CN106903969A - 用于形成包含包括胺引发的多元醇的双组分无溶剂胶粘剂组合物的层压体的方法 - Google Patents

用于形成包含包括胺引发的多元醇的双组分无溶剂胶粘剂组合物的层压体的方法 Download PDF

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Publication number
CN106903969A
CN106903969A CN201710165096.0A CN201710165096A CN106903969A CN 106903969 A CN106903969 A CN 106903969A CN 201710165096 A CN201710165096 A CN 201710165096A CN 106903969 A CN106903969 A CN 106903969A
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CN
China
Prior art keywords
substrate
component
laminar structure
adhesive
polyalcohol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710165096.0A
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English (en)
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CN106903969B (zh
Inventor
T·施密特
D·芬奇
M·弗拉斯科尼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Global Technologies LLC
Rohm and Haas Co
Original Assignee
Dow Global Technologies LLC
Rohm and Haas Co
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Publication date
Application filed by Dow Global Technologies LLC, Rohm and Haas Co filed Critical Dow Global Technologies LLC
Priority to TW106113158A priority Critical patent/TWI822656B/zh
Priority to MX2018013656A priority patent/MX2018013656A/es
Priority to US16/300,561 priority patent/US11014334B2/en
Priority to BR112018072843-8A priority patent/BR112018072843B1/pt
Priority to JP2018556281A priority patent/JP2019522063A/ja
Priority to RU2018141189A priority patent/RU2742989C2/ru
Priority to EP17723560.3A priority patent/EP3455316B1/en
Priority to PCT/US2017/029287 priority patent/WO2017196528A1/en
Publication of CN106903969A publication Critical patent/CN106903969A/zh
Priority to US17/202,680 priority patent/US20210197523A1/en
Application granted granted Critical
