TWI815919B - 透氣彈性膜與層壓材料以及由其製備之製品 - Google Patents
透氣彈性膜與層壓材料以及由其製備之製品 Download PDFInfo
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- TWI815919B TWI815919B TW108123576A TW108123576A TWI815919B TW I815919 B TWI815919 B TW I815919B TW 108123576 A TW108123576 A TW 108123576A TW 108123576 A TW108123576 A TW 108123576A TW I815919 B TWI815919 B TW I815919B
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Abstract
一種透氣彈性膜包含特定量之聚烯烴彈性體,其具有0.860至0.890公克/立方公分之密度;聚氧化乙烯,其在25℃下在5重量%水溶液中具有30至115厘泊之布洛克菲爾德黏度(Brookfield viscosity);及親水性填充劑。如根據ASTM E398-2780所測定,所述膜具有至少1,000 g-mil/m2
-天之水蒸氣穿透率。亦揭示包含所述膜之複合層壓材料及製品。
Description
本發明關於一種透氣性與彈性之膜,特別為用於衛生應用。
水蒸氣可滲透之聚烯烴膜可用於各種應用中。例如,提供液體障壁但高水蒸氣穿透之膜廣泛用於例如衛生、醫療、防護服與建築市場。一次性衛生與醫療應用,諸如嬰兒尿布、成人失禁產品及透氣障壁手術服,需要具有成本效益之解決方案以實現高水蒸氣傳輸速率(WVTR)。據報導,依據應用與測試方法,典型的透氣性位準在500 g/m2
-天至20,000 g/m2
-天範圍內。
對於現有之透氣膜,將如CaCO3
之填充劑添加到聚乙烯中已用於製造高WVTR的透濕膜,但這需要後取向製程,諸如縱向取向或使用相互交叉或相互嚙合輥,亦稱為「環軋」,以在填充劑顆粒周圍產生空穴現象(參見例如WO2007/081548或WO1998/004397)。因此,此等膜本質上必須為非彈性的,並且其在拉伸時不應恢復到其原始形狀。
現有彈性膜包含低結晶度聚烯烴塑性體,其典型地具有僅30至50 g/m2
-天之WVTR值。此類膜往往具有黏性與彈性。其在衛生吸收產品中之典型用途為在開放式尿布中的封閉系統或彈性耳柄或在上拉式尿布中作為彈性側面板。此等膜被認為為非透氣的,但在拉伸時具有優異的彈性恢復。
使用對水分具有本質上更高位準之滲透性的聚合物亦可以實現高位準的WVTR。此等聚合物典型地具有親水性官能基,表現出對水蒸氣的高滲透性。例如,聚醯胺(耐綸)膜已經用於水果包裝應用中。此等膜確實提供高WVTR值(約300 g/m2
-天),以及韌性與良好光學特性,但與聚烯烴相比,其更昂貴且更難加工。因此,耐綸膜在大容量衛生吸收產品應用中不具有成本效益。
因此,仍然需要提供透氣性與彈性之膜,特別為用於衛生應用。
透氣彈性膜包括30至45重量%之聚烯烴彈性體,其具有0.860至0.890公克/立方公分之密度;10至15重量%之聚氧化乙烯,其在25℃下在5重量%水溶液中具有30至115厘泊之布洛克菲爾德黏度(Brookfield viscosity);及40至60重量%之親水性填充劑;其中重量%以膜中存在之材料的總重量%計;且其中如根據ASTM E398-2780所測定,膜具有至少1,000 g-mil/m2
-天之水蒸氣穿透率。
複合層壓材料包括透氣彈性膜。
衛生製品包括透氣彈性膜。
藉由以下附圖、具體實施方式、實例及申請專利範圍來例示上述及其它特徵。
本發明人意外地發現,當聚烯烴彈性體、聚氧化乙烯及親水性填充劑以特定量存在時,獲得透氣彈性膜。具體而言,透氣彈性膜包括30至45重量%之聚烯烴彈性體,其具有0.860至0.890公克/立方公分之密度;10至15重量%之聚氧化乙烯,其在25℃下在5重量%水溶液中具有30至115厘泊之布洛克菲爾德黏度;及40至60重量%之親水性填充劑。膜可具有彈性響應及透氣性之有利組合。
以膜中存在之材料的總重量%計,聚烯烴彈性體可以以30至45重量%之量存在。在此範圍內,聚烯烴彈性體可以以32至43重量%之量存在。
