200415200 玖、發明說明 【發明所屬之技術領域】 本發明係關於一種對於在氯水環境下的劣化具有優越安 定性之聚胺甲酸酯組成物與聚胺甲酸酯彈性纖維，及含有 上述聚胺甲酸酯彈性纖維所構成之游泳衣與短褲。 【先前技術】 由聚異氰酸酯、較低分子量之聚合物二醇及低分子量之 多官能性活性氫化合物所製造之聚胺甲酸酯，係因其機械 性質優越、易於加工等理由，而被使用於發泡體、彈性體 、塗料、合成皮革、纖維等之廣泛用途上。其中作爲聚異 氰酸酯而使用4，4 ’ -二苯甲烷二異氰酸酯等芳香族異氰酸酯 所製得之聚胺甲酸酯彈性纖維，係具有高橡膠彈性、拉伸 應力、回復性等機械性質，且關於熱特性方面也具有優越 的性質。因此，近年來與聚醯胺、聚酯等各種纖維交編， 以作爲衣服等的襯底、短襪、運動服裝等衣料用機能素材 而曰益被廣泛使用。 然而，若將如此般主要是使用由鏈段化聚胺甲酸酯所構 成之彈性纖維的製品，例如失禁短褲等曝露於含有氯系漂 白劑之洗潔劑等氯水環境下，則將引起鏈段化聚胺甲酸酯 之物理性質大幅度下降，已是眾所皆知者。再者，聚胺甲 酸酯彈性纖維交編成游泳衣時，長時間在含有活性氯濃度 爲0.5〜3 ppm之游泳池中，吾等已知會導致纖維之物理性 質降低。 爲改善如上述聚胺甲酸酯彈性纖維對於氯的耐久性，直 200415200 到目前爲止已經有各種添加劑之提案。例如在日本專利第 1 3 1 62 6 7號公報曾記載有氧化鋅。氧化鋅的確是能顯現出 優異的耐氯效果。然而卻具有在酸性條件下的織物染色製 程中會從纖維溶解而析出之缺點，其結果導致纖維之耐氯 性下降，並且造成因爲由該染色製程所產生之含鋅廢液’ 使得利用生物活性的排水淨化處理廠中之細菌會死亡之重 大問題。此外在日本專利特開昭第5 9- 1 3 3 號公報曾揭 示水滑石類化合物，在專利第2887402號公報及專利特開 平第5 -7 8 5 69號公報則曾揭示經由高級脂肪酸或矽烷偶合 劑所被覆之水滑石類化合物等。然而，經由添加水滑石類 化合物所得之耐氯性並不足夠。有鑑於如此之先前技術背 景，本發明之目的係在於提供一種具有優越的耐氯性之聚 胺甲酸酯組成物及聚胺甲酸酯彈性纖維。另外，也提供一 種使用含有上述聚胺甲酸酯彈性纖維的伸縮性編織物之具 有耐氯性之游泳衣與短褲。 【發明內容】 本發明人等爲解決上述課題，經專心檢討結果發現藉由 在聚胺甲酸酯添加經由特定物質予以表面處理之水滑石類 化合物，即可達成上述目的，藉此完成本發明。亦即，本 發明係包括以下之構成： 1 . 一種聚胺甲酸酯組成物，其特徵爲含有以水玻璃予以表 面處理之水滑石類化合物。 2 ·如上述第1項之聚胺甲酸酯組成物，其係含有平均粒徑 爲2微米以下’且粒徑2微米以上之粒子爲1 〇體積％ 200415200 以下之水滑石類化合物。 3·如上述第1或2項之聚胺甲酸酯組成物，其水滑石類化 合物係含有〇 > 5〜5重量％。 4 · 一種聚胺甲酸酯彈性纖維，其係包含第1至3項中任一 項之聚胺甲酸酯組成物。 5· —種游泳衣，其特徵爲至少一部分係使用包含上述第4 項之聚胺甲酸酯彈性纖維之伸縮性編織物所構成。 6 ·如上述第5項之游泳衣，其伸縮性編織物係使用選自聚 酯系纖維、聚醯胺系纖維、纖維素系纖維中一種以上之 _ 纖維作爲非伸縮性編織物所構成。 7 ·如上述第5或6項之游泳衣，其伸縮性編織物係將聚胺 甲酸酯彈性纖維作爲（裸）絲或其複合彈性絲而交編或 交織所構成。 8 · —種短褲，其特徵爲至少一部分係使用包含上述第4項 之聚胺甲酸酯彈性纖維之伸縮性編織物所構成。 9 ·如上述第8項之短褲，其伸縮性編織物係使用選自聚酯 系纖維、聚醯胺系纖維 '纖維素系纖維中一種以上之纖 維作爲非伸縮性編織物所構成。 1 〇 ·如上述第8或9項之游泳衣，其伸縮性編織物係將聚胺 甲酸酯彈性纖維作爲（裸）絲或其複合彈性絲而交編或 交織所構成。 以下具體說明本發明。 作爲本發明之水滑石類化合物的表面處理劑所使用之水 玻璃，係將矽砂（si〇2)與鹼灰（Na2C03)混合成Na2C03/Si02 200415200 =1 . 6〜3 . 8左右，並以經加熱溶融者之濃厚水溶液，作爲耐 熱性接著劑或黏土泥漿之去絮凝劑等而爲一般所利用。水 滑石類化合物若未經表面處理，則將在後續加工製程中容 易引起染料對於水滑石類化合物之吸附、或來自聚胺甲酸 酯彈性纖維的水滑石類化合物之脫落，使得最終製品之耐 氯性下降。另外，使用水滑石類化合物以外的化合物之表 面處理時，則對於在後續加工製程中對於水滑石類化合物 的染料吸附、或來自聚胺甲酸酯彈性纖維的水滑石類化合 物之脫落，其防止效果並不足，且最終製品之耐氯性也不 足。 本發明之水滑石類化合物，係以平均粒徑爲2微米以下 ，且粒徑2微米以上之粒子爲1 0重量％以下爲佳。平均粒 徑若超過2微米以上，則爲顯現出耐氯效果所需之水滑石 粒子之有效表面積將變小，因此無法獲得滿意的耐氯效果 。而且，粒徑2微米以上之粒子若超過1 0重量％，則將導 致頻繁發生過濾器堵塞、斷絲，因此不可能實施長期穩定 的紡絲。 本發明之水滑石類化合物的含量爲0.5〜5重量％，較佳爲 2〜4重量％，以聚胺甲酸酯之重量爲基準。若添加量爲〇.5 重量％以下，則其耐氯效果不足夠；反之，若添加量超過5 重量％時，則將會對於纖維物理性性質造成不良影響。 在本發明使用之聚胺甲酸酯，係包括聚醚系、聚酯系、 聚碳酸酯系等習知的聚胺甲酸酯。如此之聚胺甲酸酯，係 使聚異氰酸酯、聚合物二醇、以及視需要的低分子多官能 200415200 活性氫化合物進行反應即可製得。 聚異氰酸酯可使用例如：4 5 4 ’ -二苯甲烷二異氰酸醋、二 異氰酸-1，4 -伸苯基酯、二異氰酸-2,4 -甲苯酯、二異氰酸_ 2，6 -甲苯酯、二異氰酸伸基酯、二異氰酸六亞甲基酯、 二異氰酸-1，4 -環己烷酯、二異氰酸-4，4，-二環己基甲院醋、 二異氰酸亞二甲苯基酯等之一種或該等之混合物。較佳爲 4,45-二苯甲烷二異氰酸酯。 聚合物二醇，其在兩末端具有羥基之分子量爲600〜7,000 之實質上爲線性之聚合物則可使用，例如··聚四亞甲基醚 | 二醇、聚伸丙基醚二醇、聚伸乙基二醇、聚五亞甲基醚二 醇等聚醚系多元醇；或共聚醚（四亞甲基-亞新戊基）二醇 、共聚醚（四亞甲基-2-甲基伸丁基）二醇、共聚酸（四亞 甲基-2,3-二甲基伸丁基）二醇、共聚醚（四亞甲基-2,2-二 甲基伸丁基）二醇等含有兩種以上之碳原子數6以下的伸 烷基之共聚醚系多元醇類；或由己二酸、癸二酸、馬來酸 、衣康酸、壬二酸、丙二酸、琥珀酸、戊二酸、辛二酸、 十二院二甲酸、/3 -甲基己二酸、六氫對苯二甲酸等二元酸 馨 之一種或兩種以上之混合物，與乙二醇、1，2 -丙二醇、1，4 丁二醇、1，6-己二醇、新戊二醇、1，4-二羥甲基環己烷等二 醇之一種或兩種以上之混合物所製得之聚酯系多元醇類； 或聚醚-酯二醇、聚內酯二醇、聚碳酸酯二醇等任意多元醇 類。 低分子多官能活性氫化合物可使用分子中具有兩個以上 能與異氰酸基進行反應的活性氫基之化合物（鏈延長劑） -10- 200415200 。鏈延長劑係包括：例如伸乙二胺、〗，2_二胺基丙烷、i，3_ —胺基丙烷、1，4 -二胺基丙烷、二伸乙三胺、三伸乙四胺 等聚胺；或乙二醇、丁二醇等多元醇、聚醯胼、聚半卡肼 、聚經胺、水、肼等之一種或兩種以上之混合物。 另外，也可與鏈延長劑一起作爲鏈段終止劑，而倂用在 分子中只具有一個能與異氰酸基進行反應的活性氫基之化 合物。在分子中只具有一個活性氫基之化合物，係包括： 二乙胺、二甲胺、二丁胺、二乙醇胺等二烷基胺類；或乙 胺、正丙胺、異丙胺、正丁胺、第三丁胺、乙醇胺等一烷 基胺類；或正丁醇等一醇類；伸乙二胺與丙酮之1 :丨反應 物等二胺與酮之脫水縮合物，N，N -二甲基肼等之一種或兩 種以上之混合物。 聚胺甲酸酯係可以習知的方法進行聚合。例如可以熔融 聚合、溶液聚合等任意方法及其等之組合來進行聚合。另 外，也可採取使原料匯集混合以進行反應的一步法，或預 先形成聚合物後予以鏈延長之預聚物法等任意方法。 另外，也可在聚合反應中任意階段添加適量的醋酸、對-甲苯磺酸等有機酸或碳酸氣體以作爲反應速率調整劑。該 等反應速率調整劑較佳爲在預聚物反應結束後、且在鏈延 長反應結束前添加。此外，該等反應速率調整劑也可與鏈 延長劑或鏈段終止劑混合而加入。 經聚合之聚胺甲酸酯可以習知的方法進行成型，以供使 用於各種不同目的之用途。並且以乾式紡絲法、熔融紡絲 法、濕式紡絲法等習知的方法予以紡絲，以製造目標纖維 -11 - 200415200 。本發明之水滑石類化合物可在紡絲前之任意階段添加。 並且也可將任意安定劑，例如紫外線吸吸劑、抗氧化劑、 氣體黃變防止劑、光安定劑、著色劑、消光劑、塡充劑等 以單獨或視需要予以組合而使用。 接著’就本發明之游泳衣及短褲加以說明。適合供使用 於本發明之游泳衣或短褲的伸縮性編織物，爲如上述的聚 胺甲酸酯彈性纖維，與將選自聚酯系纖維、聚醯胺系纖維 、纖維素系纖維中一種以上之纖維作爲非伸縮性編織物而 使用者。 聚胺甲酸酯彈性纖維係通常以（裸）絲、或單層包覆絲 、 層包覆絲、空氣包覆絲、包芯絲 '合股絲等複合彈性 絲之狀態而使用。 聚酯系纖維係指一般廣泛周知之聚酯系纖維，其較具代 表性者可例示：聚對苯二甲酸乙二醇酯、聚對苯二甲酸丁 二醇酯、聚對苯二甲酸三亞甲基酯、以及該等之陽離子可 染型改性物等。 本發明所使用之聚醯胺系纖維，係指耐綸6、耐綸66、 耐綸46、以及該等之陽離子可染型改性物或聚醯胺/聚酯複 合纖維，可使用任意之纖度、剖面形狀者。 至於本發明所使用之纖維素系纖維，係指棉、螺縈或該 等與聚酯系纖維等之混紡絲，棉、螺縈與耐綸/聚酯長纖維 之複合絲等，可選用任意纖度。 另外，也可使用羊毛、開士米、阿爾帕卡（羊I它）等獸 毛纖維、絹絲、丙烯酸系纖維、普羅米克斯等非彈性絲等 200415200 ，並無特殊限制。 本發明之游泳衣，係使用由聚胺甲酸酯彈性纖維與上述 聚醋系纖維、聚醯胺系纖維、以及纖維素系纖維等非彈性 纖維所構成之伸縮性編織物者，在圓編針織物，則爲緯平 針織物、雙面針織物、雙反面針織物或其等之變形針織物 ;在經編針織物，則爲翠可特經編織物、拉舍爾針織物， 以及織物等，惟並不受特殊限制。經編組織，在翠可特經 編織物之情形時，可例示：經絨-經平組織、反經絨-經平 組織、雙梳櫛經平組織、雙梳櫛經緞組織；在拉舍爾經編 織物之情形時，可例示：彈性織物、半彈性織物、假鍛子 織物、翠可特經編織物等。最近作爲盤繞裙等游泳衣之附 屬品等而也使用織物坯布。將織物使用於游泳衣之一部分 也不妨。 【實施方式】 實施發明之最佳形熊 接著，以實施例及比較例具體說明本發明，但是本發明 並非局限於此等。此外，實施例中之「份」及「％」，係 分別代表「重量份」及「重量％」。首先說明在本發明所 使用之測試評估方法如下。 (平均粒徑測定法） 將水滑石類化合物製備成1重量％之水漿，並以粒度分布 測定裝置〔堀場製作所LA-9 1 0〕進行測定。 (聚胺甲酸酯彈性纖維之耐氯性測試評估試驗法） 使用一緒式編織機（小池製作所製）將44分特（dtex)之 200415200 聚胺甲酸酯彈性纖維製成爲線圈橫列1 〇 8 / 2 · 5 4公分，線圈 縱行1 7 8/2 · 5 4公分之筒編織物。對於該試料連續實施一般 耐綸染色之模型後加工處理，即9 5。(：、1分鐘之精練處理 ’ 1 90 °C、1分鐘之預固定處理，在耐綸染色用之染料及助 劑之存在下、93。€、30分鐘之染色處理，在蘇打灰之存在 下、70°C、10分鐘之皂煮處理，以及18〇。€、1分鐘之最 終固定處理，以作爲測試評估用試料。將此試料浸漬於保 持著活性氯濃度3 p p m、p Η 7 · 5、水温3 0。C之水槽1 2 0小 時。將經處理後之試料以蒸餾水予以洗淨，經風乾後，將 | 織物予以解編，然後使用張力試驗機〔ORIENTEX公司製 RT Μ - 2 5 0〕以測定單絲強度。耐氯性係藉由計算經氯處理 後之強度保持率來測試評估。 (游泳衣或短褲之耐氯性測試評估方法） 將使用於游泳衣或短褲的身坯布之伸縮性編織物，以能 成爲縱1 4公分、橫7公分之方式貼上於紗框，然後使其坯 布以縱橫均予以伸長I.4倍之狀態下，浸漬於流速每秒1.4 公尺之圓形水槽（保持於活性氯濃度3 ppm、pH 7.5、水溫 φ 3 Ο Υ之水槽）1 20小時。經處理後之試料以蒸餾水洗淨、 風乾後，測定伸長力。耐氯性係藉由計算經氯處理後之應 力保持率（與氯未處理試料測定値之比的百分率）來加以 測試評估。伸長力之測定係使用在張力試驗機〔 ORIENTEX公司製RTM-25 0〕上裝有布帛用空氣夾頭之裝 置，並使試料寬度切成爲2.5公分，使夾頭間距設定爲10 公分。以經方向反覆實施三次之80%伸長回復，以求出第 -14 - 200415200 三次之每2.5公分之應力。測定係實施兩次’以求其平均 値。 (紡絲安定性測試評估法） 經使聚胺甲酸酯溶液消泡後，使其通過網眼3 0微米之過 濾器，由孔徑0.3毫米、孔數4 口之紡嘴擠出’進行乾式 紡絲，以製得44分特之聚胺甲酸酯彈性纖維。以600 m/m 2.54公分捲取，並測試評估連續紡絲10天時之紡絲安定性 。測試評估係以◎:可實施非常安定的紡絲，〇：可實施 安定的紡絲，△:稀少發生斷絲，以及X :斷絲頻繁之四 等級進行。 〔實施例1、2，比較例1〜4〕 首先說明聚胺甲酸酯彈性纖維之具體實施例。 實施例1 將數平均分子量1,800之聚四亞甲基醚乙二醇酯238.42 份與4,4’-二苯甲烷二異氰酸酯52.91份在N2氣流下80 °C 進行反應3小時，以製得兩末端爲異氰酸基之預聚物。