JP3914098B2 - Synthetic fiber treatment agent and synthetic fiber treatment method - Google Patents
Synthetic fiber treatment agent and synthetic fiber treatment method Download PDFInfo
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Description
【0001】
【発明の属する技術分野】
本発明は合成繊維用処理剤及び合成繊維の処理方法に関する。近年、合成繊維の紡糸工程や加工工程においては、高速化が更に一段と進み、これに伴って毛羽や糸切れがますます発生し易くなっている。かかる毛羽や糸切れの発生を防止するため、合成繊維に付着させる合成繊維用処理剤として毛羽や糸切れの発生を防止するための機能性向上剤の含有割合を増加させたものを使用したり、合成繊維に対する合成繊維用処理剤の付着量を上げることが行われているが、依然として近年の高速化には充分に対応できていない。本発明は、合成繊維の紡糸工程や加工工程における近年の高速化にも対応して、毛羽や糸切れの発生を充分に防止できる合成繊維用処理剤及び合成繊維の処理方法に関する。
【0002】
【従来の技術】
従来、合成繊維用処理剤として一般に、潤滑剤及び機能性向上剤を含有するものが使用されている。かかる合成繊維用処理剤には、毛羽や糸切れの発生を防止するための機能性向上剤を含有するものも各種が知られている(特開平7−310241、特開平8−325949、特開平11−61646)。ところが、これら従来の合成繊維用処理剤には、近年の高速化された紡糸工程や加工工程において、毛羽や糸切れの発生を充分に防止できないという問題がある。
【0003】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、近年における合成繊維の紡糸工程や加工工程での高速化にも対応して、毛羽や糸切れの発生を充分に防止できる合成繊維用処理剤及び合成繊維の処理方法を提供する処にある。
【0004】
【課題を解決するための手段】
しかして本発明者らは、前記の課題を解決するべく研究した結果、いずれも特定の潤滑剤、機能性向上剤及び乳化剤を含有して成る合成繊維用処理剤が正しく好適であり、またかかる合成繊維用処理剤を合成繊維に対し所定量付着させることが正しく好適であることを見出した。
【0005】
すなわち本発明は、潤滑剤及び機能性向上剤を含有する合成繊維用処理剤において、潤滑剤としてポリエーテル化合物又はポリエーテル化合物と(ポリ)エーテルエステル化合物との混合物を90〜99重量%含有しており、また機能性向上剤の少なくとも一部として脂肪族カルボン酸のリチウム塩をリチウムとして0.01〜0.5重量%含有していて、更に乳化剤として非イオン性界面活性剤を含有して成ることを特徴とする合成繊維用処理剤に係る。また本発明は、前記の本発明に係る該合成繊維用処理剤を合成繊維に対し0.1〜3重量%となるよう付着させることを特徴とする合成繊維の処理方法に係る。
【0006】
先ず、本発明に係る合成繊維用処理剤について説明する。本発明に係る合成繊維用処理剤は、潤滑剤と、機能性向上剤と、乳化剤とを含有して成るものである。
【0007】
潤滑剤としては、ポリエーテル化合物又はポリエーテル化合物と(ポリ)エーテルエステル化合物との混合物を用いるが、かかるポリエーテル化合物としては平均分子量500〜20000のものを用いるのが好ましい。
【0008】
前記のポリエーテル化合物としては、いずれも分子中にポリオキシアルキレン基を有する、ポリエーテルモノオール、ポリエーテルジオール、ポリエーテルトリオール等が挙げられるが、なかでも炭素数1〜18の1〜3価のヒドロキシ化合物に炭素数2〜4のアルキレンオキサイドをブロック状又はランダム状に付加したポリエーテル化合物が好ましい。
【0009】
また前記の(ポリ)エーテルエステル化合物としては、炭素数4〜26の1〜3価の脂肪族アルコールに炭素数2〜4のアルキレンオキサイドを付加した(ポリ)エーテル化合物と、炭素数4〜26の脂肪族カルボン酸とをエステル化した(ポリ)エーテルエステル化合物、2)1〜3価の芳香族アルコールに炭素数2〜4のアルキレンオキサイドを付加した(ポリ)エーテル化合物と、炭素数4〜26の脂肪族カルボン酸とをエステル化した(ポリ)エーテルエステル化合物、3)炭素数4〜26の脂肪族アルコールに炭素数2〜4のアルキレンオキサイドを付加した(ポリ)エーテル化合物と、芳香族カルボン酸とをエステル化した(ポリ)エーテルエステル化合物等が挙げられる。
【0010】
機能性向上剤としては少なくともその一部として脂肪族カルボン酸のリチウム塩を用いる。その詳細については後述するが、かかる脂肪族カルボン酸のリチウム塩以外の他の機能性向上剤としては、1)有機スルホン酸塩、有機脂肪酸塩等のアニオン性界面活性剤、ラウリルトリメチルアンモニウムエトサルフェート等のカチオン性界面活性剤、オクチルジメチルアンモニオアセタート等の両性界面活性剤等の帯電防止剤、2)有機リン酸塩、脂肪酸等の油性向上剤、3)主鎖として平均分子量1500〜3000のポリジメチルシロキサン鎖を有し且つ側鎖として平均分子量700〜5000のポリオキシアルキレン鎖を有するポリエーテル変性シリコーン、ペルフルオロアルキル基を有する界面活性剤等の浸透性向上剤、4)ポリエーテルポリエステル等の集束性向上剤、5)有機チタン系化合物、有機リン系化合物等の極圧添加剤、6)フェノール系、ホスファイト系、チオエーテル系、アミン系等の抗酸化剤、7)防錆剤等が挙げられる。
