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Repulpable, pressure-sensitive adhesive composition and method for improving the repulpability of acrylic adhesive
Repulpable, pressure-sensitive adhesive composition and method for improving the repulpability of acrylic adhesive
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机译:可再浆化的压敏胶粘剂组合物和用于改善丙烯酸胶粘剂可再浆化的方法
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摘要
Repulpable PSA compositions and constructions that exhibit high adhesive performance on a wide range of substrates are provided. In one embodiment, a PSA composition comprises a blend of two emulsion acrylic copolymers. The first type is a repulpable, emulsion acrylic copolymer that passes TAPPI UM 213. Preferably, the copolymer is prepared by sequential polymerization. The second type of copolymer is a non-repulpable, gpp or removable, repositionable, emulsion acrylic copolymer, also preferably prepared by sequential polymerization. The PSA compositions are inherently tacky and can be used in labels and tapes. In addition, they can be added to other PSAs as external tackifiers.
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机译:提供了在多种基材上显示高粘合性能的可再制浆的PSA组合物和构造。在一个实施方案中,PSA组合物包含两种乳液丙烯酸共聚物的共混物。第一种是通过TAPPI UM 213的可再制浆的乳液丙烯酸共聚物。优选地,该共聚物通过顺序聚合制备。第二类共聚物是不可胶凝的,gpp或可除去的,可重定位的乳液丙烯酸共聚物,也优选通过顺序聚合制备。 PSA组合物具有固有的粘性,可用于标签和胶带。此外,它们可以作为外部增粘剂添加到其他PSA中。
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