將 預聚物冷卻至40 °C後，加入N，N-二甲基乙醯胺52 0.09份 ，以使其溶解，並冷卻至10 °C。將伸乙二胺4.73份與二 乙胺0.43份溶解於Ν，Ν·二甲基乙醯胺101.27份之溶液， 一次加入於正在高速攪拌之預聚物溶液，進行混合以使反 應完結。對此溶液加入作爲抗氧化劑之對-氯甲基苯乙烯/ 對-甲酚共聚物2.96份、作爲紫外線吸吸劑之〔2- ( 2-羥基 -3,5-二-第三戊基）苯基〕苯并三唑〔KEM IS ORB 74/ CHEMIPRO (譯音）化成公司〕1.48份、以及對於聚胺甲 200415200 酸酯爲3.5%之經平均粒徑0.3微米之以水玻璃予以表面處 理之水滑石，並予以攪拌混合，以製得聚胺甲酸酯溶液。 將聚胺甲酸酯溶液消泡後，由孔徑0.3毫米、孔數4 口之 紡嘴擠出於加熱成2S0 °C之空氣在流通之紡絲筒內，並邊 對於纖維給予6重量％之油劑，邊以6 0 0 m/m 2.5 4公分予 以捲取，以製得4 4分特之聚胺甲酸酯彈性纖維。 糸d果結絲安定性非常良好，無斷絲情事。另外，經製得 之聚胺甲酸酯彈性纖維係對於長時間氯水處理具有優越的 耐久性者。測試評估之結果展示於表1。 馨 實施例2 除取代實施例1之水滑石而使用平均粒徑爲1 .〇微米之水 滑石之外，其餘則實施與實施例1相同操作，以製得聚胺 甲酸酯彈性纖維。 結果紡絲安定性良好。另外，經製得之聚胺甲酸酯彈性 纖維係對於長時間氯水處理具有優越的耐久性者。測試評 估之結果展示於表1。 比較例1 · 除取代實施例1之水滑石而使用平均粒徑爲0.3微米之未 經以水玻璃施加表面處理之水滑石之外，其餘則實施與實 施例1相同操作，以製得聚胺甲酸酯彈性纖維。 結果紡絲安定性雖然良好，但是經製得之聚胺甲酸酯弓單 性纖維卻對於長時間氯水處理之耐久性差。測試評估之結 果展示於表1。 比較例2 -16 - 200415200 除取代實施例1之水滑石而使用平均粒徑爲〇. 3微米之經 以硬脂酸施加表面處理之水滑石之外，其餘則實施與貫施 例】相同操作，以製得聚胺甲酸酯彈性纖維。 結果於紡絲時即發生斷絲，因此紡絲安定性不良。另外 ’經製得之聚胺甲酸酯彈性纖維係對於長時間的氯水處理 之耐久性稍差。測試評估之結果展示於表1。 比較例3 除取代實施例1之水滑石而使用平均粒徑爲2.5微米之水 滑石之外，其餘則實施與實施例1相同操作，以製得聚胺 _ 甲酸酯彈性纖維。 結果於紡絲時斷絲頻繁，因此紡絲安定性不良。另外， 經製得之聚胺甲酸酯彈性纖維係對於長時間的氯水處理之 耐久性差。測試評估之結果展示於表1。 比較例4 除將實施例1之水滑石對於聚胺甲酸酯使用0.3 %之外， 其餘則實施與實施例1相同操作，以製得聚胺甲酸酯彈性 纖維。 _ 結果紡絲安定性雖然爲非常良好，但是經製得之聚胺甲 酸酯彈性纖維卻對於長時間氯水處理之耐久性極差。測試 評估之結果展不於表1。 -17- 200415200 表1 水滑石 耐氯性 紡絲 表面 平均 粒徑2微米 添加量 強度保持率 安定性 處理 粒徑 以上之粒子 (vol%) (%) (%) 實施例1 水玻璃 0.3 1.9 3.5 90 ◎ 實施例2 水玻璃 1.0 6.6 3.5 87 〇 比較例1 Μ j \\\ 0.3 1.9 3.5 38 〇 比較例2 硬脂酸 0.3 1.9 3.5 61 Δ 比較例3 水玻璃 2.5 57.0 3.5 55 X 比較例4 水玻璃 0.3 1.9 0.3 脆化嚴重，因 ◎ 此不能測定 〔實施例3、4、比較例5〜8〕 接著，說明有關游泳衣之具體實施例。 實施例3 組合經由上述實施例1所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、4〇分鐘）。染色後 ’經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度1 08線圈橫列/2J4公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果在織物的整經、編織時，史潘德克斯纖維並無斷絲 ，運轉操作性非常良好。並且經製得之織物係對於長時間 200415200 氯水處理具有優越的耐久性者。測試評估之結果展示於表 2 ° 實施例4 組合經由上述實施例2所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果在織物的整經、編織時，史潘德克斯並無斷絲，運 轉操作性非常良好。並且經製得之織物係對於長時間氯水 處理具有優越的耐久性者。測試評估之結果展示於表2。 實施例5 組合經由上述比較例1所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度1 0 8線圈橫列/2 · 5 4公分、緯密度6 3線圈縱行/2.5 4公 200415200 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果雖然在織物的整經、編織時’史潘德克斯並無斷絲 ，運轉操作性非常良好，但是經製得之織物卻對於長時間 氯水處理之耐久性差。測試評估之結果展示於表2。 比較例6 組合經由上述比較例2所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度1 08線圈橫列/2.54公分、緯密度63線圏縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果在織物的整經、編織時，史潘德克斯之斷絲或長絲 之稀弄織疵較多，因此運轉操作性不太好。並且經製得之 織物係對於長時間氯水處理的耐久性稍差。測試評估之結 果展示於表2。 比較例7 組合經由上述比較例3所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之还布。經將此埋布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 -20- 200415200 通常分散染料予以染色（溫度130°C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果在織物的整經、編織時，史潘德克斯之斷絲或長絲 之稀弄織疵較多，因此運轉操作性不太好。並且經製得之 織物係對於長時間氯水處理的耐久性差。測試評估之結果 展示於表2。 比較例8 組合經由上述比較例4所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣。 結果雖然在織物的整經、編織時，史潘德克斯並無斷絲 ，運轉操作性良好，但是經製得之織物卻對於長時間氯水 處理的耐久性相當差。測試評估之結果展示於表2。 -21 - 200415200 表2200415200 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a polyurethane composition and a polyurethane elastic fiber having excellent stability against deterioration in a chlorine water environment, and containing the polymer Swimwear and shorts made of urethane elastic fibers. [Previous technology] Polyurethanes made from polyisocyanate, lower molecular weight polymer diols, and low molecular weight polyfunctional active hydrogen compounds are used because of their superior mechanical properties and ease of processing. Used in a wide range of applications including foams, elastomers, coatings, synthetic leather, and fibers. Polyurethane elastic fibers prepared by using aromatic isocyanates such as 4,4′-diphenylmethane diisocyanate as the polyisocyanate have mechanical properties such as high rubber elasticity, tensile stress, and resilience. It also has superior properties in terms of thermal characteristics. Therefore, in recent years, it has been interwoven with various fibers such as polyamide and polyester to be widely used as functional materials for clothing, such as substrates, socks, and sportswear. However, exposing products such as elastic fibers mainly composed of segmented polyurethane, such as incontinence shorts, to chlorine water, such as detergents containing chlorine-based bleach, will cause It is well known that the physical properties of segmented polyurethane are greatly reduced. Furthermore, when polyurethane elastic fibers are interlaced into swimwear, we have been known for a long time in swimming pools containing active chlorine at a concentration of 0.5 to 3 ppm, and we have known that the physical properties of the fibers are degraded. In order to improve the durability of the polyurethane elastic fibers as described above to chlorine, various additives have been proposed so far. For example, Japanese Patent No. 131 62 67 discloses zinc oxide. Zinc oxide does exhibit excellent chlorine resistance. However, it has the disadvantage of dissolving and precipitating from the fibers during the fabric dyeing process under acidic conditions. As a result, the chlorine resistance of the fiber is reduced, and the zinc-containing waste liquid generated by the dyeing process is used to make use of biological activity. A major problem with the death of bacteria in wastewater purification treatment plants. In addition, Japanese Patent Laid-Open No. 5-9-133 has disclosed hydrotalcite compounds, and Japanese Patent Laid-Open No. 2887402 and Japanese Patent Laid-Open No. 5-7-8 5 69 have disclosed the use of higher fatty acids or silanes. Hydrotalcite-like compounds covered by the coupling agent. However, the chlorine resistance obtained by adding a hydrotalcite-based compound is not sufficient. In view of such