TWI475081B - 塗敷組合物及其製備方法以及利用該塗敷組合物的轉印薄片 - Google Patents

塗敷組合物及其製備方法以及利用該塗敷組合物的轉印薄片 Download PDF

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TWI475081B
TWI475081B TW102116424A TW102116424A TWI475081B TW I475081 B TWI475081 B TW I475081B TW 102116424 A TW102116424 A TW 102116424A TW 102116424 A TW102116424 A TW 102116424A TW I475081 B TWI475081 B TW I475081B
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Dong-Joo Kwon
Won-Kook Kim
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Description

塗敷組合物及其製備方法以及利用該塗敷組合物的轉印薄片
本發明涉及一種成型品的裝飾用轉印薄片,更詳細地,涉及電子束(EB)固化與紫外線(UV)固化時,利用手感特性優異的塗敷組合物及其製備方法以及利用該塗敷組合物的轉印薄片。
以往,為了給製備電子束(EB)固化或紫外線(UV)固化時利用的轉印薄片賦予柔軟的手感特性,應用利用矽類添加劑或矽類多元醇的氨基甲酸酯類塗敷液的方式中,存在因添加劑介面移行而引起的附著不良及耐磨耗性下降等問題,同時存在卷取轉印薄片時出現阻塞現象或印刷時出現溶劑侵蝕的現象的問題。
韓國專利公開公報第10-2010-0026012號中雖然提供了一種能夠容易進行成型加工,並且具有耐刮擦性及耐磨耗性等的膜強度優異的硬塗膜,但是,未公開手感特性優異的塗敷組合物等,因此,在解決上述問題之前仍存在困難。
本發明的目的在於,提供一種塗敷組合物,通過賦予矽大分子單體來實現耐磨耗性及柔軟的觸感,並同時能夠解決阻塞現象、添加劑介面移行、附著不良等問題。
本發明的再一目的在於,提供一種製備上述塗敷組合物的方法。
本發明的另一目的在於,提供一種利用上述塗敷組合物的轉印薄片。
用於實現上述一個目的,本發明實施例的塗敷組合物,其特徵在於,包含:紫外線(UV)固化型樹脂,其包含丙烯醯基(acryloyl)官能團,異氰酸酯(isocyanate)類化合物、光引發劑、抗氧化劑及溶劑;包含丙烯醯基(acryloyl)官能團的紫外線(UV)固化型樹脂是對包含環氧官能團的丙烯酸酯(acrylate)單體及矽大分子單體進行共聚合後使丙烯酸(acrylic acid)單體進行加成反應而製備的。
用於實現達成上述再一目的,本發明的實施例的塗敷組合物的製備方法,其特徵在於,包括:準備包含丙烯醯基(acryloyl)官能團的紫外線(UV)固化型樹脂的步驟;混合上述紫外線(UV)固化型樹脂與異氰酸酯(isocyanate)類化合物、光引發劑、抗氧化劑及溶劑的步驟。
用於實現上述另一目的,本發明的實施例的轉印薄片,其特徵在於,包括含有塗敷組合物的塗敷層。上述塗敷層,其特徵在於,包含:基材膜,以及紫外線(UV)固化型樹脂,其形成於上述基材膜的單面,並包含丙烯醯基(acryloyl)官能團,異氰酸酯(isocyanate)類化合物、光引發劑、抗氧化劑及溶劑;包含丙烯醯基(acryloyl)官能團的上述紫外線(UV) 固化型樹脂是對包含環氧官能團的丙烯酸酯(acrylate)單體及矽大分子單體進行共聚合後使丙烯酸(acrylic acid)單體進行加成反應而製備的。
