CN109937218B - 可活化粘合剂组合物和包含其的无衬标签和胶带 - Google Patents
可活化粘合剂组合物和包含其的无衬标签和胶带 Download PDFInfo
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- CN109937218B CN109937218B CN201780070221.8A CN201780070221A CN109937218B CN 109937218 B CN109937218 B CN 109937218B CN 201780070221 A CN201780070221 A CN 201780070221A CN 109937218 B CN109937218 B CN 109937218B
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- 230000001070 adhesive effect Effects 0.000 title claims abstract description 55
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 5
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- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
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- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 3
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 3
- 125000004964 sulfoalkyl group Chemical group 0.000 claims description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 20
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
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- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 description 2
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- 239000001099 ammonium carbonate Substances 0.000 description 2
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- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 2
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- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
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- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
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- 239000010452 phosphate Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
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- AQWSFUIGRSMCST-UHFFFAOYSA-N 3-pyridin-3-ylsulfonyl-5-(trifluoromethyl)chromen-2-one Chemical compound N1=CC(=CC=C1)S(=O)(=O)C=1C(OC2=CC=CC(=C2C=1)C(F)(F)F)=O AQWSFUIGRSMCST-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
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- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- MGFFVSDRCRVHLC-UHFFFAOYSA-N butyl 3-sulfanylpropanoate Chemical compound CCCCOC(=O)CCS MGFFVSDRCRVHLC-UHFFFAOYSA-N 0.000 description 1
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- LDTLDBDUBGAEDT-UHFFFAOYSA-N methyl 3-sulfanylpropanoate Chemical compound COC(=O)CCS LDTLDBDUBGAEDT-UHFFFAOYSA-N 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
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- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 1
Classifications
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F220/12—Esters of monohydric alcohols or phenols
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J133/08—Homopolymers or copolymers of acrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
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- G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
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Abstract
公开了可活化粘合剂组合物。所述可活化粘合剂组合物包含两段聚合物粒子,其包含第一段,所述第一段包含酸含量小于200mg KOH/g的亲水性丙烯酸聚合物;在所述第一段内聚合并且包含疏水性丙烯酸聚合物的第二段;和可溶于所述第一段和所述第二段中的增粘剂。另外,公开了包含可活化粘合剂组合物的无衬标签和胶带。再者,还公开了用于使用可活化粘合剂组合物将第一衬底粘合到第二衬底的方法。
Description
相关申请的交叉引用
本申请要求2016年9月30日提交的美国临时申请第62/402,416号的权益。
技术领域
本公开涉及粘合剂标签和胶带以及热密封涂层的领域。更具体地,本公开涉及包含包括两段丙烯酸聚合物组合物的可热活化压敏粘合剂的无衬标签和胶带。所公开的可热活化压敏粘合剂不需要硅酮顶涂层或粘合剂从涂布点起为粘性的。相反地,所公开的压敏粘合剂没有初始粘性但是可通过施用外部刺激,如施用热能,例如加热使其为粘性的。
在一些实施例中,公开用于无衬胶带或标签的可活化粘合剂组合物和热密封涂层,组合物包含两段聚合物粒子和可溶于两段聚合物粒子中的增粘剂。在一些实施例中,两段聚合物粒子包含第一段,其包含酸含量小于200mg KOH/g的亲水性丙烯酸聚合物,和在第一段内聚合并且包含疏水性丙烯酸聚合物的第二段。
背景技术和发明内容
许多常规粘合剂产品包括离型衬垫以防止粘合剂产品过早地粘附到表面。硅酮离型衬垫表示在标签行业中大量的浪费和成本。不需要离型衬垫的标签或“无衬”标签越来越受欢迎以便减少浪费和运输成本。一种用于无衬标签的方法为用硅酮离型涂层顶部涂布标签表面。这消除离型衬垫原料但不是与硅酮自身相关联的成本。顶部涂布方法还未解决与不能再现的硅酮固化或对顶部涂布的硅酮离型层产生的标签外观的不良影响相关联的问题。替代的方法使用可活化粘合剂,其可经由活化方法(如UV光或热活化)从硬转变为粘性。