Publication of CN106903969B publication Critical patent/CN106903969B/zh
Priority to JP2022088900A priority patent/JP2022119938A/ja
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Abstract

本发明公开了用于形成包含双组分无溶剂聚氨酯胶粘剂组合物的层压结构的方法。配制所述胶粘剂组合物，使得在将基底合在一起形成所述层压结构之前，每个组分被独立地涂布到相应的基底。所述胶粘剂组合物是高反应性的，并且可以包含提供快速固化的胺引发的多元醇或催化剂。所述胺引发的多元醇包含2至12的官能度、5至1830的羟基值以及在40℃下500至20000mPa·s的粘度。所述催化剂可以是铋催化剂、锌催化剂、锆催化剂、锡催化剂和铝催化剂。此外，本发明公开了根据所述方法形成的层压体。

Description

用于形成包含包括胺引发的多元醇的双组分无溶剂胶粘剂组 合物的层压体的方法
技术领域
本发明涉及用于形成包含无溶剂胶粘剂组合物的层压结构的方法。更具体地，本发明涉及用于形成包含双组分无溶剂聚氨酯胶粘剂组合物的层压体的方法，配制所述胶粘剂组合物，使得在将基底合在一起形成层压结构之前，每个组分配置成独立地涂布到相应的基底。胶粘剂组合物可以包含胺引发的多元醇，从而提供快速的固化速度和改进的转化效率。在一些实施例中，胶粘剂组合物可以包含用于增强胶粘剂组合物的反应性的催化剂，诸如铋催化剂、锌催化剂、锆催化剂、锡催化剂和铝催化剂。
在一些实施例中，胶粘剂组合物的一种组分配置成均匀地涂布到第一基底的表面，而胶粘剂组合物的另一种组分配置成涂布到第二基底的表面。随后将第一基底和第二基底合在一起，从而使两种组分混合并反应，以在第一基底和第二基底之间形成胶粘剂。以这种方式，然后可以固化胶粘剂，从而粘合第一基底和第二基底。
背景技术
胶粘剂组合物适用于各种各样的目的。举例来说，胶粘剂组合物用于将诸如聚乙烯、聚丙烯、聚酯、聚酰胺、金属、纸张或玻璃纸的基底粘合在一起以形成复合膜，即层压体。胶粘剂在不同的最终用途应用中的使用是众所周知的。例如，胶粘剂可用于制造包装工业中使用(特别是用于食品包装)的膜/膜和膜/箔层压体。在层压应用中使用的胶粘剂或“层压胶粘剂”通常可以分成三类：溶剂型、水基型和无溶剂型。胶粘剂的性能根据胶粘剂所应用的类别和应用而变化。
在不使用有机溶剂或水性载体的情况下，无溶剂层压胶粘剂可以以高达百分之一百的固体来涂布。因为涂布时不需要干燥胶粘剂中的有机溶剂或水，所以这些胶粘剂可以在高的线速下使用并且优选地在需要快速胶粘剂涂布的应用中使用。溶剂和水基层压胶粘剂受如下限制，即在胶粘剂的涂布后溶剂或水可被有效干燥并从层压结构中除去的速率。出于环境、健康和安全的原因，层压胶粘剂优选地是水性或无溶剂胶粘剂。
在无溶剂层压胶粘剂的类别中，有许多种类。一种特定的种类包括预混合的双组分聚氨酯型层压胶粘剂。通常，双组分聚氨酯型层压胶粘剂包括第一组分和第二组分；第一组分包含含异氰酸酯的预聚物和/或多异氰酸酯，第二组分包含多元醇。预聚物可以通过使过量的异氰酸酯与每分子含有两个或更多个羟基的聚醚和/或聚酯反应而获得。第二组分包含每分子中两个或更多个羟基官能化的聚醚和/或聚酯。将两种组分以预定比率组合或“预混合”，然后涂布在第一基底(“载体卷(carrier web)”)上。然后将第一基底与第二基底合在一起以形成层压结构。第一基底和第二基底必须在胶粘剂组合物的贮存期内合在一起，通常少于30分钟。
可以将另外的基底层添加到所述结构中，其中在每个连续的基底之间具有另外的胶粘剂组合物层。然后将胶粘剂在室温或升高的温度下固化，从而将基底粘合在一起。
