Patent ID: 6906226

Claim:
Hydroxymethyl-substituted polyfunctional phenols, expressed by the following structure: General structure (I) (wherein X represents bivalent group (a) expressed by the following structure: General structure (II) (wherein R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom or an alkyl group with a carbon atom number of 1 through 4); quadrivalent group (b) expressed by the following structure: General structure (III) (wherein R 5 and R 6 each independently represent a hydrogen atom or an alkyl group with a carbon atom number of 1 through 4); or bivalent group (c) expressed by the following structure: General structure (IV) (wherein R 7 and R 8 each independently represent a hydrogen atom or a monofluoromethyl, difluoromethyl or trifluoromethyl group; however, R 7 and R 8 cannot be both hydrogen atoms); wherein n takes 2 when X is bivalent group (a), takes 4 when X is quadrivalent group (b), or takes 2 when X is bivalent group (c)).