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公开(公告)号：US5763525A
公开(公告)日：1998-06-09
申请号：US483208
申请日：1995-06-07
摘要： A marking composition erasable from both porous and non-porous marking substrates using substantially non-abrasive mechanical erasers. The marking composition preferably has a viscosity of less than about 10 cps and a surface tension between about 20 dynes/cm and about 40 dynes/cm and is particularly well-suited for use in capillary feed markers and similar writing instruments. In a first preferred embodiment, the marking composition comprises a water-insoluble colorant and a blend of two different non-carboxylated styrene-butadiene latex emulsions. The first latex emulsion, an embodiment of which is commercially available as PLIOLITE.RTM. LPF-2108, contains about 40% total solids by weight and has a viscosity of about 30 cps, a pH of about 11.2, a Mooney value of about 150-160, a surface tension of about 55-60 dynes/cm, and a bound styrene content of about 21-29%. The second non-carboxylated styrene-butadiene latex emulsion, an embodiment of which is commercially available as Butofan.RTM. NS 103, contains about 47% total solids by weight and has a viscosity of about 200 cps, a pH of about 9.7, a Mooney value of about 70-75, a surface tension of about 62 dynes/cm and a bound styrene content of about 24%. Preferably, the latex emulsion blend has a viscosity greater than about 50 cps, and the ratio of the second latex emulsion to the first latex emulsion is greater than or equal to about 75:25 and less than 100:0. The marking composition preferably further includes a shear-stabilizing agent, such as potassium oleate, as well as a preservative, an antioxidant, a fluorochemical surfactant and one or more anti-drying agents.
摘要翻译： 使用基本上不研磨的机械橡皮擦从多孔和无孔标记基材上剥离的标记组合物。 标记组合物优选具有小于约10cps的粘度和约20达因/厘米至约40达因/厘米的表面张力，并且特别适合用于毛细管进料标记和类似的书写工具。 在第一优选实施方案中，标记组合物包含水不溶性着色剂和两种不同的非羧化苯乙烯 - 丁二烯胶乳乳液的共混物。 第一胶乳乳液，其一个实施方案作为PLIOLITE TM LPF-2108可商购获得，含有约40重量％的总固体，其粘度为约30cps，pH为约11.2，门尼值为约150-160 ，约55-60达因/厘米的表面张力和约21-29％的结合苯乙烯含量。 第二种非羧化苯乙烯 - 丁二烯胶乳乳液，其实施方案作为Butofan TM NS 103可商购获得，其总重量为约47％，粘度为约200cps，pH为约9.7，门尼值 约70-75，约62达因/厘米的表面张力和约24％的结合苯乙烯含量。 优选地，胶乳乳液共混物的粘度大于约50cps，第二胶乳乳液与第一胶乳乳液的比例大于或等于约75:25且小于100：0。 标记组合物优选还包括剪切稳定剂，例如油酸钾，以及防腐剂，抗氧化剂，含氟化合物表面活性剂和一种或多种抗干燥剂。
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公开(公告)号：US5239314A
公开(公告)日：1993-08-24
申请号：US723147
申请日：1991-06-28
申请人： Herman Abber , Robert H. Lussier
发明人： Herman Abber , Robert H. Lussier
CPC分类号： C09J7/0203
摘要： A printing medium for the printing of images thereon to form a document by the printer of a standard facsimile machine in a manner which renders the document unreadable to a casual observer. There is a strip of a flexible printing medium receivable by the facsimile machine, and a strip of an obscuring medium adhesively and removably attached to the printing medium in a manner which will allow the obscuring medium to pass through the facsimile machine in combination with the printing medium The adhesive is a permanently tacky base adhesive into which is mixed a dispersion of fine particles, preferably polytetrafluoroethylene spheroids, which have the effect of reducing adhesive build. The preferred base adhesive is a plasticized blend of a vinyl acetate copolymer emulsion and an ethylene-vinyl acetate copolymer emulsion.
摘要翻译： 一种用于在其上打印图像以通过标准传真机的打印机形成文档的打印介质，使得该文档不可读到临时观察者。 存在可由传真机接收的柔性打印介质的条带以及粘着地和可移除地附着到打印介质上的模糊介质条，其方式将允许模糊介质与打印机一起通过传真机 介质粘合剂是一种永久粘性的基础粘合剂，其中混合了细颗粒的分散体，优选聚四氟乙烯球体，其具有减少粘合剂构造的作用。 优选的基础粘合剂是乙酸乙烯酯共聚物乳液和乙烯 - 乙酸乙烯酯共聚物乳液的增塑共混物。
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