【0011】
乳化剤としては非イオン性界面活性剤を用いる。かかる非イオン性界面活性剤としては、1)ポリオキシアルキレンアルキルエーテル、ポリオキシアルキレンアルキルフェニルエーテル、ポリオキシアルキレンアルキルエステル、ポリオキシアルキレンヒマシ油、ポリオキシアルキレンアルキルアミノエーテル等の、分子中にポリオキシアルキレン基を有する非イオン性界面活性剤、2)ソルビタンモノラウレート、ソルビタントリオレート、グリセリンモノラウレート、ジグリセリンジラウレート等の、多価アルコール部分エステル型の非イオン性界面活性剤、3)3〜6価のアルコールと脂肪酸との部分エステルにアルキレンオキサイドを付加したもの、アルキレンオキサイドを付加した3〜6価のアルコールと脂肪酸との部分エステル又は完全エステル、3〜6価のアルコールとヒドロキシ脂肪酸とのエステルにアルキレンオキサイドを付加したもの等の、ポリオキシアルキレン多価アルコール脂肪酸エステル型の非イオン性界面活性剤等が挙げられる。これらのなかでも、分子中にオキシエチレン基の繰り返し数3〜15のポリオキシエチレン基及び炭素数8〜18のアルキル基を有するポリオキシエチレンアルキルエーテルが好ましい。
【0012】
本発明に係る合成繊維用処理剤は、前記したように、機能性向上剤の少なくとも一部として脂肪族カルボン酸のリチウム塩を含有して成るものである。かかるリチウム塩を形成することとなる脂肪族カルボン酸としては、1)蟻酸、酢酸、プロピオン酸、カプロン酸、カプリル酸、2−エチルヘキサン酸、カプリン酸、ウンデカン酸、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、イソステアリン酸、ベヘニン酸、オレイン酸、エルシン酸、リノール酸、アクリル酸、メタクリル酸等の脂肪族モノカルボン酸、2)シュウ酸、マロン酸、コハク酸、アルケニルコハク酸、アジピン酸、アゼライン酸、セバシン酸、ウンデカン二酸、マレイン酸、クエン酸、1,2,3,4−ブタンテトラカルボン酸等の脂肪族ポリカルボン酸等が挙げられる。
【0013】
以上例示した脂肪族カルボン酸のなかでも、炭素数6〜22の脂肪族モノカルボン酸、炭素数6〜22の脂肪族ジカルボン酸が好ましい。
【0014】
脂肪族カルボン酸のリチウム塩は以上例示したような脂肪族カルボン酸と水酸化リチウムとの中和反応によって得られる。
【0015】
本発明に係る合成繊維用処理剤は、以上説明したように、潤滑剤としてポリエーテル化合物又はポリエーテル化合物と(ポリ)エーテルエステル化合物との混合物を含有しており、また機能性向上剤の少なくとも一部として脂肪族カルボン酸のリチウム塩を含有していて、更に乳化剤として非イオン性界面活性剤を含有して成るものであり、要すれば前記したリチウム塩以外の他の機能性向上剤を含有して成るものであるが、潤滑剤を90〜99重量%含有しており、また前記したリチウム塩をリチウムとして0.01〜0.5重量%含有していて、残部として乳化剤、更には前記したリチウム塩以外の他の機能性向上剤を含有して成るものである。
【0016】
次に、本発明に係る合成繊維の処理方法について説明する。本発明に係る合成繊維の処理方法は、以上説明したような本発明に係る合成繊維用処理剤を合成繊維に対し0.1〜3重量%、好ましくは0.3〜1重量%となるよう付着させる方法である。合成繊維用処理剤を合成繊維に付着させる工程としては、紡糸工程、紡糸と延伸とを同時に行なう工程等が挙げられる。また合成繊維用処理剤を合成繊維に付着させる方法としては、ローラー給油法、計量ポンプを用いたガイド給油法、浸漬給油法、スプレー給油法等が挙げられる。更に合成繊維用処理剤を合成繊維に付着させる際の形態としては、ニート、有機溶剤溶液、水性液等が挙げられるが、水性液が好ましい。合成繊維用処理剤の水性液を付着させる場合も、合成繊維に対し合成繊維用処理剤として0.1〜3重量%、好ましくは0.3〜1重量%となるよう付着させる。
【0017】
本発明に係る合成繊維の処理方法の適用対象となる合成繊維としては、ポリエステル系繊維、ポリアミド系繊維、ポリアクリル系繊維、ポリオレフィン系繊維、ポリウレタン系繊維等が挙げられるが、ポリエステル系繊維又はポリアミド系繊維に適用する場合に本発明の効果の発現が高い。
【0018】
【発明の実施の形態】
本発明の合成繊維用処理剤の実施形態としては、次の1)〜3)が挙げられる。
1)下記の潤滑剤(A−1)を93重量%、下記のリチウム塩(B−1)を1重量%、下記の乳化剤(C−1)を5重量%及び下記の機能性向上剤(D−1)を1重量%(合計100重量%)含有して成る合成繊維用処理剤(リチウムとして0.047重量%含有)。
潤滑剤(A−1):ブチルアルコールにエチレンオキサイド(以下、EOという)とプロピレンオキサイド(以下、POという)とをEO/PO=50/50(重量比)の割合でとをランダム状に付加した数平均分子量2500のポリエーテルモノオール/ブチルアルコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量1000のポリエーテルモノオール/ドデシルアルコールにEOとPOとをEO/PO=35/65(重量比)の割合でブロック状に付加した数平均分子量1400のポリエーテルトリオール=40/20/30(重量比)の混合物
