Patent ID: 7595074

Claim:
A method of preparing a phenolic polymer, comprising: a) protecting at least one hydroxyl group of a substituted or unsubstituted phenol represented by Structural Formula (XXIX): wherein: R 11 , R 12 , R 13 , R 14 and R 15 are independently —H, —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, a substituted or unsubstituted alkoxycarbonyl or aryloxycarbonyl group, a substituted or unsubstituted alkoxy group or a saturated or unsaturated carboxylic acid group; or R 11 , R 12 , R 13 , R 14 or R 15 in conjunction with an adjacent R 11 , R 12 , R 13 , R 14 or R 15 , forms a substituted or unsubstituted alkylenedioxy group; provided that at least one of R 11 , R 12 , R 13 , R 14 and R 15 is a tert-butyl group 1-ethenyl-2-carboxylic acid or ester thereof, a substituted or unsubstituted alkylene dioxy group or a substituted or unsubstituted n-alkoxycarbonyl group, at least one of R 11 , R 12 , R 13 , R 14 and R 15 is a hydroxyl group, and at least one of R 11 , R 12 , R 13 , R 14 and R 15 is —H; with a protecting group, wherein-thereby obtaining one or more protected hydroxyl groups; and b) polymerizing the substituted or unsubstituted phenol, thereby obtaining the phenolic polymer.