层压结构的进一步加工取决于胶粘剂的固化速度。当层压基底之间的机械结合开始变得足以允许进一步的加工时，则指示了胶粘剂的固化速度，并且层压体符合适用的规定(例如，食品接触规定)。缓慢的固化速度导致较低的转化效率。与传统的含溶剂的胶粘剂相比，预混合的双组分无溶剂层压胶粘剂表现出弱的初始粘合和缓慢的固化速度。转化加工工业的总的趋势是更快固化的层压胶粘剂。更快的固化提高了转化加工器(converter)的运行效率。具体而言，将成品快速移出仓库提高了生产能力和用于处理最后时刻的订单(例如，零售商促销活动)的灵活性。为了提高运作效率，应当使用反应性比现有胶粘剂组合物高得多的胶粘剂组合物来形成层压体。然而，此类胶粘剂组合物将对传统的胶粘剂应用技术带来挑战。
因此，用于形成包含双组份无溶剂聚氨酯型层压胶粘剂组合物的层压体的更快速且更有效的方法是令人期望的。
发明内容
本发明公开了用于形成层压结构的方法。在一些实施例中，所述方法包括将异氰酸酯组分均匀地涂布到第一基底。异氰酸酯组分包括至少一种多异氰酸酯。所述方法还包括将多元醇组分均匀地涂布到第二基底。然后将第一基底和第二基底合在一起，从而混合异氰酸酯组分和多元醇组分并使其反应，以在第一基底和第二基底之间形成胶粘剂。然后将混合的胶粘剂组合物固化，从而粘合第一基底和第二基底。由于胶粘剂组合物成分的反应性，胶粘剂组合物能够在将第一基底和第二基底合在一起之后的10分钟内实现大于10000mPa·s的粘度。
根据所公开的方法制造的层压结构可以在层压之后仅仅两个小时内被割开，并在两天内送交给客户。使用现有的通用胶粘剂组合物制备的层压体从层压开始通常需要两到三天来割开，并且需要五至七天来送交。因此，根据所公开的方法大大改进了工艺效率。此外，与现有的通用胶粘剂的二十至三十分钟的贮存期相比，所公开的方法中使用的胶粘剂组合物的贮存期是无限的。这是因为所公开的胶粘剂组合物的贮存期与如下将论述的固化过程完全不挂钩。
因为所公开方法中使用的胶粘剂组合物配制成具有比现有胶粘剂组合物具有更高的反应性，所以它们并不能理想地适用于现有的胶粘剂涂布装置。这是因为两种组分反应非常快速，从而导致胶粘剂凝胶化并且不适合涂布到基底。为此，配制所公开方法中使用的胶粘剂组合物，使得异氰酸酯和多元醇组分分别涂布在两种不同的基底上，而不是将其预混合再涂布在载体卷上。
特别地，配制所公开的方法中使用的胶粘剂组合物，使得异氰酸酯组分可以均匀地涂布到第一基底的表面并且多元醇组分可以均匀地涂布到第二基底的表面。然后使第一基底的表面与第二基底的表面接触，以使两种组分混合并反应，从而形成层压体。然后固化该胶粘剂组合物。
附图说明
参考附图，其中：
图1是用于形成包含胶粘剂组合物的层压体的涂布装置的示意图；以及
图2是示出说明性实例和比较实例相对于时间的图表。
具体实施方式
所公开的方法中使用的双组分无溶剂胶粘剂组合物包含如上所述的异氰酸酯组分和多元醇组分。
异氰酸酯组分
异氰酸酯组分包含至少一种异氰酸酯。所述至少一种异氰酸酯可以选自由异氰酸酯预聚物、异氰酸酯单体、多异氰酸酯(例如，二聚物、三聚物等)以及它们的两种或更多种的组合组成的群组。如本文所使用，“多异氰酸酯”是含有两个或更多个异氰酸酯基团的任何化合物。异氰酸酯预聚物是包含至少一种异氰酸酯和至少一种多元醇的反应物的反应产物。如本文所使用，“异氰酸酯预聚物”可以是多异氰酸酯本身。
所述至少一种异氰酸酯包含1.5至10、或1.8至5、或2至3的官能度。如相对于异氰酸酯组分所使用的，“官能度”是指每分子的羟基反应位点的数目。具有异氰酸酯基团的化合物(诸如异氰酸酯组分)可以通过参数“％NCO”来表征，“％NCO”是以化合物的重量计的异氰酸酯基团的量(按重量计)。参数％NCO通过ASTM D 2572-97(2010)方法来测量。所公开的异氰酸酯组分具有至少3％、或至少6％、或至少10％的％NCO。优选地，异氰酸酯组分具有不超过25％、或18％、或14％的％NCO。
另外，所述至少一种异氰酸酯包含0至50％、或5至40％、或10至30％的游离单体含量。此外，所述至少一种异氰酸酯包含200至3000g/mol、或300至2000g/mol、或500至1000g/mol的分子量。甚至进一步地，通过ASTM D2196方法测得，异氰酸酯组分在25℃下的粘度为300至40000mPa·s、或500至20000mPa·s，或1000至10000mPa·s。