リチウム塩(B−1):オレイン酸リチウム
乳化剤(C−1):ポリオキシエチレン(7モル)ラウリルエーテル
機能向上剤(D−1):主鎖として平均分子量2300のポリジメチルシロキサン鎖を有し且つ側鎖として平均分子量3000のポリオキシエチレン鎖を有するポリエーテル変性シリコーン
【0019】
2)前記の潤滑剤(A−1)を93重量%、下記のリチウム塩(B−2)を1重量%、前記の乳化剤(C−1)を5重量%及び前記の機能性向上剤(D−1)を1重量%(合計100重量%)含有して成る合成繊維用処理剤(リチウムとして0.058重量%含有)。
リチウム塩(B−2):オクテニルコハク酸ジリチウム
【0020】
3)下記の潤滑剤(A−2)を93重量%、下記のリチウム塩(B−3)を1重量%、前記の乳化剤(C−1)を5重量%及び前記の機能性向上剤(D−1)を1重量%(合計100重量%)含有して成る合成繊維用処理剤(リチウムとして0.025重量%含有)。
潤滑剤(A−2):ポリオキシエチレン(8モル)ラウリルエーテルとデカン酸とのエステル/エチレングリコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量5000のポリエーテルジオール/ブチルアルコールにEOとPOとをEO/PO=40/60(重量比)の割合でランダム状に付加した数平均分子量1500のポリエーテルモノオール/ラウリルアルコールにEOとPOとをEO/PO=35/65(重量比)の割合でブロック状に付加した数平均分子量1400のポリエーテルモノオール=10/10/50/30(重量比)の混合物
リチウム塩(B−3):ドデシルチオプロピオン酸リチウム
【0021】
また本発明に係る合成繊維の処理方法の実施形態としては、次の4)が挙げられる。
4)前記1)〜3)のうちでいずれかの合成繊維用処理剤を水性液となし、この水性液を紡糸したポリエチレンテレフタレート繊維に対し合成繊維用処理剤として0.5重量%となるよう付着させる合成繊維の処理方法。
【0022】
以下、本発明の構成及び効果をより具体的にするため、実施例等を挙げるが、本発明がこれらの実施例に限定されるというものではない。尚、以下の実施例等において、部は重量部を、また%は重量%を意味する。
【0023】
【実施例】
試験区分1(合成繊維用処理剤の調製)
・実施例1{合成繊維用処理剤(P−1)の調製}
下記の潤滑剤(A−1)93部、下記のリチウム塩(B−1)1部、下記の乳化剤(C−1)5部及び下記の機能性向上剤(D−1)1部を均一混合して実施例1の合成繊維用処理剤(P−1)を調製した。
潤滑剤(A−1):ブチルアルコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量2500のポリエーテルモノオール/ブチルアルコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量1000のポリエーテルモノオール/ドデシルアルコールにEOとPOとをEO/PO=35/65(重量比)の割合でブロック状に付加した数平均分子量1400のポリエーテルモノオール=40/20/30(重量比)の混合物
リチウム塩(B−1):オレイン酸リチウム
乳化剤(C−1):ポリオキシエチレン(7モル)ラウリルエーテル
機能性向上剤(D−1):主鎖として平均分子量2300のポリジメチルシロキサン鎖を有し且つ側鎖として平均分子量3000のポリオキシエチレン鎖を有するポリエーテル変性シリコーン
【0024】
・実施例2、3及び比較例1〜11{合成繊維用処理剤(P−2)、(P−3)及び(R−1)〜(R−11)の調製}
実施例1の合成繊維用処理剤(P−1)と同様にして、実施例2、3の合成繊維用処理剤(P−2)、(P−3)及び比較例1〜11の合成繊維用処理剤(R−1)〜(R−11)を調製した。実施例1も含め、各例で調製した合成繊維用処理剤の内容を表1にまとめて示した。
【0025】
【表1】
【0026】
表1において、
A−1:ブチルアルコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量2500のポリエーテルモノオール/ブチルアルコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量1000のポリエーテルモノオール/ラウリルアルコールにEOとPOとをEO/PO=35/65(重量比)の割合でブロック状に付加した数平均分子量1400のポリエーテルモノオール=40/20/30(重量比)の混合物
A−2:ポリオキシエチレン(8モル)ラウリルエーテルとデカン酸とのエステル/エチレングリコールにEOとPOとをEO/PO=50/50(重量比)の割合でランダム状に付加した数平均分子量5000のポリエーテルジオール/ブチルアルコールにEOとPOとをEO/PO=40/60(重量比)の割合でランダム状に付加した数平均分子量1500のポリエーテルモノオール/ラウリルアルコールにEOとPOとをEO/PO=35/65(重量比)の割合でブロック状に付加した数平均分子量1400のポリエーテルモノオール=10/10/50/30(重量比)の混合物
【0027】
B−1:オレイン酸リチウム
B−2:オクテニルコハク酸ジリチウム
B−3:ドデシルチオプロピオン酸リチウム
B−4:テレフタル酸ジリチウム
【0028】
C−1:ポリオキシエチレン(7モル)ラウリルエーテル
