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    • 7. 发明授权
    • Stamp adhesive
    • 邮票胶
    • US06242552B1
    • 2001-06-05
    • US09443571
    • 1999-11-19
    • Shiaonung Su
    • Shiaonung Su
    • C08F2214
    • C09J133/08C08F220/18C08F222/14C09J2201/606C09J2400/283Y02P20/582
    • General purpose permanent, environmentally benign, pressure-sensitive adhesives and self-adhesive postage stamps and other laminate constructions are provided. In one embodiment, the PSA is an inherently, acrylic copolymer prepared by emulsion polymerization of 27 to 29% di-(2-ethylhexyl) maleate, 19 to 21% vinyl acetate, 40 to 43% ethylhexyl acrylate, 5 to 10% methyl methacrylate, 1% acrylic acid, and 1% methacrylic acid. Notably, no multifunctional monomers having a cyanurate or phosphate moiety are included in the polymer, and the polymer is substantially uncrosslinked.
    • 提供通用的永久性,环境友好的压敏粘合剂和自粘邮票和其他层压结构。 在一个实施方案中,PSA是通过27​​至29%马来酸二(2-乙基己基)酯,19至21%乙酸乙烯酯,40至43%丙烯酸乙基己酯,5至10%甲基丙烯酸甲酯的乳液聚合制备的固有丙烯酸共聚物 ,1%丙烯酸和1%甲基丙烯酸。 值得注意的是,在聚合物中不包含具有氰脲酸酯或磷酸酯部分的多官能单体,并且聚合物基本上未交联。