| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin crosslinking agent having a softening point lower than a crosslinking reaction temperature of a rubber, good dispersibility into the rubber, good blocking resistance and a reduced residual amount of an alkylphenol being a raw material. SOLUTION: This resin crosslinking agent comprises a resol-type alkylphenol-formaldehyde copolycondensated resin in which a residual amount of the alkylphenol being the raw material is less than 1.0%, and a 1-30 wt% oil, wherein the softening point of the resin crosslinking agent ranges 85-115°C. COPYRIGHT: (C)2006,JPO&NCIPI
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