在本文實施例中,聚烯烴彈性體為基於乙烯之彈性體、基於丙烯之彈性體或其組合。基於乙烯或基於丙烯之彈性體可包含乙烯及丙烯之組合,且可進一步包含共聚單體,亦即不為乙烯或丙烯之另外可聚合單體。合適之共聚單體之實例包含具有3至30個、較佳3至20個碳原子之直鏈或分支鏈α-烯烴,諸如丙烯、1-丁烯、1-戊烯、3-甲基-1-丁烯、1-己烯、4-甲基-1-戊烯、3-甲基-1-戊烯、1-辛烯、1-癸烯、1-十二烯、1-十四烯、1-十六烯、1-十八烯及1-二十烯;具有3至30個、較佳3至20個碳原子之環烯烴,諸如環戊烯、環庚烯、降冰片烯、5-甲基-2-降冰片烯、四環十二烯及2-甲基-1,4,5,8-二甲橋-1,2,3,4,4a,5,8,8a-八氫萘;二烯烴及聚烯烴,諸如丁二烯、異戊二烯、4-甲基-1,3-戊二烯、1,3-戊二烯、1,4-戊二烯、1,5-己二烯、1,4-己二烯、1,3-己二烯、1,3-辛二烯、1,4-辛二烯、1,5-辛二烯、1,6-辛二烯、1,7-辛二烯、亞乙基降冰片烯、乙烯基降冰片烯、二環戊二烯、7-甲基-1,6-辛二烯、4-亞乙基-8-甲基-1,7-壬二烯及5,9-二甲基-1,4,8-癸三烯;及3-苯基丙烯、4-苯基丙烯、1,2-二氟乙烯、四氟乙烯及3,3,3-三氟-1-丙烯。
在一些實施例中,聚烯烴彈性體可為烯烴嵌段共聚物(OBC),其包括較佳以線性方式,而非以側接或接枝方式連接的兩個或兩個以上化學不同區域或鏈段(「嵌段」)。OBC可以經由鏈梭移方法產生,並且描述於US 7858706、US 7608668、US 7893166及US 7947793中。由於在一個實施例中梭移劑與其製備中使用之多種催化劑的組合的影響,OBC之特徵在於聚合度分佈性(PDI或Mw/Mn)、嵌段長度分佈及/或嵌段數分佈之獨特分佈。在一些實施例中,OBC可由式(AB)n表示,其中n為至少1,較佳大於1之整數,諸如2、5、10、20、50、100或更大,「A」為硬嵌段且「B」為軟嵌段或鏈段。
OBC可以包含各種量之硬及軟鏈段。「硬」鏈段為各自以OBC之重量計,其中乙烯或丙烯以大於95重量%(wt%)或大於98重量%、至多100重量%之量存在的聚合單元之嵌段。其餘部分可為共聚單體,其在一些實施例中可不存在。「軟」鏈段為各自以OBC之重量計,包含大於5重量%,或大於10重量%,或大於20重量%,或大於40重量%,或大於60重量%且可至多100重量%之量的共聚單體的聚合單元之嵌段。各自以OBC之重量計,軟鏈段能夠以1至99重量%,或10至90重量%,或30至70重量%,或40至60重量%,或45至55重量%之量存在於OBC中。反之,硬鏈段能夠以類似範圍存在。可以基於從差示掃描量熱法(DSC)或核磁共振(NMR)光譜獲得之數據計算軟鏈段及硬鏈段之重量%。此類方法及計算揭示於例如US 7608668中。
基於乙烯之彈性體
在一些實施例中,聚烯烴彈性體為基於乙烯之彈性體,其中乙烯占聚烯烴彈性體的多數莫耳分數,亦即乙烯占整個聚合物的至少50莫耳%(mol%)。更佳地,乙烯占至少60 mol%、至少70 mol%,或至少80 mol%,其中整個聚合物之實質上其餘部分包括至少一種其它共聚單體,其較佳為具有3個或3個以上碳原子之α-烯烴,例如丙烯或辛烯。在一些實施例中,基於乙烯之彈性體可以包括50至90 mol%,較佳60至85 mol%,或更佳65至80 mol%之乙烯。
在一個實施例中,基於乙烯之彈性體為包括聚合的乙烯及一種α烯烴為唯一的單體類型的乙烯/α-烯烴嵌段共聚物。在進一步之實施例中,α-烯烴為丙烯、1-丁烯、1-己烯或1-辛烯,較佳丙烯或1-辛烯,更佳1-辛烯。
各自如根據ASTM D1238在190℃下使用2.16 kg之負荷所量測,乙烯/α-烯烴嵌段共聚物可具有0.1至50公克/10分鐘(g/10 min),或0.3至30 g/10 min,或0.5至20 g/10 min,或0.5至10 g/10 min之熔融指數(MI或I2)。在一些實施例中,如根據ASTM D1238(230℃/2.16 kg)所量測,乙烯/α-烯烴嵌段共聚物可具有0.5至10 g/10 min之熔融指數。在一些實施例中,乙烯/α-烯烴嵌段共聚物可具有1.0至15 g/10 min之熔融指數,如根據ASTM D1238(230℃/2.16 kg)所量測。如根據ASTM D792所量測,基於乙烯之彈性體可具有0.860至0.890公克/立方公分(g/cc),或0.860至0.880 g/cc之密度。
