JP2007321247A - Polyamide-based fiber structure - Google Patents
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Abstract
Description
本発明は、カルボキシル基を有する脂肪族ポリマーを染料固着剤として使用する加工方法に関する。本発明は、染色されたポリアミド系繊維構造物の色に影響を及ぼさず、ポリアミド系繊維構造物の染色堅牢度、特に、良好な耐光堅牢度及び湿潤堅牢度を両立させる加工方法に関する。 The present invention relates to a processing method using an aliphatic polymer having a carboxyl group as a dye fixing agent. The present invention relates to a processing method that does not affect the color of a dyed polyamide fiber structure and achieves both fastness to dyeing, particularly good light fastness and wet fastness of a polyamide fiber structure.
ポリアミド繊維は主として酸性染料及び金属錯塩染料などのアニオン性染料で染色されるが、染料と繊維間の結合は強固ではなく、染色後のポリアミド繊維の染色堅牢度、特に湿潤堅牢度は著しく低い。そのため、染料固着剤を使用して染色堅牢度を向上させることが一般的である。染料固着剤として用いられている化合物は天然のタンニン酸や合成タンニンといわれるジヒドロキシジフェニルスルホン及びフェノールスルホン酸塩のホルムアルデヒド縮合物などが広く使用されている。しかしながら、従来の染料固着剤はその固着剤自体が有色であるため、ポリアミド系繊維に被覆させた場合、色相の変化やくすみを生じていた。また、従来の染料固着剤はその化合物自体が熱や光により酸化され、黄色又は褐色に変化するため、その後の加工、保管、着用時での色相の変化やくすみ、耐光堅牢度の低下という問題を引き起こしていた。 Polyamide fibers are mainly dyed with anionic dyes such as acid dyes and metal complex dyes, but the bond between the dye and the fibers is not strong, and the dyeing fastness, particularly wet fastness, of the dyed polyamide fibers is extremely low. Therefore, it is common to improve dyeing fastness using a dye fixing agent. As a compound used as a dye fixing agent, natural tannic acid, synthetic hydroxy tannin, dihydroxydiphenyl sulfone and formaldehyde condensate of phenol sulfonate are widely used. However, since the conventional dye fixing agent is colored, when it is coated on a polyamide fiber, a hue change or dullness occurs. In addition, the conventional dye fixing agent is oxidized by heat or light, and changes to yellow or brown, so that the hue and dullness during subsequent processing, storage, and wearing, and the light fastness are reduced. Was causing.
近年、ポリアミド系繊維構造物の超極細化、機能性付与により、染色堅牢度、特に湿潤堅牢度の低下を招いており、また、消費者の要求する品質が年々向上しているため、淡色の洗濯変退色が重視され始め、洗濯添布汚染堅牢度や液汚染堅牢度の良好なＬ値が５０以上の淡色でも染料固着剤を使用する必要性が出てきた。しかし、淡色で染料固着剤を使用した場合、上記に記載したような染料固着剤による色相の変化、くすみ、熱及び光による変色は顕著に現れ、品質・品位が著しく低下するという問題が生じている。特に、光による変色は、カーボンアークフェードメーターでの暴露ではあまり差が見られないが、日光による暴露で顕著に黄変し、度々消費者クレームとなっている。 In recent years, the ultra-fine and functional addition of polyamide fiber structures has led to a decrease in fastness to dyeing, especially wet fastness, and the quality demanded by consumers has improved year by year. The emphasis on washing discoloration has become important, and it has become necessary to use a dye fixing agent even in light colors with a good L value of 50 or more, which is a fastness to staining with washing cloth and liquid. However, when a dye fixing agent is used in a light color, the hue change, dullness, discoloration due to heat and light as described above appears remarkably, resulting in a problem that the quality and quality deteriorate significantly. Yes. In particular, discoloration due to light does not show much difference in exposure with a carbon arc fade meter, but it is markedly yellowed by exposure to sunlight, and is often a consumer complaint.
