Antistatic article, method of making the same, and display device having the same

摘要

An antistatic article having an antistatic layer disposed on a substrate is disclosed herein. The antistatic layer is formed from a cationic copolymer, a non-cationic (meth)acrylic polymer, and a crosslinking agent. The cationic copolymer consists essentially of a cationic monomer, a hydrophobic monomer, a crosslinkable monomer, and an optional nitrogen-containing monomer. The substrate may comprise an optical film such as a multilayer optical film. Methods for making the antistatic article and display devices containing the antistatic article are also disclosed.

主权项

1. An article comprising:
A) a substrate; and B) an antistatic layer disposed on the substrate, the antistatic layer comprising:
a) a cationic copolymer consisting essentially of:
i) from about 20 to about 50 wt % of a cationic monomer having the formula:
CH2═CR1COZ(CH2)nN(R2)3XwhereinZ is O, S, or NH;R1 is H or CH3;R2 independently comprises an alkyl group having from 1 to 4 carbon atoms;X is an anion selected from the group consisting of halogen, nitrate, alkylsulfate, alkanesulfonate, and haloalkanesulfonate; andn=2 to 6; andii) from about 10 to about 75 wt % of a hydrophobic monomer comprising an aliphatic alkyl (meth)acrylate monomer having a hydrocarbon group of from 1 to 12 carbon atoms;iii) from about 0.5 to about 55 wt % of a nitrogen-containing monomer selected from N-vinylpyrrolidinone, N,N-dimethylaminoethyl (meth)acrylate, or a combination thereof; with the proviso that the amount of cationic monomer and nitrogen-containing monomer is less than about 70 wt %; andiv) from about 2 to about 25 wt % of a crosslinkable monomer comprising (meth)acrylic acid or a monomer having the formula:
CH2═CR3YwhereinR3 is H or CH3; andY is selected from the group consisting of CO2M, L-CO2M, L-OH, and CONH2, wherein M is H or a counterion, and L is a divalent linking group comprising alkylene, arylene, heteroalkylene, ether, carbonyl, ester, amido, or sulfonamido functionality, or a combination thereof;b) a non-cationic (meth)acrylic polymer which comprises no monomer with —OH or —CO2H functional groups; andc) a crosslinking agent selected from the group consisting of melamine-formaldehyde, urea-formaldehyde, glycoluril-formaldehyde, aziridine, carbodiimide, isocyanate, and epoxy crosslinkers.