| 摘要 |
PURPOSE:To provide a rubber composition having excellent processability in unvulcanized state and giving a vulcanized product having high hardness, by compounding a liquid phenolic compound having double bond on a side chain. CONSTITUTION:100pts.(wt.) of natural rubber, diene rubber, diene copolymer rubber,or their blended rubber is compounded with 1-50pts. of a liquid phenolic compound having double bond on a side chain. A phenolic compound existing in cashew oil is most effective. Preferably, the composition is further compounded with <=30pts. of a novolac phenolic resin and <=8pts. of morpholine disulfide. |
