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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP23051587ApriorityCriticalpatent/JPS6474212A/en
Publication of JPS6474212ApublicationCriticalpatent/JPS6474212A/en
PURPOSE:To improve the flexibility, impact resistance, crack resistance and dimensional stability of a phenol resin, by modifying it with a glycidyl compd. CONSTITUTION:When the numbers of moles of phenol, formaldehyde and a glycidyl compd. are represented by P, F and G, respectively, they are mixed with a compounding quantity which satisfies G/P=0.001-5.8F/¦P-G¦ are reacted at 95-125 deg.C for about 60-600min to obtain a solid phenol resin modified with the glycidyl compd.
Precatalyzed catalyst compositions, process for preparing epoxy resins, curable compositions, articles resulting from curing the resultant compositions