本發明的塗敷組合物通過將矽類大分子單體導入到紫外線(UV)固化型樹脂,既實現柔軟的觸感,又將耐磨耗性優異化,將粘性最小化,能夠改善阻塞現象。
並且,本發明的轉印薄片通過利用本發明的塗敷組合物來提高耐溶劑性,因此,即使不使用過多的固化劑也能夠防止印刷特性及溶劑侵蝕現象。
110‧‧‧基材膜
120‧‧‧塗敷層
115‧‧‧離型層
130‧‧‧粘合層
第1圖為本發明之轉印薄片。
第2圖為本發明另一實施例之離型轉印薄片。
參照以下實施例會讓本發明的優點和特徵以及實現這些優點和特徵的方法更加明確。但是,本發明不局限於以下所公開的實施例,能夠以互不相同的各種方式實施,本實施例只用於使本發明的公開內容更加完整,有助於本發明所屬技術領域的普通技術人員完整地理解發明的範疇而提供,本發明根據權利要求書的範疇而定義。
以下對本發明的塗敷組合物及其製備方法以及利用該塗敷組合物的轉印薄片進行詳細的說明。
本發明的塗敷組合物包含含有丙烯醯基官能團的紫外線(UV)固化型樹脂、異氰酸酯類化合物、光引發劑、抗氧化劑及溶劑。
紫外線(UV)固化型樹脂
在本發明中,包含丙烯醯基官能團的紫外線(UV)固化型樹脂,其特徵在於,該紫外線(UV)固化型樹脂是對包含環氧官能團的丙烯酸酯(acrylate)單體及矽大分子單體進行共聚合後使丙烯酸(acrylic acid)單體進行加成反應而製備的。
更詳細地,對包含環氧官能團的丙烯酸酯單體及矽大分子單體進行共聚合,並能夠製備丙烯酸-矽大分子單體共聚物,此時,為了調節上述丙烯酸-矽大分子單體共聚物的玻璃轉化溫度(Tg),能夠添加(甲基)丙烯酸酯類單體或乙烯類單體。
上述(甲基)丙烯酸酯類單體的例子為(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸異丙基、(甲基)丙烯酸n-丁基、(甲基)丙烯酸異丁基、(甲基)丙烯酸t-丁基、(甲基)丙烯酸2-乙基己基、(甲基)丙烯酸月桂酯、甲基丙烯酸十八烷基酯等(甲基)丙烯酸烷基酯(但烷基為碳原子數1至8的烷基,特別是優選為碳原子數1至6的烷基);如(甲基)丙烯酸苯基酯等丙烯酸芳基酯(但芳基為碳原子數6至20的芳基);如(甲基)丙烯酸環己基酯等的(甲基)丙烯酸環狀丙烯酸烷基酯(但環狀烷基為碳原子數3至12的環狀烷基);如聚乙二醇(甲基)丙烯酸酯單體等(甲基)丙烯酸聚亞烷基二醇酯等(甲基)丙烯酸酯、(甲基)丙烯酸烷氧基丙烯酸烷基酯(烷氧基烷基的碳原子數為1至6)。此時,甲基丙烯酸甲酯最容易提高上述丙烯酸-矽大分子單體共聚物的玻璃轉化溫度。
上述乙烯類單體的例子為苯乙烯、醋酸乙烯、丙酸乙烯、苯甲酸乙烯及乙烯基甲苯等。
上述包含環氧官能團的丙烯酸酯類單體,其特徵在於,該丙烯酸酯類單體為選自丙烯酸縮水甘油酯、甲基丙烯酸酯、甲基丙烯酸縮水 甘油酯、縮水甘油-α-丙烯酸乙酯、縮水甘油-α-N-丙基丙烯酸酯、縮水甘油-α-丁基丙烯酸酯、3,4-環氧丁基丙烯酸甲酯、3,4-環氧丁基丙烯酸酯、甲基丙烯酸環氧樹脂、6,7-環氧庚基丙烯酸酯、6,7-環氧庚基-α-丙烯酸乙酯的組中的某一種。其中,甲基丙烯酸縮水甘油酯是包含環氧官能團的所常用化的丙烯酸酯系單體中最便宜的,最優選為與為了調節上述丙烯酸-矽大分子單體共聚物的玻璃轉化溫度而所添加的甲基丙烯酸甲酯自由基反應時具有類似的反應性的單體。
