반응 #948361
ord-8f1d92909dec437aa1de88769f191703
반응 조건
상세 조건
See reaction.notes.procedure_details.
후처리
- 1기타is devolatilized at 110° C. under high vacuum
- 2기타to be -6° C. and 54° C.
실험 절차
The procedure described in Example 2 is substantially reproduced with 45.66 gm (0.40 mole) of ε-caprolactone, 63.84 gm (0.55 mole) of glycolide, 5.10 gm (0.05 mole) of p-dioxanone, 0.114 ml (1.20 mmole/mole of total monomer) of distilled diethylene glycol and 0.0673 ml stannous octoate (0.33 molar solution is toluene). A weight loss of 1.6% is observed when the polymer is devolatilized at 110° C. under high vacuum. The I.V. of the copolymer is 1.51 dl/g in HFIP and the mole ratio of PCL/PGA/PDS is found to be 38.5/56.2/5.4 by NMR. The glass transition temperature (Tg) and the melting point (Tm) of this copolymer are found to be -6° C. and 54° C., respectively, by DSC.