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

Claim 0:
1. A phenolic resin represented by General Formula (1) below:, in the formula, R1's each independently represent a hydrocarbon group having 1 to 8 carbon atoms; R2's each independently represent a hydrogen atom, Formula (1a), or Formula (1b) below, where at least one of R2's is Formula (1a) or Formula (1b); and n represents the number of repetitions, where an average value thereof is a number of 0 to 5,, wherein the resin is obtained by 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.,, , wherein R1 is as defined in General Formula (1),
and wherein the resin has a peak near 3040 cm−1 in FT-IR measurement.