1,3-Propanediol → HCID 131716352, compound

HRID 2219994Notes

Reaction equation

HRID 2219994 reaction equation
[CH3:1][C@@H:2]1[O:9][C:7](=[O:8])[C@H:6]([CH3:10])[O:5][C:3]1=[O:4].[C:11]1(=[O:17])[O:16][CH2:15][CH2:14][CH2:13][O:12]1.C(O)CCO>>[CH3:1][C@@H:2]1[O:9][C:7](=[O:8])[C@H:6]([CH3:10])[O:5][C:3]1=[O:4].[C:11]1(=[O:17])[O:16][CH2:15][CH2:14][CH2:13][O:12]1

Participants

4

Reactant 3

HCID 104421,3-PropanediolHCID 107983Lactide, L-HCID 123834Trimethylene carbonate

Product 1

HCID 131716352HCID 131716352, compound

Procedure

The copolymer (Co—P4) was prepared following the teaching of U.S. Pat. No. 6,342,065 by the two-step copolymerization of l-lactide with trimethylene carbonate in the presence of 1,3-propanediol and stannous octanoate as the initiator and catalyst, respectively. The polymer was isolated, ground, dried, and heated above 80° C. under reduced pressure to remove residual monomer. The polymer was characterized for identity (IR), thermal properties (DSC), and molecular weight by GPC (CH2Cl2). The polymer was shown to have a Tm=166° C. and Mw=160 kDa. The copolymer was then compression molded into a 0.1 mm-thick film at 180° C.

Workup

  1. customThe copolymer (Co—P4) was prepared
  2. customThe polymer was isolated
  3. customground, dried
  4. temperatureheated above 80° C. under reduced pressure
  5. customto remove residual monomer
  6. customa Tm=166° C. and Mw=160 kDa
  7. customat 180° C.

Sources & evidence

ORD record
ord-cea2d554213747e394eabace109cee7c
Source dataset
uspto-grants-2008_08
Patent number
US07416559B2

Reaction notes

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