| 摘要 |
<p>The present invention is related to a stain resistant polycarbonate panel which preferably comprises co-extruded polycarbonate sheet and an adherent layer based on linear polycarbonate resin which contains an additive conforming to <IMAGE> wherein R1 and R2 independent of each other are a hydrogen or a halogen atom, a C1-C12 alkoxy, C7-C18 arylalkoxy or a C1-C10 alkyl, cycloalkyl, arylalkyl or an aryl radical and R3 and R4 independent of each other are a hydrogen atom, a C1-C10 alkyl, cycloalkyl, arylalkyl or an aryl radical, n is an integer of 0-4 and m is an integer of 1 to 3, -Bridge- is either <IMAGE> where p is 0-3, q is 1-10, Y denotes any of <IMAGE> +TR <IMAGE> and R3 and R4 independently denote a hydrogen atom a C1-C10 alkyl, cycloalkyl, arylalkyl or an aryl radical characterized in that said adherent layer is about 5 to 100 microns in thickness and in that only one of its surfaces is bonded.</p> |
