| 摘要 |
PURPOSE:To prevent remarkably an appearance of a tyre from deteriorating by uniformly coating the surface of the tyre in a specified thickness with a silicone oil whose principal constituent is dimethyl siloxiane having a specified volatile loss in quantity and viscosity. CONSTITUTION:A surface of a tyre is uniformly coated in a thickness of 5- 20mum with a silicone oil whose principal constituent is dimethyl siloxiane having a volatile loss in quantity of less than 2% and a viscosity of at least 1,000 centistokes at 25 deg.C. In this case, the surface of the tyre is preferably coated with a W/O-type emulsion in which the silicone oil is, for example, emulsified by an emulsifier. This results in the prevention of deterioration in an appearance of the tyre particularly induced by discoloration due to blooming of an amine-type antioxidant, a paraffinic wax and the like during a storage of the tyre for a long period of time. |