これらの問題を解決するために、特許文献１では特定のフェノール系化合物とホルムアルデヒドとを重縮合反応させて得られる重縮合反応生成物を亜二チオン酸塩又はチオ硫酸塩で還元処理して得られるホルムアルデヒド縮合物を用いることにより、処理変色の防止や耐光堅牢度の低下を抑えながら、染料固着性が向上すると提案されている。この染料固着剤を用いると、処理変色や耐光堅牢度の低下が少なく、従来の染料固着剤より改善されてはいるが、淡色で使用するには未だ不十分である。 In order to solve these problems, Patent Document 1 obtains a polycondensation reaction product obtained by polycondensation reaction of a specific phenol compound and formaldehyde by reduction treatment with dithionite or thiosulfate. By using the formaldehyde condensate obtained, it has been proposed that the dye fixing property is improved while preventing discoloration of the treatment and suppressing a decrease in light fastness. When this dye fixing agent is used, the process discoloration and the light fastness are not lowered, and although it is improved over the conventional dye fixing agent, it is still insufficient for use in a light color.
本発明は、染料固着剤による色相の変化やくすみを生じさせることなく、鮮明な色相を維持し、かつ、良好な湿潤堅牢度や耐光堅牢度を両立させることができる染色加工方法及びそれによって得られたポリアミド系繊維構造物を提供するものである。 The present invention provides a dyeing processing method capable of maintaining a clear hue without causing a hue change or dullness due to a dye fixing agent, and achieving both good wet fastness and light fastness, and a dyeing processing method thereof. A polyamide-based fiber structure is provided.
本発明者は、上記の課題を解決すべく鋭意研究を重ねた結果、酸性染料及び金属錯塩染料等のアニオン性染料で染色されたポリアミド系繊維構造物を、それ自体は淡黄色であることからほとんど着色がなく、熱及び光による変色を伴わないカルボキシル基を有する脂肪族ポリマーで被覆させることにより、鮮明な色相や良好な耐光堅牢度を維持しながら、湿潤堅牢度を向上できることを見出し、本発明を完成させた。 As a result of intensive studies to solve the above problems, the present inventor has found that a polyamide fiber structure dyed with an anionic dye such as an acid dye or a metal complex dye is a pale yellow color. It has been found that the wet fastness can be improved while maintaining a clear hue and good light fastness by coating with an aliphatic polymer having a carboxyl group that has almost no coloration and no discoloration due to heat and light. Completed the invention.
すなわち本発明は、酸性染料及び金属錯塩染料等のアニオン性染料で染色されたポリアミド系繊維構造物が、カルボキシル基を有する脂肪族ポリマーで被覆されていることを特徴とするポリアミド系繊維構造物である。
カルボキシル基を有する脂肪族ポリマーの平均分子量が１，０００〜１００，０００であることを特徴とするポリアミド系繊維構造物である。
カルボキシル基を有する脂肪族ポリマーの付与量がポリアミド系繊維構造物の繊維重量に対し１〜１０重量％であることを特徴とするポリアミド系繊維構造物である。
更に、上記のいずれかの加工方法によって加工されていることを特徴とするポリアミド系繊維構造物である。
That is, the present invention is a polyamide fiber structure characterized in that a polyamide fiber structure dyed with an anionic dye such as an acid dye or a metal complex dye is coated with an aliphatic polymer having a carboxyl group. is there.
The polyamide-based fiber structure is characterized in that the aliphatic polymer having a carboxyl group has an average molecular weight of 1,000 to 100,000.
The polyamide fiber structure is characterized in that the amount of the aliphatic polymer having a carboxyl group is 1 to 10% by weight based on the fiber weight of the polyamide fiber structure.
Furthermore, the polyamide fiber structure is processed by any one of the above processing methods.
本発明の方法によれば、染色した直後と同様の鮮明な色相、良好な耐光堅牢度を維持しながら、優れた湿潤堅牢度を有するポリアミド系繊維構造物を得ることができる。
従来の染料固着剤として用いられる化合物はフェノール化合物などの芳香族ポリマーであり、光や熱によりフェノール基が酸化され、カルボニル基に構造が変化するため、黄変や耐光低下の原因となっている。本発明で使用するカルボキシル基を有する脂肪族ポリマーはフェノール基を持っていないため、光や熱による酸化を受けにくい構造となっており、色相の変化やくすみ、耐光堅牢度の低下がなく、優れた湿潤堅牢度を得ることができる。
According to the method of the present invention, it is possible to obtain a polyamide fiber structure having excellent wet fastness while maintaining a clear hue and good light fastness immediately after dyeing.
The compound used as a conventional dye fixing agent is an aromatic polymer such as a phenol compound, and the phenol group is oxidized by light or heat, and the structure is changed to a carbonyl group, which causes yellowing and a decrease in light resistance. . Since the aliphatic polymer having a carboxyl group used in the present invention does not have a phenol group, it has a structure that is difficult to be oxidized by light and heat, and there is no change in hue or dullness, no decrease in light fastness, and excellent High wet fastness can be obtained.
