Formaldehyde-o-cresol-p-cresol copolymer Formaldehyde, polymer with 2-methylphenol and 4-methylphenol o-Cresol-p-cresol-formaldehyde copolymer o-Cresol-p-cresol-formaldehyde polymer p-Cresol-o-cresol-formaldehyde copolymer Phenol, 2-methyl-, polymer with formaldehyde and 4-methylphenol Phenol, 4-methyl-, polymer with formaldehyde and 2-methylphenol