反应详情

Methacryloyl chloride was reacted with p-hydroxy benzoic acid that had been neutralised with NaOH solution to give sodium methacryloyl-oxy-benzoate in about 50% yield. Treatment with hydrochloric acid gave methacryloyl-oxy-benzoic acid which was purified by re-crystallisation from glacial acetic acid, ethanol and acetone respectively. The acid was polymerised at 90° C. in dimethyl formamide solution in a sealed degassed ampoule using benzoyl peroxide as initiator. This gave PMBA which was separated from residual monomer by dissolving the latter in diethyl ether.