合適之基於乙烯之彈性體的實例可包含INFUSE™
9007、INFUSE™
9010、INFUSE™
9107、INFUSE™
9100、INFUSE™
9507、INFUSE™
9500、INFUSE™
9807、ENGAGE™
8100、ENGAGE™
8200、ENGAGE™
8150、AFFINITY™
EG 8100G及AFFINITY™
EG 8200G,其均可購自陶氏化學公司(Dow Chemical Company)(米德蘭,密歇根州(Midland,MI));亦可包含QUEO™
6800LA、QUEO™
7001LA及QUEO™
8203,其均可購自Borealis(維也納,奧地利(Vienna,Austria));並且亦可包含EXACT™
4053及EXACT™
4049,其均可購自埃克森美孚化學公司(ExxonMobil Chemical Company)(Spring,TX)。
基於丙烯之彈性體
在一些實施例中,聚烯烴彈性體為基於丙烯之彈性體,其中丙烯占聚烯烴彈性體之多數莫耳分數,亦即丙烯占整個聚合物之至少50 mol%。更佳地,丙烯占至少60 mol%、至少70 mol%,或至少80 mol%,其中整個聚合物之實質上其餘部分包括乙烯或至少一種其它共聚單體,其為大於3個碳原子之α-烯烴,例如1-己烯或1-辛烯。在一些實施例中,基於丙烯之彈性體可包括50至90 mol%之丙烯,較佳60至85 mol%之丙烯,或更佳65至80 mol%之丙烯。當存在乙烯時,基於丙烯之彈性體可具有3至15 mol%之乙烯,或5至14 mol%之乙烯,或7至12 mol%之乙烯。在一些實施例中,除乙烯外不存在共聚單體。
如根據ASTM D1238在230℃下使用2.16 kg之負荷所量測,基於丙烯之彈性體可具有之熔體流動速率(MF),乙烯/α-烯烴嵌段共聚物可具有1.0至15 g/10 min之熔融指數。如根據ASTM D792所量測,基於丙烯之彈性體可具有0.860至0.890公克/立方公分(g/cc),或0.860至0.880 g/cc之密度。
合適之基於丙烯之彈性體的實例可包含VERSIFY™
2000、VERSIFY™
2200、VERSIFY™
2300、VERSIFY™
3200及VERSIFY™
3401,其可購自陶氏化學公司(米德蘭,密歇根州)或VISTAMAXX™
6102FL、VISTAMAXX™
3020FL,其可購自埃克森美孚化學公司(Spring,TX)。
聚氧化乙烯
除聚烯烴彈性體之外,膜包括聚氧化乙烯。本文所用之術語「聚氧化乙烯」包含環氧乙烷之均聚物及共聚物。共聚物可為藉由與至少一種其它氧化物混合的環氧乙烷聚合產生的無規共聚物,所述其它氧化物諸如1,2-環己烯環氧化物、1,2-丁烯環氧化物、烯丙基縮水甘油醚、甲基丙烯酸縮水甘油酯、表氯醇、1,3-丁二烯二環氧化物、氧化苯乙烯、4-乙烯基-基-環己烯1,2-環氧化物、4-(2-三甲氧基矽烷基乙基)-1,2-環氧環己烯及4-乙烯基-l-環己烯二環氧化物,較佳環氧烷,諸如環氧丙烷、1,2-丁烯環氧化物或環氧異丁烷。其它有用之環氧乙烷共聚物為藉由依序添加環氧乙烷及至少一種其它環氧烷產生之嵌段共聚物,其中在添加後續單體之前幾乎完全消耗第一單體。替代地,環氧乙烷共聚物可以以共聚形式包括環氧乙烷及另一種可共聚合單體,諸如丙烯酸甲酯、丙烯酸乙酯、己內酯、碳酸伸乙酯、碳酸三伸甲酯、1,3-二氧戊環、二氧化碳、硫化羰、四氫呋喃、甲基異氰酸酯或甲基異氰化物。較佳環氧乙烷共聚物為環氧乙烷與表氯醇之共聚物或環氧乙烷與環氧環己烷之共聚物。環氧乙烷共聚物通常包括至少50 mol%,較佳至少70 mol%,更佳至少85 mol%之環氧乙烷單元。最佳之環氧乙烷聚合物為環氧乙烷均聚物。