异氰酸酯组分的至少一种异氰酸酯可以选自由芳族异氰酸酯、脂族异氰酸酯、脂环族异氰酸酯以及它们的组合组成的群组。“芳族多异氰酸酯”是含有一个或多个芳香环的异氰酸酯。“脂族多异氰酸酯”不含有芳香环。“脂环族多异氰酸酯”是脂族多异氰酸酯的子集，其中化学链呈环状结构。
适用于根据本发明的芳族异氰酸酯的实例包括但不限于：亚甲基二苯基二异氰酸酯(“MDI”)的同分异构体(诸如4,4-MDI、2,2-MDI和2,4-MDI)，甲苯二异氰酸酯(“TDI”)的同分异构体(诸如2,4-TDI、2,6-TDI)，萘-二异氰酸酯(“NDI”)的同分异构体(诸如1,5-NDI)，降莰烷二异氰酸酯(“NBDI”)的同分异构体，四亚甲基二甲苯二异氰酸酯(“TMXDI”)的同分异构体，以及它们的两种或更多种的组合。优选的是MDI的同分异构体，特别是4,4-MDI和2,4-MDI(即，液体MDI)或4,4-MDI(即，固体MDI)的混合物。
适用于根据本发明的脂族和脂环族异氰酸酯的实例包括但不限于：六亚甲基二异氰酸酯(“HDI”)的同分异构体，异佛尔酮二异氰酸酯(“IPDI”)的同分异构体，二甲苯二异氰酸酯(“XDI”)的同分异构体，以及它们的组合。
以胶粘剂组合物的重量(即，异氰酸酯组分和多元醇组分的总重量)计，胶粘剂组合物中的至少一种异氰酸酯的量以重量计为至少5wt％、或至少10wt％、或至少20wt％(按重量计)。以胶粘剂组合物的重量计，胶粘剂组合物中的至少一种异氰酸酯的量按重量计不超过100wt％、或不超过95wt％、或不超过90wt％(按重量计)。
异氰酸酯组分还可以包括本领域普通技术人员公知的其它组分，例如，多元醇、催化剂等。
多元醇组分
在一些实施例中，无溶剂胶粘剂组合物还包含多元醇组分，所述多元醇组分包含至少一种高反应性胺引发的多元醇。相比现有双组分无溶剂胶粘剂组合物中使用的传统多元醇，所述多元醇组分中包含至少一种胺引发的多元醇提供了更高的反应性和更快的固化。胺引发的多元醇包含伯羟基和并入至少一个叔胺的主链。在一些实施例中，所述多元醇组分还可以包含另一种类型的多元醇，即非胺引发的多元醇。每种多元醇类型可以包括一种多元醇。可替换地，每种多元醇类型可以包括不同种类的多元醇的混合物。在一些实施例中，一种多元醇类型可以是一种多元醇，而另一种多元醇类型可以是不同种类的多元醇的混合物。
所述胺引发的多元醇包含伯羟基和并入至少一个叔胺的主链。在一些实施例中，胺引发的多元醇具有化学结构I：
其中R1、R2和R3中的每个独立地为直链或支链烷基。举例来说，每个可以独立地是C1-C6直链或支链烷基。在一些实施例中，所述胺引发的多元醇包含叔胺和仲胺。
所述至少一种胺引发的多元醇包含2至12、或3至10、或4至8的官能度。如相对于多元醇组分所使用的，“官能度”是指每分子的异氰酸酯反应性位点的数目。此外，所述至少一种胺引发的多元醇包含5至1830、或20至100、或31至40的羟基值。如相对于多元醇组分所使用的，“羟基值”是可用于反应的反应性羟基的量的量度。该值在湿式分析方法中测定，并且记录为与1g样品中发现的羟基相当的氢氧化钾毫克数。确定羟基值的最常用方法在ASTM D4274D中进行了描述。此外，所述至少一种胺引发的多元醇包含在25℃下500至20000mPa·s、或1000至15000mPa·s、或1500至10000mPa·s的粘度。
适用于根据本发明的胺引发的多元醇利用一种或多种环氧烷烃通过烷氧基化一种或多种胺引发剂制备。
以胶粘剂组合物的重量(即，异氰酸酯组分和多元醇组分的总重量)计，胶粘剂组合物中的至少一种胺引发的多元醇的量按重量计为至少2wt％、或至少10wt％、或至少20wt％。以胶粘剂组合物的重量计，胶粘剂组合物中的至少一种胺引发的多元醇的量按重量计不超过100wt％、或不超过95wt％、或不超过90wt％。
在一些实施例中，所述多元醇组分包含用于提高体系反应性的催化剂。适于充分提高胶粘剂组合物的反应性而使得它们可根据所公开方法来使用的催化剂包括但不限于：铋催化剂、锌催化剂、锆催化剂、锡催化剂和铝催化剂。