並且,本發明中使用的矽大分子單體用以下化學式1來表示。
上述化學式中,R1 及R2 是相互獨立的碳原子數1~12的烷基;R3 及R4 是相互獨立的碳原子數1~12的烷基;Y是氫或碳原子數1~12的烷基;n是60~300的整數。
上述矽大分子單體的重均分子量為500~22000範圍內。通過這樣限定矽大分子單體的重均分子量,得到優異的耐磨耗性並能夠實現柔軟的手感特性。更詳細地,在上述矽大分子單體的重均分子量超過上述範圍且小於500的情況下,要實現的柔軟觸感特性甚微,而當上述矽大分子單體的重均分子量超過上述範圍且大於22000的情況下,則引起共聚合的單體及相容性的問題,導致存在很難具備均勻的聚合物,並且製成品的透明度明顯變差的問題。
在這裡,大分子單體為Macromolecular Monomer的簡體,是指只有在分子的末端含有聚合性官能團的聚合物及低聚物,是阻塞(Block) 或移植(Graft)聚合物的前體。通過利用上述大分子單體與其他聚合物進行共聚合,能夠容易地合成結構明確的阻塞(Block)及移植(Graft)聚合物。特別是,其中,矽大分子單體在含有作為低表面能量的矽環的同時混合合成的阻塞(Block)及移植(Graft)聚合物與樹脂時,在樹脂表面上具有偏析、濃縮的性質。
通過向包含環氧官能團的上述丙烯酸酯單體導入矽大分子單體,能夠實現柔軟的觸感,能夠維持優異的耐磨耗性。並且,對粘性進行最小化,以轉印薄片狀態在卷取膜規定長度以上的情況下,也能夠防止阻塞現象,通過提高耐溶劑性能夠防止印刷特性及溶劑侵蝕現象。
上述丙烯酸單體能夠使用丙烯酸、甲基丙烯酸、羧基丙烯酸乙酯,羧基甲基丙烯酸乙酯、羧基丙烯酸丙酯、羧甲基丙烯酸丙酯及羧基丁基甲基丙烯酸酯等。本發明中,優選地,結束加成反應後,使用共聚物的玻璃轉化溫度最高的丙烯酸單體或甲基丙烯酸單體,特別是,更優選地,使用照射紫外線(UV)時固化最好的丙烯酸單體。
此時,通過上述丙烯酸-矽大分子單體共聚物與丙烯酸單體的加成反應,能夠製備包含分子量為10000~140000的丙烯醯基官能團的紫外線(UV)固化型樹脂。
相對於包含環氧官能團的上述丙烯酸酯單體100重量份,上述矽大分子單體為0.1重量份~5重量份。在上述丙烯酸酯單體100重量份中小於0.1重量份的情況下,很難表現要實現的柔軟的觸感,而當大於5重量份的情況下,存在無法塗敷所添加的層的問題。
本發明的一實施例的包含環氧官能團的丙烯酸酯單體100重量份中,使用矽大分子單體0.1重量份~5重量份,作為溶劑的乙酸丙二醇單甲基醚酯100重量份~500重量份,作為催化劑的偶氮二異丁腈(AIBN)0.5 重量份~5重量份,作為鏈轉移劑的十二烷基硫醇0.1重量份~5重量份,在65℃的溫度下進行12小時反應後獲得丙烯酸-矽大分子單體共聚物。
之後,在每100重量份的包含環氧官能團的上述丙烯酸酯,添加丙烯酸單體15重量份~100重量份、作為稀釋溶劑的乙酸丙二醇單甲基醚酯10重量份~100重量份及作為催化劑的三乙胺0.2重量份~1重量份,並通過在120℃的溫度下進行10小時反應,能夠製備包含分子量為10000~140000的丙烯醯基官能團的紫外線(UV)固化型樹脂。
其他多個成分
其他不同添加劑還可添加於上述紫外線(UV)固化型樹脂中。上述添加劑包括異氰酸酯類化合物、光引發劑、抗氧化劑及溶劑等。
為了利用上述塗敷組合物來形成塗敷膜,事先進行與作為熱固化劑的異氰酸酯類化合物混合的步驟。上述異氰酸酯類化合物在製備包含丙烯醯基官能團的紫外線(UV)固化型樹脂時,與通過丙烯酸的羧基官能團與環氧官能團的加成反應自然發生的第二羥基官能團進行反應,並由氨基甲酸酯鍵來形成交聯鍵。