【0029】
D−1:主鎖として平均分子量2300のポリジメチルシロキサン鎖を有し且つ側鎖として平均分子量3000のポリオキシエチレン鎖を有するポリエーテル変性シリコーン
D−2:オレイン酸カリウム
D−3:オレイン酸ナトリウム
D−4:ドデシルスルホン酸カリウム
D−5:ドデシルスルホン酸ナトリウム
D−6:ドデシルホスフェートカリウム
D−7:ドデシルホスフェートナトリウム
D−8:ドデシル硫酸エステルカリウム
D−9:ドデシル硫酸エステルナトリウム
D−10:オレイン酸テトラエチルアンモニウム
【0030】
試験区分2(合成繊維への合成繊維用処理剤の付着、仮撚加工及び評価)
・合成繊維への合成繊維用処理剤の付着
試験区分1で調製した各合成繊維用処理剤と希釈水とを均一混合して10%水性液とした。固有粘度0.64、酸化チタン含有量0.2%のポリエチレンテレフタレートチップを常法により乾燥した後、エクストルーダーを用いて295℃で紡糸し、口金から吐出して冷却固化した後の走行糸条に、調製した10%水性液を、計量ポンプを用いたガイド給油法にて、合成繊維用処理剤としての付着量が表2記載の付着量となるよう付着させた後、ガイドで集束させ、機械的な延伸を伴うことなく3000m/分の速度で巻き取り、128デシテックス36フィラメントの部分延伸糸を10kg捲きケークとして得た。
【0031】
・仮撚加工
前記で得たケークを用いて、下記のコンタクトヒーター式仮撚機による仮撚加工条件で仮撚加工を行なった。
・・コンタクトヒーター式仮撚機による仮撚加工条件:
コンタクトヒーター式仮撚機(アーネストスクラッグアンドサンズ社製のSDS1200B)を使用して、加工速度=800m/分、延伸倍率=1.522、施撚方式=3軸デイスク外接式摩擦方式(入り側ガイドデイスク1枚、出側ガイドデイスク1枚、硬質ポリウレタンデイスク7枚)、加撚側ヒーター=長さ2.5mで表面温度212℃、解撚側ヒーター=なし、目標撚り数=3300T/mの条件で、25日間連続運転による仮撚加工を行なった。
【0032】
毛羽の評価
前記の仮撚加工において、仮撚加工糸を巻き取る前に、毛羽計数装置(東レエンジニアリング社製のDT−105)にて1時間当たりの毛羽数を測定し、次の基準で評価した。結果を表2にまとめて示した。
AA:測定された毛羽数が0個
A:測定された毛羽数が1〜5個
B:測定された毛羽数が6〜9個
C:測定された毛羽数が10個以上
【0033】
・糸切れの評価
前記の仮撚加工において、連続運転の25日間に発生した糸切れ回数を1時間当たりの回数に換算し、次の基準で評価した。結果を表2にまとめて示した。
AA:発生した糸切れ回数が0
A:発生した糸切れ回数が1未満(但し、0を含まない)
B:発生した糸切れ回数が1以上3未満
C:発生した糸切れ回数が3以上
【0034】
【表2】
【0035】
表2において、
付着量:合成繊維に対する合成繊維用処理剤としての付着%
【0036】
【発明の効果】
既に明らかなように、以上説明した本発明には、近年における合成繊維の紡糸工程や加工工程での高速化にも対応して、毛羽や糸切れの発生を充分に防止できるという効果がある。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic fiber treatment agent and a synthetic fiber treatment method. In recent years, in the spinning process and processing process of synthetic fibers, the speed has further increased, and along with this, fluff and thread breakage are more likely to occur. In order to prevent the occurrence of such fluff and yarn breakage, a treatment agent for synthetic fibers to be attached to the synthetic fiber may be used with an increased content of a functional improver for preventing the occurrence of fluff or yarn breakage. Although the amount of the synthetic fiber treatment agent attached to the synthetic fiber has been increased, it has not been able to cope with the recent increase in speed. The present invention relates to a synthetic fiber treatment agent and a synthetic fiber treatment method that can sufficiently prevent the occurrence of fluff and yarn breakage in response to recent increases in the spinning and processing steps of synthetic fibers.