a prior art background, an object of the present invention is to provide a polyurethane composition and a polyurethane elastic fiber having superior chlorine resistance. Also provided is a swimwear and shorts having chlorine resistance using a stretchable knitted fabric containing the above-mentioned polyurethane elastic fiber. [Summary of the Invention] In order to solve the above-mentioned problems, the present inventors have intensively reviewed the results and found that by adding a hydrotalcite compound that is surface-treated with a specific substance to polyurethane, the above-mentioned object can be achieved, thereby completing the present invention . That is, the present invention includes the following constitutions: 1. A polyurethane composition characterized by containing a hydrotalcite-based compound surface-treated with water glass. 2. The polyurethane composition according to the above item 1, which contains a hydrotalcite-based compound having an average particle diameter of 2 m or less' and particles having a particle diameter of 2 m or more of 10 vol% 200415200 or less. 3. The polyurethane composition according to item 1 or 2 above, wherein the hydrotalcite-based compound contains 0 > 5 to 5% by weight. 4. A polyurethane elastic fiber comprising the polyurethane composition according to any one of items 1 to 3. 5. A swimwear characterized in that at least a part is made of a stretchable knitted fabric comprising a polyurethane elastic fiber according to item 4 above. 6 · The swimwear according to item 5 above, wherein the stretchable knitted fabric is composed of one or more kinds of fibers selected from polyester-based fibers, polyamide-based fibers, and cellulose-based fibers as a non-stretchable knitted fabric. 7 · The swimwear according to item 5 or 6 above, wherein the stretchable knitted fabric is formed by interlacing or interlacing polyurethane elastic fibers as (naked) yarns or composite elastic yarns thereof. 8. A type of shorts characterized in that at least a part of the shorts is made of a stretchable knitted fabric containing polyurethane elastic fibers according to item 4 above. 9. The shorts as described in item 8 above, wherein the stretchable knitted fabric is composed of one or more fibers selected from polyester-based fibers and polyamide-based fibers and cellulose fibers as non-stretchable knitted fabrics. 1 0. The swimwear according to item 8 or 9 above, wherein the stretchable knitted fabric is formed by interlacing or interlacing polyurethane elastic fibers as (naked) yarns or composite elastic yarns thereof. The present invention will be specifically described below. The water glass used as the surface treatment agent of the hydrotalcite-based compound of the present invention is a mixture of silica sand (si〇2) and alkali ash (Na2C03) to Na2C03 / Si02 200415200 = 1.6 to 3.8, and A thick aqueous solution that has been melted by heating is generally used as a heat-resistant adhesive or a deflocculant for clay mud. If the hydrotalcite compound is not surface-treated, it will easily cause the dye to adsorb the hydrotalcite compound in the subsequent processing process, or the hydrotalcite compound from the polyurethane elastic fiber to fall off, making the final product resistant. Chlorine resistance decreases. In addition, when a surface treatment using a compound other than the hydrotalcite-based compound is used, the dye absorption of the hydrotalcite-based compound in the subsequent processing process or the shedding of the hydrotalcite-based compound from the polyurethane elastic fiber is prevented. The effect is not sufficient, and the chlorine resistance of the final product is also insufficient. The hydrotalcite-based compound of the present invention preferably has an average particle diameter of 2 μm or less, and the particles having a particle diameter of 2 μm or more are preferably 10% by weight or less. If the average particle diameter exceeds 2 micrometers or more, the effective surface area of the hydrotalcite particles required to exhibit the chlorine resistance effect will be reduced, so that a satisfactory chlorine resistance effect cannot be obtained. In addition, if particles having a particle diameter of 2 micrometers or more exceed 10% by weight, filter clogging and yarn breakage frequently occur, and it is impossible to perform long-term stable spinning. The content of the hydrotalcite-based compound of the present invention is 0.5 to 5% by weight, preferably 2 to 4% by weight, based on the weight of the polyurethane. If the added amount is 0.5% by weight or less, the chlorine resistance is insufficient; on the other hand, if the added amount exceeds 5% by weight, the physical properties of the fiber will be adversely affected. The polyurethanes used in the present invention include conventional polyurethanes such as polyether, polyester, and polycarbonate. Such a polyurethane can be obtained by reacting polyisocyanate, polymer diol, and optionally a low-molecular polyfunctional 200415200 active hydrogen compound. As the polyisocyanate, for example, 4 5 4 '-diphenylmethane diisocyanate, diisocyanate-1,4-phenylene ester, diisocyanate-2,4-toluate, and diisocyanate can be used. _ 2,6-Tolyl ester, diisocyanate, hexamethylene diisocyanate, diisocyanate-1,4-cyclohexane, diisocyanate-4,4,- One or a mixture of dicyclohexyl methyl vinegar, xylylene diisocyanate and the like. 4,45-diphenylmethane diisocyanate is preferred. Polymer diols, which are essentially linear polymers with molecular weights of 600 to 7,000 with hydroxyl groups at both ends, can be used, such as polytetramethylene ether | diols, polypropylidene ether