CN108603087A - 改善的压敏粘合剂组合物 - Google Patents

改善的压敏粘合剂组合物 Download PDF

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Publication number
CN108603087A
CN108603087A CN201780009324.3A CN201780009324A CN108603087A CN 108603087 A CN108603087 A CN 108603087A CN 201780009324 A CN201780009324 A CN 201780009324A CN 108603087 A CN108603087 A CN 108603087A
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CN
China
Prior art keywords
adhesive
adhesive composition
sensitive adhesive
adherend
pressure
Prior art date
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Pending
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CN201780009324.3A
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English (en)
Inventor
P·P·安东尼
J·T·巴图西亚克
C·J·罗瑟
B·S·福尼
J·M·博尔顿
N·C·库马尔
S·M·韦斯特
D·熊
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of CN108603087A publication Critical patent/CN108603087A/zh
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Abstract

本公开整体涉及粘合剂组合物、包含粘合剂组合物的粘合剂制品、制备所述粘合剂组合物和制品的方法,以及使用所述粘合剂组合物和制品的方法。本公开的粘合剂组合物包含由以下各项的反应制得的热塑性酚醛树脂:(1)烷基苯酚(例如丁基苯酚或辛基苯酚或壬基苯酚)和甲醛;或(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛;或(3)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙炔。本公开还整体涉及包含这些粘合剂组合物的粘合剂制品。本公开的发明人发现,此类粘合剂制品在各种条件(包括,例如,高湿度)中表现出对包括低VOC或不包括VOC、深层基础制剂、和/或包含底漆的制剂的建筑涂层的优异粘附性。

Description

改善的压敏粘合剂组合物
技术领域
本公开整体涉及粘合剂组合物、包含粘合剂组合物的粘合剂制品、制备粘合剂组合物和制品的方法、以及使用粘合剂组合物和制品的方法。
背景技术
Adhesive Strip产品是强力保持在多种表面(包括油漆、木材和瓷砖)上且干净移除—没有孔、痕或粘性残余物的粘合条的线条。一般来讲,这些产品包括设置在带材或其它背衬上的粘合剂组合物。这些产品通常具有粘结至用于多种应用的各种表面或基底的实用性。这些粘合剂产品被设计成将制品,诸如钩(以保持图片或衣物制品)或其它装饰性或实用元件,牢固地粘附至表面(粘附体),但当以低角度拉离建筑表面时干净地移除。干净移除方面使得在移除粘合剂制品后表面上不遗留发粘和/或难看的残余物。
另外,可将各种类型的掩蔽带材或其它带材施加至粘附体。此类带材通常用于掩蔽不应上漆的墙或建筑表面的区域。带材包括涂覆有压敏粘合剂的背衬。压敏粘合剂允许在不损害粘附体的情况下容易地移除掩蔽带。带材上所用的粘合剂的强度可根据预期用途而变化。
掩蔽带和Adhesive strip产品常规施加至其上的一个示例性粘附体是涂覆有建筑涂层(例如,油漆、清漆、污渍等)的壁。近年来,许多建筑涂层的制剂发生了变化,包括,在一些情况下,减少或消除挥发性有机化合物(VOC)并通过水基载体制备建筑涂层递送物。此类制剂通常包含较大量的非挥发性相容性增强化合物诸如表面活性剂以及可与颜料和水相缔合以保持制剂的分散稳定性、有助于干燥期间的聚结或两者的聚合物。此外,建筑涂层的最新时尚趋势已转向更饱和的颜色选用区,其继而需要较高的颜料含量以及因此更多的分散稳定剂作为制剂的一部分。其示例包括为更饱和的颜色配制的深层基础漆。另外,现代建筑涂层已发生改变,在一些情况下,以适应其中消除对单独底漆层的需要的制剂,诸如在一种涂层中的油漆和底漆(或“组合油漆/底漆”)的情况下。
由于这些最近的制剂变化,已发现上漆表面是高度复杂、可变且动态的组分混合物。在一些情况下,已发现表面活性剂、分散剂或其它添加剂在固化涂层内是移动的并且可“绽放(bloom)”至空气涂层界面。此外,在升高的相对湿度下,已观察到许多建筑涂层的表面极性增大并变得更异质。虽然不受理论的束缚,但据信极性和异质性的这种增大可归因于水吸附和伴随的分散剂/添加剂迁移。这些变化在具有增大浓度的移动表面活性剂以及其它亲水性和两亲性化合物的涂层中可更加严重。
发明内容
本公开的发明人力求改善可在建筑涂层上使用的粘合剂,所述建筑涂层包括例如,包括低VOC或不包括VOC的那些、深层基础制剂、包含底漆的制剂、可擦洗油漆等。本公开的发明人还力求产生可在建筑涂层上使用的掩蔽带和粘合剂制品,所述建筑涂层包括例如,包括低VOC或不包括VOC的那些、深层基础制剂、包含底漆的制剂等。
