| abstract |
A resin composition having improved mechanical strength, hardness, and low heat generation property (low fuel consumption property) is developed, and when the same is used particularly in a rubber composition, a rubber composition that has a low tan δ (loss tangent) around 60° C., an improved E′ (storage elastic modulus), and a reduced load on the environment is provided. A resin composition containing a lignin derivative (A), as well as either a modified novolac type phenol resin (B) or a cashew resin (B′), is provided. In one or a plurality of embodiments, the modified novolac type phenol resin (B) has a softening point of 150° C. or lower, and the modified novolac type phenol resin (B) is obtained by modification with a plant-derived compound. |