異氰酸酯類化合物的例子為如六甲撐二異氰酸酯(HMDI)、異佛爾酮二異氰酸酯(IPDI,Isophorone diisocyanate)的脂肪族異氰酸酯類化合物和/或甲苯二異氰酸酯(TDI,Toluene diisocyanate)的芳香族異氰酸酯類化合物,其中,在耐候性角度上,優選地,使用如六甲撐二異氰酸酯(HMDI,hexamethylene diisocyanate)的無黃變性固化劑。
調節上述異氰酸酯類化合物的含量使該化合物內的異氰酸酯基的當量與通過丙烯酸的羧基官能團及環氧官能團的加成反應自然發生的第二羥基官能團成適當的混合比,相對於包含丙烯醯基官能團的上述紫外線(UV)固化型樹脂100重量份,上述異氰酸酯類化合物的含量為1重量份 ~15重量份,特別是優選為5重量份~12重量份。
若異氰酸酯類化合物的含量小於上述1重量份,卷取時則發生阻塞不良,塗膜強度下降,導致注塑成型時發生白色混濁現象或彎曲部爆裂現象等,而大於15重量份的情況下,由於膜過硬,導致注塑成型時發生裂紋或切割時出現過多的雜質粉末,因此不優選。
對上述光引發劑沒有特別的限定,但只能使用本發明所屬技術領域中公知的光引發劑。特別是,上述光引發劑的例子為豔佳固(Irgacure)250(Bayer)、Uvacure 1590(SK Cytec)等,上述自由基光引發劑的例子為豔佳固(Irgacure)184、豔佳固(Irgacure)819、豔佳固(Irgacure)907、豔佳固(Irgacure)127及Vicure30(BASF)等。
上述光引發劑的含量在包含丙烯醯基官能團的上述紫外線(UV)固化型樹脂100重量份中為1重量份~15重量份,特別是優選為5重量份~13重量份。若光引發劑含量小於上述1重量份,注塑成型後硬度則降低。並且,當大於15重量份的情況下,由於固化後殘留的成分存在引發味道或人體有害成分殘留在表面的問題。
並且,上述抗氧化劑能夠使用苯酚類抗氧化劑、磷類抗氧化劑及螯合物抗氧化劑等。例如,商標名抗氧劑1010、1035、1076及1222(汽巴精化有限公司)等能夠作為商業用來使用。上述抗氧化劑在包含丙烯醯基官能團的上述紫外線(UV)固化型樹脂100重量份中為0.1重量份~2重量份,特別是優選為0.1重量份~1重量份。若抗氧化劑的含量小於0.1重量份的情況下,容易在塗敷組合物中發生黃變現象。並且,抗氧化劑的含量大於2重量份時,則致使抗氧效果飽和,相反,在塗敷組合物中所需要的其他 物理性質會降低。
並且,組成上述塗敷組合物的成分添加於溶劑中被使用,作為溶劑使用如粘結劑樹脂、潛在性固化劑、其他添加劑及相容性優異的有機溶劑等效果好。作為以上述目的使用的溶劑,將選自乙酸乙酯、乙酸丁酯、甲氧基丙酸甲酯、乙氧基丙酸乙酯(EEP)、乳酸乙酯、丙二醇甲醚醋酸酯(PGMEA)、丙二醇甲醚醋酸酯、乙基醚醋酸酯、丙酮、甲基異丁基酮、環己酮、二甲基甲醯胺(DMF)、NN-二甲基乙醯胺(DMAc)、N-甲基-2-吡咯烷酮(NMP)、γ-丁內酯、二乙醚、乙二醇二甲醚、二甘醇二甲醚、四氫呋喃(THF)、甲苯、二甲苯、己烷、庚烷及辛烷中的溶劑單獨使用或混合一種以上來使用。
上述溶劑的含量在包含丙烯醯基官能團的上述紫外線(UV)固化型樹脂100重量份中為200重量份~700重量份,特別是優選為300重量份~400重量份。若溶劑的含量小於200重量份,固化劑的粘度則提高,從而對工作性不利,而大於700重量份時,固體成分低則不適合調節塗膜厚度,因此不優選。