聚氧化乙烯在25℃下在5重量%水溶液中具有30至115 cP之布洛克菲爾德黏度。在一些實施例中,聚氧化乙烯在25℃下在5重量%水溶液中具有35至115厘泊(cP)或40至115厘泊(cP),或40至110 cP或40至100 cP或40至95 cP或45至95 cP或40至90 cP之布洛克菲爾德黏度。使用布洛克菲爾德DVII+旋轉黏度計(布洛克菲爾德工程(Brookfield Engineering),Middleboro,MA USA),5%水溶液,在25℃下測定聚氧化乙烯樣品的布魯克菲爾德黏度。特別地,藉由在無水異丙醇(125 mL)中攪拌以形成漿料,然後在25.0℃下在攪拌約3小時下添加水(475 mL)來製備樣品(30 g)以形成測試溶液。在將樣品在水浴中平衡至25.0℃ 30分鐘後,將特定幾何形狀之軸浸入水性樣品溶液中,並將良好控制的旋轉速度施加到軸上一段特定的時間。儀器量測連接到主軸上的彈簧上產生的黏性力(扭矩)。溶液黏度直接由此量測之力計算。例如POLYOX WSR N10及POLYOX WSR N80,使用50 rpm之軸1,其中讀取時間為0.5分鐘;對於樣品POLYOX WSR N750,使用10 rpm之軸2,其中讀取時間為1分鐘;並且對於POLYOX WSR N3000,使用2 rpm之軸1,其中讀取時間為5分鐘。
具有上述黏度之聚氧化乙烯可具有至少90,000公克/莫耳,或90,000至250,000公克/莫耳之總平均分子量。在一些實施例中,聚氧化乙烯可具有至少100,000公克/莫耳,或100,000至250,000公克/莫耳之分子量。聚氧化乙烯之分子量可以使用通常已知之技術(諸如凝膠滲透層析法、光散射或流變量測法)測定。例如,在25℃下在5重量%水溶液中布洛克菲爾德黏度為30至50 cP之聚氧化乙烯可具有100,000公克/莫耳之平均分子量。此聚氧化乙烯可以作為POLYOX WSR N10獲得,可購自陶氏化學公司。
以在膜中存在之材料的總重量%計,聚氧化乙烯以10至15重量%之量存在。在此範圍內,聚氧化乙烯可以以10至14重量%,或10至13重量%,或10至12重量%之量存在。
親水性填充劑
膜進一步包括親水性填充劑。如本文所用,術語「親水性填充劑」係指具有親水性表面官能度之填充劑。合適之填充劑為顆粒型有機或無機填充劑,在填充劑之表面下藉助於官能基之親水性,所述顆粒型有機或無機填充劑對水具有親和性。在一些實施例中,合適之填充劑可具有60°或更低,較佳20°或更低,更佳0°或低於用於方法的最小可偵測極限的水接觸角(根據ASTM D7334所測定)。用減小親水性之塗料或偶聯劑進行表面處理可損害聚氧化乙烯與填充劑表面之親和性,且因此為不希望的。
例示性親水性填充劑可包含但不限於三氫氧化鋁、硫酸鋇、碳酸鈣、硫酸鈣、碳酸鎂、三氫氧化鎂、矽藻土、白雲石、玻璃珠、陶瓷珠、高嶺土、雲母、珍珠岩、天然與合成二氧化矽、矽灰石、晶鬚、木粉、木質素、澱粉或其組合。在一些實施例中,親水性填充劑為碳酸鈣(CaCO3
),較佳未塗覆之碳酸鈣。
選擇填充劑粒度分佈,使得最大粒度不超過膜之厚度。本文所述之增強的WVTR的來源與藉由存在之聚氧化乙烯而非微孔度實現的增強的水分滲透相關。因此,不添加填充劑以在拉伸膜中產生孔隙,而實際上,添加填充劑以穩定聚氧化乙烯在膜中之分散,其與聚烯烴彈性體強烈地不相容。
以在膜中存在之材料的總重量%計,親水性填充劑以40至60重量%之量存在。在此範圍內,填充劑可以以40至55重量%、45至60重量%、45至55重量%或45至54重量%之量存在。
本發明之膜亦可包含一種或多種添加劑,諸如抗氧化劑(例如受阻酚類,諸如藉由汽巴嘉基(Ciba Geigy)供應之IRGANOX 1010或IRGANOX 1076)、亞磷酸酯(例如藉由汽巴嘉基供應之IRGAFOS 168)、黏附劑(例如,聚異丁烯(PIB))、亞膦酸二酯(例如藉由科萊恩(Clariant)供應之Standostab PEPQ™
)、顏料、著色劑、填充劑、TiO2
、抗靜電添加劑、阻燃劑、助滑劑、抗黏連劑、殺生物劑、抗微生物劑及其類似物。各添加劑可以在諸如以在膜中存在之材料的總重量%計的0.01至5.0重量%的位準下包含在膜中。
具有本文所述組合物之膜有利地表現出透氣性及彈性。具體而言,如根據ASTM E398-2780所測定,本發明之膜可具有至少1,000 g-mil/m2
-天之水蒸氣穿透率。例如,膜可具有1,000至5,000 g-mil/m2
-天,或1500至4,000 g-mil/m2
-天,或2,000至3,500 g-mil/m2
-天之WVTR。
在一些實施例中,如根據ASTM D5459-95及在200%伸長率下之預拉伸循環(在縱向上或在橫向上)後所測定,本發明之膜可具有在縱向上小於15%且在橫向上小於30%之永久變形。
可以使用例如吹塑、流延或擠出塗層製程製造膜。本發明之膜具有小於150,或125微米之總厚度,較佳在8-100微米範圍內,且在另一實施例中為12-50微米。
