Patent ID: 11884773
Assignee: KUKDO CHEMICAL CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC B  C  H

Claim 1:
2. A method for producing the phenolic resin according to claim 1, the method comprising:
reacting dicyclopentadiene, in a ratio of 0.28 to 1 times by mol, or in a case where dicyclopentadiene is sequentially added in separate stages and reacted, an overall ratio thereof of 0.8 to 2 times by mol and a ratio of dicyclopentadiene used at each stage of 0.28 to 1 times by mol, with 2,6-disubstituted phenols represented by formula (3), at a temperature of 50 to 200° C., in the presence of a Lewis acid at a temperature of 50° C. to 200° C.,, in the formula, R1's each independently represent a hydrocarbon group having 1 to 8 carbon atoms.