TW201816057A - 胺甲酸乙酯接著劑 - Google Patents
胺甲酸乙酯接著劑 Download PDFInfo
- Publication number
- TW201816057A TW201816057A TW106117515A TW106117515A TW201816057A TW 201816057 A TW201816057 A TW 201816057A TW 106117515 A TW106117515 A TW 106117515A TW 106117515 A TW106117515 A TW 106117515A TW 201816057 A TW201816057 A TW 201816057A
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- Prior art keywords
- adhesive
- urethane
- polyol
- acid
- plasticizer
- Prior art date
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- 239000000853 adhesive Substances 0.000 title claims abstract description 124
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- -1 urethane polyol Chemical class 0.000 claims abstract description 72
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- 239000012948 isocyanate Substances 0.000 claims abstract description 44
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Classifications
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Abstract
本發明揭露一種胺甲酸乙酯接著劑,其包含一胺甲酸乙酯多元醇、一聚異氰酸酯、一塑化劑與一安定劑,其中該胺甲酸乙酯多元醇係一聚乙二醇和一聚丙二醇與一異氰酸酯單體之聚合物,而且該塑化劑包含一蓖麻(castor)油類化合物。關於該接著劑,一形成於一基材(例如,塑膠)上之接著劑層,其對一黏附體(較佳為玻璃)具有優良之表面可濕性,並且即使長時間暴露於高溫及/或高濕之條件下,其仍維持充足之脫模性,而且各組分亦具有優良之相容性。亦提供一種塗有該胺甲酸乙酯接著劑之接著劑膜。
Description
依據巴黎公約,本案主張在2016年6月14日所提出日本專利申請案第2016-117638號之利益,此處將其全部內容透過引用併入本文。
本發明係有關於一種胺甲酸乙酯接著劑(或胺甲酸乙酯感壓接著劑)應用於各種接著劑產品,例如各種黏膠帶、各種黏膠膜(或各種自黏膜)與黏膠標籤(或自黏標籤),以及特別是各種保護膜,其包覆各種窗玻璃與各種行動電話、智慧型手機、平板電腦、電視等之顯示器。
已經有許多被製造出來之接著劑產品(包含基材與接著劑層),例如各種黏膠帶、各種黏膠封膠、黏膠膜、標籤、裝潢板材與防滑板材,利用將接著劑(或感壓接著劑)塗佈到基材,如紙與塑膠之各種薄膜或板材,以形成一接著劑層。近來,許多接著劑亦被用於行動電話、智慧型手機、平板電腦、個人電腦(PC)、電視(TV)等之液晶顯示器之各種表面保護膜。該些表面保護膜被貼附於各種黏附體,例如液晶顯示器之玻璃或液晶顯示器之偏光片,之後,當該些表面保護膜已經完成保護該些表面之作用時,該些表面保護膜可從該些黏附體剝除。因此,關於由該些接著劑所形成之接著劑層,即使該些保護膜貼附在該些黏附體很久一段時間,人們仍能用手將該些保護膜剝除,亦即該些接著劑應該具有優良之脫膜性 (releasability)。
到目前為止,許多接著劑如丙烯酸類接著劑與橡膠類接著劑,作為接著劑已廣為人知。不過,該丙烯酸樹脂類接著劑可能會造成黏附性劇烈增加,並且在剝除時,因為接著劑層在被貼附至該黏附體後,本身隨著時間經過而缺乏膠合力(cohesive force),可能會產生接著劑積汙(adhesive deposit)(即膠合失效)在黏附體上。
另一方面,該橡膠類接著劑通常包含大量之添加劑,例如膠黏劑(tackifier)樹脂與塑化劑(plasticizer)。因此,在被貼附至黏附體之後,隨著時間經過,這些添加劑可能會滲出(bleed)分離,結果,在剝除時,該些接著劑之黏附性可能會降低,而且接著劑積汙(deposit)會殘留在該黏附體上。
一種胺甲酸乙酯接著劑有時被用來作為一種解決這些問題之手段(見專利文件1與專利文件2)。
專利文件1揭露一種感壓接著劑,其係藉由製備許多不飽和單體與胺甲酸乙酯樹脂之共聚合物之一種複合樹脂,並且將該複合樹脂與多官能基聚異氰酸酯化合物混合來獲得(見[請求項1],專利文件1之說明書第[0041]至[0054]與[0066]至[0067]段)。
專利文件2揭露一種胺甲酸乙酯感壓接著劑,其係藉由混合聚胺甲酸乙酯多元醇、多官能基異氰酸酯化合物與脂肪酸酯來獲得(見[請求項1],專利文件2之說明書第[0046]至[0047]段)。
當與該丙烯酸類接著劑與該橡膠類接著劑相比較時,專利文件1與2之胺甲酸乙酯感壓接著劑能抑制滲出之分離,以及接著劑積汙之 產生,並且在一段長期間之後(或經過一段長時間),也能將與脫膜性有關之性質維持在一定程度。
然而,當在高溫與/或高濕之條件下,經過一段時間,兩專利文件之胺甲酸乙酯感壓接著劑都沒有足夠之脫膜性。
此外,當胺甲酸乙酯接著劑(或感壓接著劑)被用於窗玻璃之保護膜時,該胺甲酸乙酯接著劑應該包含大量之添加劑,因為該胺甲酸乙酯接著劑容易因紫外光而變黃。結果,該些大量之添加劑可能會造成該接著劑之相容性(compatibility)之劣化(degradation),並且可能產生滲出。
再者,許多胺甲酸乙酯接著劑,對玻璃具有不佳之可濕性(wettability),而且以一薄膜將該玻璃之表面全部覆蓋,需要花費一段很長時間,使得空氣會進到該玻璃與該薄膜間之界面,這會造成該薄膜從該玻璃浮動。
引用文獻列表
專利文獻
[專利文獻1]JP 2000-328035 A
[專利文獻2]JP 2011-190420 A
本發明之目的係提供一種接著劑,其中一形成於一基材(例如,塑膠)上之接著劑層,其對一黏附體(較佳為玻璃)具有優良之表面可濕性,並且即使長時間暴露於高溫與/或高濕之條件下,其仍維持充足之脫 模性,而且各組分亦具有優良之相容性。
為了解決上述問題,本案發明人經過深入研究、發現,當多元醇與塑化劑作為胺甲酸乙酯接著劑之原物料,且被限制於一些特定多元醇與塑化劑時,可獲得一種胺甲酸乙酯接著劑,其對玻璃具有優良之可溼性,而且對各組分具有優良之相容性,不會造成保護膜與玻璃間之脫膜性劣化,因而完成本發明。
一方面,本發明提供一種新穎胺甲酸乙酯接著劑,其包含一胺甲酸乙酯多元醇、一聚異氰酸酯、一塑化劑與一安定劑,其中該胺甲酸乙酯多元醇係一聚乙二醇和一聚丙二醇與一異氰酸酯單體之聚合物,而且該塑化劑包含一蓖麻(castor)油類化合物。
