[C:1]1(=[O:8])[O:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH2:9]1[O:16][C:14](=[O:15])[CH2:13][O:12][C:10]1=[O:11].C(O)CCCCCCCCCCC.CCCCC(C([O-])=O)CC.CCCCC(C([O-])=O)CC.[Sn+2]>C(Cl)(Cl)Cl>[C:1]1(=[O:8])[O:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH2:9]1[O:16][C:14](=[O:15])[CH2:13][O:12][C:10]1=[O:11]ε-Caprolactone (170 g, 1.49 mole), glycolide (30 g, 0.26 mole), lauryl alcohol (1.37 g, 7.3×10-3 mole) and stannous octoate (0.052 g, 1.2×10-4 mole) were combined in a stirred reactor under nitrogen at 180° C. The mixture was stirred at 180° C. for 4.5 hours. The resulting polymer had an inherent viscosity of 0.68 dl/g (0.5 g/dl in CHCl3). The composition was determined by 1H NMR to be 85 wt. % ε-caprilactone and 15 wt. % glycolide.
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