期望用于无衬胶带和/或标签以及热密封涂层的可活化粘合剂组合物,特别地实现比现有方法改进的粘附和粘连的组合物。
本文公开包含两段聚合物粒子的可活化粘合剂组合物。在一些实施例中,两段聚合物粒子包含第一段和在第一段内聚合的第二段。在一些实施例中,第一段包含酸含量小于200mg KOH/g的亲水性丙烯酸聚合物。第二段包含疏水性丙烯酸聚合物。在一些实施例中,可活化粘合剂组合物包含可溶于第一段、第二段,或两段中的增粘剂。在一些实施例中,增粘剂为氢化松香酯增粘剂,其中软化点在90℃和110℃之间。在一些实施例中,苯乙烯存在于第一段、第二段或两者。在一些实施例中,第一段和第二段为不可混溶的。
在一些实施例中,与第二段比较,第一段具有相对较高的玻璃化转变温度。在一些实施例中,与疏水性丙烯酸聚合物比较,亲水性丙烯酸聚合物具有相对较低的分子量。
还公开包含本文所描述的可活化粘合剂组合物的压敏粘合剂。还公开包含本文所描述的压敏粘合剂的无衬标签。还公开包含本文所描述的压敏粘合剂的无衬胶带。
公开用于将第一衬底粘合到第二衬底的方法,方法包含将本文公开的可活化粘合剂组合物施用到第一衬底的表面,加热可活化粘合剂组合物,和使第一衬底的表面与第二衬底的表面接触。
具体实施方式
公开包含两段聚合物粒子和增粘剂的可活化粘合剂组合物。在一些实施例中,两段聚合物粒子包含第一段和在第一段内聚合的第二段。
第一段
在一些实施例中,第一段包含酸含量小于200mg KOH/g,或0到200mg KOH/g,或10到150mg KOH/g,或20到100mg KOH/g的亲水性丙烯酸聚合物。在一些实施例中,第一段的玻璃化转变温度(“Tg”)为40℃到150℃,或50℃到100℃,或56℃到91℃。在一些实施例中,第一段的玻璃化转变温度相对高于第二段的玻璃化转变温度。
在一些实施例中,第一段的亲水性丙烯酸聚合物的数均分子量(“Mn”)为2,000到100,000g/mol,或5,000到10,000g/mol。在一些实施例中,第一段的分子量相对低于第二段的分子量。
在第一段和第二段中的聚合物的疏水性可使用Hansch疏水性数(Hanschhydrophobicity number)表示。Hansch疏水性数被计算为在聚合物组合物内取代基常数的加权平均值。取代基常数可如在美国化学学会杂志(J.Am.Chem.Soc.)1964,86(23),第5175-5180页中所描述发现。较高的Hansch疏水性数指示疏水性更高的聚合物,而较低的数指示亲水性更高的聚合物。亲水性更高的聚合物(即,较低Hansch疏水性数)倾向于向粒子的外部分配。疏水性更高的聚合物(即,较高Hansch疏水性数)倾向于向粒子的内部分配。在公开的实施例中,第一段和第二段的Hansch疏水性数不同,使得这些段保持大部分不可混溶,具有足够的相似性以允许界面稳定性。此外,亲水性更高的段(即,较低Hansch疏水性数)比其它段具有更高的玻璃化转变温度。在一些实施例中,亲水性丙烯酸聚合物的Hansch疏水性数为1.2到4.5,或1.5到3.5,或1.73到2.33。
在一些实施例中,适合于生产亲水性丙烯酸聚合物的单体包括但不限于丙烯酸(“AA”)、甲基丙烯酸(“MAA”)、AA和MAA的酯、衣康酸(“IA”)、巴豆酸(“CA”)、丙烯酰胺(“AM”)、甲基丙烯酰胺(“MAM”),和AM和MAM的衍生物,例如烷基(甲基)丙烯酰胺。AA和MAA的酯包括但不限于烷基、羟基烷基、磷酸烷基和磺基烷基酯,例如甲基丙烯酸甲酯(“MMA”)、甲基丙烯酸乙酯(“EMA”)、甲基丙烯酸丁酯(“BMA”)、甲基丙烯酸羟乙基酯(“HEMA”)、丙烯酸羟乙酯(“HEA”)、甲基丙烯酸羟丙酯(“HPMA”)、丙烯酸羟丁酯(“HBA”)、丙烯酸甲酯(“MA”)、丙烯酸乙酯(“EA”)、丙烯酸丁酯(“BA”)、丙烯酸2-乙基己酯(“EHA”)、甲基丙烯酸环己酯(“CHMA”)、丙烯酸苯甲酯(“BzA”)、丙烯酸异辛酯、丙烯酸月桂酯、丙烯酸硬脂酯,和甲基丙烯酸磷酸烷酯(例如PEM),和其两种或更多种的混合物。也可使用链转移剂,其可包括硫醇或其它合适的化合物。链转移剂的实例可包括但不限于甲基-3-巯基丙酸酯、丁基-3-巯基丙酸酯、十二烷基硫醇、己硫醇、异丙醇,和其两种或更多种的混合物。