在一實施例中,本發明提供一種胺甲酸乙酯接著劑,其包含以該聚乙二醇、該聚丙二醇、該異氰酸酯單體、該塑化劑與該安定劑之總重為100重量份為基準,數量為3至30重量份之該塑化劑。
在另一實施例中,本發明提供一種胺甲酸乙酯接著劑,其中該蓖麻油類化合物,在25℃具有從5至400mPa.s之黏度。
在另外之實施例中,本發明提供一種胺甲酸乙酯接著劑,包括一胺甲酸乙酯預聚合物,其係胺甲酸乙酯多元醇與聚異氰酸酯之聚合物;一塑化劑與一安定劑。
另一方面,本發明提供一種接著劑膜,塗有胺甲酸乙酯接著劑。
另一方面,本發明提供一種構件(member),以一接著劑膜 保護。
在一較佳方面,本發明提供一種用來製造胺甲酸乙酯接著劑之新穎製程,其包括下列步驟:混合一聚乙二醇和一聚丙二醇與一異氰酸酯單體以製備一胺甲酸乙酯多元醇;以及進一步將一聚異氰酸酯與該胺甲酸乙酯多元醇混合,以製備一胺甲酸乙酯預聚合物,其中該胺甲酸乙酯預聚合物包含一塑化劑與一安定劑,並且該塑化劑包含一蓖麻油類化合物。
本發明之胺甲酸乙酯接著劑係一種胺甲酸乙酯接著劑,其包含一胺甲酸乙酯多元醇、一聚異氰酸酯、一塑化劑與一安定劑,其中該胺甲酸乙酯多元醇係一聚乙二醇(polyethylene glycol)、聚丙二醇(polypropylene glycol)與異氰酸酯單體之聚合物,而且該塑化劑包含一蓖麻(castor)油類化合物。
因此,可在短時間內,均勻地將一薄膜與一玻璃積層在一起,而且該接著劑之脫膜性,即使在嚴苛條件下,如高溫與高濕下,也不會劣化,故在一定期間之後(或經過一定時間之後),可輕易地將該薄膜從該玻璃剝除。
本發明之胺甲酸乙酯接著劑不會產生滲出,因為與各種添加劑,例如塑化劑與安定劑,有優良之相容性,而且因為與該玻璃有優良之可溼性,也不會使該薄膜從該玻璃浮動。
本發明之胺甲酸乙酯接著劑對玻璃、各種液晶顯示器之偏光片等,具有優良之脫模性,而且因此對窗玻璃、行動電話等之表面保護 膜而言,很有用。
[實施例之敘述]
以本發明為基礎之胺甲酸乙酯接著劑(或胺甲酸乙酯感壓接著劑)包含(A)一胺甲酸乙酯多元醇、(B)一聚異氰酸酯、(c)一塑化劑與(d)一安定劑。
本發明亦包括一組組分(A)、(B)、(c)與(d),以獲得以本發明為基礎之胺甲酸乙酯接著劑。
該些組分(A)、(B)、(c)與(d)可為在四種組分各自分開之狀態,以及該胺甲酸乙酯接著劑可為一所謂雙組分(或兩部份)接著劑,其包括含組分(A)、(c)與(d)之第一組分與包含該組分(B)之第二組分。
本發明亦提供一種接著劑,包括一胺甲酸乙酯預聚合物,其由該組分(A)與該組分(B)反應而得。
<(A)胺甲酸乙酯多元醇>
以本發明為基礎之該胺甲酸乙酯多元醇(A)係指一化合物,其在主鏈中(在化合物內,排除末端)具有胺甲酸乙酯鍵,而且在末端具有一羥基。
該胺甲酸乙酯多元醇(A)可由(a)一多元醇與(b)一異氰酸酯單體反應而得。
在本發明中,該多元醇(a)包含一聚醚多元醇。
各種習知之聚醚多元醇能被用來當作該聚醚多元醇。該些 聚醚多元醇能藉由使用低分子量多元醇,例如水、丙二醇(propylene glycol)、乙二醇(ethylene glycol)、甘油(glycerin)或三羥甲基丙烷(trimethylolpropane)作為起始劑,使環醚(cyclic ether)化合物,例如環氧乙烷(ethylene oxide),環氧丙烷(propylene oxide)、環氧丁烷(butylene oxide)或四氫呋喃(tetrahydrofuran)聚合來獲得。
具體地,使用一些具有二或更多官能基之聚醚多元醇,例如聚丙二醇(PPG),聚乙二醇(PEG)和聚四亞甲基二醇(polytetramethylene glycols,PTMG)。
在本發明中,該多元醇(a)包括聚乙二醇與聚丙二醇兩者。在本發明之胺甲酸乙酯接著劑中,當該多元醇(a)包括聚乙二醇與聚丙二醇兩者時,對玻璃之可溼性會受到改善,同時維持脫模性。因此,一塑膠膜透過本發明之胺甲酸乙酯接著劑(接著劑層)與一玻璃板接觸,而可將兩者在短時間內積層在一起。由於接著劑層對玻璃板之可溼性受到改善,所以不會在界面處產生任何孔洞,而且可以在一定期間之後,從該玻璃板將該接著劑層輕易移除。
該些聚醚多元醇較佳地具有一數目平均分子量從500至5000,而且特別較佳地具有一數目平均分子量從800至4000。當該些聚醚多元醇具有一數目平均分子量在上述範圍內時,本發明之胺甲酸乙酯接著劑係在相容性方面比較優良,而且其將比較難以產生滲出。
在本說明書中,該數目平均分子量(Mn)意指一數值,其係由凝膠滲透層析術(gel permeation chromatography,GPC)量測,並且以聚苯乙烯標準物校正。具體地,Mn可以下列GPC裝置與量測方法獲得,使 用由東曹(TOSOH)公司所製造之HCL-8220GPC來當作GPC裝置,並且使用RI來當作偵測器,使用兩支由東曹公司所製造之TSK凝膠超多孔HZ-M(TSKgel SuperMultipore HZ-M)來當作GPC管柱(column)。將樣品溶於四氫呋喃(tetrahydrofuran)中,並且讓該溶液以0.35毫升/分(ml/min)之流速流動,以及管柱溫度在40℃,以得到分子量之量測數值。藉由校正曲線,其使用具有單一分佈分子量之聚苯乙烯當作標準物質,校正所量測到之分子量,而獲得目標之Mn。
該聚醚多元醇較佳地具有從30至200mgKOH/g之羥值(hydroxyl value),特別較佳地具有50至150mgKOH/g之羥值。當該聚醚多元醇具有在上述範圍內之羥值時,本發明之胺甲酸乙酯接著劑會在黏合力(cohesive force)與黏附性(adhesiveness)間有優異之平衡,因此,使得在嚴苛條件下,例如在高溫高濕下,可維持脫模性。
此處所使用之羥值意指當1g樹脂被醯化時,用來中和醋酸,與該些羥基結合所需要氫氧化鉀之毫克數。
在本發明中,該羥值係具體地以下列方程式(i)來計算。
(i):羥值=(低分子量多元醇之重量/低分子量多元醇之分子量)x在1mol低分子量多元醇中所含羥基之莫耳數x KOH之式量x 1000/聚醚多元醇之重量。
在本發明中,該多元醇(a)可進一步包括一聚酯多元醇。當該多元醇包括該聚酯多元醇時,本發明之胺甲酸乙酯接著劑有更優良之黏合力。
在本發明中,該「聚酯多元醇」意指一種化合物,屬於各 種「主鏈型」聚酯,並且在該「主鏈」中具有許多酯鍵與羥基。該聚酯多元醇通常係經由低分子量二醇(diol)和二羧酸(dicarboxylic acid)與/或其酸酐(anhydride)之縮合聚合反應來獲得。
該二羧酸之實例包含草酸(oxalic acid)、丙二酸(malonic acid)、丁二酸(succinic acid)、戊二酸(glutaric acid)、己二酸(adipic acid)、庚二酸(pimelic acid)、辛二酸(suberic acid)、壬二酸(azelaic acid)、泌脂酸(sebacic acid)、癸二酸(decanedioic acid)、2-甲基丁二酸(2-methylsuccinic acid)、2-甲基己二酸(2-methyladipic acid)、3-甲基己二酸(3-methyladipic acid)、3-甲基戊二酸(3-methylpentanedioic acid)、2-甲基辛二酸(2-methyloctanedioic acid)、3,8-二甲基癸二酸(3,8-dimethyldecanedioic acid)、3,7-二甲基癸二酸(3,7-dimethyldecanedioic acid)、鄰苯二甲酸(phthalic acid)、對苯二甲酸(terephthalic acid)、間苯二甲酸(isophthalic acid)、萘二羧酸(naphthalenedicarboxylic acid)、偏苯三甲酸(trimellitic acid)、對稱苯三甲酸(trimesic acid)、環己烷二羧酸(cyclohexanedicarboxylic acid)等。該些二羧酸可單獨或組合使用。