在一些实施例中，至少一种非胺引发的多元醇任选地可被包括在胶粘剂组合物中，例如被包括在多元醇组分中。非胺引发的多元醇的实例包括但不限于：聚酯多元醇、聚醚多元醇、聚碳酸酯多元醇、聚丙烯酸酯多元醇、聚己内酯多元醇、聚烯烃多元醇、天然油多元醇，以及它们的两种或更多种的组合。优选地，通过ASTM D2196方法测得，非胺引发的多元醇在25℃下的粘度为30至40000mPa·s、或50至30000mPa·s、或70至20000mPa·s。优选地，通过ASTM D2196方法测得，非胺引发的多元醇在25℃下的粘度为100至10000mPa·s。
胶粘剂组合物中的至少一种非胺引发的多元醇的量为至少0wt％、或至少5wt％、或至少10wt％。胶粘剂组合物中的至少一种非胺引发的多元醇的量不超过98wt％、或不超过90wt％、或不超过80wt％。
异氰酸酯组分与多元醇组分的重量混合比通过调节每种组分对于其相应基底的涂层重量来控制。在一些实施例中，最终胶粘剂组合物中的异氰酸酯组分与多元醇组分的混合比可以是100:100、或100:90、或100:80。所公开的胶粘剂组合物相比传统胶粘剂更具有包容性，并且可以接纳一些涂层重量误差(例如，高达约10％的涂层重量误差)。
在一些实施例中，胶粘剂组合物中可以任选地包括一种或多种添加剂。此类添加剂的实例包括但不限于：增粘剂、增塑剂、流变改性剂、助粘剂、抗氧化剂、填料、着色剂、表面活性剂、催化剂、溶剂，以及它们的两种或更多种的组合。
多元醇组分还可以包括本领域普通技术人员公知的其它组分，例如，另外的多元醇、催化剂、异氰酸酯等。
层压体的形成
可以预期，将所公开方法中使用的无溶剂胶粘剂组合物的异氰酸酯组分和多元醇组分单独配制并储存，直到需要形成层压结构。优选地，异氰酸酯组分和多元醇组分在25℃下处于液态。即使组分在25℃下为固体，也可以根据需要加热组分而使其处于液体状态。因为胶粘剂组合物的贮存期与固化过程不挂钩，所以所述组分可以无限期地储存。
根据所公开的方法形成的层压体可以通过将胶粘剂组合物的异氰酸酯和多元醇组分分别涂布到两种不同的基底(诸如两个膜)来形成。所本文所使用，“膜”是在一个维度中为0.5mm或更小、而在其它两个维度中为1cm或更大的任何结构。“聚合物膜”是由聚合物或聚合物的混合物制成的膜。聚合物膜的组成通常为80重量百分比或更大的一种或多种聚合物。
现转到图1，出于说明的目的，示出了用于实施所述方法的装置的示意图。该装置包括可从第一退卷机卷(unwinder web)104退卷的第一基底102。如上所述，第一基底可以是膜。第一基底102通过涂布单元106，其中胶粘剂组合物的异氰酸酯组分层被涂布到第一基底102。涂布单元包括定量给料辊，该定量给料辊通常在30℃和40℃之间操作。涂布单元还包括涂布辊，该涂布辊通常在30℃和60℃之间操作。该装置还包括可从第二退卷机卷110退卷的第二基底108。第二基底108也可以是膜。第二基底通过108通过涂布单元112，其中胶粘剂组合物的多元醇组分层被涂布到第二基底108。优选地，分别被涂布到第一基底102和第二基底108的第一层和第二层中的每个的厚度为0.5至2.5μm。通过控制涂布到每个基底的层的厚度，可以控制组分的比率。
然后，第一基底102和第二基底108的表面穿过用于向第一基底102和第二基底108(例如，轧辊114)施加外部压力的装置。轧辊通常在30和50℃之间和2和4巴之间的压力下操作。将异氰酸酯组分和多元醇组分合在一起，形成可固化的胶粘剂混合物层。当第一基底102和第二基底108的表面合在一起时，可固化胶粘剂混合物层的厚度为1至5μm。当第一基底102和第二基底108合在一起并且组分彼此接触时，异氰酸酯组分和多元醇组分开始混合和反应。这标志着固化过程的开始。
当第一基底102和第二基底108穿过各种其它辊(例如，辊116)并最终到达重卷辊118时，完成了进一步的混合和反应。当第一基底102和第二基底108穿过辊时，发生了进一步的混合和反应，这是因为基底中的每个采取比另一基底更长或更短的路径通过每个辊。以这种方式，两个基底相对于彼此移动，从而在相应的基底上混合组分。涂布装置中的辊的布置在本领域中是公知的。然后固化可固化的混合物或使其固化。
层压结构中合适基底包括膜，诸如纸张、织造和非织造织物、金属箔、聚合物以及金属涂覆的聚合物。膜任选地具有其上用油墨印刷图像的表面；油墨可以与胶粘剂组合物接触。
