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β-Butyrolactone is the intramolecular carboxylic acid ester (lactone) of the optically active 3-hydroxybutanoic acid. It is produced during chemical synthesis as a racemate. β-Butyrolactone is suitable as a monomer for the production of the biodegradable polyhydroxyalkanoate poly(3-hydroxybutyrate) (PHB). Polymerisation of racemic (RS)-β-butyrolactone provides (RS)-polyhydroxybutyric acid, which, however, is inferior in essential properties (e.g. strength or degradation behaviour) to the (R)-poly-3-hydroxybutyrate originating from natural sources.

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  • Β-Butyrolactone
  • Β-Butyrolacton
  • Β-Butyrolakton
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  • β-Butyrolakton je organická sloučenina, lakton odvozený od kyseliny beta-hydroxymáselné. Při jeho výrobě vzniká racemická směs. Používá se jako monomer biologicky rozložitelného plastu (PHB). Polymerizací racemického (RS)-β-butyrolaktonu vzniká polymer kyseliny (RS)-hydroxymáselné, který má ovšem horší vlastnosti (například odolnost vůči rozpadu) než přírodní (R)-poly-3-hydroxybutyrát.
  • β-Butyrolacton ist der intramolekulare Carbonsäureester (Lacton) der optisch aktiven 3-Hydroxybutansäure und fällt bei der chemischen Synthese als Racemat an. 3-Hydroxybuttersäure-β-lacton eignet sich als Monomer zur Herstellung des bioabbaubaren Polyhydroxyalkanoats (PHB). Polymerisation von racemischem (RS)-4-Methyl-2-oxetanon liefert (RS)-Polyhydroxybuttersäure, die allerdings in wesentlichen Eigenschaften, z. B. Festigkeit oder Abbauverhalten, dem aus natürlichen Quellen stammenden bakteriellen Reservestoff (R)-Poly-3-hydroxybutyrat unterlegen ist.
  • β-Butyrolactone is the intramolecular carboxylic acid ester (lactone) of the optically active 3-hydroxybutanoic acid. It is produced during chemical synthesis as a racemate. β-Butyrolactone is suitable as a monomer for the production of the biodegradable polyhydroxyalkanoate poly(3-hydroxybutyrate) (PHB). Polymerisation of racemic (RS)-β-butyrolactone provides (RS)-polyhydroxybutyric acid, which, however, is inferior in essential properties (e.g. strength or degradation behaviour) to the (R)-poly-3-hydroxybutyrate originating from natural sources.
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