該些羧酸酐之實例包含乙酸酐(acetic anhydride)、丙酸酐(propionic anhydride)、丁二酸酐(succinic anhydride)、馬來酸酐(maleic anhydride)和鄰苯二甲酸酐(phthalic anhydride)。該些羧酸酐可單獨或組合使用。
一些具有1至3官能基之二醇,較佳地係作為低分子量二醇。該「二醇」之實例包括乙二醇(ethylene glycol)、1-甲基乙二醇(1-methylethylene glycol)、1-乙基乙二醇(1-ethylethylene glycol)、丙二醇 (propylene glycol)、丁二醇(butanediol)、戊二醇(pentanediol)、己二醇(hexanediol)、庚二醇(heptanediol)、辛二醇(octanediol)、壬二醇(nonanediol)、癸二醇(decanediol)、新戊二醇(neopentyl glycol)、2-甲基-1,3-丙二醇(2-methyl-1,3-propanediol)、環己烷二甲醇(cyclohexanedimethanol)、2,4-二甲基-1,5-戊二醇(2,4-dimethyl-1,5-pentanediol)、2,4-二丁基-1,5-戊二醇(2,4-dibutyl-1,5-pentanediol)等。
該聚酯多元醇較佳地具有一數目平均分子量從500至3000g/mol,而且特別較佳地具有一數目平均分子量從1000至2500g/mol。當該聚酯多元醇具有一在上述範圍內之數目平均分子量時,本發明之胺甲酸乙酯接著劑可有更優良之相容性,而且難以產生滲出。該聚酯多元醇之數目平均分子量能夠由GPC來測定,其方法類似使用於測定該聚醚多元醇之數目平均分子量之方式。
該聚酯多元醇較佳地具有從30至200mgKOH/g之羥值(hydroxyl value),特別較佳地具有50至150mgKOH/g之羥值。當該聚酯多元醇具有在上述範圍內之羥值時,本發明之胺甲酸乙酯接著劑會在黏合力(cohesive force)與黏附性(adhesiveness)間有優異之平衡,因此,使得在高溫及/或高濕之嚴苛條件下,可維持脫模性。
該聚酯多元醇之羥值係以下列方程式(ii)來計算。
(ii):羥值=(低分子量二醇之重量/低分子量二醇之分子量)x在1mol低分子量二醇中所含羥基之莫耳數x KOH之式量x 1000/聚酯多元醇之重量。
只要能夠獲得本發明之目標胺甲酸乙酯接著劑,該異氰酸 酯單體(b)沒有特別限制。該異氰酸酯單體較佳地包括至少一選自各種脂肪族異氰酸酯(aliphatic isocyanates)與各種脂環族異氰酸酯(alicyclic isocyanates)。當該異氰酸酯單體包括上述異氰酸酯時,本發明之胺甲酸乙酯接著劑之耐候性(weatherability)會受到改善。因此,減少安定劑(例如抗氧化劑與紫外線吸收劑)之數量,並且也改善相容性。
以本發明為基礎之該「異氰酸酯單體(b)」,非指其僅包括該脂肪族異氰酸酯與該脂環族異氰酸酯。只要不對本發明之胺甲酸乙酯接著劑之脫模性與相容性產生不利影響,該異氰酸酯單體(b)可包含芳香族異氰酸酯。從耐候性之觀點出發,該異氰酸酯單體(b)較佳地不包括任何乙烯雙鍵(例如:乙烯基、丁烯基等)。
此處所使用之「脂肪族異氰酸酯」意指一化合物,其具有一鏈狀碳氫鏈,其中許多異氰酸酯基係直接與該碳氫鏈結合,而且也沒有任何環狀碳氫鏈。雖然該「脂肪族異氰酸酯」可包括芳香族環,但是該芳香族環並沒有直接與該些異氰酸酯基結合。
在本說明書中,該芳香族環不包括在該環狀碳氫鏈中。
該「脂環族異氰酸酯」係一種化合物,其具有環狀碳氫鏈,而且可具有一鏈狀碳氫鏈。該異氰酸酯基可直接與該環狀碳氫鏈結合,或可直接與可能存在之該鏈狀碳氫鏈結合。雖然該「脂環族異氰酸酯」可包括一芳香族環,但是該芳香族環並沒有直接與該些異氰酸酯基結合。
該「芳香族異氰酸酯」意指一種化合物,其具有一芳香族環,其中許多異氰酸酯基係直接與該芳香族環結合。因此,一種化合物,即使其在分子中包括一芳香族環,其中異氰酸酯基沒有直接與該芳香族環 結合,亦被歸類為脂肪族異氰酸酯或脂環族異氰酸酯。
因此,例如,4,4’-二苯甲烷二異氰酸酯(OCN-C6H4-CH2-C6H4-NCO)相當於該芳香族異氰酸酯,因為該些異氰酸酯基係直接與該芳香族環結合。另一方面,舉例來說,苯二甲基二異氰酸酯(OCN-CH2-C6H4-CH2-NCO)即使包含一芳香族環,其相當於該脂肪族異氰酸酯,因為該些異氰酸酯基與亞甲基結合,沒有直接與該芳香族環結合。
該芳香族環可為一種環,其中有二或更多併合之苯環。
該脂肪族異氰酸酯之實例包括1,4-二異氰酸根丁烷(1,4-diisocyanatobutane)、1,5-二異氰酸根戊烷(1,5-diisocyanatopentane)、1,6-二異氰酸根己烷(1,6-diisocyanatohexane)(以下稱為HDI)、1,6-二異氰酸根-2,2,4-三甲基己烷(1,6-diisocyanato-2,2,4-trimethylhexane)、2,6-二異氰酸根己酸甲酯(賴氨酸二異氰酸酯)(2,6-diisocyanatohexanoic acid methyl ester(lysine diisocyanate))、1,3-雙(異氰酸基甲基)苯(苯二甲基二異氰酸酯)(1,3-bis(isocyanatomethyl)benzene(xylylene diisocyanate))等。
該脂環族異氰酸酯之實例包括5-異氰酸根-1-異氰酸根甲基-1,3,3-三甲基環己烷(異佛爾酮二異氰酸酯(IPDI))(5-isocyanato-1-isocyanatomethyl-1,3,3-trimethylcyclohexane(isophorone diisocyanate))、1,3-雙(異氰酸根甲基)環己烷(氫化苯二甲基二異氰酸酯)(1,3-bis(isocyanatomethyl)cyclohexane(hydrogenated xylylene diisocyanate))、雙(4-異氰酸根環己基)甲烷(氫化二苯基甲烷二異氰酸酯)(bis(4-isocyanatocyclohexyl)methane(hydrogenated diphenylmethane diisocyanate))、1,4-二異氰酸根環己烷(1,4-diisocyanatocyclohexane)等。
在本發明中,只要可以獲得本發明之目標胺甲酸乙酯接著劑,該異氰酸酯單體(b)可包括一芳香族異氰酸酯。該芳香族異氰酸酯之實例包括4,4'-二苯甲烷二異氰酸酯(4,4’-diphenylmethane diisocyanate)、對伸苯基二異氰酸酯(p-phenylene diisocyanate)、間伸苯基二異氰酸酯(m-phenylene diisocyanate)等。