现转到图2，示出了显示根据本发明的胶粘剂组合物(即，包含所公开的胺引发的多元醇)和不含胺引发的多元醇的胶粘剂组合物的反应性曲线的图表。在图2中，以多元醇组分的重量计，包含13重量百分比的胺引发的多元醇的胶粘剂组合物在层压时最初包含在40℃下约4000mPa·s的粘度。令人惊讶的是，在层压后不到十五分钟内，粘度迅速增加至大于10000mPa·s。以多元醇组分的重量计，包含8重量百分比的胺引发的多元醇的胶粘剂组合物在层压时最初包含在40℃下约3000mPa·s的粘度。令人惊讶的是，在层压后不到20分钟内，粘度迅速增加至大于10000mPa·s。相反，不含胺引发的多元醇的胶粘剂组合物在层压时最初包含在40℃下约1000mPa·s的粘度。在层压后约60分钟内，粘度不超过10000mPa·s。该反应性曲线是现有无溶剂胶粘剂组合物的典型特点。
本发明实例
现将通过描述示出所公开的胶粘剂组合物和现有胶粘剂组合物的实例(统称为“实例”)来更详细地解释本发明。然而，本发明的范围当然不限于所述实例。
在实例中，异氰酸酯组分包含本领域普通技术人员公知的芳族异氰酸酯，例如TDIMDI。实例的多元醇组分根据以下表1中所列的制剂制备：
表1：OH组分样品制剂
包含表1中所述的多元醇组分的层压结构在诺德美克(Nordmeccanica)LABOCOMBITM层压机上制备。然后在LABOCOMBITM层压机上测试所制备的层压结构的粘合强度和伯芳香胺衰减。根据ASTM F904测试层压结构的粘合强度。伯芳香胺衰减分析是一种在水性食品刺激剂(3％乙酸)中确定伯芳香胺的试验。该试验是基于官方BrF方法No.L 00-00.6和欧盟委员会规定No.10/2011。
性能结果示于以下表2中。粘合强度根据ASTM F904在层压后的2小时、4小时、1天和2天测量。在层压后的24小时、2天和3天，根据BrF方法No.L 00-00.6和欧盟委员会规定No.10/2011测试伯芳香族胺衰减。
表2：LABOCOMBITM的性能结果
在表2中，“a”表示胶粘剂保持完整，“t”表示层压结构中的一者被撕裂。基于表2中的数据，包含胺引发的多元醇增强了胶粘剂组合物的反应性。如表3所示，包含胺引发的多元醇的制剂表现出更快的粘合形成和更快的PAA衰减。特别地，在两天内实现完全的粘合形成。当至少一种异氰酸酯和多元醇的所有官能团(例如，NCO和OH基团)已经反应并且并入到最终的聚合物链中时，即没有进行进一步的交联反应并且实现最终的粘合性能、耐热性和耐化学性，则发生了完全的粘合形成。然而，在层压后1小时内，使用包含高反应性胺引发的多元醇的多元醇组分来实现足以割开层压结构的粘合力。当层压结构具有至少为1N/15min的粘合强度和无粘性的胶粘剂时，所述层压结构具有足以割开的粘合力。
层压结构还在具有两个涂覆头的层压机上形成，如根据本发明所设想的。然后测试所制备的层压结构的粘合强度和伯芳香胺衰减。
表3：双涂覆头层压机的性能结果
如表3所示，包括所公开的胺引发的多元醇的胶粘剂组合物令人惊讶地在层压的两小时内达到超过1.0N/15min的粘合强度。许多实例甚至在层压的两小时内表现出超过2.0N/15min的粘合强度。

Claims (18)

1.一种用于形成层压结构的方法，其包含：
将异氰酸酯组分均匀地涂布到第一基底，所述异氰酸酯组分包含至少一种异氰酸酯；
将多元醇组分均匀地涂布到第二基底；
将所述第一基底和所述第二基底合在一起，从而使所述异氰酸酯组分和所述多元醇组分混合并反应，以在所述第一基底和所述第二基底之间形成胶粘剂；以及
固化所述胶粘剂以粘合所述第一基底和所述第二基底，
其中所述胶粘剂在将所述第一基底和所述第二基底合在一起之后的10分钟内具有大于10000mPa·s(在40℃下)的粘度。
2.根据权利要求1所述的用于形成层压结构的方法，其中，以0.5:1至1.5:1的异氰酸酯组分与多元醇组分的比率分别将所述异氰酸酯组分和所述多元醇组分涂布到所述第一基底和所述第二基底。
3.根据权利要求1所述的用于形成层压结构的方法，其中，以0.25至1.5g/m2的涂层重量分别将所述异氰酸酯组分和所述多元醇组分涂布到所述第一基底和所述第二基底。
