| 摘要 |
<p>A process oil has properties (a) to (c) below:(a) an ultraviolet absorbance (198 nm) of 3 or less; (b) an ultraviolet absorbance (228 nm) of 1 or less; and (c) a kinematic viscosity at 40 degrees C in a range of 25 mm 2 /s to 450 mm 2 /s. According to the rubber composition using the process oil, a rubber product having an excellent weather resistance and being unlikely to cause a shape change such as deformation can be manufactured.</p> |
