Английская Википедия:4,4'-Dichlorodiphenyl sulfone
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4,4′-Dichlorodiphenyl sulfone (DCDPS) is an organic compound with the formula (ClC6H4)2SO2. Classified as a sulfone,[1] this white solid is most commonly used as a precursor to polymers that are rigid and temperature-resistant such as PES or Udel.[2]
Synthesis and reactions
DCDPS is synthesized via sulfonation of chlorobenzene with sulfuric acid, often in the presence of various additives to optimize the formation of the 4,4′-isomer:
- ClC6H5 + SO3 → (ClC6H4)2SO2 + H2O
It can also be produced by chlorination of diphenylsulfone.[3]
With chloride substituents activated toward substitution, DCDPS is useful in the production of polysulfones:
- n (ClC6H4)2SO2 + n NaO−X−ONa → [(O−X−OC6H4)2SO2]n + 2n NaCl
Further reading
- Шаблон:Cite journal
- Шаблон:Cite report
- Radel PPSU, Veradel PESU and Acudel modified PPSU Design Guide by Solvay
References