在一些实施例中,第一段的亲水性丙烯酸聚合物占两段聚合物粒子的10重量%到50重量%。
第二段
第二段包含疏水性丙烯酸聚合物。在一些实施例中,第二段的玻璃化转变温度为-80℃到-30℃,或-60℃到-40℃,或-55℃到-45℃。在一些实施例中,第二段的玻璃化转变温度相对低于第一段的玻璃化转变温度。
在一些实施例中,第二段的疏水性丙烯酸聚合物的数均分子量(“Mn”)为10,000到1,000,000g/mol,或20,000到500,000g/mol,或30,000到100,000g/mol。在一些实施例中,第二段的分子量相对高于第一段的分子量。
在一些实施例中,疏水性丙烯酸聚合物的汉施疏水性数为2.0到11.0,或2.5到6.0,或3.23到3.34。
在一些实施例中,适合于生产疏水性丙烯酸聚合物的单体包括但不限于丙烯酸(“AA”)、甲基丙烯酸(“MAA”)、AA和MAA的酯、衣康酸(“IA”)、巴豆酸(“CA”)、丙烯酰胺(“AM”)、甲基丙烯酰胺(“MAM”),和AM和MAM的衍生物,例如烷基(甲基)丙烯酰胺。AA和MAA的酯包括但不限于烷基、羟基烷基、磷酸烷基和磺基烷基酯,例如甲基丙烯酸甲酯(“MMA”)、甲基丙烯酸乙酯(“EMA”)、甲基丙烯酸丁酯(“BMA”)、甲基丙烯酸羟乙基酯(“HEMA”)、丙烯酸羟乙酯(“HEA”)、甲基丙烯酸羟丙酯(“HPMA”)、丙烯酸羟丁酯(“HBA”)、丙烯酸甲酯(“MA”)、丙烯酸乙酯(“EA”)、丙烯酸丁酯(“BA”)、丙烯酸2-乙基己酯(“EHA”)、甲基丙烯酸环己酯(“CHMA”)、丙烯酸苯甲酯(“BzA”)、丙烯酸异辛酯、丙烯酸月桂酯、丙烯酸硬脂酯,和甲基丙烯酸磷酸烷酯(例如PEM)、甲基丙烯酸十八烷酯(“SMA”),和其两种或更多种的混合物。
在一些实施例中,以第二段的重量计,第二段含有至少80丙烯酸丁酯。
两段聚合物粒子合成
在一些实施例中,第一段-较硬、亲水性更高的段-在第二段之前聚合,即,第一段为“第一段”或“段1”。第二段-较软、疏水性更高的段-在第一段内聚合,即,第二段为“第二段”或“段2”。硬亲水性段可原位合成或可使用现有碱溶性聚合物。
在一些实施例中,第一段占两段聚合物粒子的10重量%到50重量%,或10重量%到30重量%,或15重量%到25重量%。在一些实施例中,第二段占两段聚合物粒子的50重量%到90重量%,或70重量%到90重量%,或75重量%到85重量%。
增粘剂
公开的可活化粘合剂组合物进一步包含增粘剂。在一些实施例中,增粘剂与两段聚合物一起共混。在一些实施例中,增粘剂可溶于第一段、第二段或两段中。即,增粘剂与两段聚合物粒子的第一段和第二段均相容。在一些实施例中,增粘剂为氢化松香酯增粘剂。优选的是,增粘剂的软化点为85℃到130℃,或90℃到120℃,或90℃到110℃。在一些实施例中,增粘剂为氢化松香酯增粘剂,其中软化点为90℃到110℃。
在一些实施例中,以共混物的干燥重量计,增粘剂占两段聚合物粒子和增粘剂共混物的总重量的5重量%到50重量%。
在一些实施例中,苯乙烯存在于第一段、第二段或两段。
公开的可活化粘合剂组合物可并入到各种应用中,包括例如用于无衬标签和胶带以及热密封涂层的压敏粘合剂。
本文还公开用于将第一衬底粘合到第二衬底的方法。在一些实施例中,方法包括将可活化粘合剂组合物(如本文中所论述的那些)施用到第一衬底的表面,将热能施用到(如加热)可活化粘合剂组合物,并且使第一衬底的表面与第二衬底的表面接触。公开的可活化粘合剂组合物最初为硬的并且在施用热能时转变粘性的。以此方式,可缠绕包括公开的可活化粘合剂的无衬标签或胶带而没有任何粘附或粘连问题,并且当标签或胶带准备好粘合到表面时,粘合剂可被热活化。
本公开的实例
现在将通过展示说明性实例和比较实例(统称为“实例”)来进一步详细地解释本公开。然而,本公开的范围当然不限于所述实例。
实例制备:合成
通过两段逐渐添加丙烯酸聚合方法制备实例。本文所描述的方法通过两种不同的方法进行,所述方法通过选择用于建立乳液的最终粒度的初始预成形件晶种确定。预成形件晶种为具有相对均匀粒度的小粒子,其可用于“接种”在乳液聚合方法期间形成的粒子。使用的两种预成形件晶种具有不同粒径,并且因此需要与总单体含量的不同水平或比率,以便实现200nm的最终粒度。方法在下表1中概括。