本公开的发明人发现,在一些实施方案中,在粘合剂中包括由(1)烷基苯酚(例如丁基苯酚或辛基苯酚)和甲醛的反应;或(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛的反应;或(3)烷基苯酚(例如丁基苯酚或辛基苯酚或壬基苯酚)和乙炔的反应制得的热塑性酚醛树酯导致对建筑涂层具有优异粘附性的粘合剂组合物–即使在高湿度下-所述建筑涂层具有低VOC或不含VOC、深层基础制剂、包含底漆的制剂等。在一些实施方案中,热塑性酚醛树脂为酚醛环氧树脂。一般来讲,酚醛环氧树脂为苯酚-甲醛树脂。一些实施方案具有小于1的甲醛与苯酚摩尔比。在一些实施方案中,使用酸催化剂诸如草酸、盐酸或磺酸来完成聚合。在一些实施方案中,苯酚单元通过亚甲基和/或醚基连接。
在一些实施方案中,压敏粘合剂组合物包含由(1)烷基苯酚(例如丁基苯酚或辛基苯酚或壬基苯酚)和甲醛的反应;或(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛的反应;或(3)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙炔的反应制得的热塑性酚醛树脂。
在一些实施方案中,压敏粘合剂包含丙烯酸、橡胶、天然橡胶、异戊二烯嵌段共聚物、丁二烯嵌段共聚物、以及它们的组合中的至少一种。
在一些实施方案中,异戊二烯嵌段共聚物为苯乙烯-异戊二烯-苯乙烯嵌段共聚物。
在一些实施方案中,丁二烯嵌段共聚物为苯乙烯-丁二烯-苯乙烯嵌段共聚物。
一些实施方案包括选自基本上由以下组成的列表的增粘剂:聚萜烯、松香酯、萜烯苯酚、烃树脂、以及它们的组合。
在一些实施方案中,热塑性酚醛树脂以介于约2重量%和约45重量%之间的量存在。
在一些实施方案中,烷基苯酚已用选自基本上由以下组成的列表的官能团改性:环氧树脂、松香、萜烯、丁二烯、以及它们的组合。
在一些实施方案中,粘合剂制品包括背衬和压敏粘合剂组合物。
在一些实施方案中,背衬是纸材或塑料。
在一些实施方案中,与不包括热塑性酚醛树脂的粘合剂制品相比,该粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂或包含底漆的制剂中的至少一个的建筑涂层。
在一些实施方案中,当在79℉和74%相对湿度下测量时,与不包含热塑性酚醛树脂的粘合剂制品相比,该粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂或包含底漆的制剂中的至少一个的建筑涂层。
在一些实施方案中,粘附体为上漆干墙、玻璃、不锈钢、塑料或它们的组合中的至少一个。
具体实施方式
将详细描述各种实施方案和实施方式。这些实施方案不应理解为以任何方式限制本专利申请的范围,并且在不脱离本发明的实质和范围的条件下,可做出更改和修改。此外,本文仅论述了一些最终用途,但本文未具体描述的最终用途包括在本专利申请的范围内。因此,本专利申请的范围应按权利要求书确定。
本公开整体涉及粘合剂组合物,所述粘合剂组合物包含由(1)烷基苯酚(例如丁基苯酚或辛基苯酚)和甲醛的反应;或(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛的反应;或(3)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙炔的反应制得的热塑性酚醛树脂。在一些实施方案中,热塑性酚醛树脂为酚醛环氧树脂。本公开还整体涉及包含该粘合剂组合物的粘合剂制品。本公开的发明人发现,此类粘合剂制品在各种条件(包括,例如,高湿度)中表现出对包括低VOC或不包括VOC、深层基础制剂、和/或包含底漆的制剂的建筑涂层的优异粘附性。
粘结剂组合物
本公开的粘合剂组合物包含由(1)烷基苯酚(例如丁基苯酚或辛基苯酚或壬基苯酚)和甲醛的反应;或(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛的反应;或(3)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙炔的反应制得的热塑性酚醛树脂。酸性催化剂和摩尔过量的苯酚是用于制备酚醛环氧树脂的条件。苯酚单元主要通过亚甲基和/或醚基连接。
在一些实施方案中,热塑性酚醛树脂为酚醛环氧树脂。一般来讲,酚醛环氧树脂为苯酚-甲醛树脂。一些实施方案具有小于1的甲醛与苯酚摩尔比。在一些实施方案中,使用酸催化剂诸如草酸、盐酸或磺酸来完成聚合。在一些实施方案中,苯酚单元通过亚甲基和/或醚基连接。
热塑性酚醛树脂可以介于约2重量%和约45重量%之间的量存在。在一些实施方案中,热塑性树脂以至少2重量%、至少5重量%、至少8重量%、至少10重量%、至少12重量%、至少15重量%、至少18重量%、至少20重量%、至少22重量%、至少25重量%、至少28重量%、至少30重量%、至少32重量%、至少35重量%、至少38重量%、或至少40重量%的量存在。在一些实施方案中,热塑性酚醛树脂以少于45重量%、少于42重量%、少于40重量%、少于38重量%、少于35重量%、少于33重量%、少于30重量%、少于28重量%、少于25重量%、少于22重量%、少于20重量%、少于18重量%、少于15重量%、少于12重量%、或少于10重量%的量存在。
在一些实施方案中,粘合剂组合物还包含天然橡胶、合成橡胶、SIS、SBS、SEBS、丙烯酸酯、聚氨酯、硅氧烷、硅氧烷嵌段共聚物、聚异戊二烯橡胶、EPDM、丁基橡胶以及它们的组合中的至少一种。
在一些实施方案中,粘合剂包括增粘剂。一些示例性增粘剂包括萜烯苯酚、聚萜烯、松香酯、如C5或C9的hydrovardbon树脂、以及它们的组合。
在本公开的一些实施方案中,粘合剂组合物是压敏粘合剂。可用的压敏粘合剂的一般性描述可在如下文献中找到:聚合物科学和工程百科全书(Encyclopedia of PolymerScience and Engineering),第13卷,威利国际科学出版社(美国纽约,1988年)(Wiley-Interscience Publishers(New York,1988))。可用的压敏粘合剂的附加描述可在如下文献中找到:聚合物科学和技术百科全书(Encyclopedia of Polymer Science andTechnology),第1卷,国际科学出版社(美国纽约,1964年)(Interscience Publishers(NewYork,1964))。
