NON-LEACHING ADHESIVE SYSTEM AND ITS USE IN LIQUID IMMERSION OBJECTIVE

摘要

PROBLEM TO BE SOLVED: To provide a non-leaching adhesive system and its use in a liquid immersion objective.;SOLUTION: The non-leaching adhesive system and its use in the liquid immersion objective for immersion-writing of masters for optical discs are disclosed. The non-leaching adhesive system comprises at least one monomer selected from the group comprising acrylate and methacrylate monomers, allylic monomers, norbornene monomers, hybrid monomers thereof containing chemically-different polymerizable groups, and multifunctional thiol monomers on condition that the thiol monomer is used in combination with at least one of these non-thiol monomers, and a polymerization initiator. At least one of these monomers except the thiol monomers has at least two functional polymerizable groups in order to obtain a cross-linked polymer network. The polymerization initiator can preferably be activated by both of heat and UV radiation. The non-leaching adhesive system may further contain a reactive diluent. Further, the use of the non-leaching adhesive system in mounting the liquid immersion objective is disclosed.;COPYRIGHT: (C)2012,JPO&INPIT