Polyurethane composition for a watch band, band and watch

文件类型：PDF文档
文件大小：434K
[Problem] To provide a polyurethane composition which makes it possible to manufacture a watch band that is not readily degraded and can be used for a long time. Also to provide an environmentally-friendly polyurethane composition with which a waste product produced during injection molding can be reused to manufacture a watch band. [Solution] This polyurethane composition for a watch comprises the following : a polyurethane component (A) comprising specific quantities of a specific structural unit (a1) derived from diisocyanate, a specific structural unit (a2-1) derived from diol, and at least one species selected from specific structural units (a2-2) and (a2-3); and an additive (B) composed of an ultraviolet absorber (B1), a hindered phenol-based antioxidant (B2), a phosphorus-based stabilizer (B3), a hindered amine-based stabilizer (B4), and a carbodiimide-based re-binder (B5).