| 摘要 |
<p>PURPOSE: To enable the instruction of selection by contacting with a desired position on a CRT screen by forming an optical waveguide and a coating layer of respectively specific materials. CONSTITUTION: This optical waveguide consists of a transparent resin reinforced polyorganosiloxane elastomer layer (A) having >=2.5mm thickness and coatings (B) applied on at least one of the two parallel main surfaces of the layer A. The layer A has hardness from the graduation 0 of a Shore 00 hardness meter to the graduation 10 of a Shore A hardness meter and is formed by bringing a compsn. composed of prescribed liquid polydiorganosiloxane, crosslinking agent, Prescribed benzene-soluble copolymer and platinum-contg. hydrosilane catalyst into reaction. The coatings B are formed of the materials selected from prescribed polyurethane, polyorganosiloxane and prescribed block copolymer. Further, the resistance of the resulted optical waveguide surface to destruction and the compressive recovery rate thereof are respectively specified.</p> |