這些異氰酸酯單體(b)可單獨或組合使用,特別地,HDI較佳。
只要可以獲得以本發明為基礎之胺甲酸乙酯多元醇(A),該多元醇(a)與該異氰酸酯單體(b)之反應方法沒有特別限制,而且可以使用一般胺甲酸乙酯化(urethanation)反應方法。例如,可以利用不使用溶劑之區段聚合反應(bulk polymerization),以及使用溶劑之溶液聚合反應(solution polymerization),而且經過適當加熱與攪拌之後,可以選擇性地使用催化劑。在該多元醇(a)與該異氰酸酯單體(b)反應時,也可以使用各種添加劑,例如安定劑(d)。
該胺甲酸乙酯多元醇(A)包含一重複單元,其衍生自聚丙二醇與聚乙二醇兩者,更具體地,至少一選自各種氧化乙烯基(-O-CH2CH2-)與各種氧化丙烯基(-O-CH2CH2CH2-、-O-CH(CH3)-CH2-與-O-CH2-CH(CH3)-),而且包含許多胺甲酸乙酯鍵(-NH-COO-)。
此外,該胺甲酸乙酯多元醇(A)較佳地具有一數目平均分子量從10000至30000,而且特別較佳地從12000至25000。
此外,該胺甲酸乙酯多元醇(A)較佳地具有一羥值從3至10mgKOH/g,更佳從5至8mgKOH/g,以及特別較佳從4至8mgKOH/g。
<(B)聚異氰酸酯>
該聚異氰酸酯(B)係上述異氰酸酯單體(b)之聚合物(聚合異氰酸酯(polymeric isocyanate)或異氰酸酯二聚體(isocyanate dimer)和三聚體(trimer)等)。該聚異氰酸酯之實例包括異佛爾酮二異氰酸酯、二苯甲烷二異氰酸酯(diphenylmethane diisocyanate)和六亞甲基二異氰酸酯(hexamethylene diisocyanate)之聚合物(二聚體、三聚體、......),而且該聚異氰酸酯特別較佳為六亞甲基二異氰酸酯之聚合物。
該聚異氰酸酯較佳為異氰尿酸酯(isocyanurate)、縮二脲(biuret)或加合物(adduct),特別較佳為異氰尿酸酯,以及最佳為六亞甲基二異氰酸酯之異氰尿酸酯。
該聚異氰酸酯(B)係與該胺甲酸乙酯多元醇(A)混合,以獲得一胺甲酸乙酯預聚合物,其係該組分(A)與該組分(B)之反應產物。當該組分(B)係一異氰尿酸酯時,本發明之胺甲酸乙酯接著劑可在短時間內,均勻地將一薄膜基材與一黏附體積層在一起,並且具有更優良之脫模性。
<(c)塑化劑>
此處所使用之塑化劑意指一種材料,其被添加於一聚合物組成物中,而且提供該聚合物組成物伸縮性。在本發明中,該塑化劑包括一蓖麻油類化合物。
該蓖麻油類化合物之實例包括各種蓖麻油與各種蓖麻油衍生物。當該塑化劑包括一蓖麻油與/或一蓖麻油類衍生物時,本發明之胺甲酸乙酯接著劑可具有優良之相容性,並且即使在嚴苛條件下,如在高溫與高濕下,具有優良之脫模性。
該蓖麻油係一種蔬菜油,由大戟科(Euphorbiaceae)之蓖麻油植物種子獲得,並且包含各種不飽和脂肪酸(蓖蔴油酸(ricinoleic acid):87%、油酸(oleic acid):7%、亞麻油酸(linoleic acid):3%)甘油酯,以及少量飽和脂肪酸(棕櫚酸(palmitic acid)、硬脂酸(stearic acid)等:3%),商業上可取得之產品,可用來當作該些蓖麻油類化合物,該些商業上可取得之蓖麻油產品包含由伊藤製油(Itoh Oil Chemicals)股份有限公司所製造之LAV(商品名)。
在本發明中,該蓖麻油衍生物意指一種化合物,其係藉由引入官能基、氧化、還原、原子取代等,將一蓖麻油(其係一種蔬菜油)改質,同時,該蓖麻油之化學結構與性質沒有重大改變。
該蓖麻油衍生物之實例包括各種脫水蓖麻油、氫化蓖麻油、蓖麻油脂肪酸、脫水蓖麻油脂肪酸、12-羥基硬脂酸、蓖麻油脂肪酸酯等。
該些商業上可取得蓖麻油衍生物之產品之實例包括:由伊藤製油股份有限公司所製造之氫化蓖麻油A(商品名)、CO-FA(商品名)、DCO-FA(商品名)、Ric Cizer S4(商品名)、Ric Cizer C-101(商品名)與Ric Cizer GR-310(商品名);由青木油脂工業(Aoki Oil Industrial)有限公司所製造之Blaunon BR-410(商品名)、Blaunon BR-430(商品名)、Blaunon BR-450(商品名)、Blaunon CW-10(商品名)、Blaunon RCW-20(商品名)、Blaunon RCW-40(商品名)、Blaunon RCW-50(商品名)、Blaunon RCW-60(商品名)等;以及 由日油(NOF)公司所製造之Castor Wax A(商品名)、Newcizer 510R(商品名)、Stearic acid Sakura(商品名)、Hydrogenated Castor Oil Fatty Acid(商品名)、NAA-34(商品名)、NAA-160(商品名)、NAA-175(商品名)等。
該些蓖麻油類化合物能單獨或組合使用。
以本發明為基礎之該蓖麻油類化合物之酸價(acid value)較佳為3.0mgKOH/g或以下,並且特別較佳為2.0mgKOH/g或以下。當該酸價在上述範圍內時,本發明之胺甲酸乙酯接著劑可具有優良之相容性,故可減少滲出之產生。
假設在1g該蓖麻油類化合物中,所含之全部酸性基團為游離酸(free acids),該蓖麻油類化合物之「酸價」以需要用來中和該些酸之氫氧化鉀之毫克數之計算值來表示,因此,在實際系統中,即使酸性基團係以鹼存在,仍將其假設為游離酸。具體地,以本發明為基礎之該「酸價」,係由下列方程式(iii)來決定。
(iii):酸價(mgKOH/g)=(在蓖麻油類化合物中所含酸之重量/在蓖麻油類化合物中所含酸之分子量)x在蓖麻油類化合物中所含1mol酸中所含酸性基團之莫耳數x KOH之式量x 1000/蓖麻油類化合物之重量
在本發明中,該蓖麻油類化合物較佳具有一從1.450至1.470NP 25之折射率(refractive index)。該折射率通常意指一種數值,係由真空中之光速除以材料中之光速所獲得,而且具體地意指一數值,係依據JIS K0062-1992量測。(此外,該折射率可意指當光在一定材料中行進時,「阻 力(resistance)」之量。)
在本發明中,該蓖麻油類化合物較佳具有熔融黏度(melt viscosity)在25℃從5至400mPa.s,而且特別較佳在25℃從5至300mPa.s。
此處所使用在25℃,該熔融黏度意指一種數值,係使用布魯克菲爾德黏度計(Brookfield viscometer),以No.27轉針(rotor)、旋轉數(rotation number)100來測量。
當該蓖麻油類化合物之熔融黏度係在上述範圍內時,本發明之胺甲酸乙酯接著劑對許多添加劑等具有優良之相容性,對玻璃也有優良之可溼性,以及其將難以產生滲出,因此,使其可在短時間內,透過本發明之胺甲酸乙酯接著劑,使薄膜與該玻璃均勻地接觸。
<(d)安定劑>
