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Bisphenol A is difunctional and used to produce epoxy resin and polycarbonate. 4-tert-Butylphenol is monofunctional and so in polymer science terms, bisphenol A is a polymer chain extender but 4-tert-butylphenol is a chain stopper or sometimes called endcapper. It is thus use to control molecular weight by limiting chain growth.
2,4-Di-tert-butylphenol (2,4-DTBP) is a white solid with a phenolic odour. It is primarily used as a raw material for the production of several commercially important antioxidants and phenolic benzotriazole -type UV absorbers .
HOC 6 H 4 CH 2 OH + HOC 6 H 5 → (HOC 6 H 4) 2 CH 2 + H 2 O 2 HOC 6 H 4 CH 2 OH → (HOC 6 H 4 CH 2) 2 O + H 2 O. The diphenol (HOC 6 H 4) 2 CH 2 (sometimes called a "dimer") is called bisphenol F, which is an important monomer in the production of epoxy resins. Bisphenol-F can further link generating tri- and tetra-and higher phenol oligomers.
Of particular note is methyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate (CAS# 6386-38-5), which is formed by the Michael addition of methyl acrylate. This compound is used as a feedstock in the synthesis of more complex antioxidants such as Irganox 1098 . 2,6-Di- tert -butylphenol is also used in the synthesis of CGP-7930 , probucol , and ...
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The cyclohexadienones, also referred to in the literature as Chinolether, cleave the 4-position tert-butyl group upon heating under acidic conditions and aromatizes back to the substituted phenol. The reaction can be used for the synthesis of 2,6-di- tert -butyl-4-methoxyphenol, which is frequently used as an antioxidant.
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