表1:方法概括
方法 | 预成形件 | 平均预成形件粒度(nm) | 晶种百分比 | 最终粒度(nm),理论 |
A | 1 | 100 | 12.5% | 200 |
B | 2 | 60 | 2.7% | 200 |
说明性实例1(“IE1”)~45%固体
在氮气吹扫下将最初装料的去离子水和12.5wt%(以总单体(“BOTM”)计)聚合物预成形件1的装配有顶置式搅拌器、氮气吹扫和热电偶的四颈5L圆底烧瓶加热到90℃。在90℃下,关闭氮气并且减少热源以便将釜保温。将0.15wt%(以总单体计)碳酸铵(用作缓冲液)和0.3wt%(以总单体计)过硫酸铵(“APS”)添加到烧瓶。在82℃到84℃的起始温度下,在25分钟内进料占在两段方法中的总单体的10wt%的段1单体乳液(“ME”)、表面活性剂和水,并且在85℃的反应温度下在35分钟进料0.8wt%(以段单体计)APS。在表2中详述实例的各种段1和段2单体乳液的相关组分。在APS进料结束之后,将批料在85℃下保持20分钟。在保持20分钟之后,然后在90分钟内将占在两段方法中的总单体的90%的段2ME、表面活性剂和水进料到反应器,同时在110分钟内0.12wt%(以总单体计)APS的引发剂装料(其中添加0.2克的~29%氨水)进料到釜。然后将批料保持在85℃下20分钟并且冷却到60℃。在60℃下,添加少量0.009%FeSO4 7H2O,随后0.1wt%(以总单体计)叔丁基氢过氧化物(t-BHP)和0.06wt%(BOTM)甲醛次硫酸钠(“SSF”)。然后将批料在60℃下保持20分钟。在保持结束时,添加0.06wt%(以总单体计)过氧化氢。然后将批料冷却到45℃,并且通过添加~14%氢氧化铵水溶液中和到pH 8.5。然后将批料冷却到35℃并且过滤通过100目筛网。
说明性实例2(“IE2”)和比较实例3(“CE3”)~45%固体
说明性实例2和比较实例3以与说明性实例1相同的方式制备,其中不同的段1和段2组合物,其在表2中详述。
说明性实例3(“IE3”)~45%固体
在氮气吹扫下将最初装料的去离子水的装配有顶置式搅拌器、氮气吹扫和热电偶的四颈5L圆底烧瓶加热到90℃。在90℃下,关闭氮气并且减少热源以便将釜保温。向釜添加0.3wt%(以总单体计)APS和2.7wt%(以总单体计)的聚合物预成形件2装料。在82℃到84℃的起始温度下,在35分钟内进料占在两段方法中的总单体的15wt%的段1ME、表面活性剂和水,并且在85℃的反应温度下在45分钟内进料0.8wt%(以段单体计)APS。在APS进料结束之后,将批料在85℃下保持20分钟。在此20分钟保持之后,然后在90分钟内将占在两段方法中的总单体的85%的段2ME、表面活性剂和水进料到反应器,同时在110分钟内将0.12wt%(以总单体计)APS进料到釜。前10分钟进料以最终进料速率的一半开始,并且然后剩余的单体乳液分别在剩余80和100分钟内进料。然后将批料保持在85℃下20分钟并且冷却到60℃。在60℃下,添加少量0.009%FeSO4 7H2O,随后0.1wt%(以总单体计)叔丁基氢过氧化物(t-BHP)和0.06wt%(以总单体计)SSF。然后将批料在60℃下保持20分钟。在保持结束时,添加第二追加的0.06wt%(以总单体计)过氧化氢。然后将批料冷却到45℃,并且通过添加~14%氢氧化铵水溶液中和到pH 8.5。然后将批料冷却到35℃并且过滤通过100目筛网。
说明性实例4(“IE4”)~45%固体
除单体乳液段比率之外,说明性实例4以与说明性实例3相同的方式制备。单体乳液段比率的变化导致随后单体乳液进料时间表的变化。在说明性实例4的情况下,在40分钟内进料占在两段方法中的总单体的20wt%的段1ME、表面活性剂和水,并且在50分钟内以85℃的反应温度进料0.8wt%(以段单体计)APS,同时然后在85分钟内将占在两段方法中的总单体的80%的段2ME、表面活性剂和水进料到反应器,同时在105分钟内将0.12wt%(以总单体计)APS进料到釜。前10分钟进料以半速率开始,并且然后分别在剩余75和95分钟内斜变到全速率。说明性实例4的所有其它方面与说明性实例3相同。
说明性实例5(“IE5”)~45%固体