此處所使用之該「安定劑」係被混合,以防止該胺甲酸乙酯接著劑,因加熱而減少分子量,發生膠化、染色(coloration)、氣味(odor)等,從而改善該胺甲酸乙酯接著劑之穩定性,而且只要可以獲得以本發明為基礎之該目標胺甲酸乙酯接著劑,沒有特別限制。該「安定劑」之實例包括各種抗氧化劑(antioxidants)與光安定劑(light stabilizing agents)。此處所使用之光安定劑被粗略分成紫外線吸收劑(ultraviolet absorbers)與受阻胺類安定劑(hindered amine-based stabilizing agents,HALS)。
該「抗氧化劑」被用來防止該胺甲酸乙酯接著劑氧化劣化。該「抗氧化劑」之實例包括各種酚類抗氧化劑、硫類抗氧化劑、磷類抗氧化劑等。
該「紫外線吸收劑」係一種化合物,藉由吸收紫外光,並 且將該紫外光之能量轉換成對塑膠無害之動能與/或熱能,來改善該胺甲酸乙酯接著劑之耐候性。該紫外線吸收劑之實例含有各種苯並三唑(benzotriazole)類紫外線吸收劑、二苯甲酮(benzophenone)類紫外線吸收劑等。
該「受阻胺類安定劑(HALS)」捕捉由紫外光所產生之自由基,並且發揮防止染色與維持光澤之作用。
只要可以獲得下述之目標接著劑薄膜,上述安定劑沒有特別限制,而且該安定劑可被添加至該胺甲酸乙酯接著劑。
可以使用商業上可以取得之產品來當作該安定劑。其實例包括由艾德卡公司(Adeka Corporation)所製造之Adekastab AO-50與Adekastab LA-36(商品名);由住友化學有限公司(Sumitomo Chemical Company Limited)所製造之SUMILIZER GM(商品名),SUMILIZER TPD(商品名)與SUMILIZER TPS(商品名);由巴斯夫(BASF)公司所製造之IRGANOX 1010(商品名)、IRGANOX 1330(商品名)、IRGAFOS 168(商品名)、IRGANOX 1520(商品名)、Tinuvine 479(商品名)與Tinuvne 123(商品名);以及由城北化學工業公司(Johoku Chemical Co.,Ltd)所製造之JP-650(商品名)與JF77(商品名)。這些安定劑可單獨或組合使用。
本發明之胺甲酸乙酯接著劑包括上述組分,例如(A)胺甲酸乙酯多元醇、(B)聚異氰酸酯、(c)塑化劑之蓖麻油類化合物與(d)安定劑。
本發明亦包括一組組分(A)、(B)、(c)與(d),以獲得以本發明為基礎之胺甲酸乙酯接著劑。
該些組分(A)、(B)、(c)與(d)可為在該四種組分各自分開之 狀態,或該胺甲酸乙酯接著劑可為所謂雙組分接著劑,其包括包含組分(A)、(c)與(d)之第一液體(或第一組分)與包含組分(B)之第二液體(或第二組分)。
本發明亦提供一種接著劑,包括胺甲酸乙酯預聚合物,其係由該組分(A)與該組分(B)反應而得。
該胺甲酸乙酯多元醇(A)係(a)多元醇(包括聚乙二醇與聚丙二醇)與(b)異氰酸酯單體之反應產物。
在本發明之胺甲酸乙酯接著劑中,以該組分(a)至(d)之總重之100重量份為基準,該塑化劑(d)之數量係較佳從3至30重量份,特別較佳從5至20重量份,以及最佳從7至15重量份。
因此,在本發明之胺甲酸乙酯接著劑中,以該組分(A)及(c)至(d)之總重之100重量份為基準,該塑化劑(d)之數量係較佳從3至30重量份,特別較佳從5至20重量份,以及最佳從7至15重量份。
當這些組分之數量係在上述範圍內時,本發明之胺甲酸乙酯接著劑,對玻璃表面顯現出更優良之可溼性,同時維持脫模性。當使用本發明之胺甲酸乙酯接著劑,將塑膠膜與玻璃積層在一起時,空氣不會進入界面,而且因此保護膜不會從該玻璃表面浮動。在一定期間之後,可將該薄膜從該玻璃表面剝除。
以本發明為基礎之胺甲酸乙酯接著劑可進一步包括其他組分。
只要可以獲得該目標胺甲酸乙酯接著劑,對該胺甲酸乙酯接著劑添加其他組分之時機沒有特別限制。
該其他組分之實例包含膠黏劑樹脂、顏料(pigment)、阻燃劑(flame retardant)、催化劑(catalyst)、蠟(wax)等。
該「膠黏劑樹脂」之實例包含苯乙烯類樹脂(styrene-based resins)、萜烯類樹脂(terpene-based resins)、脂肪族石油樹脂(aliphatic petroleum resins)、芳香族石油樹脂(aromatic petroleum resins)、松香酯(rosin esters)、丙烯酸樹脂(acrylic resins)、聚酯樹脂(polyester resins)(不包括聚酯多元醇(polyester polyols))等。
該「顏料」包含氧化鈦(titanium oxide)、炭黑(carbon black)等。
該「阻燃劑」之實例包含各種鹵素類阻燃劑、磷類阻燃劑、銻類阻燃劑(antimony-based flame retardants)、金屬氫氧化物類阻燃劑等。
該「催化劑」之實例包含各種金屬催化劑,例如,各種錫催化劑(月桂酸三甲基錫(trimethyltin laurate)、氫氧化三甲基錫(trimethyltin hydroxide)、二月桂酸二丁基錫(dibutyltin dilaurate)、馬來酸二丁基錫等(dibutyltin maleate)),鉛類催化劑(油酸鉛(lead oleate)、環烷酸鉛(lead naphthenate)、辛烯酸鉛(lead octenoate)等)和其它金屬催化劑(環烷酸(naphthenic acid)金屬鹽如環烷酸鈷(cobalt naphthenate));胺類催化劑如三亞乙基二胺(triethylenediamine)、四甲基乙二胺(tetramethylethylenediamine)、四甲基己二胺(tetramethylhexylenediamine)、二氮雜雙環烯(diazabicycloalkenes)和二烷基氨基烷基胺(dialkylaminoalkylamines)等。
較佳地,該「蠟」係如石蠟(paraffin wax)和微晶蠟 (microcrystalline wax)等。
只要可以獲得以本發明為基礎之該目標胺甲酸乙酯接著劑,該胺甲酸乙酯多元醇(A)、該聚異氰酸酯(B)、該塑化劑(c)與該安定劑(d)之混合方法沒有特別限制。該些組分(A)、(B)、(c)與(d)之混合順序也沒有特別限制。
本發明之接著劑,考量其可被輕易應用,可適當地包含溶劑(例如乙酸乙酯(ethyl acetate)、甲苯(toluene)等)。
該胺甲酸乙酯多元醇(A)對該聚異氰酸酯(B)之比率((A)/(B))係特別較佳從100/5至100/3。
不需要特別混合方法與特別混合順序,就可生產以本發明為基礎之單與雙組分形態兩者之胺甲酸乙酯接著劑。由此所得之胺甲酸乙酯接著劑在相容性方面很優秀,而且對玻璃或偏光片之脫模性也很優秀,即使在一條件下,例如在高溫與高溼下,該胺甲酸乙酯接著劑之脫模性也不會劣化。
將胺甲酸乙酯接著劑施加到基材之方法,沒有特別限制,只要可以獲得各種目標接著劑產品即可。該塗佈(或施加)方法之實例包含各種方法,例如:凹版塗佈(gravure coating)、線棒塗佈(wire bar coating)、氣刀塗佈(air knife coating)、模具塗佈(die coating)、浸塗佈(dip coating)和逗號塗佈(comma coating)方法。
以本發明為基礎之各種接著劑產品,具有一接著劑層形成在一基材上,例如藉由施加該上述之胺甲酸乙酯接著劑於該基材上,而且在電子元件、木工材料、建築材料和衛生材料等領域中,例如,常被用來 當作各種黏膠帶、各種黏膠封膠、黏膠膜、標籤、裝潢板材與防滑板材等。該些接著劑產物可被適當地用做各種玻璃板、偏光片等之表面保護膜。
