| 摘要 |
PURPOSE:To provide a plastic substrate for a liquid crystal panel which has excellent surface smoothness, is colorless and transparent, has resistance to >=120 deg.Ctemp., low moisture and vapor permeability and absorptivity, has no optical rotatory power, has good adhesion and maintains airtightness by using an epoxy- butadiene copolymer or a mixed resin. CONSTITUTION:An epoxy-polybutadiene copolymer as a plastic substrate has heat resistance, low water permeability, water resistance and elasticity. This copolymer is polymerized and cured by a normal epoxy hardener (amine, polyamide, imidazole, acid anhydride, etc.) and is made into a film. The copolymer may be mixed with a normal epoxy resin, glycidyl ethers, phenoxy resin, etc. There are various methods of filming the copolymer, among which the methods of adding the epoxy-polybutadiene resin and a hardener or suitably a solvent onto a smooth release film and polymerizing the same, that is, a solvent casting method is preferred. |
