Process for the production of condensation products

摘要

Styrene is reacted with an ester of sulphuric or chlorsulphonic acid to form condensation products which are believed to be high molecular weight polystyrene sulphonic acid esters. The reaction is strongly exothermic and the styrene (which may be admixed with glacial acetic acid or a higher fatty acid) is preferably added dropwise to the mixture. The products may be saponified using hot water to form water-soluble sulphonic acids which form salts on treatment with alkali metal or ammonium hydroxide the condensation products may also be salted out using sodium or ammonium chloride. If more than five mols. of styrene are used to one mol. of ester the products are more electrolyte-sensitive and less water-soluble.ALSO:Styrene is reacted with an ester of sulphuric or chlorsulphonic acid to form condensation products which are believed to be high molecular weight polystyrene sulphonic acid esters. Examples specify the use of dimethyl sulphate and methyl or ethyl chlorsulphonate with styrene or a -methyl styrene. The reaction is strongly exothermic so that styrene (which may be admixed with glacial acetic acid) is preferably added dropwise to the mixture.