glycols, Polyether polyols such as polyethylene glycol and polypentamethylene ether glycol; or copolyether (tetramethylene-neopentyl) glycol, copolyether (tetramethylene-2-methyl) (Butylene) diol, copolymerized acid (tetramethylene-2,3-dimethylbutylene) diol, copolyether (tetramethylene-2,2-dimethylbutylene) Copolyether polyols containing two or more kinds of alkylenes having 6 or less carbon atoms; or adipic acid, sebacic acid, maleic acid, itaconic acid, azelaic acid, malonic acid, amber Acid, glutaric acid, suberic acid, dodecanedioic acid, / 3-methyl adipic acid, hexahydroterephthalic acid and other dibasic acids, such as ethylene glycol, One or two or more diols such as 1,2-propanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,4-dimethylolcyclohexane, etc. Obtained polyester polyols; or Ether - diol, polylactone diols, polycarbonate diols and other polyhydric alcohols arbitrary. As the low-molecular polyfunctional active hydrogen compound, a compound (chain extender) having two or more active hydrogen groups capable of reacting with an isocyanate group in the molecule can be used -10- 200415200. Chain extenders include, for example, ethylenediamine, 2-diaminopropane, i, 3-aminopropane, 1,4-diaminopropane, ethylenediamine, triethyleneethylenetetramine, etc. Polyamine; or one or two or more kinds of polyhydric alcohols such as ethylene glycol and butanediol, polyfluorene, polyhemicarbazine, polyamine, water, hydrazine, etc. In addition, it can be used as a chain terminator together with a chain extender, and fluorene is used in a compound having only one active hydrogen group capable of reacting with an isocyanate group in the molecule. Compounds with only one active hydrogen group in the molecule include: diethylamines such as diethylamine, dimethylamine, dibutylamine, and diethanolamine; or ethylamine, n-propylamine, isopropylamine, n-butylamine, Monoalkylamines such as tertiary butylamine and ethanolamine; or monoalcohols such as n-butanol; dehydration condensates of diamine and ketone such as ethylene diamine and acetone 1: 丨 reactants, N, N -dimethyl One or two or more hydrazines. The polyurethane is polymerized by a known method. For example, the polymerization may be carried out by any method such as melt polymerization and solution polymerization, and a combination thereof. Alternatively, any method such as a one-step method in which raw materials are collected and mixed for reaction, or a prepolymer method in which a polymer is formed in advance and then chain-extended may be adopted. In addition, an appropriate amount of an organic acid such as acetic acid or p-toluenesulfonic acid or a carbonic acid gas may be added at any stage in the polymerization reaction as a reaction rate adjuster. These reaction rate modifiers are preferably added after the prepolymer reaction is completed and before the chain extension reaction is completed. In addition, these reaction rate modifiers may be added in combination with a chain extender or a segment terminator. The polymerized polyurethane can be formed in a conventional manner for use in various purposes. And it is spun by conventional methods such as dry spinning method, melt spinning method and wet spinning method to manufacture the target fiber -11-200415200. The hydrotalcite-based compound of the present invention may be added at any stage before spinning. Further, any stabilizer such as an ultraviolet absorbent, an antioxidant, a gas yellowing preventive agent, a light stabilizer, a colorant, a matting agent, a filler and the like may be used alone or in combination as necessary. Next, the swimwear and shorts of the present invention will be described. The stretch knit suitable for use in the swimwear or shorts of the present invention is the polyurethane elastic fiber as described above, and one selected from polyester-based fibers, polyamide-based fibers, and cellulose-based fibers. The above fibers are used as a non-stretchable knitted fabric. Polyurethane elastic fibers are generally used in the state of (bare) yarns, or composite elastic yarns such as single-layer coated yarns, layer-coated yarns, air-coated yarns, and core-spun yarns. Polyester fiber refers to generally known polyester fiber, and its representative examples include polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate. Methyl esters, and cationic dyeable modifiers. The polyamide-based fibers used in the present invention refer to nylon 6, nylon 66, nylon 46, and the cationic dyeable modifiers or polyamide / polyester composite fibers, and any of them can be used. Fineness, cross-sectional shape. As for the cellulose fiber used in the present invention, it refers to cotton, snail, or a blended yarn with polyester fiber, etc., cotton, snail, and nylon / polyester long fiber composite yarn, etc. Fineness. In addition, animal hair fibers such as wool, cashmere, alpaca (sheep) etc., silk yarns, acrylic fibers, non-elastic yarns such as Promex 200415200 can also be used, and there are no special restrictions. The swimwear of the present invention is made of a stretch knitted fabric composed of polyurethane elastic fibers and the above-mentioned non-elastic fibers such as polyester-based fibers, polyamide-based fibers, and cellulose-based fibers. Fabrics are weft jersey, double knit, double back knit, or their deformed knits; in warp knits, Tricot knits, Raschel knits, and fabrics, etc .; There are no special restrictions. In the case of Tricot special warp knitted fabrics, warp knitting can be exemplified: warp-warp-knitting, reverse warp-knitting-knitting, double-knitting warp-knitting, double-knitting warp-knitting; In the case of the warp knitted