Improved correction fluid for obscuring indicia on sheet material. Such fluid, which normally comprises a solution of pigmented thermoplastic resin, is rendered capable of obscuring typed, xerographically copied, or written ink indicia by using a solvent system having a refractive index of 1.410 or less. A preferred non-flammable system includes 20-40 volume percent 1,1,2-trichlorotrifluoroethane and correspondingly 80-60 volume percent heptane.
用于遮盖纸张材料上的标记的改进型涂改液。这种液体通常由着色热塑性
树脂溶液组成,通过使用折射率为 1.410 或更低的溶剂系统,可以遮盖打字、电传复印或书写的墨迹。首选的不易燃体系包括 20-40 体积百分比的
1,1,2-三氟乙烷和相应的 80-60 体积百分比的
庚烷。