在一些实施方案中,粘合剂的粘附特性可在0N/dm至25N/dm的范围内。在一些实施方案中,粘合剂的粘附特性可在0.5N/dm至10N/dm的范围内。在一些实施方案中,粘合剂的粘附特性可在1N/dm至5N/dm的范围内。
粘合剂制品
可剥离粘合剂可包括具有期望特性的任何可剥离粘合剂。
在一些实施方案中,可剥离粘合剂为压敏粘合剂。可用的压敏粘合剂的一般性描述可在如下文献中找到:聚合物科学和工程百科全书(Encyclopedia of Polymer Scienceand Engineering),第13卷,威利国际科学出版社(美国纽约,1988年)(Wiley-Interscience Publishers(New York,1988))。可用的压敏粘合剂的附加描述可在如下文献中找到:聚合物科学和技术百科全书(Encyclopedia of Polymer Science andTechnology),第1卷,国际科学出版社(美国纽约,1964年)(Interscience Publishers(NewYork,1964))。可在压敏粘合剂中使用任何合适的组合物、材料或成分。示例性压敏粘合剂利用例如与一种或多种增粘树脂结合的一种或多种热塑性弹性体。
在一些实施方案中,可剥离粘合剂层可包含橡胶、硅氧烷或丙烯酸类粘合剂中的至少一者。在一些实施方案中,可剥离粘合剂层可包含压敏粘合剂(PSA)或环氧树脂粘合剂。在一些实施方案中,可剥离粘合剂可包含增粘橡胶粘合剂,诸如天然橡胶;烯烃;硅氧烷,诸如硅氧烷聚脲;合成橡胶粘合剂,诸如聚异戊二烯、聚丁二烯和苯乙烯-异戊二烯-苯乙烯、苯乙烯-乙烯-丁烯-苯乙烯和苯乙烯-丁二烯-苯乙烯嵌段共聚物以及其它合成弹性体;以及增粘的或未增粘的丙烯酸类粘合剂,诸如丙烯酸异辛酯和丙烯酸的共聚物,其能够通过辐射、溶解、悬浮或乳化技术聚合;聚氨酯;硅氧烷嵌段共聚物;以及上述的组合。粘合剂可以是例如任何以下专利申请中所述的粘合剂中的任一种,所有这些专利申请均以引用方式并入本文:PCT专利公布2015/035556、2015/035960以及US 2015/034104。
在一些实施方案中,粘合剂包括增粘剂。一些示例性增粘剂包含聚萜烯、萜烯苯酚、松香酯和/或松香酸中的至少一种。
在一些实施方案中,可剥离粘合剂是可被涂覆到背衬上的可流动粘合剂。在一些实施方案中,可剥离粘合剂是更固体的粘合剂,如例如徳国专利33 31 016中一般性描述的。
在一些实施方案中,粘合剂的粘附特性可在0N/dm至25N/dm的范围内。在一些实施方案中,粘合剂的粘附特性可在0.5N/dm至10N/dm的范围内。在一些实施方案中,粘合剂的粘附特性可在1N/dm至5N/dm的范围内。
在一些实施方案中,可剥离粘合剂可提供例如4-20磅每平方英寸的剪切力。
在一些实施方案中,粘合剂制品可从第二终端、第一侧或第二侧中的至少一个剥离。在一些实施方案中,粘合剂制品可从第二终端、第一侧或第二侧中的至少两个剥离。
在一些实施方案中,可剥离粘合剂受到调控以实现没有损伤或最小损伤的剥离。用于这样做的示例性方法和制品描述于例如美国专利6,835,452以及由专利受让人以下列案件号(matter number)提交的专利申请:77329US002、77513US002、以及77514US002。
在一些实施方案中,本公开的粘合剂制品可在不造成损伤的情况下从基底或表面移除。如本文所用,术语“不造成损伤”或“无损伤”等是指粘合剂制品可与基底分离而不造成油漆、涂层、树脂、覆盖物或下面的基底的可见损伤和/或遗留残余物。对基底的可见损伤可以是基底的任何层的例如刮擦、撕裂、分层、破碎、碎裂、绷皮等形式。可见损伤也可以是脱色、弱化、光泽度变化、雾度变化、或基底外观的其它变化。
可包含本文所述的粘合剂组合物的一些粘合剂制品包括具有相背对的第一主表面和第二主表面的背衬。粘合剂组合物涂覆在背衬的第一主表面和/或第二主表面中的一者或二者的至少一部分上。在一些实施方案中,背衬的第一主表面或第二主表面中的至少一个上的粘合剂的厚度为约1μm至约1mm。
背衬可由任何期望的材料制成。可用的背衬包括例如聚合物泡沫层、聚合物膜层以及它们的组合。
适用于本发明的各种实施方案的具体可拉伸剥离粘合条包括美国专利4,024,312(Korpman)中所述的具有弹性背衬的压敏粘合剂、美国专利5,516,581(Kreckel等人)和PCT申请WO 95/06691以及布利埃斯(Bries)等人(美国专利6,231,962)中所述的具有高度可延展且基本非弹性的背衬的压敏粘合剂、以及德国专利33 31 016中所述的固体弹性压敏粘合剂,所有这些专利均以引用方式全文并入本文。
适用于聚合物泡沫层或固体聚合物膜层的聚合物背衬材料的代表性示例包括:聚烯烃,例如聚乙烯,包括高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯,以及线性超低密度聚乙烯、聚丙烯和聚丁烯;乙烯基共聚物,例如聚氯乙烯(增塑的和未增塑的两者)和聚醋酸乙烯酯;烯烃共聚物,例如乙烯/甲基丙烯酸酯共聚物、乙烯/醋酸乙烯酯共聚物、丙烯腈-丁二烯-苯乙烯共聚物、和乙烯/丙烯共聚物;丙烯酸类聚合物和共聚物;以及它们的组合。也可使用任何塑性材料或者塑性材料和弹性体材料的混合物或共混物,诸如聚丙烯/聚乙烯、聚氨酯/聚烯烃、聚氨酯/聚碳酸酯、以及聚氨酯/聚酯。固体聚合物膜背衬优选地选自聚乙烯和聚丙烯膜,其中最优选的材料是未取向的线性低密度聚乙烯膜和超低密度聚乙烯膜。可用的线性低密度聚乙烯膜的示例可以商品名XMAX 161.1从亨斯迈包装(威斯康辛州奇珀瓦福尔斯)(Huntsman Packaging(Chippewa Falls,Wis.))商购获得。
可选择聚合物泡沫以优化带材的特性,诸如贴合性和回弹性,这在将带材粘附至具有表面不平度的表面(例如上漆墙板)时是有用的。可贴合且有回弹力的聚合物泡沫非常适于其中将粘合剂胶带粘附至具有表面不平度的表面的应用。典型的墙表面就属于这种情况。用于背衬的聚合物泡沫层的密度通常将为约2磅/立方英尺至约30磅/立方英尺(约32kg/m.sup.3至约481kg/m.sup.3),在其中将泡沫拉伸以实现脱粘的带材构造中尤其是这样。
