Trimethylene carbonate
Cas: 2453-03-4
Molecular Formula: C4H6O3
Purity：>99%
Molecular Weight: 102.09 g/mol
Chemical Names: 1,3-Dioxan-2-one
Form: crystals
Minimal order quantity: 200 gram
Trimethylene carbonate is the monomer of PTMC. It is mainly used to synthesizes PTMC and other copolymers, such as PTMC-LA. There are widely used in the surgical suture, drug controlled release material and other application.
Trimethylene carbonate is easy to homopolymerize and copolymerize, and the initiator has a wide selection range. It can be used as anionic, cationic, and coordination initiators for ring-opening polymerization. In addition, enzymes can also be used to initiate polymerization.
The use of cationic initiators is prone to decarboxylation due to the transition state of cationic ions. As a result, ether bonds are introduced into the main chain of the polymer. Among all polymerization systems, coordination polymerization is ideal, and high-yield, high-molecular-weight polymers can be obtained.
The most commonly used is the reaction of 1,3-propylene glycol and diethyl carbonate to form trimethylene carbonate. Remove the solvent and excess diethyl carbonate under reduced pressure, add p-toluenesulfonic acid to the residue, distill under reduced pressure for one hour, add tin powder, and distill under reduced pressure to collect the fractions and obtain a white solid after cooling.
The crude product was recrystallized with a mixed solvent of THF-ether to obtain a white solid
| Item | Value |
| Melt point | 45-47℃ |
| Water content | ≤0.4% |
| Heavy metal content | ≤5ppm |
| Acid content | ≤0.1% |
| Ash Content | ≤0.05% |
| Purity | ≥99.5% |