本發明之膜可用於製備複合層壓材料。在一些實施例中,本發明之膜可特別適用於各種衛生製品,例如用於嬰兒尿布或成人失禁產品的透氣膜、透氣障壁手術服及其它衛生與醫療應用。
藉由以下實例進一步說明本發明,所述實例為非限制性的。
實例
用於以下實例之材料在表1中總結。
表1
藉由使用BUSS混配機MDK/E 46(BUSS SA Basel,Switzerland)配混組分來製備以下實例之組合物。使用前,將未塗覆之碳酸鈣(CaCO3
)在70℃下乾燥過夜。使用壓縮空氣對用於托板輸送之熔體進行冷卻。配混條件總結在表2中。
表2
配混後,將組合物在30℃冷卻過夜,並且然後擠出成膜。使用配備有5個30毫米擠出機之實驗室Collin流延共擠出生產線來產生樣品。所有擠出機都使用相同的組合物,因此在各種情況下,所產生之膜在概念上等效於單層膜。用於產生所有膜樣品的製程條件在表3中給出。目標為50微米厚之膜。
表3
各實例之組合物總結在表4中,其中各組分之量以基於組合物總重量的重量%給出。
表4
使用Instron拉伸測試器,根據ASTM D5459-95測試由表4中之組合物製備的膜的彈性恢復。以200%之預拉伸循環進行彈性恢復。在釋放預拉伸樣品後,切割127 mm長及15 mm寬之樣品,且然後進行另一個滯後循環。此新循環具有兩個循環,其中各循環拉伸至目標100%伸長率。永久變形等於拉伸後未恢復到原始長度之材料的百分比,並且使用在第二循環開始時在F = 0.1N處的樣本長度來測定。計算考慮了在F = 0.1N、lf及樣本之初始長度li拉伸後樣本之長度,並且如下:
(lf-li)/li*100 =永久設定
從最少5個結果計算彈性恢復之平均值,並且接受的最大誤差為10%。量測在縱向(MD)與橫向(CD)上進行。
根據ASTM E398-2780,用Lyssy 80-50000滲透性儀錶進行膜的水蒸汽傳輸速率(WVTR)。在38℃與相對濕度不同之90%下量測膜。計算相同樣品之5次量測的平均值,其中最大可接受誤差為5%。然後將值縮放至25微米(1 mil)並報告為g-mil/m2
-天。
對於比較實例1(CE1),不可能產生膜。膜在擠出期間表現出強烈的孔形成。比較實例2(CE2)比CE1表現更好,但觀察到顯著的模具生產線及一些孔。不可能產生可用於特性測試之均勻樣品。比較實例3(CE3)比CE1與CE2表現更好,但仍觀察到顯著的模具生產線,以及碳酸鈣附聚物及50至150微米的不均勻厚度分佈。不可能從CE3產生厚度約為50微米之均勻膜樣品。
相反,當運行實例1與2之組合物(E1與E2)時,可以獲得明顯更好之可加工性並產生厚度分佈為48至55微米之膜樣品。E1與E2之量測特性表明此等膜具有良好的透氣性與彈性效能。如圖1所示,由E1組合物製備之膜達到約2700 g-mil/m2
-天之WVTR,並且由E2組合物製備之膜達到約3500 g-mil/m2
-天之WVTR。圖2顯示了E1與E2在縱向(MD)及橫向(CD)上之彈性效能。
圖1與2進一步顯示了E2、E3、E4與CE4之WVTR與彈性特性。從此等圖中可以看出,來自CE4之膜不透氣,如低WVTR所證明的。此等結果證明了各種組分之量的重要性,並且含有大於35重量%之碳酸鈣與大於8重量%之聚氧化乙烯之配製物可以實現所需特性。
此揭示進一步涵蓋以下態樣。
態樣1:一種透氣彈性膜,其包括:30至45重量%之聚烯烴彈性體,其具有0.860至0.890公克/立方公分之密度;10至15重量%之聚氧化乙烯,其在25℃下在5重量%水溶液中具有30至115厘泊之布洛克菲爾德黏度;及40至60重量%之親水性填充劑;其中重量%以膜中存在之材料的總重量%計;且其中如根據ASTM E398-2780所測定膜具有至少1,000 g-mil/m2-天之水蒸氣穿透率。
態樣2:如態樣1之膜,其中聚烯烴彈性體選自由以下組成之群組:基於丙烯之彈性體及基於乙烯之彈性體。
態樣3:如態樣1或2之膜,其中聚烯烴彈性體為乙烯/α-烯烴嵌段共聚物。
態樣4:如態樣3之膜,其中如根據ASTM D1238在190℃下使用2.16公斤負荷所測定,乙烯/α-烯烴嵌段共聚物具有0.5至10.0公克溶離/10分鐘之熔融指數。
態樣5:如態樣1或2之膜,其中聚烯烴彈性體為丙烯/α-烯烴共聚物。
態樣6:如態樣5之膜,其中如根據ASTM D1238在230℃下使用2.16公斤負荷所測定,丙烯/α-烯烴共聚物具有1.0至15.0公克溶離/10分鐘之熔體流動速率。