fabric, examples include elastic fabric, semi-elastic fabric, fake forged fabric, and Tricot fabric. Recently, fabric grey fabrics have been used as accessories for swimwear such as coiled skirts. It is also good to use the fabric in a part of the swimwear. [Embodiment] Best Shaped Bear for Carrying Out the Invention The present invention will be specifically described with reference to examples and comparative examples, but the present invention is not limited to these. In addition, "parts" and "%" in the examples represent "parts by weight" and "% by weight", respectively. First, the test evaluation method used in the present invention will be described below. (Average particle size measurement method) The hydrotalcite-based compound was prepared into a 1% by weight water slurry, and measured using a particle size distribution measuring device [Horiba, Ltd. LA-9 1 0]. (Chlorine resistance test evaluation test method for polyurethane elastic fibers) 4415 dtex 200415200 polyurethane elastic fibers were made into a coil course using an I-type knitting machine (manufactured by Koike Seisakusho). 8/2 · 5 4 centimeters, the coils traverse 1 7 8/2 · 5 4 centimeters tube knitted fabric. For this sample, the general post-processing of nylon dyeing model is performed continuously, that is, 9 5. (:, 1 minute scouring treatment '1 90 ° C, 1 minute pre-fixation treatment, in the presence of dyes and additives for nylon dyeing, 93. €, 30 minutes dyeing treatment, in the presence of soda ash Soap treatment at 70 ° C, 10 minutes, and final fixation treatment at 18 °., 1 minute, as a test evaluation sample. This sample was immersed in an active chlorine concentration of 3 ppm, p Η 7 · 5. The water temperature is 30 ° C for 120 hours. The treated sample is washed with distilled water. After air-drying, the fabric is disassembled, and then a tensile tester [RT Μ-2 manufactured by ORIENTEX Corporation] is used. 5 0] to measure the strength of the monofilament. The chlorine resistance is tested and evaluated by calculating the strength retention rate after the chlorine treatment. (Chlorine resistance test evaluation method for swimwear or shorts) Will be used in the body of swimwear or shorts The stretchable knitted fabric of the gray fabric is pasted on the gauze frame so as to be 14 cm in length and 7 cm in width, and then the gray fabric is stretched 1.4 times in both the longitudinal and horizontal directions, and immersed in a flow rate of 1.4 cm per second Ruler's round water tank (maintained at an active chlorine concentration of 3 ppm , PH 7.5, water tank with a water temperature of φ 3 Υ) for 1 to 20 hours. The treated samples were washed with distilled water, air-dried, and the elongation was measured. The chlorine resistance was calculated by calculating the stress retention rate after the chlorine treatment ( The percentage of 値 measured with chlorine untreated sample was measured and evaluated. The elongation was measured by using a device equipped with an air chuck for cloth on a tensile tester [RTM-25 0 manufactured by ORIENTEX Corporation], and making the sample The width is cut to 2.5 cm, and the chuck pitch is set to 10 cm. The 80% elongation recovery is repeated three times in the warp direction to obtain the stress of 2.5 cm three times in the -14-200415200 three times. The measurement is performed twice. (The spinning stability test evaluation method) After defoaming the polyurethane solution, it was passed through a 30-micron mesh filter, and a spinning nozzle with a diameter of 0.3 mm and a number of 4 holes was used. Extrude 'for dry spinning to obtain 44 dtex polyurethane elastic fibers. Take up at 600 m / m 2.54 cm and test and evaluate spinning stability during continuous spinning for 10 days. Test and evaluation Based on ◎: Very stable spinning can be performed, 〇: Stable spinning can be performed, △: Rare breakage occurs, and X: Four levels of breakage occur frequently. [Examples 1, 2, and Comparative Examples 1 to 4] First, description will be made of polyurethane elastic fibers. Specific example: Example 1 A reaction of 238.42 parts of polytetramethylene ether glycol with a number average molecular weight of 1,800 and 52.91 parts of 4,4'-diphenylmethane diisocyanate was carried out under a N2 gas flow at 80 ° C for 3 hours. A prepolymer having isocyanate groups at both ends was prepared. After the prepolymer was cooled to 40 ° C, 0.09 parts of N, N-dimethylacetamide was added to dissolve and cooled to 10 ° C. Dissolve 4.73 parts of ethylenediamine and 0.43 parts of diethylamine in 101.27 parts of N, N-dimethylacetamidamine, and add them to the prepolymer solution being stirred at high speed, and mix them to complete the reaction. To this solution, 2.96 parts of p-chloromethylstyrene / p-cresol copolymer as an antioxidant and [2- (2-hydroxy-3,5-di-tertiaryamyl) as an ultraviolet absorbent were added. Phenyl] benzotriazole [KEM IS ORB 74 / CHEMIPRO Chemical Co., Ltd.] 1.48 parts, and water with a mean particle diameter of 0.3 micron, which is 3.5% for polyurethane 200415200 acid ester, surface-treated with water glass The talc is stirred and mixed to prepare a polyurethane solution. After defoaming the polyurethane solution, the spinning nozzle with a hole diameter of 0.3 mm and a number of 4 holes was extruded in a spinning cylinder heated to 2S0 ° C in air, and the fiber was given 6% by weight The oil agent is taken up at 600 m / m 2.5 and 4 cm to obtain 44 dtex polyurethane elastic fiber.