polymer are summarized in table ii glycolide 53 2 g 0 46 moles 1 lactide 130 8 g 0 91 moles peg 8000 16 0 g and stannous octoate 0 05 ml 1 56 u00d7 10 4 moles are combined and allowed to polymerize by the procedure described in example 15 the properties of this polymer are summarized in table ii l lactide 88 0 g 0 61 moles trimethylene carbonate 96 0 g 0 94 moles peg 8000 16 0 g and stannous octoate 0 31 ml 9 74 u00d7 10 4 moles are combined and allowed to polymerize by the procedure described in example 15 the properties of this polymer are summarized in table ii dl lactide 25 0 g 0 17 moles glycolide 25 0 g 0 21 moles peg 20 000 50 0 g and stannous octoate 0 16 ml 4 94 u00d7 10 4 moles are combined and allowed to polymerize by the procedure described in example 2 the properties of this polymer are described in table ii table ii__________________________________________________________________________terpolymers with peo midblocks and various endblocks composition by u03b7 sub inh solvent sup 1 h nmr wt charged as asexamplecomposition peg mw polymerized reprecipitated polymerized reprecipitated tg tm__________________________________________________________________________18 gly dl lactide 8 000 0 49 chcl sub 3 0 35 chcl sub 3 36 54 10 36 54 10 peo 36 54 1019 gly l lactide.