態樣7:如態樣1至6中任一項或多項之膜,其中聚氧化乙烯在25℃下在5重量%水溶液中具有40至115厘泊之布洛克菲爾德黏度。
態樣8:如態樣1至7中任一項或多項之膜,其中親水性填充劑包括碳酸鈣、雲母、高嶺土、珍珠岩、矽藻土、白雲石、碳酸鎂、硫酸鈣、硫酸鋇、玻璃與陶瓷珠、天然與合成二氧化矽、三氫氧化鋁、三氫氧化鎂、矽灰石、晶鬚、木粉、木質素、澱粉或其組合。
態樣9:如態樣1至8中任一項或多項之膜,其中親水性填充劑包括未塗覆之碳酸鈣。
態樣10:如態樣1至9中任一項或多項之膜,進一步包括選自由以下組成之群組:助滑劑、抗黏連劑、抗氧化劑、顏料、加工助劑、抗靜電劑、光學增強劑、亞磷酸酯、黏附添加劑、顏料、著色劑、阻燃劑、殺生物劑及抗微生物劑。
態樣11:如態樣1至10中任一項或多項之膜,其中如根據ASTM D5459-95及在200%伸長率下之預拉伸循環後所測定,膜表現出在縱向上小於15%且在橫向上小於30%之永久變形,並且其中如根據ASTM E398-2780所測定,膜表現出至少1,000 g-mil/m2
-天之水蒸氣穿透率。
態樣12:如態樣1至7中任一項或多項之膜,其包括32至43重量%之聚烯烴彈性體;10至12重量%之聚氧化乙烯;及45至54重量%之親水性填充劑,其包括未塗覆之碳酸鈣。
態樣13:一種複合層壓材料,其包括如態樣1至12中任一項或多項之膜。
態樣14:一種衛生製品,其包括如態樣1項至12中任一項或多項之膜。
替代地,組合物、方法及製品可包括以下、由以下構成或基本上由以下構成:本文中所揭示之任何合適之材料、步驟或組分。組合物、方法及製品可以另外地或替代地配製成使得不含或實質上不含任何材料(或物質)、步驟或組分,否則對於實現組合物、方法及製品的功能或目標不為必需的。
本文揭示之所有範圍包含端點,並且端點可彼此獨立地組合。「組合」包含共混物、混合物、合金、反應產物及其類似物。術語「第一」、「第二」及其類似物不表示任何順序、數量或重要性,而實際上用於將一個元素與另一個元素區分開。術語「一個/種(a/an)」及「所述(the)」不表示數量之限制,並且應被解釋為涵蓋單數與複數,除非本文另有說明或明確地與上下文相矛盾。除非另有明確說明,否則「或」表示「及/或」。整個說明書中對「一些實施例」,「實施例」等之引用意味著結合實施例描述之特定元素包含在本文描述之至少一個實施例中,並且可以存在或不存在於其它實施例中。此外,應理解,在各種實施例中,所描述之元素可以任何適合的方式組合。
除非本文相反地說明,否則所有測試標準均為截至本申請提交日期的最新標準,或若要求優先權,則為出現測試標準的最早優先權申請的提交日期。
除非另外規定,否則本文所使用之技術及科學術語具有與本申請所屬領域之熟習此項技術者通常所理解相同之含義。所引用之所有專利、專利申請案以及其它參考文獻均以全文引用之方式併入本文中。然而,若本申請案中之術語與併入之參考文獻中的術語相矛盾或衝突,則來自本申請案的術語優先於來自併入的參考文獻的衝突術語。
使用標準命名法描述化合物。例如,任何未經任何所指示之基團取代的位置應理解為其價數由如所指示的一個鍵或氫原子填充。不在兩個字母或符號之間的虛線(「-」)用於指示取代基之連接點。例如,-CHO經由羰基之碳連接。
雖然已經描述了特定實施例,但當前未預見到或可能當前未預見到之替代方案、變體、變化、改進與實質上等效物對於申請人或本領域熟習此項技術者可能出現。因此,所提交且可以修改之所附申請專利範圍旨在涵蓋所有此類替代方案、變體、變化、改進與實質上等效物。
無
以下附圖為例示性實施例。
圖1顯示本文所述膜之水蒸氣穿透率。
圖2顯示本文所述膜在縱向(MD)與橫向(CD)上之彈性特性。
Claims (14)
- 一種透氣彈性膜,其包括:30至45重量%之聚烯烴彈性體,其具有0.860至0.890公克/立方公分之密度;10至15重量%之聚氧化乙烯,其在25℃下在5重量%水溶液中具有30至115厘泊之布洛克菲爾德黏度(Brookfield viscosity);及40至60重量%之親水性填充劑;其中重量%以所述膜中存在之材料的總重量%計;且其中如根據ASTM E398-2780所測定,所述膜具有至少1,000g-mil/m2-天之水蒸氣穿透率。
- 如申請專利範圍第1項所述之膜,其中所述聚烯烴彈性體為基於丙烯之彈性體、基於乙烯之彈性體或其組合。
- 如申請專利範圍第1項所述之膜,其中所述聚烯烴彈性體為乙烯/α-烯烴嵌段共聚物。