聚烯烃泡沫是用于带材背衬的优选塑料聚合物泡沫层。聚合物泡沫层最优选为聚烯烃泡沫,其可以商品名Volextra.TM.和Volara.TM.购自积水美国公司的Voltek部门(马萨诸塞州劳伦斯)(Voltek,Division of Sekisui America Corporation(Lawrence,Mass.))。
在多层背衬中的仅一个聚合物膜或泡沫层旨在用于拉伸来实现脱粘的情况下,该层应表现出足够的物理特性,并且具有足够的厚度,以实现该目的。
聚合物膜可用于增加带材的载荷强度和断裂强度。膜特别适于涉及将平滑表面粘附在一起的应用。聚合物膜层优选地具有约0.4密耳至约10密耳,更优选地约0.4密耳至约6密耳的厚度。
背衬可包含弹性体材料。合适的弹性体背衬材料包含(例如)苯乙烯-丁二烯共聚物、聚氯丁二烯(即氯丁橡胶)、腈橡胶、丁基橡胶、聚硫橡胶、顺式-1,4-聚异戊二烯、乙烯-丙烯三元共聚物(例如EPDM橡胶)、硅橡胶、硅氧烷聚脲嵌段共聚物、聚氨酯橡胶、聚异丁烯、天然橡胶、丙烯酸酯橡胶、热塑性橡胶例如苯乙烯-丁二烯嵌段共聚物和苯乙烯-异戊二烯-苯乙烯嵌段共聚物、以及热塑性聚烯烃橡胶材料。
拉伸剥离压敏粘合带可以多种配置构造。例如,带材可包括背衬,其具有布置在叠堆中的若干不同层并且可包括弹性、塑性(例如聚合物膜)、泡沫或粘合剂材料以及它们的组合的交替层。背衬层可根据多种方法彼此粘结,所述方法包括例如粘合剂、层合或共挤出。拉伸剥离压敏粘合带可以是单涂覆的(即,至少一种压敏粘合剂组合物设置在背衬的一个表面上)或双涂覆的(即,背衬的两个相背对的表面包含粘合剂组合物)。压敏粘合带可包括设置在背衬的单个表面或背衬的多个表面上的多种不同的粘合剂组合物、相同或不同的粘合剂组合物的多个层、以及它们的组合。
可用的带材和背衬构造的示例描述于美国专利4,024,312(Korpman)、美国专利5,516,581(Kreckel等人)、美国专利6,001,471(Bries等人)和美国专利6,004,642(Langford)以及PCT国际公布WO 95/06691中并且并入本文。可用的带材和背衬构造的其它示例包括如PCT国际公布WO 98/21285所述的可分裂层背衬和如PCT国际公布WO 99/31193所述的可重新紧固层背衬,所有这些专利并入本文。
拉伸剥离压敏粘合带可包括非粘性突块,例如,如附图中所示,在移除过程中,使用者可抓握和牵拉该非粘性突块以拉伸粘合带,以将粘合带从其所附着的物体或基底移除。非粘性突块可为背衬材料的延伸部或拉伸剥离压敏粘合剂的防粘部分。可使用任何已知的产生非粘性区域的方法由粘性粘合剂基底形成非粘性突块,包括例如将防粘材料施加至粘合剂以使其不发粘。
拉伸剥离压敏粘合带还可包括设置在压敏粘合剂组合物的暴露表面上的一个或多个衬片,以保护粘合剂直到使用。合适的衬片的示例包括纸材,例如牛皮纸,或聚合物膜,例如聚乙烯、聚丙烯或聚酯。可将衬片的至少一个表面用隔离剂(诸如硅氧烷、含氟化合物或其它基于低表面能的剥离材料)处理以提供隔离衬片。合适的隔离衬片和用于处理衬片的方法在例如美国专利4,472,480、4,980,443和4,736,048中有所描述并且并入本文。优选的隔离衬片为氟代烷基硅氧烷多涂覆的纸材。这些隔离衬片可印刷有线条、商标标记或其他信息。
一些实施方案还包括安装装置。示例性安装装置包括例如钩、夹具和套环。以下安装装置中的任一种可与本公开的粘合剂制品一起使用:申请案件号77486US002(转让给本受让人)、美国专利5,409,189(Luhmann)、美国专利5,989,708(Kreckel)、8,708,305(McGreevy)、美国专利5,507,464(Hamerski等人)、美国专利5,967,474(doCanto等人)、美国专利6,082,686(Schumann)、美国专利6,131,864(Schumann)、美国专利6,811,126(Johansson等人)、美国专利D665,653以及美国专利7,028,958(Pitzen等人),所有这些专利全文以引用方式并入本文。
本公开的一些粘合剂制品具有优异的剪切强度。如根据ASTM D3654测量的,本公开的一些实施方案具有大于1800分钟的剪切强度。如根据ASTM D3654测量的,本公开的一些实施方案具有大于10,000分钟的剪切强度。
在一些实施方案中,粘合剂制品具有介于约0.1密耳和约10密耳之间的厚度。在一些实施方案中,厚度大于0.1密耳、大于1密耳、大于2密耳、大于3密耳、大于4密耳、大于5密耳、大于6密耳、或大于7密耳。在一些实施方案中,厚度小于10密耳、小于9密耳、小于8密耳、小于7密耳、小于6密耳、小于5密耳、小于4密耳、小于3密耳、或小于2密耳。
在一些实施方案中,剥离力在沿着粘合剂制品的所有点处低于30盎斯/英寸。
与不包括热塑性酚醛树脂的粘合剂制品相比,本公开的一些粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂或包含底漆的制剂中的至少一个的建筑涂层。在高湿度条件下,与不包括热塑性酚醛树脂的粘合剂制品相比,本公开的一些粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂、可擦洗油漆或包含底漆的制剂中的至少一个的建筑涂层。在一些实施方案中,高湿度条件具有79℃的温度和74%的相对湿度。
在一些实施方案中,粘附体为上漆干墙、玻璃、不锈钢、聚乙烯、干墙、塑料、聚丙烯、聚苯乙烯、上漆木材、上漆干墙、上漆的人造木材装饰、以及它们的组合中的至少一个。
使用方法
本公开的粘合剂制品可用于各种方式。在一些实施方案中,将背衬施加、附接到粘附体上或按压到粘附体中。以此方式,背衬接触粘附体。在存在隔离衬片的情况下,在将背衬施加、附接到粘附体上或按压到粘附体中之前移除隔离衬片。在一些实施方案中,在将背衬施加、附接到粘附体上或按压到粘附体中之前,用醇擦拭粘附体的至少一部分。
在一些实施方案中,为了从粘附体上移除背衬和/或粘合剂制品,将背衬和/或粘合剂制品的至少一部分从粘附体剥离。在其中存在突块的实施方案中,使用者可握持突块并使用它将背衬与粘附体剥离。
