1,4 Butanediol (BDO) is a biodegradable grade with high melting point. It reacts with terephthalic acid to produce polybutylene terephthalate (PBT). It also reacts with adipic acid to yield polyesters with biodegradability characteristics. 1,4 Butanediol (BDO) produces polymers which exhibits greater hydrophobicity, crystallinity, strength, hydrolysis resistance and better low temperature flexibility than those produced from ethylene glycol.
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