本發明的塗敷組合物中能夠添加塗敷液組合物中通常所使用的適當量的均化劑、消泡劑等,可根據需要還可添加表面活性劑、保存鎮定劑、增感劑及防條痕劑等具有相容性的添加劑。並且,為了維持規定的塗敷組合物的硬度,可包含矽溶膠,矽溶膠是基本成分為二氧化矽(SiO2 )的膠體溶液,膠體粒子為球狀,粒徑為6nm~50nm,粒子比較小,滲透力強,附著力優異,又透明,適合形成塗敷組合物。
本發明提供一種塗敷組合物的製備方法,其特徵在於,包括:準備包含丙烯醯基官能團的紫外線(UV)固化型樹脂的步驟;混合上述紫外線(UV)固化型樹脂與異氰酸酯類化合物、光引發劑、抗氧化劑及溶劑 的步驟。
包含丙烯醯基官能團的上述紫外線(UV)固化型樹脂是對包含環氧官能團的單體及矽大分子單體進行共聚合後能夠使丙烯酸單體進行加成反應而製備的。此時,包含環氧官能團的單體及矽大分子單體的共聚合能夠適用溶液聚合、光學聚合及本體聚合等多種方式。此時,還可包含紫外線(UV)引發劑、熱固化劑等添加劑,為了調節粘度或提高分散性還可包含如甲基異丁基酮(MIBK)的溶劑。
本發明的塗敷組合物的製備方法中,未提及的關於紫外線(UV)固化型樹脂的部分按照上述內容。
參照第1圖,所圖示的轉印薄片作為能夠形成手感優異的成型裝飾用塗層的膜,包括基材膜110及塗敷層120。
基材膜110能夠利用由聚丙烯類樹脂、聚乙烯類樹脂、聚醯胺類樹脂、聚酯類樹脂、聚丙烯酸類樹脂、聚氯乙烯類樹脂、丙烯酸類樹脂、聚碳酸酯類樹脂、氯乙烯類樹脂及氨基甲酸酯類樹脂等材質所形成的基材膜,但並不局限於此,能夠利用由多種材質形成的基材膜。
上述基材膜10的厚度可以為0.02mm~0.1mm,但更優選為0.03mm~0.08mm。若上述厚度小於0.02mm,成型時則容易發生面料破裂現象,若大於0.1mm時有可能發生膜的處理性及加工性下降或粘合力等的物理性質降低的問題,在經濟費用方面也存在缺點。
塗敷層120包含本發明的塗敷組合物的紫外線(UV)固化型樹脂。在約50℃~170℃左右的溫度下對包含上述紫外線(UV)固化型樹脂的塗敷組合物大概處理30秒鐘~2分鐘來形成。形成於基材膜110的單面的塗敷層120的塗敷組合物通過抑制粘結性,使能夠容易在轉印薄片形 成印刷層、蒸敷層等,並提高薄片處理性。
並且,本發明的塗敷組合物通過向紫外線(UV)固化型樹脂賦予矽大分子單體,從而維持柔軟的觸感,並實現手感特性優異的塗敷層。
上述塗敷層120的厚度可以為大約3μm~10μm。當塗敷層小於3μm的情況下,則存在無法得到適當的硬度的憂慮,而當大於10μm的情況下,紫外線(UV)固化時很難使紫外線(UV)滲透至膜的下端部,從而也同樣存在硬度降低的憂慮。
第2圖簡要表示了本發明的再一實施例的轉印薄片,即為離型轉印薄片。參照第2圖,所圖示的轉印膜包括基材膜110、塗敷層120、離型層115及粘合層130。
塗敷層120形成於基材膜110的單面,並包含本發明的塗敷組合物的紫外線(UV)固化型樹脂。離型層115形成於基材膜110與塗敷層120之間,在成型品附著轉印薄片後,為了使基材膜110離型而形成。
為了形成離型層115能夠使用環氧類、環氧-三聚氰胺類、氨基醇酸類、丙烯酸類、三聚氰胺類、矽類、氟類、纖維素類、脲醛樹脂類、聚烯烴類及石蠟類等離型劑,但並不局限於此。本發明中對於上述離型層的厚度沒有特別的限制,考慮本發明的目的能夠適當地進行控制。
使粘合層130形成於塗敷層120上,轉印薄片附著於成型品。為了形成上述粘合層130能夠使用聚丙烯類樹脂、聚苯乙烯類樹脂、聚醯胺類、氯化聚烯烴類樹脂、氯化乙烯醋酸乙烯酯共聚物樹脂及橡膠類樹脂等。為了保護粘合層130,轉印薄片(未圖示)能夠附著於粘合層130上。
