RESINOUS CROSSLINKING AGENTS AND RUBBERS CROSSLINKED WITH THE RESINOUS CROSSLINKING AGENTS

摘要

Resinous crosslinking agents with which rubbers can be crosslinked at a higher rate than with conventional resinous crosslinking agents without using a crosslinking accelerator causative of corrosion. One of the resinous crosslinking agents comprises a mixture of a resol type phenol/formaldehyde co-condensation resin and a novolak type phenolic/formaldehyde co-condensation resin. The other resinous crosslinking agent comprises a resol resin obtained through the co-condensation of a p-alkylphenol compound, a phenol compound not having a substituent in the para-position, and formaldehyde.