Antistatic laminated polyester film

摘要

An antistatic film having an antistatic coating film on at least one surface of a polyester film, the antistatic coating film comprising a polymer having a polymerized unit represented by the following formula (1): wherein R¹ and R² each independently represent a hydrogen atom or a methyl group, R³ represents an alkylene group having 2 to 10 carbon atoms, R⁴ and R⁵ each independently represent an alkyl group having 1 to 5 carbon atoms, R⁶ represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group having 2 to 10 carbon atoms, and Y^- represents a halogen ion, a halogenated alkyl ion, a nitrate ion, a sulfate ion, an alkyl sulfate ion, a sulfonate ion or an alkyl sulfonate ion. The film is used in such applications requiring an antistatic property such as a protective film for a liquid crystal polarizing plate.