糸 d fruit knot silk stability is very good, no broken silk. In addition, the polyurethane elastic fibers obtained have excellent durability against long-term chlorine water treatment. The test evaluation results are shown in Table 1. Example 2 Except that instead of the hydrotalcite of Example 1, hydrotalcite having an average particle diameter of 1.0 micron was used, the same operation was performed as in Example 1 to obtain a polyurethane elastic fiber. As a result, spinning stability was good. In addition, the polyurethane elastic fibers obtained have excellent durability against long-term chlorine water treatment. The results of the test evaluation are shown in Table 1. Comparative Example 1 Except that instead of the hydrotalcite of Example 1, a hydrotalcite having an average particle diameter of 0.3 micrometers without surface treatment with water glass was used, and the rest of the same operations were performed as in Example 1 to obtain a polyamine. Formate elastic fiber. As a result, although the spinning stability was good, the polyurethane arch unisex fibers obtained had poor durability against long-term chlorine water treatment. The results of the test evaluation are shown in Table 1. Comparative Examples 2 -16-200415200 The same operation as in the conventional example was carried out except that hydrotalcite with an average particle size of 0.3 micron was used instead of the hydrotalcite of Example 1, and the surface treatment was performed with stearic acid. To obtain polyurethane elastic fibers. As a result, yarn breakage occurs during spinning, so spinning stability is poor. In addition, the polyurethane elastic fibers obtained are slightly inferior in durability to long-term chlorine water treatment. The test evaluation results are shown in Table 1. Comparative Example 3 A hydrotalcite having an average particle diameter of 2.5 μm was used in place of the hydrotalcite of Example 1, and the same operation as in Example 1 was performed to obtain a polyamine formate elastic fiber. As a result, the yarn breaks frequently during spinning, so spinning stability is poor. In addition, the polyurethane elastic fibers obtained have poor durability against long-term chlorine water treatment. The test evaluation results are shown in Table 1. Comparative Example 4 The same operation as in Example 1 was performed except that the hydrotalcite of Example 1 was used for polyurethane in an amount of 0.3% to obtain a polyurethane elastic fiber. _ Although the spinning stability is very good, the polyurethane elastic fibers obtained have extremely poor durability against long-term chlorine water treatment. The results of the test evaluation are not shown in Table 1. -17- 200415200 Table 1 Hydrotalcite Chloride-resistant Chloride Spinning Surface Average Particle Size 2 Micron Additive Strength Retention Rate Stability Treatment Particles Above Particle Size (vol%) (%) (%) Example 1 Water Glass 0.3 1.9 3.5 90 ◎ Example 2 Water glass 1.0 6.6 3.5 87 〇 Comparative example 1 M j \\\ 0.3 1.9 3.5 38 〇 Comparative example 2 Stearic acid 0.3 1.9 3.5 61 Δ Comparative example 3 Water glass 2.5 57.0 3.5 55 X Comparative example 4 Water The glass 0.3 1.9 0.3 was severely embrittled, so ◎ could not be measured [Examples 3, 4, and Comparative Examples 5 to 8] Next, specific examples of swimwear will be described. Example 3 A 44 dtex of polyurethane elastic fiber obtained through the above Example 1 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatment under normal dyeing processing conditions, and then dyed with a normal disperse dye (temperature: 130 ° C, 40 minutes). After dyeing ', a gray cloth with a warp density of 10 08 coils per 2J4 cm and a weft density of 63 coils vertical per 2.54 cm was prepared through various processes such as soaping, dehydration and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, during the warping and weaving of the fabric, the Spendex fibers did not break, and the operation was very good. And the fabrics are those with excellent durability for long-term 200415200 chlorine water treatment. The results of the test and evaluation are shown in Table 2 ° Example 4 A combination of 44 dtex of polyurethane elastic fiber obtained through the above Example 2 and 56 dtex-24 of polyester filament was used, and CURL MAYER ( (Transliteration) The company's Tricot special warp knitting machine (HKS2 · 32) is woven into a bidirectional grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing conditions, and then dyed with a disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a warp density of 108 coils / 2.54 cm and a weft density of 63 coils / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, Spandex did not break yarns during warping and knitting of the fabric, and the operability was very good. And the fabrics are those with excellent durability for long-term chlorine water treatment. The test evaluation results are shown in Table 2. Example 5 A 44 dtex yarn of polyurethane elastic fiber obtained through the above Comparative Example 1 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing conditions, and then dyed with a disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a density of 108 loops / 2.54 cm and a weft density of 6 3 coils / 2.5 4cm 200415200 cents were prepared through processes such as soap boiling, dehydration, and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, although the 'Spandex' did not break yarns during warping and weaving of the fabric, and the running operability was very good, the fabric obtained after the treatment had poor durability against long-term chlorine water treatment. The test evaluation results are shown in Table 2. Comparative Example 6 A 44 dtex yarn of polyurethane elastic fiber obtained through the above Comparative Example 2 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing