| 摘要 |
The present invention provides a process for producing surface-modified rubber that is useful as a recycled material having characteristics inherent in vulcanized rubber, wherein the surface-modified rubber is obtained in such a manner that waste vulcanized rubber resulting from scrap tires and so on is dipped in a silane-coupling agent diluted with a solvent to improve the adhesiveness of the rubber surface. Such a silane-coupling agent preferably has a mercapto group or an S-S bond and is used in such a manner that the agent is diluted so as to have a content of 0.5 to 5%. Furthermore, the present invention provides a process for producing surface-modified rubber, obtained by modifying the surface of vulcanized rubber by corona discharge treatment or the like, having a contact angle of 80 degrees or less. In this process, it is preferable that the vulcanized rubber is further treated with a silane-coupling agent.
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