Phenoxy resin composition for transparent plastic substrate and transparent plastic substrate using the same

Abstract

Provided are a phenoxy resin composition for transparent plastic substrate and a transparent plastic substrate using the phenoxy resin composition, capable of effectively substituting for a conventional glass substrate since having excellent thermal and chemical resistance, high adhesiveness, low water infiltration, and a small coefficient of linear thermal expansion. In one general aspect, there is provided a phenoxy resin composition for transparent plastic substrate, including: phenoxy resin having a chemical structure expressed as follows: wherein the n value is 35 to 400.

1 . A phenoxy resin composition for transparent plastic substrate, comprising phenoxy resin having Chemical Formula (I): 
       
         
           
           
               
               
           
         
       
     
     
         2 . The phenoxy resin composition of  claim 1 , wherein in the chemical structure of the phenoxy resin, the n value is from 35 to 400, inclusive. 
     
     
         3 . The phenoxy resin composition of  claim 1 , further comprising at least one selected from Bisphenol-A phenoxy, Bisphenol-A/Bisphenol-F phenoxy, Brominated phenoxy, phosphorous phenoxy, Bisphenol-A/Bisphenol-S phenoxy, Caprolactone modified phenoxy, and Siloxane modified phenoxy. 
     
     
         4 . The phenoxy resin composition of  claim 1 , wherein a weight-average molecular weight of the phenoxy resin is from about 1,000 to about 100,000. 
     
     
         5 . The phenoxy resin composition of  claim 1 , wherein an end of the phenoxy resin comprises at least one selected from an epoxy group, a hydroxyl group, an amine group, a fluorine group, a siloxane group, and an amide group. 
     
     
         6 . The phenoxy resin composition of  claim 1 , further comprising energy-ray curable acrylic oligomer or acrylic polymer resin. 
     
     
         7 . The phenoxy resin composition of  claim 1 , further comprising at least one photoinitiator selected from benzophenon, acetophenon, dibenzyl, diacetyl, diphenyl sulfide, and azobisisobutyronitrile. 
     
     
         8 . The phenoxy resin composition of  claim 1 , further comprising at least one crosslinking agent selected from the phenoxy resin among melamine, urea-formaldehyde, isocyanate functional prepolymer, a phenolic curing agent, and an amino-group curing agent. 
     
     
         9 . A material for transparent plastic substrate using the phenoxy resin composition for transparent plastic substrate of  claim 1 , wherein the material for transparent plastic substrate is formed by processing the phenoxy resin composition in the form of a film or sheet having a thickness of from about 25 to about 1,000 microns through a solvent casting method or a melt extrusion method. 
     
     
         10 . The material for transparent plastic substrate of  claim 9 , wherein the material is used to fabricate a flexible plastic substrate capable of substituting for a glass substrate used in an optical device substrate or a Flat Panel Display (FPD) substrate, a color filter substrate, a substrate for touch screen panel, or a substrate for solar cell. 
     
     
         11 . The material for transparent plastic substrate of  claim 10 , wherein the glass substrate used in an optical device substrate or a FPD substrate is a Thin Film Transistor (TFT) substrate for LCD or organic EL display. 
     
     
         12 . The material for transparent plastic substrate using the phenoxy resin composition for transparent plastic substrate of  claim 1 , wherein the phenoxy resin composition is applied as a thin or thick film having a thickness of from about 0.1 to about 500 microns on a polymer material. 
     
     
         13 . The material for transparent plastic substrate of  claim 11 , being used to fabricate a flexible plastic substrate capable of substituting for a glass substrate used in an optical device substrate or a FPD substrate, a color filter substrate, a substrate for touch screen panel, or a substrate for solar cell. 
     
     
         14 . The material for transparent plastic substrate of  claim 13 , wherein the glass substrate used in an optical device substrate or a FPD substrate is a TFT substrate for LCD or organic EL display.