除单体乳液段比率之外,说明性实例5以与说明性实例3相同的方式制备。段比率的变化导致其随后ME进料时间表的变化。在说明性实例5的情况下,在45分钟内进料占在两段方法中的总单体的25wt%的段1ME、表面活性剂和水,并且在55分钟内以85℃的反应温度进料0.8wt%(以段单体计)APS,同时然后在80分钟内将占在两段方法中的总单体的75wt%的段2ME、表面活性剂和水进料到反应器,同时在100分钟内将0.12wt%(以总单体计)APS进料到釜。前10分钟进料以半速率开始,并且然后分别在剩余70和90分钟内斜变到全速率。说明性实例5的所有其它方面与说明性实例3相同。
说明性实例6(“IE6”)到12(“IE12”)~45%固体
说明性实例6到12以与说明性实例3相同的方式制备,其中在表2中提到变化。
说明性实例13(“IE13”)和比较实例2(“CE2”)~45%固体
说明性实例13和比较实例2以与说明性实例1相同的方式制备,其中在表2中提到变化。
比较实例1(“CE1”)~50%固体
在氮气吹扫下将最初装料的去离子水的装配有顶置式搅拌器、氮气吹扫和热电偶的四颈5L圆底烧瓶加热到90℃。在90℃下,关闭氮气并且减少热源以便将釜保温。向釜添加0.3wt%(以总单体计)APS和2.7wt%(以总单体计)的聚合物预成形件2装料。在82℃到84℃的起始温度下,在90分钟内进料占在两段方法中的总单体的85wt%的段1ME、表面活性剂和水,并且在85℃的反应温度下在110分钟内进料0.14wt%(以段单体计)APS。前10分钟进料以半速率开始,并且然后分别在剩余80和100分钟斜变到全速率。在APS进料结束之后,将批料在85℃下保持20分钟。在此20分钟保持之后,然后在35分钟内将占在两段方法中的总单体的15%的段2ME、表面活性剂和水进料到反应器,同时在45分钟内将0.12wt%(以总单体计)APS进料到烧瓶。由于凝胶形成,批料到段2进料中中止7分钟。烧瓶的内容物氧化还原试剂逐出并且舍弃批料。
比较实例4(“CE4”)~45%固体
比较实例4使用具有与说明性实施例1匹配的总组合物的单阶段单体乳液制备。在氮气吹扫下将最初装入去离子水和12.5wt%(以总单体计)聚合物预成形件1的装配有顶置式搅拌器、氮气吹扫和热电偶的四颈5L圆底烧瓶加热到91℃。在91℃下,关闭氮气并且减少热源以便将釜保温。向釜添加0.15wt%(以总单体计)碳酸铵(用作缓冲液)和0.3wt%(以总单体计)APS。在82℃到84℃的起始温度下,在120分钟内进料占在单阶段方法中的总单体的100%的ME、表面活性剂和水,并且在85℃的反应温度下在140分钟内进料0.2wt%(以总单体计)APS。在APS进料结束之后,将批料在85℃下保持20分钟。在此20分钟保持之后,将批料冷却到60℃。在60℃下,添加少量0.009%FeSO47H2O,随后0.1wt%(以总单体计)t-BHP和0.05wt%(以总单体计)SSF。然后将批料在60℃下保持20分钟。在保持结束时,添加0.06wt%(以总单体计)过氧化氢。然后将批料冷却到45℃,并且通过添加~14%氢氧化铵水溶液中和到pH 8.5。然后将批料冷却到35℃并且过滤通过100目筛网。
表2:实例组合物
对于第一段(即,段1,亲水性段)的可接受的玻璃化转变温度的范围为40℃到150℃。此玻璃化转变温度的范围确保固体壳在室温至常见的粘连温度(大约40℃)下保持含有软、发粘的芯。对于第一段,说明性实例的玻璃化转变温度的范围为56℃到91℃。根据Fox-Flory方程确定实例的玻璃化转变温度,对于第二段(即,段2,疏水性段),可接受的玻璃化转变温度的范围为-65℃到-25℃。此玻璃化转变温度的范围确保芯具有粘合特性。在第二段中,说明性实例的玻璃化转变温度的范围为-58℃到-50℃。如上文所论述,疏水性可使用Hansch疏水性数指示。表3详述说明性实例1到3和比较实例1到4的第一和第二段的Hansch疏水性数。示出的数目在聚合反应期间的pH下存在的状态下计算。如上文所论述,出于本公开的目的,期望两个段的Hansch疏水性数不同,使得它们保持不可混溶,并且亲水性更高的段也为较高玻璃化转变温度段。
表3:Tg和Hansch值
粘合剂组合物的配制物
