| 摘要 |
PURPOSE:To produce the titled composition giving a molded article having improved heat-resistance without generating gas during molding, by using a resol-type phenolic resin wherein phenols and aldehydes are bonded with each other in a high-ortho form, and modifying the phenolic resin with boric acid, etc. CONSTITUTION:A phenolic compound is made to react with an aldehyde in the presence of a bivalent metal hydroxide (e.g. magnesium hydroxide) as a catalyst to obtain a resol-type phenolic resin wherein the molar ratio of the aldehyde bonded to phenol is 1.0-2.0, and the ratio of ortho-bond to para-bond is >=1.5. The objective composition can be produced by reacting the phenolic hydroxyl group of the phenolic resin with 0.15-0.5mol of boric acid or 0.075-0.25mol of boron oxide.
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