將具有第2圖所示的結構的轉印薄片附著於成型品,並進行 能量固化的情況下,成型品的表面的塗敷按照包含在本發明的塗敷組合物的具有甲基丙烯醯氧基官能團的紫外線(UV)固化型樹脂的固化,基本上提供耐刮擦性、耐化學性、耐磨耗性及高表面硬度等。
並且,雖然未圖示,本發明的轉印薄片在上述塗敷層120與粘合層130之間還能夠形成印刷層或蒸敷層中一種以上的層。
印刷層(未圖示)能夠通過凹版印刷塗敷工法來形成。上述印刷層具有相同或不同的圖案,從而能夠以人物照片、模式、多種顏色、多種圖案等所需的形態來自由體現。
在上述塗敷層120的上部形成印刷層(未圖示)的情況下,由於包括含有紫外線(UV)固化型樹脂的塗敷組合物的塗敷層,在應用轉印薄片時,不出現阻塞現象或溶劑侵蝕現象,因此,上述印刷層的圖案能夠具有審美性及立體性。
並且,本發明的轉印薄片還可包括形成於印刷層(未圖示)與粘合層(130)之間的蒸敷層(未圖示)。上述蒸敷層能夠通過真空蒸敷法來形成,作為其材質能夠使用鋁(Al)、銅(Cu)、銀(Ag)、鉑(Pt)、錫(Sn)、鉻(Cr)及鎳(Ni)等。
形成上述蒸敷層(未圖示)時的厚度優選為10nm~100nm。若上述蒸敷層的厚度小於10nm的情況下,由於表面反射而導致光澤效果甚微,相反,若蒸敷層的厚度大於100nm的情況下,存在發生裂紋(crack)及附著性下降的問題。
製備轉印薄片
實施例
利用丙二醇甲醚醋酸酯單體(PGMEA)溶劑對甲基丙烯酸甲酯(MMA)、甲基丙烯酸縮水甘油酯(GMA)及分子量為10000的矽大分子單體進行共聚合而成為固體成分40%,從而獲得了重均分子量為30000的丙烯酸-矽大分子單體共聚物。此時,上述矽大分子單體在以下[通式1]中,將n為130~140。
相對於甲基丙烯酸縮水甘油酯(GMA)100重量份,上述矽大分子單體的含量為5重量份。之後,在所製備的上述丙烯酸-矽大分子單體共聚物中包含環氧官能團的上述丙烯酸酯每100重量份添加丙烯酸單體50重量份,並在120℃的溫度下,進行10小時反應,從而製備分子量為50000的包含丙烯醯基官能團的紫外線(UV)固化型樹脂。
相對於所製備的上述紫外線(UV)固化型樹脂100重量份,混合光固化劑豔佳固(Irgacure 184)10重量份、作為熱固化劑的六乙烯二異氰酸酯三聚體8重量份、矽溶膠(粒徑為12nm)100重量份、抗氧化劑(抗氧劑:irganox 1010)1重量份及溶劑(MEK)600重量份,來製備塗敷組合物。
之後,通過微型凹版塗敷法,以約1μm的厚度,在厚度為50μm的PET基材膜的表面塗敷三聚氰胺類離型劑之後,在150℃下加熱30秒鐘,由此形成了離型層。接著,通過微型凹版塗敷法,以約6μm的厚度, 在離型層上塗敷所製備的塗敷組合物。之後,在150℃下加熱所塗敷的塗敷液30秒鐘,來形成含有塗敷組合物的塗敷層,從而製備轉印薄片。之後,通過凹版塗敷方法,形成厚度為3μm的印刷層之後,形成厚度為1.5μm的粘合層,從而製備轉印薄片。
比較例
將丙二醇甲醚醋酸酯單體1000g投入到反應器中,並添加甲基丙烯酸甲酯400g、甲基丙烯酸酯400g、丙二醇甲醚醋酸酯單體500g、作為引發劑的偶氮二異丁腈(AIBN)12g及作為鏈轉移劑的十二烷基硫醇1g,在65℃下進行聚合10小時後,添加氫醌0.5g來停止反應,從而製備包含環氧官能團的丙烯酸酯類共聚物。上述所製備的丙烯酸酯類共聚物的重均分子量為28000,分子量分佈寬度為2.5。