本発明における染料固着剤として有用な化合物はカルボキシル基を有する脂肪族ポリマーであり、例えば、ポリアクリル酸及びその塩、ポリメタクリル酸及びその塩、アクリル酸スルホン酸共重合物及びその塩、アクリル酸マレイン酸の共重合物及びその塩などが挙げられる。それらの平均分子量は１，０００〜１００，０００が好ましい。平均分子量が１，０００以下であると、分子量が小さいためポリアミド系繊維を被覆するのに不十分であり、染料固着剤としての機能を発揮しない。また、平均分子量が１００，０００以上であると、分子量が大きいためポリアミド系繊維との親和性がなくなり、ポリアミド系繊維構造物に吸着させることができない。 Compounds useful as dye fixing agents in the present invention are aliphatic polymers having a carboxyl group, such as polyacrylic acid and salts thereof, polymethacrylic acid and salts thereof, acrylic acid sulfonic acid copolymers and salts thereof, and acrylic acid. Examples include maleic acid copolymers and salts thereof. Their average molecular weight is preferably 1,000 to 100,000. If the average molecular weight is 1,000 or less, the molecular weight is so small that it is insufficient for coating the polyamide fiber, and does not function as a dye fixing agent. Further, when the average molecular weight is 100,000 or more, since the molecular weight is large, the affinity with the polyamide fiber is lost and the polyamide fiber structure cannot be adsorbed.
また、カルボキシル基を有する脂肪族ポリマーにおいては、カルボキシル基の含有量として、１分子あたり１０〜１，５００のカルボキシル基を有することが好ましい。カルボキシル基が１分子あたり１０よりも少ない場合、優れた堅牢度を得る事が出来ない虞があり、カルボキシル基が１分子あたり１，５００よりも多くなっても、堅牢度を向上する効果に変化はない。 The aliphatic polymer having a carboxyl group preferably has 10 to 1,500 carboxyl groups per molecule as the carboxyl group content. If the number of carboxyl groups is less than 10 per molecule, excellent fastness may not be obtained, and even if the number of carboxyl groups exceeds 1,500 per molecule, the effect of improving fastness is changed. There is no.
本発明のポリアミド系繊維構造物はナイロン６、ナイロン６６などのポリアミド系繊維を主体とする繊維構造物であり、ポリアミド系繊維以外の繊維が含まれていてもよい。繊維構造物の種類は、原綿、トウ、紡績糸、フィラメント糸、織物、編物、不織布などのいかなる形態にあってもよい。
本発明の方法で処理されるポリアミド系繊維構造物は均染型酸性染料、ハーフミリング型酸性染料、ミリング型酸性染料などの酸性染料、金属錯塩染料を用いて染色したものである。
The polyamide fiber structure of the present invention is a fiber structure mainly composed of polyamide fibers such as nylon 6 and nylon 66, and may contain fibers other than polyamide fibers. The type of the fiber structure may be any form such as raw cotton, tow, spun yarn, filament yarn, woven fabric, knitted fabric, and non-woven fabric.
The polyamide fiber structure treated by the method of the present invention is dyed using an acid dye such as a level dye acid dye, a half milling acid dye, a milling acid dye, or a metal complex dye.
本発明の処理方法は吸尽法で行うのが好ましい。カルボキシル基を有する脂肪族ポリマーを溶解した溶液中にポリアミド系繊維構造物を入れ、処理温度３０℃〜１００℃で５〜３０分間浸漬することにより処理を行うことができる。また、カルボキシル基を有する脂肪族ポリマーの吸尽性を向上させるため、処理溶液のｐＨを５以下にすることが好ましく、酸を添加するほうがよい。添加する酸は、硫酸、スルファミン酸などの無機酸、酢酸、リンゴ酸などの有機酸が挙げられる。
カルボキシル基を有する脂肪族ポリマーの使用量は、染色された染料の種類、濃度により多少異なるが、ポリアミド系繊維構造物の繊維重量に対して１〜１０重量％使用するのが望ましい。
The treatment method of the present invention is preferably carried out by the exhaust method. The treatment can be performed by placing the polyamide fiber structure in a solution in which the aliphatic polymer having a carboxyl group is dissolved, and immersing the solution at a treatment temperature of 30 ° C. to 100 ° C. for 5 to 30 minutes. Moreover, in order to improve the exhaustibility of the aliphatic polymer which has a carboxyl group, it is preferable to make pH of a process solution into 5 or less, and it is better to add an acid. Examples of the acid to be added include inorganic acids such as sulfuric acid and sulfamic acid, and organic acids such as acetic acid and malic acid.