在一些实施方案中,为了从粘附体上移除背衬和/或粘合剂制品,将背衬和/或粘合剂制品的至少一部分从粘附体拉伸剥离。在其中存在突块的实施方案中,使用者可握持突块并使用它将背衬与粘附体拉伸剥离。
制备方法
可使用各种方法来制造本公开的粘合剂组合物。一种示例性方法如下。用于形成反应器皿或容器的封装材料优选地由与粘合剂组合物组合时基本上不会不利地影响期望的粘合剂特征的材料制成。与仅由粘合剂组合物制备的热熔融涂覆粘合剂相比,由粘合剂组合物和封装材料的混合物制备的热熔融涂覆粘合剂可具有改善的粘合剂特性。
在本公开的一个实施方案中,反应混合物基本上被封装材料包裹;在本公开的另一个实施方案中,反应混合物完全被封装材料包裹。在该实施方案中,反应混合物旨在被封装材料完全包裹,但是生产中的随机变化可能产生偶然的封装预粘合剂,其中反应混合物未被封装材料完全包裹。在其他实施方案中,反应混合物设置在一对片材之间。
封装材料中的至少一种组分(更优选整个封装材料)优选地在等于或低于粘合剂的加工温度(即粘合剂组合物开始流动的玻璃化转变温度Tg)下熔化。封装材料的熔点优选为200℃或更低,优选为170℃或更低。在一个优选的实施方案中,熔点在90℃至150℃的范围。
封装材料可为柔性热塑性聚合物膜,更优选地为无支撑的非层合体热塑性聚合物膜。封装材料优选地选自乙烯-丙烯酸、乙烯-乙酸乙烯酯、聚丙烯、聚乙烯、聚丁二烯或离聚物膜。在目前优选的实施方案中,封装材料为乙烯-丙烯酸膜或乙烯-乙酸乙烯酯膜。特别合适的聚合物膜包括由明尼苏达州圣保罗的3M公司(3M Company(St.Paul,MN))生产的可热密封的线性低密度聚乙烯(LLDPE)膜。
在实践本公开的一些实施方案时,可使用厚度在约0.01mm至约0.25mm范围内的膜。厚度优选在约0.025mm至约0.127mm的范围内,以获得这样的膜:该膜在加工过程中具有良好的强度,同时它很薄,足以迅速地进行热密封并使所用的膜材料的量最少。
封装材料的量取决于材料的类型和所需的最终特性。封装材料的量通常在反应混合物和封装材料的总重量的约0.5%至约20%的范围内。优选地,封装材料的量介于2重量%和15重量%之间,并且更优选地介于3重量%和5重量%之间。
合适的封装材料可包含增塑剂、稳定剂、染料、香料、填料、增滑剂、防粘连剂、阻燃剂、抗静电剂、微波感受体、导热颗粒、导电颗粒和/或其他材料,以提高膜的柔韧性、可操纵性、可视性或其他有用特性,只要它们不会不利地影响粘合剂的所期望性质。
封装材料应该适用于所使用的聚合方法。例如,对于光聚合,有必要使用在进行聚合所需的波长下充分对紫外线辐射透明的膜材料。
本公开还提供了用于制备封装的粘弹性粘合剂组合物的方法,其中封装材料在聚合之后保留(并因此成为最终产品的一部分),即“I型组合物”,或者在聚合之后且后续加工之前被移除,即“II型组合物”。下文将进一步单独讨论这两类组合物。将特别参照热熔融粘合剂组合物对这两类产物进行描述。然而,下文描述的原理同样适用于其它类型的粘弹性组合物,包括压敏粘合剂、一般的粘合剂、可热熔融加工的密封剂、减振材料和用于医疗应用的粘弹性凝胶。
本公开提供了用于制备封装的、热塑性或热固性热熔融粘合剂组合物的方法。对于I型组合物,选择封装材料使得在热熔融粘合剂组合物和封装材料加热到封装材料的至少一种组分的熔融温度之上并混合到一起以形成可流动的、可涂覆的熔体时,封装材料基本上对热熔融粘合剂组合物的所期望的粘合剂特性没有不利影响。
本公开还提供了制备封装的、热塑性或热固性热熔融粘合剂的两个或更多个封装件的方法。在该方法中,提供反应混合物的两个或更多个部分,并且每个部分被封装材料完全包裹。然后如上所述(共)聚合这些部分。
在一个优选的实施方案中,反应混合物被封装材料完全包裹。优选地,0.1g至5000g的反应混合物被封装材料完全包裹。在另一个优选的实施方案中,1g至1,000g的反应混合物被封装材料完全包裹。
在本公开的又一个实施方案中,反应混合物基本上被封装材料包裹。在另一个实施方案中,反应混合物设置在一对基本上平行的两片封装材料片之间。
在II型组合物中,在聚合后将封装材料移除,使得任何进一步的加工(例如,粘合剂的熔融、涂覆或简单施用)仅涉及粘合剂。上述在I型组合物的情况下的粘合剂和反应混合物同样适用于II型组合物,同样还有用于制备粘合剂的聚合方法和条件。
结合I型组合物所述的封装材料也适用。然而,由于在任何聚合后加工之前要先将封装材料移除,因此封装材料的选取不限于这样的材料,该材料当熔融在一起时将基本上不会影响最终产品的粘合剂特性。因而,可使用多种封装材料,并且优选的是允许从粘合剂上轻易移除的材料。
为了增强将粘合剂从封装材料上移除的能力,封装材料可设置有剥离材料。其中聚合后加工之前移除封装材料的应用的示例包括湿固化密封剂组合物。这些粘合剂组合物将优选地以密封小袋的形式制备,该密封小袋被剥离以允许施用密封剂组合物。其他示例包括光学透明的粘合剂。
在本公开的一个实施方案的实践中,在液体成型-填充-密封机上将两种长度的热塑性膜的底部和每侧边缘热密封在一起,以形成末端开口的小袋。将反应混合物通过软管泵送以填充小袋,然后将小袋在顶部上热密封以完全包裹该粘合剂组合物。
优选地,成型-填充-密封机配备有脉冲密封器,以在小袋上形成顶部密封和底部密封。这种密封器具有一套或两套钳口,该钳口在密封前夹住小袋闭口。然后加热密封线以实现密封,并且在释放钳口之前冷却密封。密封温度通常在用于形成小袋的膜的软化点以上并在其熔点以下。
在密封过程中,希望在密封前将绝大多数空气驱出小袋。只要氧气的量不足以基本上干扰聚合过程,少量空气为可耐受的。为了便于处理,希望在用组合物填充小袋后立即将小袋密封,尽管没有必要在所有情况下都立即密封。在某些情况下,反应混合物可改变封装材料,并希望在填充后约一分钟内、更优选地在30秒内、并且最优选地在15秒内横向密封小袋。
如果反应混合物降低封装材料的强度,则优选的是在由封装材料包裹反应混合物后尽可能快地聚合组合物。对于(甲基)丙烯酸酯单体与乙烯丙烯酸、乙烯-乙酸乙烯酯或离聚物膜的组合,优选在密封小袋约24小时内使组合物聚合。
