𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ring-Opening Polymerization of ε-Caprolactone by Phosphorane Iminato and Cyclopentadienyl Complexes of Rare Earth Elements

✍ Scribed by Palaniswamy Ravi; Thorsten Gröb; Kurt Dehnicke; Andreas Greiner

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
144 KB
Volume
202
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Ring-opening polymerization of ϵ-caprola
Ring-opening polymerization of ϵ-caprolactone initiated by rare earth complex catalysts
✍ Xianmo Deng; Zhixue Zhu; Chengdong Xiong; Lianlai Zhang 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 149 KB

The polymerization of caprolactone ( 1-CL) was initiated by yttrium triisopropoxide {Y(OP i r ) 3 }, bimetallic isopropoxide of yttrium and aluminum {Y[Al(OP i s ) 4 ] 3 }, yttrium and tin(II) {Y[Sn(OP i r ) 3 ] 3 }, and tin(II) and yttrium {Sn[Y(OP i r ) 4 ] 2 }, respectively. The polymerization wa

Ring-opening polymerization of ε-caprola
Ring-opening polymerization of ε-caprolactone initiated by cyclopentadienyl sodium
✍ Minglong Yuan; Chengdong Xiong; Xianmo Deng 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 116 KB

Polymerization of 1-caprolactone had been investigated with cyclopentadienyl sodium as an initiator. The effects of reaction time, temperature, and concentration of the initiator on the yield and molecular weight of the polymer were discussed. It was shown that the high molecular weight of poly(1-ca

Polymerization of lactides and lactones.
Polymerization of lactides and lactones. IV. Ring-opening polymerization of ε-caprolactone by rare earth phenyl compounds
✍ Xianmo Deng; Minlong Yuan; Chengdong Xiong; Xiaohong Li 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 153 KB

Ring-opening polymerization of -caprolactone (CL) has been initiated with rare earth phenyl compounds in both bulk and solution. These rare earth phenyl initiators can give polycaprolactone (PCL) with high yield and high molecular weight. The polymerization mechanism is through a coordination-deprot

Polymerization of lactides and lactones.
Polymerization of lactides and lactones. II. Ring-opening polymerization of ε-caprolactone and DL-lactide by organoacid rare earth compounds
✍ X. M. Deng; M. L. Yuan; C. D. Xiong; X. H. Li 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 144 KB 👁 1 views

Ring-opening polymerization of lactone and lactide have been initiated with rare earth organoacid compounds, such as lanthanum acetate in bulk. The polymerization mechanism is in agreement with the "nonionic-coordination-insertion" mechanism, which involves the selective cleavage of the acyl-oxygen

Homoleptic Phosphoraneiminato Complexes
Homoleptic Phosphoraneiminato Complexes of Rare Earth Elements as Initiators for Ring-Opening Polymerization of Lactones
✍ Thorsten Gröb; Gert Seybert; Werner Massa; Frank Weller; Ravi Palaniswami; Andre 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 91 KB 👁 2 views

Phosphoraneiminato complexes of transition metals containing the NPR 3 À group are known in many coordinationchemical variations [1] as a result of varying bonding modes. In complexes with metal ions in low oxidation states (i, ii) the NPR 3 À group acts as m 3 -N bridging ligand, in medium oxidati