[0002]
[Prior art]
Conventionally, what contains a lubricant and a functional improvement agent is generally used as a processing agent for synthetic fibers. Various types of synthetic fiber treatment agents containing a functional improver for preventing the occurrence of fluff and yarn breakage are known (Japanese Patent Laid-Open Nos. 7-310241, 8-325949, and 11-61646). However, these conventional treating agents for synthetic fibers have a problem that the occurrence of fluff and yarn breakage cannot be sufficiently prevented in the spinning process and processing process which have been speeded up in recent years.
[0003]
[Problems to be solved by the invention]
The problem to be solved by the present invention is that the synthetic fiber treatment agent and synthetic fiber that can sufficiently prevent the occurrence of fluff and yarn breakage in response to the recent increase in the speed of spinning and processing of synthetic fibers. It is a place that provides a processing method.
[0004]
[Means for Solving the Problems]
Accordingly, as a result of studies conducted by the present inventors to solve the above-mentioned problems, a treating agent for synthetic fibers containing a specific lubricant, a functional improver, and an emulsifier is suitable and suitable. It has been found that it is properly preferable to attach a predetermined amount of the treating agent for synthetic fiber to the synthetic fiber.
[0005]
That is, the present invention provides a synthetic fiber treating agent containing a lubricant and a functional improver, comprising 90 to 99% by weight of a polyether compound or a mixture of a polyether compound and a (poly) ether ester compound as a lubricant. In addition, the lithium salt of an aliphatic carboxylic acid is contained as lithium as 0.01 to 0.5% by weight as at least a part of the functional improver, and further contains a nonionic surfactant as an emulsifier. The present invention relates to a synthetic fiber treating agent characterized by comprising: The present invention also relates to a method for treating synthetic fibers, characterized in that the synthetic fiber treatment agent according to the present invention is adhered to the synthetic fibers in an amount of 0.1 to 3% by weight.
[0006]
First, the synthetic fiber treating agent according to the present invention will be described. The synthetic fiber treating agent according to the present invention comprises a lubricant, a functional improver, and an emulsifier.
[0007]
As the lubricant, a polyether compound or a mixture of a polyether compound and a (poly) ether ester compound is used. As the polyether compound, one having an average molecular weight of 500 to 20000 is preferably used.
[0008]
Examples of the polyether compounds include polyether monools, polyether diols, polyether triols and the like, each having a polyoxyalkylene group in the molecule, and among them, 1 to 3 carbon atoms having 1 to 18 carbon atoms. A polyether compound in which an alkylene oxide having 2 to 4 carbon atoms is added to the hydroxy compound in a block shape or a random shape is preferable.
[0009]
The (poly) ether ester compound includes a (poly) ether compound in which an alkylene oxide having 2 to 4 carbon atoms is added to a 1-3 valent aliphatic alcohol having 4 to 26 carbon atoms, and 4 to 26 carbon atoms. (Poly) ether ester compound obtained by esterification with an aliphatic carboxylic acid of (2), (poly) ether compound obtained by adding an alkylene oxide having 2 to 4 carbon atoms to a trivalent aromatic alcohol, and 4 to 4 carbon atoms (Poly) ether ester compound esterified with 26 aliphatic carboxylic acid, 3) (poly) ether compound obtained by adding alkylene oxide of 2 to 4 carbon atoms to aliphatic alcohol of 4 to 26 carbon atoms, and aromatic Examples include (poly) ether ester compounds obtained by esterification with carboxylic acid.
