HIGHLY CHEMICAL-RESISTANT ANTICLOUDING OPTICAL ELEMENT

摘要

PURPOSE: To produce an optical element having chemical resistance and anticlouding property. ;CONSTITUTION: A polymer contg. ≥98.0wt.% polymer component, wherein 40.0-70.0wt.% consists of a transparent polystyrene resin having 250,000-500,000 weight average mol.wt. and added with 1.0-10.0wt.% nonionic surfactant is used to form an optical element by injection molding. The surface of the optical element is made hydrophilic and provided with an anticlouding property due to the surfactant. The element is resistant to chemicals because the polymer has a high degree of polymerization.;COPYRIGHT: (C)1996,JPO