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Phenol formaldehyde resins (PF), also called phenolic resins or phenoplasts, [1] are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Used as the basis for Bakelite , PFs were the first commercial synthetic resins.
Bakelite was produced for the first time in 1872 by Adolf von Baeyer, though its use as a commercial product was not considered at the time. [6]Leo Baekeland was already wealthy due to his invention of Velox photographic paper when he began to investigate the reactions of phenol and formaldehyde in his home laboratory.
Uses Date Phenol formaldehyde resins (PF), also called phenolic resins Resorcinol glue, Para tertiary butylphenol formaldehyde resin: synthetic resorcinol or similar is mixed with phenol to make a resin; cured by adding formaldehyde: offgasses phenol and formeldehyde phenol and formeldehyde are toxic, PTBPF causes contact allergies
Uses Bakelite: Phenol-formaldehyde resin: High electric, heat and chemical resistance: Insulation of wires, manufacturing sockets, electrical devices, brake pads, etc. Kevlar: Para-aramid fibre: High tensile strength: Manufacturing armour, sports and musical equipment. Used in the field of cryogenics: Twaron: Para-aramid: Heat resistant and ...
Phenol formaldehyde resin is commonly used for making waterproof plywood. It is cured at elevated temperature and pressure [10] and also available as a dry film to be sandwiched in between layers of veneer . The greenhouse gas emissions is 2.88 kg CO2-eq./kg of PF adhesive. [13]
Phenol-formaldehyde resins (PF) were the first commercially relevant impregnation resins, made by reacting phenol and formaldehyde, creating a polymer network inside of the wood upon curing. [7] Phenol can react with formaldehyde at the ortho and para positions, generating mono, di, and trimethylolphenol as the reaction products. [6]
Para tertiary butylphenol formaldehyde resin, also known as p-tert-butylphenol-formaldehyde resin (PTBP-FR), is a thermoplastic phenol-formaldehyde resin found in commercial adhesives, particularly glues used to bond leather and rubber. It has broad usage in a large variety of industries and can be found in many household textile products and ...
In approximate order of decreasing consumption, products generated from formaldehyde include urea formaldehyde resin, melamine resin, phenol formaldehyde resin, polyoxymethylene plastics, 1,4-butanediol, and methylene diphenyl diisocyanate. [40] The textile industry uses formaldehyde-based resins as finishers to make fabrics crease-resistant. [50]