以本發明為基礎之構件意指藉由使用該接著劑產品,而且較佳為接著劑膜,所生產之構件。只要能使用上述之胺甲酸乙酯接著劑來生產該構件,該構件之種類沒有特別限制。其實例包含電視(TV)、行動電話與平板電腦之顯示器;房屋之窗玻璃;汽車之玻璃;傢俱;尿布(diapers);容器等。
為了詳細描述本發明,本發明將以實施例之方式具體描述。這些為本發明之例示,而且不以此為限。
用來合成各種胺甲酸乙酯接著劑之原物料如下所示。
(a)多元醇
聚醚多元醇
(a1)聚丙二醇(Primepol FF3320(商品名),由三洋化成工業(Sanyo Chemical Industries,Ltd)所製造,數目平均分子量(Mn):3000,參官能基,羥值:56mgKOH/g,25℃熔融黏度:600mPa.s)
(a2)聚丙二醇(Primepol PX1000(商品名),由三洋化成工業所製造,Mn:1000,雙官能基,羥值:112mgKOH/g,25℃熔融黏度:200mPa.s)
(a3)聚四亞甲基醚二醇(Polytetramethylene ether glycol 850(商品名),由三菱化學公司(Mitsubishi Chemical Corporation)所製造,Mn:850,雙官能基,羥值:132mgKOH/g,25℃熔融黏度:320mPa.s)
(a4)聚乙二醇(PEG400(商品名)由日油公司(NOF Corporation)所製 造,Mn:400,雙官能基,羥值:280mgKOH/g,100℃動黏度(kinematic viscosity):7mm2/s)
(a5)聚乙二醇(PEG600(商品名)由日油公司所製造,Mn:600,雙官能基,羥值:192mgKOH/g,100℃動黏度:11mm2/s)
聚酯多元醇
(a6)從3-甲基-1,5-戊二醇/己二酸(3-methyl-1,5-pentane diol/adipic acid)所生產之聚酯多元醇(Kuraray Polyol P-1000(商品名),由可樂麗有限公司(Kuraray Co.,Ltd)所製造,Mn:1000,雙官能基,羥值:112mgKOH/g,25℃熔融黏度:1500mPa.s)
(a7)從己二酸/己二醇(hexane diol)/新戊二醇(neopentyl glycol)所生產之聚酯多元醇(HS2F-231AS(商品名),由豐國製油公司(Hokoku Corporation)所製造,Mn:2000,雙官能基,羥值:56mgKOH/g,75℃熔融黏度:600mPa.s)
(a8)從3-甲基-1,5-戊二醇/1,6-己二醇(3-methyl-1,5-pentane diol/1,6-hexane diol)所生產之聚碳酸酯多元醇(Kuraray Polyol C-1090(商品名),由可樂麗有限公司所製造,Mn:1000,雙官能基,羥值:112mgKOH/g,25℃熔融黏度:1800mPa.s)
(b)異氰酸酯單體
(b1)脂肪族異氰酸酯(1,6-二異氰酸根己烷(HDI)之異氰尿酸酯:Duranate 50M-HDI(商品名),由旭化成(Asahi Kasei Chemicals)公司所製造)
(b2)脂環族異氰酸酯(異佛爾酮二異氰酸酯(IPDI)之異氰尿酸酯: VESTANAT T1890/100(商品名),由住華拜耳胺甲酸乙酯有限公司(Sumika Bayer Urethane Co.,Ltd)所製造)
(b3)脂肪族異氰酸酯(苯二甲基二異氰酸酯(Xylilene diisocyanate,XDI):Takenate 500(商品名),由三井化學公司(Mitsui Chemicals Inc.)所製造)
(c)塑化劑
(c1)脂肪酸酯(IPM-R(商品名),由日油公司所製造,酸價(Acid value):0.5mgKOH/g或以下,折射率:1.434NP 25,熔融黏度:6.6mPa.s(20℃))
(c2)蓖麻油類二元酸酯(dibasic acid ester)(Ric Cizer S-4(商品名),由伊藤製油股份有限公司所製造,酸價:1.00mgKOH/g或以下,折射率:1.442NP 25,熔融黏度:9mPa.s(25℃))
(c3)蓖麻油類脂肪酸酯(Ric Cizer C-101(商品名),由伊藤製油股份有限公司所製造,酸價:1.7mgKOH/g或以下,折射率:1.454NP 25,熔融黏度:17mPa.s(25℃))
(c4)蓖麻油類甘油酯(glycerin ester)(Ric Cizer GR-301(商品名),由伊藤製油股份有限公司所製造,酸價:2.0mgKOH/g或以下,折射率:1.468NP 25,熔融黏度:215mPa.s(25℃))
(d)安定劑
(d1)酚類抗氧化劑(Adekastab AO-50(商品名),由艾德卡公司(Adeka Corporation)所製造,熔點:52℃,重量平均分子量(Mw):531)
(d2)酚類抗氧化劑(Irganox 1330(商品名),由巴斯夫所製造,熔點: 52℃,Mw:775.22)
(d3)磷類抗氧化劑(JP-650(商品名),由城北化學工業公司所製造,熔點:180℃,Mw:647)
(d4)羥基苯三嗪(Hydroxyphenyltriazine)類紫外線吸收劑(Tinuvine 479(商品名),由巴斯夫所製造,Mw:678)
(d5)受阻胺類光安定劑(Tinuvine 123(商品名),由巴斯夫所製造,Mw:737)
<胺甲酸乙酯接著劑之生產>
該些組分(a)與(b)係一起反應,以合成胺甲酸乙酯多元醇(A),而且然後將該胺甲酸乙酯多元醇(A)、聚異氰酸酯(B)、塑化劑(c)與安定劑(d)混合,因而獲得一胺甲酸乙酯接著劑。在該組分(a)與該組分(b)反應時,該組分(d)可被預先混合。胺甲酸乙酯接著劑之具體生產方法如下所述。所有數值以固含量為基礎。
[實例1]
如表1中所示,將68.6重量份之聚丙二醇(polypropylene glycol)(a1)、13.7重量份之聚丙二醇(a2)、2.1重量份之聚乙二醇(polyethylene glycol)(a4)與0.3重量份之酚類抗氧化劑(phenolic antioxidant)(d1)裝入一可分開燒瓶(separable flask)中,在110℃之溫度下真空攪拌與脫水120分鐘。然後將6.5重量份之HDI(b1)填充至該燒瓶中,而且藉由維持溫度在110℃、5小時,使該些組分在該燒瓶中反應,以獲得包括胺甲酸乙酯多元醇(A1)與該組分(d1)之混合物。
將8.8重量份之蓖麻油類二元酸酯(c2)與50重量份之乙酸乙 酯(以該混合物中所含之胺甲酸乙酯多元醇(A1)之100重量份為基準)添加至該混合物中,接著在常溫下攪拌與溶解,以獲得含該胺甲酸乙酯多元醇(A1)、該組分(c2)與該組分(d1)之溶液。
每100重量份之該胺甲酸乙酯多元醇溶液,混合當作該聚異氰酸酯(B)之4.2重量份之六亞甲基二異氰酸酯(hexamethylene diisocyanate)之異氰尿酸酯(Coronate HX(商品名),由東曹公司(TOSOH CORPORATION)所製造),以獲得實例1之胺甲酸乙酯接著劑,其包括胺甲酸乙酯預聚合物、該組分(c2)與該組分(d1)。
[實例2至20與比較實例1至6]