The amount of the aliphatic polymer having a carboxyl group is slightly different depending on the kind and concentration of the dyed dye, but it is desirable to use 1 to 10% by weight based on the fiber weight of the polyamide fiber structure.
以下、実施例により本発明をさらに具体的に説明する。
実施例及び比較例に用いた染色布の種類及び染色条件は次のとおりである。
染色布Ａ
供試布 ナイロン６フィラメント糸（４４ｄｔｅｘ／３４ｆ）、ポリウレタンモノフィラメント糸（４４ｄｔｅｘ）から成る２ＷＡＹニット
染料 Ｃ．Ｉ． Ａｃｉｄ Ｂｌｕｅ ２９０ ０．０１％ｏ．ｗ．ｆ．
均染剤 ユニガールＡＳＳ−１０ ２．００％ｏ．ｗ．ｆ．
（明成化学工業株式会社製）
酢酸 ０．５ｃｃ／Ｌ
浴比 １：２０
染色条件 ９５℃×３０分
上記の条件下で染色した後、水洗、脱水及び自然乾燥した。
染色布B
供試布 ナイロン６フィラメント糸（４４ｄｔｅｘ／３４ｆ）、ポリウレタンモノフィラメント糸（４４ｄｔｅｘ）から成る２ＷＡＹニット
染料 Ｃ．Ｉ． Ａｃｉｄ Ｏｒａｎｇｅ ６７ ０．００６％ｏ．ｗ．ｆ．
Ｃ．Ｉ． Ａｃｉｄ Ｒｅｄ ２５７ ０．００５％０．ｗ．ｆ．
均染剤 ユニガールＡＳＳ−１０ ２．００％ｏ．ｗ．ｆ．
（明成化学工業株式会社製）
酢酸 ０．５ｃｃ／Ｌ
浴比 １：２０
染色条件 ９５℃×３０分
上記の条件下で染色した後、水洗、脱水及び自然乾燥を行った。
Hereinafter, the present invention will be described more specifically with reference to examples.
The types and dyeing conditions of the dyed fabrics used in the examples and comparative examples are as follows.
Dyed cloth A
Test cloth 2WAY knit dye consisting of nylon 6 filament yarn (44 dtex / 34f), polyurethane monofilament yarn (44 dtex) C.I. I. Acid Blue 290 0.01% o. w. f.
Leveling agent Unigirl ASS-10 2.00% o. w. f.
(Made by Meisei Chemical Industry Co., Ltd.)
Acetic acid 0.5cc / L
Bath ratio 1:20
Dyeing conditions 95 ° C. × 30 minutes After dyeing under the above conditions, washing, dehydration and natural drying were performed.
Dyed cloth B
Test cloth 2WAY knit dye consisting of nylon 6 filament yarn (44 dtex / 34f), polyurethane monofilament yarn (44 dtex) C.I. I. Acid Orange 67 0.006% o. w. f.
C. I. Acid Red 257 0.005% 0. w. f.
Leveling agent Unigirl ASS-10 2.00% o. w. f.
(Made by Meisei Chemical Industry Co., Ltd.)
Acetic acid 0.5cc / L
Bath ratio 1:20
Dyeing conditions 95 ° C. × 30 minutes After dyeing under the above conditions, washing, dehydration and natural drying were performed.
［実施例１］
ポリアクリル酸ナトリウム ３．０％ｏ．ｗ．ｆ．
（平均分子量 ３，５００、有効成分 ４０％）
スルファミン酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Example 1]
Sodium polyacrylate 3.0% o. w. f.
(Average molecular weight 3,500, active ingredient 40%)
Sulfamic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
［実施例２］
ポリアクリル酸ナトリウム ３．０％ｏ．ｗ．ｆ．
（平均分子量 ６，０００、有効成分 ４３％）
スルファミン酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Example 2]
Sodium polyacrylate 3.0% o. w. f.
(Average molecular weight 6,000, active ingredient 43%)
Sulfamic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
［実施例３］
アクリル酸/スルホン酸系共重合体塩（ナトリウム塩） ２．５％ｏ．ｗ．ｆ．
（平均分子量 ３，０００、有効成分 ５０％）
スルファミン酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Example 3]
Acrylic acid / sulfonic acid copolymer salt (sodium salt) 2.5% o. w. f.
