Laminate forming a phenolic resin, the production method of the phenolic resin laminates formed and phenolic resin laminate

摘要

PROBLEM TO BE SOLVED: To provide a phenolic resin for forming a laminate which can simultaneously improve the heat resistance, processability, flame retardance, and insulation properties of the phenolic resin laminate.;SOLUTION: By allowing the phenolic resin to have a weight average molecular weight of ≥1,000, the flexibility and toughness of the phenolic resin laminate to be manufactured from the phenolic resin are improved. Further, by rendering the weight average molecular weight of ≤5,000, and simultaneously rendering the total amount of molecules having a molecular weight of 300-500 not less than 15 wt.%, the distribution amount of low molecular weight components is secured, and when a substrate such as a paper substrate is impregnated with the phenolic resin composition, good impregnation properties are secured. Thereby, heat resistance, flame retardance and insulation properties are improved.;COPYRIGHT: (C)2004,JPO