| 摘要 |
PROBLEM TO BE SOLVED: To provide an index composition with which an insertion portion of an endoscope is coated or printed and cured and which obviates the occurrence of yellowing, cracking, deteriorating by curing and peeling and makes the insertion of the insertion portion of the endoscope into a celom possible. SOLUTION: This index composition includes coloring pigments, a binder consisting of a fluorine-contained copolymer, a liquid plasticizer, a solvent for preparing a chief material of ink by being mixed together with the pigments, the binder and the plasticizer and an isocyanate hardener of a non-yellowing type which can cure the chief material of the ink by a two-part reaction. |