[0010]
As the functional improver, a lithium salt of an aliphatic carboxylic acid is used as at least a part thereof. Although details will be described later, other functional improvers other than the lithium salt of the aliphatic carboxylic acid include 1) anionic surfactants such as organic sulfonates and organic fatty acid salts, and lauryltrimethylammonium ethosulphate. Cationic surfactants such as, antistatic agents such as amphoteric surfactants such as octyldimethylammonioacetate, etc. 2) oiliness improvers such as organic phosphates and fatty acids 3) average molecular weight of 1500 to 3000 as the main chain A polyether-modified silicone having a polydimethylsiloxane chain and a polyoxyalkylene chain having an average molecular weight of 700 to 5000 as a side chain, a permeability improver such as a surfactant having a perfluoroalkyl group, 4) a polyether polyester, etc. 5) Extreme pressure addition of organotitanium compounds, organophosphorus compounds, etc. Agent, 6) a phenolic, phosphite-based, thioether-based antioxidants of the amine and the like, 7) antirust agents.
[0011]
A nonionic surfactant is used as the emulsifier. Examples of such nonionic surfactants include 1) polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene alkyl ester, polyoxyalkylene castor oil, polyoxyalkylene alkyl amino ether, and the like. Nonionic surfactant having oxyalkylene group, 2) Nonionic surfactant of polyhydric alcohol partial ester type such as sorbitan monolaurate, sorbitan trioleate, glycerin monolaurate, diglycerin dilaurate, 3) A product obtained by adding an alkylene oxide to a partial ester of a 3-6 valent alcohol and a fatty acid, a partial ester or a complete ester of a 3-6 valent alcohol added with an alkylene oxide and a fatty acid, a 3-6 valent alcohol and a hydride The esters of carboxymethyl fatty acids such as those obtained by adding an alkylene oxide, polyoxyalkylene polyhydric alcohol fatty acid ester type nonionic surface active agents. Among these, a polyoxyethylene alkyl ether having a polyoxyethylene group having 3 to 15 repeating oxyethylene groups and an alkyl group having 8 to 18 carbon atoms in the molecule is preferable.
[0012]
As described above, the treatment agent for synthetic fibers according to the present invention contains a lithium salt of an aliphatic carboxylic acid as at least a part of the functional improver. Examples of aliphatic carboxylic acids that form such lithium salts are 1) formic acid, acetic acid, propionic acid, caproic acid, caprylic acid, 2-ethylhexanoic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid. Acid, stearic acid, isostearic acid, behenic acid, oleic acid, erucic acid, linoleic acid, acrylic acid, methacrylic acid and other aliphatic monocarboxylic acids, 2) oxalic acid, malonic acid, succinic acid, alkenyl succinic acid, adipic acid And azelaic acid, sebacic acid, undecanedioic acid, maleic acid, citric acid, and aliphatic polycarboxylic acids such as 1,2,3,4-butanetetracarboxylic acid.
[0013]
Among the aliphatic carboxylic acids exemplified above, aliphatic monocarboxylic acids having 6 to 22 carbon atoms and aliphatic dicarboxylic acids having 6 to 22 carbon atoms are preferable.
[0014]
The lithium salt of the aliphatic carboxylic acid can be obtained by a neutralization reaction between the aliphatic carboxylic acid and lithium hydroxide as exemplified above.
[0015]
As described above, the synthetic fiber treating agent according to the present invention contains a polyether compound or a mixture of a polyether compound and a (poly) ether ester compound as a lubricant, and at least a functional improver. It contains a lithium salt of an aliphatic carboxylic acid as a part, and further contains a nonionic surfactant as an emulsifier, and if necessary, a functional improver other than the above-mentioned lithium salt. It contains 90 to 99% by weight of a lubricant, contains 0.01 to 0.5% by weight of the above lithium salt as lithium, and the balance is an emulsifier, It contains a functional improver other than the lithium salt described above.
[0016]
Next, the synthetic fiber processing method according to the present invention will be described. In the synthetic fiber treatment method according to the present invention, the synthetic fiber treatment agent according to the present invention as described above is 0.1 to 3% by weight, preferably 0.3 to 1% by weight, based on the synthetic fiber. It is the method of making it adhere. Examples of the process for attaching the synthetic fiber treating agent to the synthetic fiber include a spinning process, a process of simultaneously spinning and stretching, and the like. Examples of the method for attaching the synthetic fiber treating agent to the synthetic fiber include a roller oiling method, a guide oiling method using a metering pump, an immersion oiling method, and a spray oiling method. Further, examples of the mode for attaching the synthetic fiber treating agent to the synthetic fiber include neat, organic solvent solution, aqueous liquid and the like, and aqueous liquid is preferable. Also when attaching the aqueous solution of the synthetic fiber treatment agent, the synthetic fiber treatment agent is made to adhere to 0.1 to 3% by weight, preferably 0.3 to 1% by weight as the synthetic fiber treatment agent.
[0017]
Synthetic fibers to which the synthetic fiber treatment method according to the present invention is applied include polyester fibers, polyamide fibers, polyacrylic fibers, polyolefin fibers, polyurethane fibers, and the like. The effect of the present invention is high when applied to fiber.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the treatment agent for synthetic fiber of the present invention include the following 1) to 3).