(Average molecular weight 3,000, active ingredient 50%)
Sulfamic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
［実施例４］
アクリル酸/スルホン酸系共重合体塩（ナトリウム塩） ２．５％ｏ．ｗ．ｆ．
（平均分子量 ６，０００、有効成分 ５０％）
スルファミン酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Example 4]
Acrylic acid / sulfonic acid copolymer salt (sodium salt) 2.5% o. w. f.
(Average molecular weight 6,000, active ingredient 50%)
Sulfamic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
［比較例１］
ナイロンフィックス５０１（有効成分 ４３％） ３．０％ｏ．ｗ．ｆ．
（センカ株式会社製 多価フェノールスルホン酸塩・ホルムアルデヒド重縮合物）
酢酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Comparative Example 1]
Nylon fix 501 (active ingredient 43%) 3.0% o. w. f.
(Polyphenol sulfonate / formaldehyde polycondensate by Senka Co., Ltd.)
Acetic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
［比較例２］
サンライフＴＡ−５０Ｋ（有効成分 ４０％） ３．０％ｏ．ｗ．ｆ．
（日華化学株式会社製 天然タンニン酸誘導体、酒石酸アンリモニルカリウム、多価フェノールスルホン酸塩・ホルムアルデヒド重縮合物）
酢酸 １．０ｇ／Ｌ
浴比 １：２０
処理条件 ８０℃×２０分
上記の条件下で浸漬処理した後、水洗、脱水及び自然乾燥を行った。
[Comparative Example 2]
Sun Life TA-50K (active ingredient 40%) 3.0% o. w. f.
(Natural tannic acid derivative, potassium limonate tartrate, polyhydric phenol sulfonate / formaldehyde polycondensate)
Acetic acid 1.0 g / L
Bath ratio 1:20
Treatment conditions After immersing under the above conditions at 80 ° C. for 20 minutes, washing with water, dehydration and natural drying were performed.
染料固着剤処理による変色の評価
未処理布、実施例１〜４及び比較例１〜２で得られた処理布を測色機（Ｍａｃｂｅｔｈ社製；ＣＥ−３０００）にてＬ＊ａ＊ｂ＊を測定し、未処理布を標準とする色差（△Ｅ＊ａｂ）を算出した。値が大きいほど変色が強いことを示す。測定結果を表１に示す。
Evaluation of discoloration by dye fixing agent treatment The untreated fabrics, the treated fabrics obtained in Examples 1 to 4 and Comparative Examples 1 to 2 were subjected to L * a * b * using a colorimeter (manufactured by Macbeth; CE-3000) . Was measured, and a color difference (ΔE * ab) with an untreated cloth as a standard was calculated. The larger the value, the stronger the discoloration. The measurement results are shown in Table 1.
染料固着剤処理後の熱処理による変色の評価
未処理布、実施例１〜４及び比較例１〜２で得られた処理布を１６０℃で１分間乾熱処理した。乾熱処理後の生地を測色機（Ｍａｃｂｅｔｈ社製；ＣＥ−３０００）にてＬ＊ａ＊ｂ＊を測定し、未処理布（熱処理前）を標準とする色差（△Ｅ＊ａｂ）を算出した。値が大きいほど変色が強いことを示す。測定結果を表２に示す。
Evaluation of discoloration by heat treatment after dye fixing agent treatment The untreated fabrics, the treated fabrics obtained in Examples 1 to 4 and Comparative Examples 1 to 2 were dry-heat treated at 160 ° C. for 1 minute. Measure the L * a * b * of the fabric after dry heat treatment with a colorimeter (Macbeth; CE-3000) and calculate the color difference (ΔE * ab) based on the untreated fabric (before heat treatment). did. The larger the value, the stronger the discoloration. The measurement results are shown in Table 2.