4.根据权利要求1所述的用于形成层压结构的方法，其中所述胶粘剂组合物在将所述第一基底和所述第二基底合在一起之后的60分钟内包含至少为0.5N/15mm的粘合强度。
5.根据权利要求1所述的用于形成层压结构的方法，其中将所述第一基底和所述第二基底合在一起包含使所述第一基底和所述第二基底通过辊。
6.根据权利要求1所述的用于形成层压结构的方法，还包含：在通过使所述第一基底和所述第二基底通过一个或多个辊而将所述第一基底和所述第二基底合在一起之后，将所述异氰酸酯组分和所述多元醇组分混合。
7.根据权利要求1所述的用于形成层压结构的方法，其中所述第一基底和所述第二基底各自选自由纸张、织造和非织造织物、金属箔、聚合物膜、金属涂覆的聚合物膜、印刷膜以及它们的两种或更多种的组合组成的群组。
8.根据权利要求1所述的用于形成层压结构的方法，还包含：在分别涂布到所述第一基底和所述第二基底之前，将所述异氰酸酯组分和所述多元醇组分加热到30至80℃之间。
9.根据权利要求1所述的用于形成层压结构的方法，其中，所述异氰酸酯组分和所述多元醇组分包含在40℃下500至10000mPa·s的粘度。
10.一种用于形成层压结构的方法，其包含：
将异氰酸酯组分均匀地涂布到第一基底，所述异氰酸酯组分包含至少一种异氰酸酯；
将多元醇组分均匀地涂布到第二基底，所述多元醇组分包含至少一种胺引发的多元醇，所述胺引发的多元醇包含伯羟基和并入叔胺的主链；
将所述第一基底和所述第二基底合在一起，从而使所述异氰酸酯组分和所述多元醇组分混合并反应，以在所述第一基底和所述第二基底之间形成胶粘剂；以及
固化所述胶粘剂以粘合所述第一基底和所述第二基底。
11.根据权利要求10所述的用于形成层压结构的方法，其中所述胶粘剂在将所述第一基底和所述第二基底合在一起之后的10分钟内具有大于10000mPa·s(在40℃下)的粘度。
12.根据权利要求10所述的用于形成层压结构的方法，其中所述胺引发的多元醇具有结构I：
其中R1、R2和R3独立地为直链或支链烷基。
13.根据权利要求10所述的用于形成层压结构的方法，其中所述胺引发的多元醇的官能度为4。
14.根据权利要求10所述的用于形成层压结构的方法，其中所述胺引发的多元醇的羟基值为37。
15.根据权利要求10所述的用于形成层压结构的方法，其中所述胺引发的多元醇包含在25℃下约1200mPa·s的粘度。
16.根据权利要求10所述的用于形成层压结构的方法，其中所述胺引发的多元醇包含约6000g/mol的分子量。
17.根据权利要求10所述的用于形成层压结构的方法，其中，以0.5:1至1.5:1的异氰酸酯组分与多元醇组分的比率分别将所述异氰酸酯组分和所述多元醇组分涂布到所述第一基底和所述第二基底。
18.一种用于形成层压结构的方法，其包含：
将异氰酸酯组分均匀地涂布到第一基底，所述异氰酸酯组分包含至少一种异氰酸酯；
将多元醇组分均匀地涂布到第二基底，所述多元醇组分包含选自由铋催化剂、锌催化剂、锆催化剂、锡催化剂和铝催化剂组成的群组的至少一种催化剂；
将所述第一基底和所述第二基底合在一起，从而使所述异氰酸酯组分和所述多元醇组分混合并反应，以在所述第一基底和所述第二基底之间形成胶粘剂；以及
固化所述胶粘剂以粘合所述第一基底和所述第二基底。
CN201710165096.0A 2016-05-10 2017-03-20 用于形成包含包括胺引发的多元醇的双组分无溶剂胶粘剂组合物的层压体的方法 Active CN106903969B (zh)

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US17/202,680 US20210197523A1 (en) 2016-05-10 2021-03-16 Method for forming a laminate comprising a two-component solventless adhesive composition including an amine-initiated polyl
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