- 如申請專利範圍第3項所述之膜,其中如根據ASTM D1238在190℃下使用2.16公斤負荷所測定,所述乙烯/α-烯烴嵌段共聚物具有0.1至50.0公克溶離/10分鐘之熔融指數。
- 如申請專利範圍第1項所述之膜,其中所述聚烯烴彈性體為丙烯/α-烯烴共聚物。
- 如申請專利範圍第5項所述之膜,其中如根據ASTM D1238在230℃下使用2.16公斤負荷所測定,所述丙烯/α-烯烴共聚物具有1.0至15.0公克溶離/10分鐘之熔體流動速率。
- 如申請專利範圍第1項所述之膜,其中所述聚氧化乙烯在25℃ 下在5重量%水溶液中具有40至115厘泊之布洛克菲爾德黏度。
- 如申請專利範圍第1項所述之膜,其中所述親水性填充劑包括三氫氧化鋁、硫酸鋇、碳酸鈣、硫酸鈣、碳酸鎂、三氫氧化鎂、矽藻土、白雲石、玻璃珠、陶瓷珠、高嶺土、雲母、珍珠岩、天然與合成二氧化矽、矽灰石、晶鬚、木粉、木質素、澱粉或其組合。
- 如申請專利範圍第1項所述之膜,其中所述親水性填充劑包括未塗覆之碳酸鈣。
- 如申請專利範圍第1項所述之膜,進一步包括添加劑,其中所述添加劑為抗氧化劑、助滑劑、抗黏連劑、抗氧化劑、顏料、加工助劑、抗靜電劑、光學增強劑、亞磷酸酯、亞膦酸二酯、黏附添加劑、顏料、著色劑、填充劑、TiO2、阻燃劑、殺生物劑、抗微生物劑或其組合。
- 如申請專利範圍第1項所述之膜,其中如根據ASTM D5459-95及在200%伸長率下之預拉伸循環後所測定,所述膜表現出在縱向上小於15%且在橫向上小於30%之永久變形,並且如根據ASTM E398-2780所測定所述膜表現出至少1,000g-mil/m2-天之水蒸氣穿透率。
- 如申請專利範圍第1項所述之膜,其包括32至43重量%之所述聚烯烴彈性體;10至12重量%之所述聚氧化乙烯;及45至54重量%之所述親水性填充劑,其包括未塗覆之碳酸鈣。
- 一種複合層壓材料,其包括如申請專利範圍第1項至第12項中任一項所述之膜。
- 一種衛生製品,其包括如申請專利範圍第1項至第12項中任一項所述之膜。
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AR (1) | AR115784A1 (zh) |
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TW201518098A (zh) * | 2013-10-25 | 2015-05-16 | Dow Global Technologies Llc | 具有經改良之水蒸氣穿透率的以聚烯烴爲主之薄膜 |
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US6117947A (en) * | 1997-12-31 | 2000-09-12 | Kimberly-Clark Worldwide, Inc. | Method of modifying poly(ethylene oxide) |
US7220478B2 (en) * | 2003-08-22 | 2007-05-22 | Kimberly-Clark Worldwide, Inc. | Microporous breathable elastic films, methods of making same, and limited use or disposable product applications |
US20050059941A1 (en) * | 2003-09-11 | 2005-03-17 | Kimberly-Clark Worldwide, Inc. | Absorbent product with improved liner treatment |
JP5133050B2 (ja) | 2004-03-17 | 2013-01-30 | ダウ グローバル テクノロジーズ エルエルシー | エチレンマルチブロックコポリマーを形成するためのシャトリング剤を含む触媒組成物 |
US7608668B2 (en) | 2004-03-17 | 2009-10-27 | Dow Global Technologies Inc. | Ethylene/α-olefins block interpolymers |