各種胺甲酸乙酯多元醇(A)((A2)至(A’26))係依據表1至3中所示之各種組成物來製備,而且各胺甲酸乙酯多元醇(A)係與該聚異氰酸酯(B)混合,以製備實例2至20與比較實例1至6之各胺甲酸乙酯接著劑,其包括各胺甲酸乙酯預聚合物。用來製備各胺甲酸乙酯接著劑之具體方法類似實例1中所提及者。
<用來評估之接著劑片之製造>
實例1至20與比較實例1至6之各胺甲酸乙酯接著劑係塗佈於非脫模型(non-release type)聚對苯二甲酸乙二酯(PET)膜(基材),厚度10μm,以形成各接著劑層。在該塗佈後,各接著劑層在80℃下乾燥5分鐘,而且用脫模型(release type)PET積層在各接著劑層之表面上,以產生用來評估之各接著劑片。
<評估試驗>
下列評估試驗係使用上述該些用來評估之接著劑片來進行。該些評估試驗之結果,如表1~3中所示。
1.對玻璃之脫模性(在常溫下)
將由上述方法所製成用來評估之接著劑片切割成測試片(25mm x 70mm),把該脫模型PET膜從該切割之測試片移除,將該非脫模型PET膜置於作為黏附體之玻璃板上,使該胺甲酸乙酯接著劑層與該玻璃板接觸,然後,使用軋輥(roller)一次施加2kg之負載,以獲得一積層物,其中該非脫模型PET膜透過該胺甲酸乙酯接著劑層,被貼附至該玻璃板。
將該非脫模型PET膜與該玻璃板之積層物儲存在溫度23℃與溼度50%之氣氛中28天,然後在溫度23℃與溼度50%之氣氛下,使用拉伸試驗機(由島津公司(Shimadzu Corporation)所製造),以180°之方向、300mm/min之拉伸速率,將該非脫模PET膜剝離,來測量該積層物之剝離強度。評估標準如下:
A:界面破壞(interfacial failure)(AF)發生且剝離強度小於4g/25mm。
B:界面破壞(AF)發生且剝離強度4g/25mm或以上。
C:界面破壞與膠合失效(AF/CF)發生
D:膠合失效(CF)發生
此處所使用之該「界面破壞(AF:接著失效)」意指在該玻璃板與該接著劑層間之界面上發生剝離,因此,在該玻璃板上沒有接著劑積汙(adhesive deposit)。另一方面,該「膠合失效(CF:膠合失效)」意指在該接著劑層內發生破壞,因此該接著劑層至少部分殘留在該玻璃板上。也就是說,其意指有一接著劑積汙。此外,因為使用該非脫模型PET膜,不會觀察到該接著劑層與該PET膜間之界面上有任何剝離現象。
2.對玻璃之脫模性(耐熱性)
利用在對玻璃之脫模性(在常溫下)中所提及之相同方法,獲得非脫模型PET膜與玻璃板之積層物,將其儲存在溫度150℃之氣氛中24小時,然後將該積層物進一步儲存在溫度23℃與溼度50%之氣氛下24小時。在溫度23℃與溼度50%之氣氛下,使用拉伸試驗機(由島津公司所製造),以180°之方向、300mm/min之拉伸速率,將該非脫模PET膜剝離,來測量該積層物之剝離強度。評估標準如下:
A:界面破壞(AF)發生且剝離強度小於100g/25mm。
B:界面破壞(AF)發生且剝離強度100g/25mm或以上。
C:界面破壞與膠合失效(AF/CF)發生
D:膠合失效(CF)發生
3.對玻璃之脫模性(耐溼性與耐熱性)
利用在對玻璃之脫模性(在常溫下)中所提及之相同方法,獲得非脫模型PET膜與玻璃板之積層物,將其儲存在溫度85℃與溼度85%之氣氛中21天,然後將該積層物進一步儲存在溫度23℃與溼度50%之氣氛下24小時。在溫度23℃與溼度50%之氣氛下,使用拉伸試驗機(由島津公司所製造),以180°之方向、300mm/min之拉伸速率,將該非脫模PET膜剝離,來測量該積層物之剝離強度。評估標準如下:
A:界面破壞(AF)發生且剝離強度小於15g/25mm。
B:界面破壞(AF)發生且剝離強度15g/25mm或以上。
C:界面破壞與膠合失效(AF/CF)發生
D:膠合失效(CF)發生
4.對玻璃之可溼性
將由上述方法所製成之該接著劑片切割出測試片(100mm x 100mm),把該脫模型PET膜從該切割出來之測試片移除,將該非脫模型PET膜置於作為黏附體之玻璃板上,使該胺甲酸乙酯接著劑層與該玻璃板接觸,然後進行測量,並記錄時間,直到該胺甲酸乙酯接著劑層完全均勻覆蓋該玻璃表面為止,因而使該玻璃板與該接著劑層之接觸面被完全溼潤。
A:對該玻璃板與該接著劑層間之接觸面,被完全溼潤所需時間係小於10秒。
B:對該玻璃板與該接著劑層間之接觸面,被完全溼潤所需時間係10秒或以上,且小於20秒。
D:對該玻璃板與該接著劑層間之接觸面,被完全溼潤所需時間係20秒或以上。
如表1至3中所示,實例1至20之各胺甲酸乙酯接著劑係衍生自各胺甲酸乙酯多元醇(A),其中,使用包含聚丙二醇與聚乙二醇兩者之經混合多元醇(a)作為原物料。
各實例之各胺甲酸乙酯接著劑包括一胺甲酸乙酯預聚合物,其係胺甲酸乙酯多元醇(A)與聚異氰酸酯(B)之反應產物;一蓖麻油類化合物(c)與一安定劑(d),而且在所有評估項目中,顯現出良好之結果。各胺甲酸乙酯接著劑在各組分相容性方面亦相當優良。
另一方面,有關比較實例之胺甲酸乙酯接著劑,在該些評估項目之任一項中,被評定為「D」級。在比較實例1之胺甲酸乙酯接著劑中,其中該塑化劑(c)不包括蓖麻油類化合物,使得要溼潤作為黏附體之玻璃板,需要一點時間,導致可溼性不佳。此外,比較實例1之胺甲酸乙 酯接著劑在各組分之相容性方面較差。比較實例2之胺甲酸乙酯接著劑不包括塑化劑(c),因此不僅脫模性差,而且相容性也非常差。
在比較實例3至5之胺甲酸乙酯接著劑方面,各胺甲酸乙酯多元醇(A’)並非衍生自聚丙二醇與聚乙二醇兩者。比較實例6之胺甲酸乙酯接著劑不包括安定劑(d),因此,在可溼性或脫模性任一方面,比較實例3至6之胺甲酸乙酯接著劑很差。
上述結果顯示,胺甲酸乙酯接著劑,其包括一胺甲酸乙酯多元醇,其係由聚丙二醇與聚乙二醇之混合多元醇所合成;一蓖麻油類化合物與一安定劑,具有優良之各組分相容性,而且即使在嚴苛之條件下,例如在高溫與高溼下,也不會造成脫模性劣化,以及在短時間內,也能夠使玻璃板與薄膜均勻地積層。
[產業可應用性]
本發明提供一種胺甲酸乙酯接著劑,而且該胺甲酸乙酯接著劑被施加於基材,例如紙或塑膠,而且該經塗佈之基材能被較佳地用來製造各種接著劑產品,例如黏膠帶、黏膠標籤與黏膠膜。其可以製造更適合之表面保護膜,其會被貼附於行動電話、智慧型手機、個人電腦(PC)、平板電腦與電視(TV)之顯示器;房屋之窗玻璃等。
Claims (6)
- 一種包含一胺甲酸乙酯多元醇、一聚異氰酸酯、一塑化劑與一安定劑之胺甲酸乙酯接著劑,其中該胺甲酸乙酯多元醇係一聚乙二醇和一聚丙二醇與一異氰酸酯單體之聚合物,而且該塑化劑包含一蓖麻(castor)油類化合物。
- 如申請專利範圍第1項所述之胺甲酸乙酯接著劑,其包含以該聚乙二醇、該聚丙二醇、該異氰酸酯單體、該塑化劑與該安定劑之總重為100重量份為基準,數量為3至30重量份之該塑化劑。
- 如申請專利範圍第1項或第2項所述之胺甲酸乙酯接著劑,其中,在25℃,該蓖麻油類化合物之黏度從5至400mPa.s。
- 一種塗有如申請專利範圍第1項至第3項中任一項所述之胺甲酸乙酯接著劑之接著劑膜。
- 一種以如申請專利範圍第4項所述之接著劑膜保護之構件。
- 一種用於製造胺甲酸乙酯接著劑之製程,其包含下列步驟:混合一聚乙二醇和一聚丙二醇與一異氰酸酯單體,以製備一胺甲酸乙酯多元醇;以及進一步將一聚異氰酸酯與該胺甲酸乙酯多元醇混合,以製備一胺甲酸乙酯預聚合物,其中該胺甲酸乙酯預聚合物包含一塑化劑與一安定劑,並且該塑化劑包含一蓖麻油類化合物。