在上述所製備的包含環氧官能團的丙烯酸共聚物中添加丙烯酸300g、三乙胺2g之後,在120℃的反應溫度下,製備紫外線(UV)固化型樹脂。
添加上述所製備的紫外線(UV)固化型樹脂50g、季戊四醇四丙烯酸酯85g、紫外線(UV)引發劑豔佳固(Irgacure)184.3g、豔佳固(Irgacure)250.3g,來製備塗敷組合物。
除了包括含有上述塗敷組合物的塗敷層之外,利用與上述實施例1相同的方法來製備轉印薄片。
評價物性
(1)抗阻塞性
卷取上述所製備的轉印薄片3000m,並放置3天。之後,掌 握了回卷(rewinding)及阻塞現象,根據ASTM-1893的基準,以上、中、下來評價抗阻塞性。此時,阻塞現象是指轉印薄片之間相互粘合的現象。
(2)評價硬度
利用PC/ABS樹脂來對上述所製備的轉印薄片進行注塑成型後,使所成型的注塑物進行紫外線固化,並製備最終耐磨耗性評價用注塑樣品,並在鉛筆硬度計上掛上1kg的砝碼,評價硬度。
(3)評價耐磨耗性的官能
利用PC/ABS樹脂對上述所製備的轉印薄片進行注塑成型後,使所成型的注塑物進行紫外線固化,並製備最終耐磨耗性評價用注塑樣品,在RCA測驗機上掛上1kg的砝碼,從而評價發生刮痕的最少次數。
(4)評價手感特性官能
對男女各30名,共60名使用適用上述實施例的轉印薄片的粘附體時的手感進行了官能評價。評價者評價了上述轉印薄片的手感,上述實驗結果的平均值見以下表1。(○:優異,△:一般,×:差)
參照上述表1,可見實施例的抗阻塞性優異,並確認了卷取轉印薄片及保管時的優異性。並且,能夠確保比起比較例更優異的硬度,在剝離離型紙之後,也能夠利用塗敷層確保耐磨耗性。最後,針對手感特性的官能評價,評價者評價為柔軟的特性優越,通過在塗敷組合物導入矽大 分子單體,可知上述實施例的塗敷層具有光滑的表面特性。
與此相比,可見比較例的抗阻塞性、硬度及耐磨耗性均比實施例差,由於使用不包含矽大分子單體的紫外線(UV)固化型樹脂,因而塗敷層無法維持光滑的表面特性,從而對於手感特性沒有得到好的評價。
以上,主要說明了本發明的實施例,但這僅僅是例示性的,如果是本發明所屬技術領域的普通技術人員應當理解能夠從中實施各種變形及等同的其他實施例。因此,本發明所要保護的真正的技術範圍應借助所附的申請專利範圍而進行判斷。
110‧‧‧基材膜
120‧‧‧塗敷層

Claims (9)

  1. 一種塗敷組合物,其特徵在於,包含:紫外線(UV)固化型樹脂,其包含丙烯醯基(acryloyl)官能團;異氰酸酯(isocyanate)類化合物;光引發劑;抗氧化劑;以及溶劑;包含丙烯醯基(acryloyl)官能團的該紫外線(UV)固化型樹脂是對包含環氧官能團的丙烯酸酯(acrylate)單體及矽大分子單體進行共聚合後使丙烯酸(acrylic acid)單體進行加成反應而製備的;其中,該塗敷組合物中,相對於包含丙烯醯基(acryloyl)官能團的該紫外線(UV)固化型樹脂100重量份,包含1重量份~15重量份的異氰酸酯(isocyanate)類化合物、1重量份~15重量份的光引發劑、0.1重量份~2重量份的抗氧化劑及200重量份~700重量份的溶劑。