或者,单个长度的膜可以纵向折叠并在一个边缘上密封,填充反应混合物并密封。在另一个实施方案中,可将单一长度的膜经由成形套环拉出,并且密封形成管子,用组合物填充,然后密封。另一个实施方案可在市售的液体成型-填充-密封机上进行。此类机器的一个来源是鹰公司(Eagle Corp.)的封装机械部。可以预期,密封件可以以多种不同构造中的任何一种来实现,以在膜的长度的横向和纵向形成多个小袋。
例如,除了在侧边上进行密封之外,还可在各长度的膜的中心的纵向上形成密封,以使得横向密封时形成两个填充小袋。各小袋可通过横向密封和/或纵向密封而相互连接到一起,或者它们可被切割成单独的小袋或小袋串。各小袋可分别含有相同或不同的组合物。
然后可以通过任何上述方法聚合该反应混合物以在聚合物小袋内形成粘合剂组合物。聚合物小袋内的粘合剂组合物可用于阻尼振动。或者,粘合剂组合物本身可以用于阻尼振动。
在本公开的另一个实施方案中,反应混合物涂覆到载体网上,然后用片材料覆盖,并用透射的能量进行聚合,其中载体网、片材料或者两者都可用粘合剂进行热熔融涂覆。如果载体网和片材料二者是可热熔融涂覆的,则所得复合物可被直接送入热熔融涂布机中,或切割成更小的带或片然后送至热熔融涂布机中。如果载体网或片材料中仅有一者是可与粘合剂一起热熔融涂覆的,则在热熔融涂覆粘合剂之前将不可涂覆的实体移除。为了在移除不可涂覆的实体之后有利于进行处理,经聚合的粘合剂可自身折叠,使得可涂覆的实体基本上包裹经涂覆的粘合剂的主表面。然后,可将粘合剂网送入热熔融涂布机中,或者可将其切割成更小的带或片再进行热熔融涂覆。
如果载体网或片材料中任一者不能与粘合剂一起涂覆(例如,如就下文所述的II型组合物而言),如果需要,应当进行处理,使得粘合剂可以从其上容易地被移除。这种处理包括有机硅剥离涂层法处理、聚氟聚醚涂层法处理、以及聚含氟乙烯涂层(诸如TeflonTM)法处理。
载体网应提供足够的强度,以在聚合期间支撑经涂覆的反应混合物,或者其可以在聚合期间由台板支撑。载体纤维网可以是环形传送带,或者它可以是柔性材料,该柔性材料可以与粘合剂一起绕成卷;载体纤维网本身是片材料。环形传送带可以由以下材料制成:硅氧烷弹性体;聚合物膜,诸如由聚氟乙烯、聚酯、尼龙、聚碳酸酯等制成的那些膜;金属,诸如不锈钢;橡胶;玻璃纤维等等。可用的柔性材料包括纸材和聚合物膜,诸如由聚酯、尼龙、聚碳酸酯、聚烯烃、乙烯-丙烯酸、乙烯-乙酸乙烯酯、离聚物等制成的那些。可涂覆的柔性材料包括聚烯烃(诸如聚丙烯、聚乙烯和聚丁二烯);乙烯-丙烯酸;乙烯-乙酸乙烯酯;以及离聚物。
同样,片材料可由前述柔性材料以及由非柔性板制成,非柔性板由玻璃、聚合物或金属制成并可任选地涂覆有剥离材料。如果反应混合物随后进行光聚合,则载体网、片材料或两者应充分透过光化辐射以实现此光聚合。
优选地,封装材料基本上不会不利地影响封装材料和由反应混合物的聚合产生的粘合剂的热熔融涂覆的混合物的粘合剂特性,并且粘合剂和封装材料的热熔融涂覆的混合物优选具有当在25℃和1弧度/秒的扭转剪切下测量时的介于约104达因/cm2和约108达因/cm2之间的储能模量。
如下实施例描述了粘合剂制品的各种实施方案的一些示例性构造,以及制备本申请中所述的粘合剂制品的方法。如下实施例描述了一些示例性构造以及在本申请的范围内构造各种实施方案的方法。如下实施例旨在为示例性的,但不旨在限制本申请的范围。
实施例
实施例1-9描述了其中热塑性酚醛树脂与丙烯酸类聚合物配混的实验。更具体地讲,下文命名为“丙烯酸类聚合物A”的材料通过聚合以下单体制备:98.25重量份的丙烯酸异辛酯(IOA),可从密苏里州圣路易斯(St.Louis,MO)的西格玛-奥德里奇(Sigma-Aldrich)商购获得;1.75重量份的丙烯酸,可从西格玛-奥德里奇商购获得;0.25重量份的2,2-二甲氧基-1,2-二苯乙-1-酮光引发剂,可作为IRGACURE 651从瑞士巴塞尔(Basel,CH)的汽巴特殊化学品公司(Ciba Specialty Chemicals)商购获得;0.015重量份的异辛基硫基乙醇酸酯(-巯基乙酸酯)(IOTG),可从特拉华州马尔沙特(Marschacht,DE)的Bruno BockChemische Fabrik股份有限公司商购获得;以及0.4重量份的抗氧化剂,十八烷基-3-(3,5-二叔丁基-4-羟基苯基)-丙酸酯,可作为IRGANOX 1076从汽巴特殊化学品公司商购获得。
丙烯酸类聚合物A在封装材料中制备,通常如美国专利5,804,610,“制备封装的粘弹性组合物的方法(Methods of Making Packaged Viscoelastic Compositions)”中所论述的,该专利如同重写一样据此以引用方式并入。然后将这些聚合物材料的包装与如下表1中所呈现的成分一起放置到配混挤出机中,该配混挤出机进料狭槽挤出模头,两者均为常规类型。挤出机在300℉-325℉(149℃-163℃)的温度范围下操作以挤出涂层。将压力和狭槽高度参数设定成递送37g/m2的涂层重量,并且将涂层挤出到纸材背衬上,具体地讲,TARTAN 5142Utility Masking Tape(可从明尼苏达州圣保罗的3M公司(3M Company,St.Paul,MN)商购获得)上所用的背衬。然后使用电子束发生器(可从英国赫尔(Hull,UK)的金斯敦(Kingston)的科密集团(Comet Group)商购获得)在115kV下以3.0毫拉德的强度将经涂覆的背衬暴露于电子束辐射,从而在背衬上形成精整的压敏粘合剂。
表1:
实施例1 重量%
丙烯酸类聚合物A 74.63%
Sylvalite RE 100L 22.39%
Saret 519HPD 2.24%
Irganox 1010 0.75%
总计 100.00%
实施例3 重量%
丙烯酸类聚合物A 74.63%
Elaztobond(E)6000 22.39%
Saret 519HPD 2.24%
Irganox 1010 0.75%
总计 100.00%
实施例4 重量%
丙烯酸类聚合物A 74.63%
SP1077 22.39%
Saret 519HPD 2.24%
Irganox 1010 0.75%
总计 100.00%
实施例5 重量%
丙烯酸类聚合物A 74.63%
HRJ 4047 22.39%
Saret 519HPD 2.24%
