| abstract |
Kind Code: A1 A novel cocondensate that can be used as a substitute for p-tert-octylphenol and p-nonylphenol, has a softening point lower than the maximum temperature in a rubber processing step, and is excellent in dispersibility in rubber is blended. Providing a rubber composition. A rubber component (A), zinc oxide (B), a structural unit derived from p-tert-butylphenol represented by formula (1), and derived from o-phenylphenol represented by formula (2). A rubber composition comprising a structural unit and a co-condensate (C) having a softening point of 150 ° C. or lower including a structural unit derived from resorcin represented by the formula (3). [Selection figure] None |