| 摘要 |
PROBLEM TO BE SOLVED: To provide a displacement preventive coating agent capable of preventing displacement when processing a lens, and presenting an appearance being water soluble and at least transparent after hardening.SOLUTION: A displacement preventive coating agent is provided for coating on obverse-reverse surfaces of a lens for preventing displacement of a holding position of the obverse-reverse surfaces of the lens held by a chuck device, for example, when formed in a shape corresponding to a frame by cutting-processing the nonuniform edge of the lens formed as a film by a water repellent coat layer, and is composed of an aqueous solution mainly composed of a hydrophilic resin, a surface active agent having a perfluoro group and an emulsion, and presents a transparent appearance at least after forming a film. According to such a displacement preventive coating agent, the holding position held by a pressure sensitive adhesive tape of the lens is hardly displaced, for example, when processing this lens by using when sandwiching and holding the obverse-reverse surfaces of the lens such as being formed as the film by the water repellent coat layer by the chuck device of sticking the pressure sensitive adhesive tape. |