1) 93% by weight of the following lubricant (A-1), 1% by weight of the following lithium salt (B-1), 5% by weight of the following emulsifier (C-1) and the following functional improver ( D-1) 1% by weight (total 100% by weight) treatment agent for synthetic fibers (containing 0.047% by weight as lithium).
Lubricant (A-1): Ethylene oxide (hereinafter referred to as EO) and propylene oxide (hereinafter referred to as PO) are randomly added to butyl alcohol in a ratio of EO / PO = 50/50 (weight ratio). Polyether monool / dodecyl alcohol having a number average molecular weight of 1000, obtained by randomly adding EO and PO to the polyether monool / butyl alcohol having a number average molecular weight of 2500 at a ratio of EO / PO = 50/50 (weight ratio). A mixture of polyether triol having a number average molecular weight of 1400 = 40/20/30 (weight ratio) obtained by adding EO and PO in a block form at a ratio of EO / PO = 35/65 (weight ratio) to lithium salt (B- 1): Lithium oleate Emulsifier (C-1): Polyoxyethylene (7 mol) lauryl ether Function improver (D-1) Polyether-modified silicone [0019] having a polyoxyethylene chain having an average molecular weight of 3000 as and side chains having a polydimethyl siloxane chain with an average molecular weight 2300 as the main chain
2) 93% by weight of the lubricant (A-1), 1% by weight of the following lithium salt (B-2), 5% by weight of the emulsifier (C-1) and the functional improver ( D-1) 1% by weight (total 100% by weight) treatment agent for synthetic fibers (containing 0.058% by weight as lithium).
Lithium salt (B-2): Dilithium octenyl succinate
3) 93% by weight of the following lubricant (A-2), 1% by weight of the following lithium salt (B-3), 5% by weight of the above emulsifier (C-1) and the above functional improver ( D-1) 1% by weight (total of 100% by weight) treatment agent for synthetic fibers (containing 0.025% by weight as lithium).
Lubricant (A-2): Polyoxyethylene (8 mol) ester of lauryl ether and decanoic acid / ethylene glycol and EO and PO added randomly in a ratio of EO / PO = 50/50 (weight ratio) To a polyether monool / lauryl alcohol having a number average molecular weight of 1500 obtained by randomly adding EO and PO to a polyether diol / butyl alcohol having a number average molecular weight of 5000 at a ratio of EO / PO = 40/60 (weight ratio). Mixture of polyether monool having a number average molecular weight of 1400 = 10/10/50/30 (weight ratio) in which EO and PO are added in blocks at a ratio of EO / PO = 35/65 (weight ratio) lithium salt ( B-3): Lithium dodecylthiopropionate
Further, as an embodiment of the synthetic fiber processing method according to the present invention, the following 4) may be mentioned.
4) The synthetic fiber treatment agent in any one of the above 1) to 3) is made into an aqueous liquid, and the treatment agent for synthetic fiber is 0.5% by weight with respect to polyethylene terephthalate fiber spun from this aqueous liquid. A method for treating synthetic fibers to be adhered.
[0022]
Hereinafter, in order to make the configuration and effects of the present invention more specific, examples and the like will be described. However, the present invention is not limited to these examples. In the following examples and the like, parts means parts by weight, and% means% by weight.
[0023]
【Example】
Test Category 1 (Preparation of synthetic fiber treatment agent)
Example 1 {Preparation of synthetic fiber treating agent (P-1)}
93 parts of the following lubricant (A-1), 1 part of the following lithium salt (B-1), 5 parts of the following emulsifier (C-1) and 1 part of the following functional improver (D-1) are homogeneous. The synthetic fiber treating agent (P-1) of Example 1 was prepared by mixing.
Lubricant (A-1): EO and PO added to butyl alcohol at a ratio of EO / PO = 50/50 (weight ratio) at random. Polyether monool / butyl alcohol having a number average molecular weight of 2500 and EO EO / PO = 35/65 (weight ratio) to polyether monool / dodecyl alcohol having a number average molecular weight of 1000, in which PO is randomly added at a ratio of EO / PO = 50/50 (weight ratio). ) Polyether monool having a number average molecular weight of 1400 added in a block ratio at a ratio of 40/20/30 (weight ratio) Lithium salt (B-1): Lithium oleate Emulsifier (C-1): Polyoxy Ethylene (7 mol) lauryl ether Functional improver (D-1): having a polydimethylsiloxane chain having an average molecular weight of 2300 as the main chain and a side chain Polyether-modified silicone [0024] having a polyoxyethylene chain having an average molecular weight of 3000 Te
Examples 2 and 3 and Comparative Examples 1 to 11 {Preparation of treating agents for synthetic fibers (P-2), (P-3) and (R-1) to (R-11)}
In the same manner as the synthetic fiber treatment agent (P-1) of Example 1, the synthetic fiber treatment agents (P-2) and (P-3) of Examples 2 and 3 and the synthetic fibers of Comparative Examples 1 to 11 Treatment agents (R-1) to (R-11) were prepared. The contents of the treating agent for synthetic fibers prepared in each example including Example 1 are shown in Table 1.
