Itaconic acid → Lactic acid itaconic acid epsilon-caprolactone

Participants

Reaction Steps

Polymerisation was performed as in the Example 10, but the amounts of the ingredients were 113.6 g of aqueous L-lactic acid (71 mole-%), 12.3 g of itaconic acid (6 mole-%), 6.4 g of pentaerythritol (3 mole-%), 35.7 g of ε-caprolactone (20 mole-%) and 0.05 g of tin(II) octoate. Total polymerisation time was 17 hours. The product resin was sticky, elastic, rubbery, yellowish in colour and it was observed to crosslink by radicals.

Provenance & Evidence