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1. 发明授权

US06569949B1 Pressure-sensitive adhesives for marking films 有权
标题翻译：用于标记膜的压敏粘合剂
公开(公告)号：US06569949B1
公开(公告)日：2003-05-27
申请号：US09586122
申请日：2000-06-02
申请人： Ivan S. P Lee , Graham Yeadon , Paul Keller
发明人： Ivan S. P Lee , Graham Yeadon , Paul Keller
IPC分类号： C09J15104
CPC分类号： C09J133/08 , C09J2201/606
摘要： Inherently tacky, pressure-sensitive adhesive compositions useful in marking film applications are provided. The compositions comprise polymer particles prepared by emulsion polymerization of at least one monomer mixture. The monomer mixture comprises at least one alkyl acrylate, the alkyl group of which has from about 4 to 12 carbon atoms, preferably in an amount of from about 73% to 90% by weight, at least one unsaturated carboxylic acid containing from about 3 to 5 carbon atoms, preferably in an amount of from about 2% to 12% by weight, and at least one hard monomer, preferably present in an amount of from about 5% to 15% by weight. The particles have a mean diameter of about 300 nm or less, as determined by laser light scattering. Preferably the hard monomer comprises a styrenic monomer, more preferably both a styrenic monomer and an alkyl methacrylate. In some embodiments, the compositions are prepared by sequential polymerization of the first and second monomer charges. The compositions may also contain one or more internal or external crosslinkers.
摘要翻译：本发明提供了用于标记膜应用的压敏粘合剂组合物。组合物包含通过至少一种单体混合物的乳液聚合制备的聚合物颗粒。单体混合物包含至少一种丙烯酸烷基酯，其烷基具有约4至12个碳原子，优选约73％至90％重量的至少一种不饱和羧酸，其含有约3至 5个碳原子，优选约2重量％至12重量％的量，和至少一种硬单体，优选以约5重量％至15重量％的量存在。如通过激光散射确定的，颗粒具有约300nm或更小的平均直径。优选地，硬单体包括苯乙烯单体，更优选苯乙烯单体和甲基丙烯酸烷基酯。在一些实施方案中，通过第一和第二单体电荷的顺序聚合制备组合物。组合物还可以含有一种或多种内部或外部交联剂。

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