在实例中,将两组分配制物以期望比率以20克的总湿重称取到6打兰小瓶中。在本文公开的表中给定的比率为湿重%。将小瓶加盖并且用手振荡30秒以确保样品充分混合。然后使样品静置2小时然后施用到衬底(2密耳聚对苯二甲酸乙二酯,从科斯腾公司(Chemsultants)获得)。将样品混合物的1.6密耳湿涂层用BYK施用器棒施用到衬底。然后在对流烘箱中在40℃下干燥经涂布样品10分钟,留下0.5到0.9密耳干膜。增粘剂阶梯实例被描述为变型并且如此标记:在聚合物乳液中10湿重%增粘剂标记为“A”,在聚合物乳液中20湿重%增粘剂标记为“B”,在聚合物乳液中30湿重%增粘剂标记为“C”,并且在聚合物乳液中40湿重%增粘剂标记为“D”,不管增粘剂或乳液固体。被描述为“单独”的变型为纯聚合物乳液。
在实例中的所有配制物给予湿重级分。干膜固体可基于配制物中每种组分的给定固体计算。
原材料配制物
Snowtack FH95G-劳特(Lawter)的氢化松香酯分散体,~57%固体。
Dermulsene DP 0708-MWV专用化学品(MWV Specialty Chemicals)的稳定的松香酯分散体,53%固体。
粘附测试方法
干膜抵着用于保护的硅酮离型纸放置,并且在控制温度(72℉)和湿度(50%RH)室中静置过夜以平衡。然后将膜切成用于粘合剂(即,剥离)和粘连测试的1英寸乘6英寸条。制备两组条,其中一组在没有活化的情况下施用到衬底并且另一组热活化。通过使用设定在110℃和15秒下的沃尔纳马西斯公司(Werner Mathis AG)烘箱加热来活化测试条,其中条粘合剂侧面向上静置在网架上,其中方网眼为0.5cm。紧接着用2kg手动辊将带层压到下文描述的测试衬底。用相同的2kg手动辊将未活化的试纸条施用到测试衬底。剥离力为从衬底去除涂布有粘合剂的膜所需的力的测量值。在层压步骤后60分钟停留时间和24小时停留时间之后测量剥离力。具体地说,对于每一停留时间,使用测试方法PSTC 101测试方法A从不锈钢(“SS”)面板和高密度聚乙烯(“HDPE”)面板测量180°剥离力一次。所有测试使用12英寸/分钟的剥离速率而不是在测试方法中规定的5毫米/秒。
表4:粘附测试结果
粘连测试
测试方法
粘连测试使用未活化(即,未加热的)测试条,并且使粘合剂面向固定到不锈钢板的一片聚酯膜或直接热敏纸(图像层朝向粘合剂)。将此构造放置在50℃烘箱中1周,其中1kg重量在测试条的顶部,所得压力大于或等于12g/cm2。在一周之后,将构造置放在控制温度(72℉)和湿度(50%RH)室中过夜以平衡。然后使测试条经受上文所描述的180°剥离力测试。
表5:粘连测试结果
应用总结
一般来说,良好粘合剂系统在活化之前对高表面能(例如不锈钢)和低表面能(例如HDPE)表面提供低(~<2N/in)粘附并且在活化之后对那些表面提供高粘附。对于不锈钢,大于8N/in的粘附一般来说被看作良好,并且对于HDPE,大于5N/in为良好。在未活化和活化的粘附值之间的变化越大,在最终应用中的粘合剂越好。优选的失效模式为粘合剂失效,其中粘合剂干净地从它施用到的衬底去除;虽然不利失效(比如粘附失效)为粘合剂分离并且剩余在表面和粘合剂经涂布的面材上。粘连值(N/in)应平均低于5N/in,其中低于2N/in更好。再次,对于粘连测试,粘合剂失效也为优选的。
没有增粘剂的所有实例具有差的粘附△并且通常具有总体上低的粘附。说明性实例4和5由于混合的失效模式和较高的未活化粘附值(由于较高的段二量)为较不优选的。说明性实例10和11显示特别地低的粘连数和未活化粘附与高活化粘附。
比较实例1颠倒在聚合期间的阶段的顺序并且未能产生稳定乳液,这为不利的。比较实例2通过EHA代替BA使用较低的BA浓度,这引起非常高的粘连数和未活化的粘附。比较实例3应直接与说明性实例2比较,因为它使用相同的基料聚合物但是不同的非氢化增粘剂。这引起对HDPE的低的粘附和对SS的高的未活化粘附。粘连不与说明性实例一样良好。比较实例4将两个阶段合并成单个阶段进料,这引起一般的粘附失效和差的总粘附。
Claims (12)
1.一种可活化粘合剂组合物,其包含:
两段聚合物粒子,其包含:
包含酸含量小于200mg KOH/g的亲水性丙烯酸聚合物的第一段;
在所述第一段内聚合并且包含疏水性丙烯酸聚合物的第二段;和
可溶于所述第一段和所述第二段中的增粘剂,
其中所述第一段占所述第一段和所述第二段的总重量的10重量%到50重量%,其中所述疏水性丙烯酸聚合物为丙烯酸丁酯,并且以所述第二段的总重量计,占所述第二段的至少80重量%,并且其中所述增粘剂为氢化松香酯增粘剂,其软化点在90℃和110℃之间。