[0025]
[Table 1]
[0026]
In Table 1,
A-1: EO and PO were added to butyl alcohol at a ratio of EO / PO = 50/50 (weight ratio) at random, and EO and PO were added to polyether monool / butyl alcohol having a number average molecular weight of 2500. EO and PO at a ratio of EO / PO = 35/65 (weight ratio) to a polyether monool / lauryl alcohol having a number average molecular weight of 1000 randomly added at a ratio of / PO = 50/50 (weight ratio). Polyether monool having a number average molecular weight of 1400 added in a block form = 40/20/30 (weight ratio) A-2: Polyoxyethylene (8 mol) ester of lauryl ether and decanoic acid / ethylene glycol with EO And PO are randomly added in a ratio of EO / PO = 50/50 (weight ratio). EO / PO is added to EO / PO at a ratio of EO / PO = 40/60 (weight ratio) at a ratio of EO / PO to butyl alcohol / butyl alcohol. Polyether monool having a number average molecular weight of 1400 added in blocks at a ratio of PO = 35/65 (weight ratio) = 10/10/50/30 (weight ratio)
B-1: Lithium oleate B-2: Dilithium octenyl succinate B-3: Lithium dodecylthiopropionate B-4: Dilithium terephthalate
C-1: Polyoxyethylene (7 mol) lauryl ether
D-1: Polyether-modified silicone having a polydimethylsiloxane chain having an average molecular weight of 2300 as a main chain and a polyoxyethylene chain having an average molecular weight of 3000 as a side chain D-2: Potassium oleate D-3: Sodium oleate D-4: Potassium dodecyl sulfonate D-5: Sodium dodecyl sulfonate D-6: Potassium dodecyl phosphate D-7: Sodium dodecyl phosphate D-8: Potassium dodecyl sulfate D-9: Sodium dodecyl sulfate D-10: Tetraethylammonium oleate 【0030】
Test Category 2 (Adhesion of synthetic fiber treating agent to synthetic fibers, false twisting and evaluation)
-Adhesion of synthetic fiber treating agent to synthetic fiber Each synthetic fiber treating agent prepared in Test Category 1 and dilution water were uniformly mixed to obtain a 10% aqueous liquid. A polyethylene terephthalate chip having an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% is dried by a conventional method, then spun at 295 ° C. using an extruder, discharged from the die, and cooled and solidified. Then, the prepared 10% aqueous liquid was adhered by a guide oiling method using a metering pump so that the amount of adhesion as a treatment agent for synthetic fibers was the amount of adhesion described in Table 2, and then converged with a guide, Winding was carried out at a speed of 3000 m / min without mechanical drawing, and a partially drawn yarn of 128 dtex 36 filaments was obtained as a 10 kg-thawed cake.
[0031]
-False twisting Using the cake obtained above, false twisting was performed under false twisting conditions using the following contact heater false twisting machine.
.. False twisting conditions with contact heater type false twisting machine:
Using a contact heater type false twisting machine (SDS1200B manufactured by Ernest Scragg and Sons), processing speed = 800 m / min, draw ratio = 1.522, twisting method = triaxial disk circumscribing friction method (entry side guide) 1 disc, 1 exit guide disc, 7 hard polyurethane discs), twisting side heater = 2.5 m in length, surface temperature 212 ° C, untwisting side heater = none, target twist number = 3300 T / m Then, false twisting was performed by continuous operation for 25 days.
[0032]
Evaluation of Fluff In the false twisting process, before winding the false twisted yarn, the number of fluffs per hour was measured with a fluff counting device (DT-105 manufactured by Toray Engineering Co., Ltd.) and evaluated according to the following criteria. did. The results are summarized in Table 2.
AA: The number of fluffs measured is 0 A: The number of fluffs measured is 1-5 B: The number of fluffs measured is 6-9 C: The number of fluffs measured is 10 or more
-Evaluation of yarn breakage In the false twisting process described above, the number of yarn breakage that occurred during 25 days of continuous operation was converted to the number of times per hour, and evaluated according to the following criteria. The results are summarized in Table 2.
AA: The number of yarn breaks that occurred was 0
A: Number of yarn breaks that occurred was less than 1 (excluding 0)
B: Number of occurrences of thread breakage is 1 or more and less than 3. C: Number of occurrences of thread breakage is 3 or more.
[Table 2]
[0035]
In Table 2,
Adhesion amount: Adhesion% as a synthetic fiber treatment for synthetic fibers
[0036]
【The invention's effect】
As is apparent from the above, the present invention described above has an effect of sufficiently preventing the occurrence of fluff and yarn breakage in response to the recent increase in the spinning speed and processing speed of synthetic fibers.
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