Synthesis and 13C NMR characterization o
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Luigi Abis; Riccardo Po; Giuliana Schimperna; Edoardo Merlo
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Article
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1994
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John Wiley and Sons
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English
β 553 KB
## Abstract Copolyesters of terephthalic acid, __p__βhydroxybenzoic acid and ethylene glycol were prepared by highβtemperature melt polycondensation, starting from different hydroxybenzoic acid derivatives. Methyl __p__βhydroxybenzoate monomers having the hydroxyl either free, etherified with ethyl