2.根据权利要求1所述的可活化粘合剂组合物,其中所述第一段的玻璃化转变温度为40℃到150℃。
3.根据权利要求1所述的可活化粘合剂组合物,其中所述第二段的玻璃化转变温度为-80℃到-30℃。
4.根据权利要求1所述的可活化粘合剂组合物,其中所述亲水性丙烯酸聚合物的分子量为5,000到10,000g/mol。
5.根据权利要求1所述的可活化粘合剂组合物,其中所述疏水性丙烯酸聚合物的分子量为30,000到100,000g/mol。
6.根据权利要求1所述的可活化粘合剂组合物,其中以所述粘合剂组合物的干燥重量计,所述增粘剂占所述粘合剂组合物的5重量%到50重量%。
7.根据权利要求1所述的可活化粘合剂组合物,其中所述亲水性丙烯酸聚合物包含选自由以下组成的组的单体:丙烯酸、甲基丙烯酸、丙烯酸和甲基丙烯酸的酯、衣康酸、巴豆酸、丙烯酰胺、甲基丙烯酰胺、丙烯酰胺和甲基丙烯酰胺的衍生物,和其两种或更多种的混合物。
8.根据权利要求7所述的可活化粘合剂组合物,其中所述丙烯酸和甲基丙烯酸的酯选自由以下组成的组:烷酯、羟基烷基酯、磷酸烷基酯、磺基烷基酯,和其两种或更多种的混合物。
9.根据权利要求1所述的可活化粘合剂组合物,所述第一段进一步包含苯乙烯。
10.根据权利要求1所述的可活化粘合剂组合物,所述第二段进一步包含苯乙烯。
11.一种压敏粘合剂组合物,其包含根据权利要求1所述的可活化粘合剂组合物。
12.一种用于将第一衬底粘合到第二衬底的方法,其包含:
将根据权利要求1所述的可活化粘合剂组合物施用到所述第一衬底的表面;
加热所述可活化粘合剂组合物;和
使所述第一衬底的所述表面与所述第二衬底的表面接触。
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EP0788029A2 (en) * | 1996-01-31 | 1997-08-06 | Minnesota Mining And Manufacturing Company | Laminable proofing elements |
CN1966595A (zh) * | 2005-07-14 | 2007-05-23 | 国家淀粉及化学投资控股公司 | 可活化组合物 |
CN101280029A (zh) * | 2006-12-22 | 2008-10-08 | 罗门哈斯公司 | 乳液基聚合物粘合剂 |
CN101302297A (zh) * | 2007-05-11 | 2008-11-12 | 罗门哈斯公司 | 具有乳液聚合物膜的复合材料 |
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TWI753944B (zh) | 2022-02-01 |
JP2019534916A (ja) | 2019-12-05 |
BR112019006314B1 (pt) | 2023-04-11 |
MX2019003535A (es) | 2019-06-17 |
US20190233689A1 (en) | 2019-08-01 |
JP7181189B2 (ja) | 2022-11-30 |
RU2019112233A (ru) | 2020-10-23 |
BR112019006314A2 (pt) | 2019-07-02 |
AR109556A1 (es) | 2018-12-19 |
EP3519473B1 (en) | 2022-04-20 |
CN109937218A (zh) | 2019-06-25 |
US12077620B2 (en) | 2024-09-03 |
US11345770B2 (en) | 2022-05-31 |
WO2018063477A1 (en) | 2018-04-05 |
EP3519473A1 (en) | 2019-08-07 |
RU2756222C2 (ru) | 2021-09-28 |
RU2019112233A3 (zh) | 2020-10-30 |
TW201814019A (zh) | 2018-04-16 |
US20220242982A1 (en) | 2022-08-04 |
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