Polymerization of acetylene and 1-alkynes by rare-earth coordination catalysts
β Scribed by Zhiquan Shen; Mujie Yang; Michael F. Farona
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 118 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0020-1693
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π SIMILAR VOLUMES
## Abstract A highly active rare earth coordination catalyst composed of neodymium acetylacetonate, dibutylmagnesium, and hexamethylphosphoramide (mole ratio 1:7:14) for the polymerization of __N__βphenylmaleimide (NβPMI) was developed. The resulting poly(NβPMI) has high molecular weight (__MΜ__~n~
A novel rare earth coordination system composed of lanthanide tri-Γuoroacetates (Ln \ Y, Yb, Nd, Tm, Ho, La, Pr) and tri-Ln(CF 3 COO) 3 isobutylaluminium Al(i-Bu) was used as catalyst for the polymerization of 3 e-caprolactone (CL), D,L-lactide (DLLA) and their copolymerization. The inΓuence of temp