Irganox 1010 0.75%
总计 100.00%
实施例6 重量%
丙烯酸类聚合物A 79.37%
HRJ 4047 17.46%
Saret 519HPD 2.38%
Irganox 1010 0.79%
总计 100.00%
实施例7 重量%
丙烯酸类聚合物A 86.21%
HRJ-4047 10.34%
Saret 519HPD 2.59%
Irganox 1010 0.86%
总计 100.00%
实施例8 重量%
丙烯酸类聚合物A 84.03%
HRJ-4047 12.61%
Saret 519HPD 2.52%
Irganox 1010 0.84%
总计 100.00%
比较例C-1 重量%
丙烯酸类聚合物A 96.14%
Saret 519HPD 2.89%
Irganox 1010 0.97%
总计 100.00%
比较例C-1类似于实施例5,不同的是省略辛基-酚醛树脂,以确定与实施例5-7相比其存在的影响。
该表中提到的其它成分是:
ELAZTOBOND T6000-改性的苯酚甲醛树脂,可从纽约斯克内克塔迪(Schenectady,NY)的SI集团有限公司(SI Group,Inc.)商购获得。
SP1077-改性的辛基-酚醛树脂,软化点为92℃至101℃,可从SI集团有限公司商购获得。
HRJ 4047–辛基-酚醛树脂(SP 92-101℃),可从SI集团有限公司商购获得。
HRJ-2765–辛基-酚醛树脂(SP 90-100℃),可从SI集团有限公司商购获得。
SYLVALITE RE 100L–松香酯增粘剂(SP 96-102℃),可从佛罗里达州杰克逊维尔(Jacksonville,FL)的Arizona Chemical公司商购获得。
SYLVAREZ TP 96–低软化点萜烯酚醛树脂,可从Arizona Chemical商购获得。
SARET 519HPD–丙烯酸类交联助剂,可从宾夕法尼亚州埃克斯顿(Exton,PA.)的沙多玛(Sartomer)公司商购获得。
IRGANOX 1010–主要酚抗氧化剂稳定剂,可从德国路德维希港(Ludwigshafen,DE)的巴斯夫公司(BASF)商购获得。
进行实验以确定在组合物中包含辛基-酚醛树脂的影响。更具体地讲,将比较例C-1与实施例5、6和7在粘附到若干表面和在若干条件下时进行比较。这些结果示出于表2。
表2
PROMAR是指可从俄亥俄州克利夫兰(Cleveland,OH)的薛文-威廉公司(Sherwin-Williams)商购获得的PROMAR 200 Zero VOC内用漆。
该实验表明,辛基-酚醛树脂的添加也大大地增加了测试带材对困难粘附体的粘附性,即使是在升高的温度和湿度的情况下。
实施例10-17描述了其中热塑性酚醛树脂与天然橡胶配混的实验。更具体地讲,将可作为CV60从美国的RCMA日用品集团(RCMA Commodities Group)商购获得的天然橡胶在可从德国杜伊斯堡(Duisburg,DE)的布拉本德公司(Brabender)商购获得的恒温控制的布拉本德凸轮磨碎机中在150℃且在60r.p.m.下磨碎6分钟。
然后将磨碎的橡胶与如下表3中所呈现的成分一起放置到配混挤出机中,该配混挤出机进料狭槽挤出模头,两者均为常规类型。挤出机在350℉-375℉(177℃-191℃)的温度范围下操作以挤出涂层。将压力和狭槽高度参数设定成递送37g/m2的涂层重量,并且将涂层挤出到纸材背衬上,具体地讲,388N Tape(可从明尼苏达州圣保罗的3M公司商购获得)上所用的纸材背衬。然后使用电子束发生器(可从英国赫尔的金斯敦的科密集团商购获得)在115kV下以3.0毫拉德的强度将经涂覆的背衬暴露于电子束辐射,从而在背衬上形成精整的压敏粘合剂。
表3:
实施例10 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Escorez 1304 0.00%
Elaztobond T6000 43.96%
Irganox 1010 1.10%
总计 100.00%
实施例11 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Escorez 1304 21.98%
Elaztobond T6000 21.98%
Irganox 1010 1.10%
总计 100.00%
实施例12 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Escorez 1304 0.00%
SP-1077 43.96%
Irganox 1010 1.10%
总计 100.00%
实施例13 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Escorez 1304 21.98%
SP1077 21.98%
Irganox 1010 1.10%
总计 100.00%
实施例14 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Escorez 1304 0.00%
HRJ4047 43.96%
Irganox 1010 1.10%
总计 100.00%
实施例16 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Qunitone K100 32.97%
HRJ4047 10.99%
Irganox 1010 1.10%
总计 100.00%
实施例17 重量%
天然橡胶 38.46%
Kraton D1340 16.48%
Qunitone K100 43.96%
Irganox 1010 1.10%
总计 100.00%
第一次在该表中提到的其它成分是:
Kraton D1340–可从Arizona Chemical公司商购获得的SBS嵌段共聚物。
Escorez 1304–可从得克萨斯州欧文(Irving,TX)的埃克森美孚公司(ExxonMobil)商购获得的增粘树脂。
Qunitone K100-可从肯塔基州路易维尔(Louisville,KY)的吉翁化学株式会社(Zeon Chemicals)商购获得的脂族烃树脂。