洗濯堅牢度試験
洗濯に対する染色堅牢度試験 ＪＩＳ Ｌ０８４４ Ａ−２法に基づいて行った。
添布白布の汚染度合いを汚染用グレースケールで、処理布の変退色度合いを変退色用グレースケールで判定した。
また、処理布の変退色度合いを明確にするため、洗濯試験前及び洗濯試験後の処理布を測色機（Ｍａｃｂｅｔｈ社製；ＣＥ−３０００）にてＬ＊ａ＊ｂ＊を測定し、洗濯試験前を標準とする洗濯試験後の色相差（△ａ＊ｂ＊）、明度差（△Ｌ＊）を算出した。色相差の値が大きいほど洗濯による変色、明度差の値が大きいほど洗濯による退色が大きいことを示す。
耐光堅牢度試験
紫外線カーボンアーク灯光に対する染色堅牢度試験 ＪＩＳ Ｌ０８４２に基づき、カーボンアークフェードメーターにて６３℃で２０時間暴露し、変退色用グレースケールで判定した。
日光暴露堅牢度試験
日光に対する染色堅牢度試験 ＪＩＳ Ｌ０８４１に基づき、露光装置にて５日間暴露し、変退色用グレースケールで判定した。
各種堅牢度の評価結果を表３と表４に示す。
Washing fastness test Dye fastness test for washing It was performed based on JIS L0844 A-2 method.
The degree of contamination of the white cloth was determined with a gray scale for contamination, and the degree of color change of the treated cloth was determined with a gray scale for color change.
In addition, in order to clarify the degree of discoloration of the treated cloth, L * a * b * of the treated cloth before and after the washing test was measured with a colorimeter (Macbeth; CE-3000) and washed. The hue difference (Δa * b * ) and lightness difference (ΔL * ) after the laundry test with the standard before the test were calculated. Larger hue difference values indicate discoloration due to washing, and larger lightness difference values indicate greater color fading due to washing.
Based on the color fastness test JIS L0842 for light fastness test <br/> ultraviolet carbon arc lamp light was exposed for 20 hours at 63 ° C. at a carbon arc fade meter, was determined in grayscale for discoloration.
Sunlight exposure fastness test Dye fastness test against sunlight Based on JIS L0841, it was exposed with an exposure apparatus for 5 days, and judged with a gray scale for fading.
Tables 3 and 4 show the evaluation results of various fastnesses.
表１〜４の結果からわかるように、従来の天然タンニン酸やジヒドロキシジフェニルスルホン及びフェノールスルホン酸塩のホルムアルデヒド縮合物で処理したポリアミド系繊維は良好な洗濯堅牢度を有しているが、染料固着剤による変色、熱処理による変色、光による変色（すなわち、耐光堅牢度、日光暴露）でかなりの黄変が認められる。
本発明のカルボキシル基を有する脂肪族ポリマーで処理したポリアミド系繊維構造物は染料固着剤処理による変色、熱処理による変色、光による変色（すなわち、耐光堅牢度、日光暴露）がほとんどなく、良好な洗濯堅牢度、特に洗濯変退色を有していることが認められる。
As can be seen from the results in Tables 1 to 4, polyamide fibers treated with a conventional formaldehyde condensate of natural tannic acid, dihydroxydiphenyl sulfone and phenol sulfonate have good washing fastness, but dye fixing Significant yellowing is observed due to discoloration by the agent, discoloration by heat treatment, and discoloration by light (that is, light fastness, exposure to sunlight).
The polyamide fiber structure treated with the aliphatic polymer having a carboxyl group of the present invention has almost no discoloration due to the dye fixing agent treatment, discoloration due to heat treatment, or discoloration due to light (that is, light fastness, exposure to sunlight), and good washing It is recognized that it has a fastness, in particular a wash fading color.
Claims (3)
3. The polyamide fiber structure according to claim 1, wherein the amount of the aliphatic polymer having a carboxyl group is 1 to 10% by weight based on the fiber weight of the polyamide fiber structure.
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| CN105418887A (en) * | 2015-12-14 | 2016-03-23 | 厦门大邦瑞达印染材料有限公司 | Anionic polyurethane color fixing agent for acid dyes as well as preparation method and application of color fixing agent |
| EP3360930A1 (en) | 2014-07-04 | 2018-08-15 | FUJIFILM Corporation | Novel compound, coloring composition for dyeing or textile, ink jet ink, method of printing on fabric, and dyed or printed fabric |
| CN115538196A (en) * | 2021-06-30 | 2022-12-30 | 上海凯赛生物技术股份有限公司 | High-color-fastness polyamide 56 fabric and color fixing method thereof |
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| CN115538196A (en) * | 2021-06-30 | 2022-12-30 | 上海凯赛生物技术股份有限公司 | High-color-fastness polyamide 56 fabric and color fixing method thereof |
| CN115538196B (en) * | 2021-06-30 | 2024-02-23 | 上海凯赛生物技术股份有限公司 | High-color-fastness polyamide 56 fabric and color fixing method thereof |
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