Phenol-formaldehyde resins, as a group, are formed by a step-growth polymerization reaction that can be either acid- or base-catalysed. Since formaldehyde exists predominantly in solution as a … Meer weergeven

Base-catalysed phenol-formaldehyde resins are made with a formaldehyde to phenol ratio of greater than one (usually around 1.5). These resins are called resoles. … Meer weergeven

Phenolic resins are found in myriad industrial products. Phenolic laminates are made by impregnating one or more layers of a … Meer weergeven

Phenol-formaldehyde is degraded by the white rot fungus Phanerochaete chrysosporium. Meer weergeven

Novolaks (or novolacs) are phenol-formaldehyde resins with a formaldehyde to phenol molar ratio of less than one. In place of phenol itself, they are often produced from cresols (methylphenols). The polymerization is brought to completion … Meer weergeven

When the molar ratio of formaldehyde:phenol reaches one, in theory every phenol is linked together via methylene bridges, generating one single molecule, and … Meer weergeven

• Bakelite was originally made from phenolic resin and wood flour.
• Ebonol is a paper-filled phenolic resin designed as a replacement for ebony wood in stringed and woodwind instruments.
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