进行实验以确定在天然橡胶组合物中包含辛基-酚醛树脂的影响,并且还了解辛基-酚醛树脂与其它更常规的脂族增粘树脂的共混物的影响。更具体地讲,将比较例C-2与实施例11、13、14和15在粘附到若干表面和在若干条件下时进行比较。比较例C-2为可商购获得的掩蔽带,具体地为来自3M公司的SCOTCH General Purpose Masking Tape 2020。这些结果示出于表4中。
表4
PROMAR是指可从薛文-威廉公司商购获得的PROMAR 200 Zero VOC内用漆。
该实验表明,一些部分的脂族增粘剂(例如C5树脂)的添加可与酚醛树脂协同作用,以进一步增加测试带材对困难粘附体的粘附性,即使是在升高的温度和湿度下。
实施例18和实施例19描述了其中将热塑性酚醛树脂与合成橡胶(具体地讲是聚(苯乙烯-丁二烯-苯乙烯)(SBS)和聚(苯乙烯-异戊二烯-苯乙烯)(SIS)嵌段共聚物)配混的实验。
将合成橡胶与如下表5中所呈现的成分一起放置到配混挤出机中,该配混挤出机进料狭槽挤出模头,两者均为常规类型。挤出机在350℉-375℉(177℃-191℃)的温度范围下操作以挤出涂层。将压力和狭槽高度参数设定成递送37g/m2的涂层重量,并且将涂层挤出到纸材背衬上,具体地讲,TARTAN 5142Utility Masking Tape(可从3M公司商购获得)上所用的纸材背衬。然后使用电子束发生器(可从科密集团商购获得)在115kV下以3.0毫拉德的强度将经涂覆的背衬暴露于电子束辐射,从而在背衬上形成精整的压敏粘合剂。
表5:
实施例18 重量%
Kraton D1102(SBS) 58.31%
HRJ-4047 11.66%
Wingtack 86 29.15%
Irganox 1726 0.87%
总计 100.00%
第一次在该表中提到的其它成分是:
Kraton D1102(SBS)–基于苯乙烯和丁二烯的完全线型的三嵌段共聚物,聚苯乙烯含量为28%,可从德克萨斯州休斯顿(Houston,TX)的科腾高性能聚合物公司(KratonPerformance Polymers)商购获得。
Kraton D1161(SIS)–基于苯乙烯和异戊二烯的完全线型的三嵌段共聚物,聚苯乙烯含量为15%,可从科腾高性能聚合物公司商购获得。
Wingtack 86–芳族改性的C-5烃树脂,可从宾夕法尼亚州埃克斯顿的克雷威利美国公司(Cray Valley USA,Exton,PA)商购获得。
Irganox 1726–多官能酚抗氧化剂,含有4,6-双(十二烷基硫代甲基)-邻甲酚,可从巴斯夫公司商购获得。
Escorez 2203–脂族和芳族烃,可从埃克森美孚公司商购获得。
对由端值限定的所有数值范围的表述旨在包括归入该范围内的所有数字(即,1至10的范围包括例如1、1.5、3.33、和10)。
说明书和权利要求书中的术语第一、第二、第三等用于区分相似元件,并且不一定用于描述顺序或时间顺序。应当理解,如此使用的术语在适当的情况下是可互换的,并且本文描述的本发明的实施方案能够以不同于本文所述或所示的其它顺序操作。
此外,说明书和权利要求书中的术语顶部、底部、之上、之下等用于描述的目的并且不一定用于描述相对位置。应当理解,如此使用的术语在适当的情况下是可互换的,并且本文描述的本发明的实施方案能够以不同于本文所述或所示的其它取向操作。
本文所提及的所有参考文献借此全文以引用方式并入。
本领域中的技术人员将会知道,可在不脱离本公开基本原理的前提下对上述实施方案和具体实施的细节做出许多改变。此外,在不脱离本发明的实质和范围的前提下,对本发明的各种修改和更改对本领域技术人员将是显而易见的。因此,本申请的范围应当仅由以下权利要求书以及其等同物所确定。

Claims (12)

1.一种压敏粘合剂组合物,其包含:
由以下各项的反应制得的热塑性酚醛树脂:
(1)烷基苯酚(例如丁基苯酚或辛基苯酚或壬基苯酚)和甲醛的反应;或
(2)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙醛的反应;或
(3)烷基苯酚(例如丁基苯酚或辛基苯酚)和乙炔的反应。
2.根据权利要求1所述的压敏粘合剂组合物,其还包含:
丙烯酸、橡胶、天然橡胶、异戊二烯嵌段共聚物、丁二烯嵌段共聚物、以及它们的组合中的至少一种。
3.根据权利要求2所述的压敏粘合剂组合物,其中所述异戊二烯嵌段共聚物为苯乙烯-异戊二烯-苯乙烯嵌段共聚物。
4.根据权利要求2所述的压敏粘合剂组合物,其中所述丁二烯嵌段共聚物为苯乙烯-丁二烯-苯乙烯嵌段共聚物。
5.根据前述权利要求中任一项所述的压敏粘合剂组合物,其还包含:
增粘剂,所述增粘剂选自基本上由以下组成的列表:聚萜烯、松香酯、萜烯苯酚、烃树脂、以及它们的组合。
6.根据前述权利要求中任一项所述的压敏粘合剂组合物,其中所述热塑性酚醛树脂以介于约2重量%和约45重量%之间的量存在。
7.根据前述权利要求中任一项所述的压敏粘合剂组合物,其中所述烷基苯酚已用选自基本上由以下组成的列表的官能团改性:环氧树脂、松香、萜烯、丁二烯、以及它们的组合。
8.一种粘合剂制品,其包括:
背衬;以及
根据权利要求1-7中任一项所述的压敏粘合剂组合物。
9.根据权利要求9所述的粘合剂制品,其中所述背衬为纸材或塑料。
10.根据权利要求8或9所述的粘合剂制品,其中与不包含所述热塑性酚醛树脂的粘合剂制品相比,所述粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂或包含底漆的制剂中的至少一个的建筑涂层。
11.根据权利要求8-10中任一项所述的粘合剂制品,其中当在79℉和74%相对湿度下测量时,与不包含所述热塑性酚醛树脂的粘合剂制品相比,所述粘合剂制品表现出改善的对粘附体的粘附性,所述粘附体包括具有低VOC或不含VOC、深层基础制剂或包含底漆的制剂中的至少一个的建筑涂层。
12.根据权利要求10或11中任一项所述的粘合剂制品,其中所述粘附体为上漆干墙、玻璃、不锈钢、塑料、或它们的组合中的至少一个。
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