| 摘要 |
PURPOSE:To provide a soln. for erasing a photosensitive lithographic printing plate good in coating performance with a writing brush, etc., and small in blooding when it is so low in viscosity as usable by filling a felt pen type vessel with it, by incorporating a fluorinated surfactant. CONSTITUTION:A soln. for aersing a photosensitive lithographic plate contains a fluorinated surfactant, preferably, an inionic or nonionic one, but especially preferably, a nonionic one, such as a fluoroaliphatic oligomer having fluoroaliphatic groups and polyoxyalkylene groups represented by generatl formula I or II in which Rf is a fluoroaliphatic group; OR is polyoxyalkylene group; Q is a linking group for connecting both Rf and OR; A is a univalent terminal group; A' is A or a simple bonding group under the conditions that at least one of R combined with Q links to another Q; and Q' is a bonding group for covalently bonding A or A' with R. |