  2. 根據申請專利範圍第1項所述的塗敷組合物,其特徵在於,包含環氧官能團的該丙烯酸酯(acrylate)類單體為選自包含丙烯酸縮水甘油酯(glycidyl acrylate)、甲基丙烯酸縮水甘油酯(glycidyl methacrylate)、α-乙基丙烯酸縮水甘油酯(glycidyl-α-ethyl acrylate)、α-N-丙基丙烯酸縮水甘油酯(glycidyl-α-N-propylacrylate)、α-丁基丙烯酸縮水甘油酯(glycidyl-α-butyl acrylate)、3,4-環氧丁基丙烯酸甲酯(3,4-epoxybutyl methacrylate)、3,4-環氧丁基丙烯酸酯(3,4-epoxybutyl acrylate)、6,7-環氧庚基甲基丙烯酸酯(6,7-epoxyheptyl methacrylate)、6,7-環氧庚基丙烯酸酯(6,7-epoxyheptyl acrylate)、6,7-環氧庚基-α-丙烯酸乙酯(6,7-epoxyheptyl-α-ethylacrylate)的組中的某一種。
  3. 根據申請專利範圍第1項所述的塗敷組合物,其特徵在於,該矽大分子單體在以下[化學式1]中,R1及R2是相互獨立的碳原子數1~12的烷基(alkyl),R3及R4是相互獨立的碳原子數1~12的烷基(alkyl),Y是氫或碳原子數1~12的烷基(alkyl),n是60~300的整數。
  4. 根據申請專利範圍第1項所述的塗敷組合物,其特徵在於,該矽大分子單體的重均分子量為500~22000。
  5. 根據申請專利範圍第1項所述的塗敷組合物,其特徵在於,相對於包含環氧官能團的該丙烯酸酯單體100重量份,該矽大分子單體為0.1重量份~5重量份。
  6. 一種塗敷組合物的製備方法,其特徵在於,包括如下步驟:準備包含丙烯醯基(acryloyl)官能團的紫外線(UV)固化型樹脂的步驟;以及混合該紫外線(UV)固化型樹脂與異氰酸酯(isocyanate)類化合物、光引發劑、抗氧化劑及溶劑的步驟;其中,包含丙烯醯基(acryloyl)官能團的該紫外線(UV)固化型樹脂是對包含環氧官能團的丙烯酸酯(acrylate)單體及矽大分子單體進行共聚 合後使丙烯酸(acrylic acid)單體進行加成反應而製備的。
  7. 一種轉印薄片,其特徵在於,包括:基材膜;及塗敷層,其形成於該基材膜的單面,並含有申請專利範圍第1至5中任一項所述的塗敷組合物。
  8. 根據申請專利範圍第7項所述的轉印薄片,其特徵在於,更包括:離型層,其形成於該塗敷層與該基材膜之間;粘合層,其形成於該塗敷層上。
  9. 根據申請專利範圍第8項所述的轉印薄片,其特徵在於,該塗敷層與粘合層間,形成印刷層或蒸敷層中一種以上的層。
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US20150118454A1 (en) 2015-04-30
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KR101447775B1 (ko) 2014-10-06
JP6118402B2 (ja) 2017-04-19
EP2848663A1 (en) 2015-03-18
JP2015523423A (ja) 2015-08-13
CN104334659B (zh) 2017-03-01
EP2848663B1 (en) 2016-11-09
WO2013168871A1 (ko) 2013-11-14
EP2848663A4 (en) 2015-05-06
US9267055B2 (en) 2016-02-23
TW201345979A (zh) 2013-11-16

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