conditions, and then dyed with a disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey fabrics with a warp density of 10 08 rows / 2.54 cm and a weft density of 63 lines / longitudinal lines / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, during the warping and knitting of the fabric, there are many broken yarns or spun filaments in Spendex, so the operability is not good. In addition, the fabrics produced are slightly less durable to long-term chlorine water treatment. The results of the test evaluation are shown in Table 2. Comparative Example 7 A 44 dtex of polyurethane elastic fiber obtained through the above Comparative Example 3 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · No. 32), weaving warp velvet-warp knitting fabric, Tricot special warp knitting fabrics are returned in both directions. After carrying out scouring, relaxation, and false fixing treatment under the usual dyeing processing conditions, this buried cloth is dyed with -20-200415200 usually disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a warp density of 108 coils / 2.54 cm and a weft density of 63 coils / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, during the warping and knitting of the fabric, there are many broken yarns or spun filaments in Spendex, so the operability is not good. In addition, the obtained fabrics have poor durability against long-term chlorine water treatment. The test evaluation results are shown in Table 2. Comparative Example 8 A 44 dtex of polyurethane elastic fiber obtained through the above Comparative Example 4 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing conditions, and then dyed with a disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a warp density of 108 coils / 2.54 cm and a weft density of 63 coils / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to make a swimwear. As a result, although Spandex did not break yarns during the warping and weaving of the fabric, and the operation was good, the durability of the fabric obtained after long-term chlorine water treatment was quite poor. The test evaluation results are shown in Table 2. -21-200415200 table 2
編織運轉操作性 耐氯性 實施例3 〇 實施例4 良好 〜 〇 比較例5 良好 ^ ____ X 比較例6 斷絲頻繁 ~ Δ 比較例7 斷絲頻繁 Δ 比較例8 良好 ~ X 〇：應力保持率 50%以上 △:應力保持率 30%以上、50%以下 X :應力保持率 30%以下 〔實施例5、6、比較例9〜12〕 接著，說明有關短褲之具體實施例。 實施例5 組合經由上述實施例1所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆驰、假固定處理後，以 通常分散染料予以染色（溫度130 °C、4〇分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣用內短 褲。 結果在織物的整經、編織時’史潘德克斯並無斷絲’運 -22- 200415200 轉操作性非常良好。並且經製得之織物係對於長時間氯水 處理具有優越的耐久性者。測試評估之結果展示於表3。 實施例6 組合經由上述實施例2所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成失禁用短褲。 結果在織物的整經、編織時，史潘德克斯並無斷絲，運 轉操作性非常良好。並且經製得之織物係對於長時間氯水 處理具有優越的耐久性者。測試評估之結果展示於表3。 达較例9 組合經由上述比較例1所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 娀-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆驰、假固定處理後’以 通常分散染料予以染色（溫度130 °C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程’製得經 密度1 〇 8線圈橫列/2 · 5 4公分、緯密度6 3線圈縱行/2 · 5 4公 200415200 分之坯布。將該織物使用於身坯布而製作成游泳衣用內短 褲。 結果雖然在織物的整經、編織時，史潘德克斯並無斷絲 ，運轉操作性良好，但是經製得之織物卻對於長時間氯水 處理之耐久性差。測試評估之結果展示於表3。 比較例1 0 組合經由上述比較例2所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130。(：、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣用內短 褲。 結果在織物的整經、編織時，史潘德克斯之斷絲或長絲 之稀弄織疵較多，因此運轉操作性不太好。並且經製得之 織物係對於長時間氯水處理的耐久性稍差。測試評估之結 果展示於表3。 比較例1 1 組合經由上述比較例3所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 . 32號），編織成經 -24- 200415200 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定，處理後，以 通常分散染料予以染色（溫度130 °C、4〇分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度108線圈橫列/2.54公分、緯密度63線圈縱行/2.54公 分之坯布。將該織物使用於身坯布而製作成游泳衣用內短 褲。 結果在織物的整經、編織時，史潘德克斯之斷絲或長絲 之稀弄織疵較多，因此運轉操作性不太好。並且經製得之 織物係對於長時間氯水處理的耐久性差。測試評估之結果 展示於表3。 比較例1 2 組合經由上述比較例4所得之聚胺甲酸酯彈性纖維44分 特的絲，與聚酯之56分特-24長絲，並使用CURL MAYER (譯音）公司製翠可特經編機（HKS2 · 32號），編織成經 絨-經平組織之翠可特經編織物雙向之坯布。經將此坯布以 通常染色加工條件下實施精練、鬆弛、假固定處理後，以 通常分散染料予以染色（溫度130°C、40分鐘）。染色後 ，經由通常皂煮、脫水、最終固定處理之各製程，製得經 密度1 0 8線圈橫列/2 · 5 4公分、緯密度6 3線圈縱行/2.5 4公 分之坯布。將該織物使用於身坯布而製作成游泳衣用內短 褲。 結果雖然在織物的整經、編織時，史潘德克斯並無斷絲 ，運轉操作性良好’但是經製得之織物卻對於長時間氯水 -25- 200415200 處理的耐久性相當差。測試評估之結果展示於表Knitting operation operability Chlorine resistance Example 3 〇 Example 4 Good ~ 〇 Comparative Example 5 Good ^ ____ X Comparative Example 6 Frequent wire breaks ~ Δ Comparative Example 7 Frequent wire breaks Δ Comparative Example 8 Good ~ X 〇: Stress retention rate 50% or more △: Stress retention rate of 30% or more and 50% or less X: Stress retention rate of 30% or less [Examples 5, 6, and Comparative Examples 9 to 12] Next, specific examples of shorts will be described. Example 5 A 44 dtex of polyurethane elastic fiber obtained through the above Example 1 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatment under normal dyeing processing conditions, and then dyed with a normal disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a warp density of 108 coils / 2.54 cm and a weft density of 63 coils / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to produce panties for swimwear. As a result, during the warping and knitting of the fabric, 'Spendex does not break the yarn' and the operation is very good. And the fabrics are those with excellent durability for long-term chlorine water treatment. The test evaluation results are shown in Table 3. Example 6 A 44 dtex of polyurethane elastic fiber obtained through the above Example 2 and a 56 dtex-24 filament of polyester were combined, and a Tricot special warp knitted by CURL MAYER was used. Machine (HKS2 · 32), weaving into a two-way grey fabric of Tricot special warp-knitted fabric. