| 摘要 |
PROBLEM TO BE SOLVED: To provide a resol-type phenolic resin having the affinity to hydrophobic organic materials and giving a molded article having excellent heat-resistance, mechanical strength and sliding property. SOLUTION: The resol-type phenolic resin is synthesized by using phenols and formaldehydes in the presence of an amine as a catalyst and has a bisphenol A molar ratio of 50-100% in the phenols, a number-average molecular weight of 500-1,000 measured by GPC and a dispersion degree (Mw/Mn) of 2.5-15. COPYRIGHT: (C)2009,JPO&INPIT
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