents halogen (particularly —Cl or —Br), a phenyl group, or halogen (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or A phenyl group substituted by —OH, or a phenyl group, or a halogen group (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH; A phenoxy group
R ₇ is a phenyl group or a phenyl group substituted by halogen (particularly —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH;
R ₈ is —NH ₂ or —NHR ₉ , wherein R ₉ is a halogen (particularly —Cl or —Br), a phenyl group, or a halogen (particularly —Cl or —Br), —CH ₃ , A phenyl group substituted by —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH, or a phenyl group, or halogen (especially —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or —OH, or R ₉ is a group of the formula SO ₂ -phenyl, where the phenyl group of the SO ₂ -phenyl group is , unsubstituted or substituted, or halogen (in particular, -Cl or _{-Br), - CH 3, -CH} 2 CH 3, or -OCH _3, is a phenyl group substituted by -OCH ₂ CH ₃ or -OH Or halogen (Especially —Cl or —Br), —CH ₃ , —CH ₂ CH ₃ , —OCH ₃ , —OCH ₂ CH ₃ or a phenyl group substituted by —OH)
Or the following equation (6):

In which R ₁₀ is H or halogen, in particular —H, —Cl or —Br.
The method of claim 1, comprising:   Light-fast dyed multi-component fibers composed of thermodynamically compatible polyolefins and polyamides dyed with disperse dyes, treated with benzotriazole derivatives A multi-component fiber characterized by   Use of a dyed multicomponent fiber according to claim 7 for the production of carpet and / or textile floor coverings.   Use of benzotriazole derivatives to treat multicomponent fibers composed of thermodynamically compatible polyolefins and polyamides.   Use of a benzotriazole derivative according to claim 9 for improving the light fastness of dyed multicomponent fibers composed of thermodynamically compatible polyolefins and polyamides.