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing conditions, and then dyed with a disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, grey cloths with a warp density of 108 coils / 2.54 cm and a weft density of 63 coils / 2.54 cm were prepared through processes such as soaping, dehydration, and final fixing. This fabric was used as a body fabric to produce incontinent shorts. As a result, Spandex did not break yarns during warping and knitting of the fabric, and the operability was very good. And the fabrics are those with excellent durability for long-term chlorine water treatment. The test evaluation results are shown in Table 3. Comparative Example 9 A 44 dtex of polyurethane elastic fiber obtained through the above Comparative Example 1 and a 56 dtex-24 filament of polyester were combined, and a Trike special warp made by CURL MAYER was used. Knitting machine (HKS2 · 32), weaved into a bidirectional grey fabric of the Tricot special warp knitting fabric with warp-knitting. This grey cloth was subjected to scouring, relaxation, and pseudo-fixing treatment under normal dyeing conditions, and then dyed with a normal disperse dye (temperature: 130 ° C, 40 minutes). After dyeing, through the processes of ordinary soap boiling, dehydration, and final fixing treatment, warp density of 1.08 coils in a row / 2.54 cm, and weft density of 6 3 coils in a row / 2.54 cm. Grey cloth. This fabric was used as a body fabric to produce panties for swimwear. As a result, although Spandex did not break yarns during the warping and weaving of the fabric, and the operation was good, the fabrics produced had poor durability against long-term chlorine water treatment. The test evaluation results are shown in Table 3. Comparative Example 1 0 A 44 dtex yarn of polyurethane elastic fiber obtained through the above Comparative Example 2 and a 56 dtex-24 filament of polyester were combined, and a Trike special warp made by CURL MAYER was used. Knitting machine (HKS2 · 32), weaved into a bidirectional grey fabric of warp-knitting and tricot knitting fabric. This grey cloth is subjected to scouring, relaxation, and pseudo-fixing treatments under normal dyeing processing conditions, and then dyed with ordinary disperse dyes (temperature 130. (:, 40 minutes). After dyeing, it is subjected to normal soaping, dehydration, and final fixing treatments. For each process, a grey fabric with a warp density of 108 coils per 2.54 cm and a weft density of 63 coils with a longitudinal width of 2.54 cm was produced. The fabric was used as a body fabric to make swimwear panties. As a result, the fabric was warped When weaving, Spandex has many broken yarns or filaments, so there is a lot of weaving defects, so the operability is not good. And the fabrics made are slightly inferior to the long-term chlorine water treatment. Test and evaluation The results are shown in Table 3. Comparative Example 1 1 The polyurethane elastic fiber 44 dtex obtained through the above Comparative Example 3 was combined with polyester 56 dtex-24 filament, and CURL MAYER (transliteration ) Trike special warp knitting machine (HKS 2.32) made by the company, weaved into bidirectional grey fabric of Trike special warp knitted fabric with warp-24-200415200. Refined, relaxed After the treatment, it is dyed with the usual disperse dye (temperature 130 ° C, 40 minutes). After dyeing, through the processes of ordinary soap boiling, dehydration, and final fixing treatment, a density of 108 coils is obtained. Gray fabric with 2.54 cm and weft density of 63 stitches / 2.54 cm. This fabric was used as a body fabric to make swim shorts. As a result, when the fabric was warped and knitted, the spandex filaments were broken or filaments. There are many rare and weaving defects, so the operability is not good. And the fabrics produced have poor durability against long-term chlorine water treatment. The results of the test and evaluation are shown in Table 3. Comparative Example 1 2 The combination passed the above comparison The 44 dtex yarn of polyurethane elastic fiber obtained in Example 4 and 56 dtex-24 filament of polyester were used in Tricot special warp knitting machine made by CURL MAYER (HKS2 · 32) , Weaving into a bidirectional grey fabric of warp-knitted tricot knitting fabric. After the scouring, relaxation, and false fixing treatment of this grey fabric under normal dyeing processing conditions, it is dyed with a disperse dye (temperature 130 ° C, 40 points ). After dyeing, through the processes of ordinary soap boiling, dehydration, and final fixing treatment, a grey fabric with a warp density of 108 loops / 2.54 cm and a weft density of 63 coils / 2.5 4 cm is obtained. This fabric was used as a body fabric to make swimwear panties. As a result, although Spendex did not break yarns during warping and knitting of the fabric, it had good operability. However, the obtained fabric was durable for a long time. Chlorine-25- 200415200 The durability of the treatment is quite poor. The test evaluation results are shown in the table
△:應力保持率 30%以上、50%以下 X :應力保持率 30%以下 產業上之利用件△: Stress retention rate of 30% to 50% X: Stress retention rate of 30% or less
若根據本發明’則已可製得具有優越的耐氯脆化性之聚 胺甲酸酯組成物與聚胺甲酸酯彈性纖維。另外，藉由使用 上述聚胺甲酸酯彈性纖維，已可提供使用於游泳池等之具 有優越的耐氯脆化性之游泳衣、或以游泳衣用內短褲或失 禁用短褲等爲代表之具有優越的耐氯脆化性之短褲。 〔圖式簡單說明〕 〇According to the present invention, a polyurethane composition and a polyurethane elastic fiber having excellent chlorine embrittlement resistance have been obtained. In addition, by using the above-mentioned polyurethane elastic fibers, it is possible to provide swimming suits having excellent resistance to chlorine embrittlement used in swimming pools or the like, including swim shorts or incontinent shorts. Shorts with superior resistance to chlorine embrittlement. [Schematic description] 〇