FIELD: polymers.
SUBSTANCE: invention relates to method for production of polyesters having several free acid functions in the middle of chain and based on cyclic esters such as lactides and glycosides. Disclosed is production of abovementioned polyesters by ring opening polymerization in presence of chain initiator, namely tartaric acid benzyl diester, having optionally substituted phenyl radical; and removing of protective group from carboxylic functions of chain initiator.
EFFECT: improved method for polyester production.
4 cl, 12 ex, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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