Antistatic laminated polyester film
US7211309B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Mar 24, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.