ring-opening
2.RING OPENING POLYMERIZATION OF ε CAPROLACTONE BY BIS(ARYLOXO )LANTHANIDE(Ⅱ) COMPLEXES
3.Ring-opening Polymerization of Aliphatic Cyclic Esters by Using Organic Amino Calcium Catalyst
5.It is mainly synthesized by two chemical ways: ring-opening polymerization and direct polycondensation.
6.Glycidyl diethanolamine was synthesed from diethanolamine and cpichlorohydrin(ECH) evolving ring-opening and ring-closure reactions, and characterized by FTIR, MS and NMR.
7.PROGRESS IN ANIONIC RING-OPENING (Co)POLYMERIZATION OF 1,3,5-TRIMETHYL-1,3,5-TRIS (3′,3′,3′- TRIFLUOROPROPYL) CYCLOTRISILOXANE (F_3)
8.ε-Caprolactone was first successfully ring-opening polymerized with yttrium acetylacetone complex [Y(AcAc)?3] activated by grignard reagent (n-BuMgCl).
9.The rirg opening reaction of (3, 4), (8, 9)-diepoxyendotrioyclo [5.2.1.0~(2.6)deoane and its exo-isomer and some related model compounds with hydrogen chloride in acetone was studied. The results indicated that the epoxy group on cyclopentane ring was more reactive towards such ring opening agent than that on the bicyclo[2.2.1] heptane ring.
10.6.It was found that (ArO)[(DIPPh)2nacnac]YbCl(THF) (8) exhibits good catalytic activity in the ring-opening polymerization of e-caprolactone.