WO2007081548A2 (en) | 2006-01-06 | 2007-07-19 | Pliant Corporation | Method of stretching a filled film to make it microporous and breathable |
WO2009097560A1 (en) | 2008-01-30 | 2009-08-06 | Dow Global Technologies Inc. | ETHYLENE/α-OLEFIN BLOCK INTERPOLYMERS |
US20130295364A1 (en) * | 2012-05-01 | 2013-11-07 | Dow Global Technologies Llc | Polyolefin based films with improved water vapor transmission rates |
CA2891444C (en) * | 2012-11-21 | 2020-11-24 | Dow Global Technologies Llc | A film composition, film made from the film composition and a multi-layer film including the film and articles made therefrom |
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- 2019-07-12 AR ARP190101995A patent/AR115784A1/es active IP Right Grant
- 2019-07-19 EP EP19746422.5A patent/EP3824020A1/en not_active Withdrawn
- 2019-07-19 MX MX2020013821A patent/MX2020013821A/es unknown
- 2019-07-19 US US17/258,272 patent/US20210269626A1/en not_active Abandoned
- 2019-07-19 CN CN201980040687.2A patent/CN112334523B/zh active Active
- 2019-07-19 BR BR112020025658-7A patent/BR112020025658A2/pt not_active Application Discontinuation
- 2019-07-19 WO PCT/US2019/042517 patent/WO2020018865A1/en active Application Filing
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CN1290280A (zh) * | 1997-09-15 | 2001-04-04 | 金伯利-克拉克环球有限公司 | 稳定的透气的弹性制品 |
US6348258B1 (en) * | 1998-06-25 | 2002-02-19 | Kimberly-Clark Worldwide, Inc. | Breathable film having organic filler |
TW201518098A (zh) * | 2013-10-25 | 2015-05-16 | Dow Global Technologies Llc | 具有經改良之水蒸氣穿透率的以聚烯烴爲主之薄膜 |
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US20210269626A1 (en) | 2021-09-02 |
KR20210034600A (ko) | 2021-03-30 |
BR112020025658A2 (pt) | 2021-03-23 |
EP3824020A1 (en) | 2021-05-26 |
CN112334523B (zh) | 2023-08-01 |
TW202007724A (zh) | 2020-02-16 |
WO2020018865A1 (en) | 2020-01-23 |
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