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| JP2016117638A JP2017222746A (ja) | 2016-06-14 | 2016-06-14 | ウレタン粘着剤 |
| JP2016-117638 | 2016-06-14 |
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| CN (1) | CN108779379A (zh) |
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| TWI886809B (zh) * | 2023-04-07 | 2025-06-11 | 南韓商三星Sdi股份有限公司 | 用於表面保護的黏合劑膜、黏合劑片以及光學構件 |
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| JP6801821B2 (ja) * | 2018-04-06 | 2020-12-16 | Dic株式会社 | ウレタン粘着剤及び粘着シート |
| JPWO2020095484A1 (ja) * | 2018-11-06 | 2021-02-25 | Dic株式会社 | 粘着剤組成物及び表面保護フィルム |
| EP3659797A1 (en) * | 2018-11-29 | 2020-06-03 | Henkel AG & Co. KGaA | Polyurethane adhesive having high chemical resistance |
| KR102411610B1 (ko) * | 2019-04-08 | 2022-06-22 | 주식회사 엘지화학 | 경화성 수지 조성물 |
| JP6705530B1 (ja) * | 2019-05-15 | 2020-06-03 | 東洋インキScホールディングス株式会社 | 水酸基末端ウレタンプレポリマー含有溶液とその製造方法、粘着剤、および粘着シートとその製造方法 |
| WO2021246360A1 (ja) * | 2020-06-02 | 2021-12-09 | 東洋インキScホールディングス株式会社 | 2液硬化型接着剤、積層体及び包装体 |
| JP7464464B2 (ja) * | 2020-06-29 | 2024-04-09 | アイカ工業株式会社 | ウレタン粘着剤組成物及びこれを塗布した粘着フィルム |
| JP6866957B1 (ja) * | 2020-10-27 | 2021-04-28 | 東洋インキScホールディングス株式会社 | 皮膚貼付用粘着剤、硬化物および皮膚貼付用粘着テープ |
| CN114015405B (zh) * | 2021-12-07 | 2023-04-07 | 襄阳三沃航天薄膜材料有限公司 | 一种高性能聚氨酯压敏胶及其制备方法和应用 |
| CN115141597B (zh) * | 2022-08-04 | 2023-04-28 | 河南工程学院 | 一种蓖麻油基可降解压敏胶及其制备方法 |
| WO2025154653A1 (ja) * | 2024-01-15 | 2025-07-24 | 日東電工株式会社 | 表面保護フィルム |
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| JP3978884B2 (ja) * | 1998-08-31 | 2007-09-19 | 東洋インキ製造株式会社 | ポリウレタン粘着剤組成物及び該組成物を用いた塗工物 |
| JP2000328035A (ja) | 1999-05-24 | 2000-11-28 | Toyo Ink Mfg Co Ltd | 粘着剤組成物 |
| KR100859428B1 (ko) * | 2000-08-07 | 2008-09-23 | 다우 글로벌 테크놀로지스 인크. | 원-파트 습기 경화성 폴리우레탄 접착제 |
| US7098291B2 (en) * | 2002-06-10 | 2006-08-29 | Rohm And Haas Company | Urethane polymer compositions |
| JP5707715B2 (ja) * | 2010-03-17 | 2015-04-30 | 東洋インキScホールディングス株式会社 | ウレタン粘着剤 |
| ES2796073T3 (es) * | 2013-08-23 | 2020-11-25 | Mitsui Chemicals Inc | Isocianato bloqueado, composición de recubrimiento, composición adhesiva y artículo |
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2017
- 2017-05-24 BR BR112018017103A patent/BR112018017103A2/pt not_active Application Discontinuation
- 2017-05-24 CN CN201780019304.4A patent/CN108779379A/zh active Pending
- 2017-05-24 EP EP17729560.7A patent/EP3469033A1/en not_active Withdrawn
- 2017-05-24 WO PCT/JP2017/019376 patent/WO2017217199A1/en not_active Ceased
- 2017-05-24 KR KR1020187026519A patent/KR20190018132A/ko not_active Withdrawn
- 2017-05-26 TW TW106117515A patent/TW201816057A/zh unknown
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| TWI886809B (zh) * | 2023-04-07 | 2025-06-11 | 南韓商三星Sdi股份有限公司 | 用於表面保護的黏合劑膜、黏合劑片以及光學構件 |
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| BR112018017103A2 (pt) | 2019-01-15 |
| WO2017217199A1 (en) | 2017-12-21 |
| JP2017222746A (ja) | 2017-12-21 |
| KR20190018132A (ko) | 2019-02-21 |
| CN108779379A (zh) | 2018-11-09 |
| US20190085223A1 (en) | 2019-03-21 |
| EP3469033A1 (en) | 2019-04-17 |
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