EFFECT OF AN ELECTRON DONOR ON THE LIVING POLYMERIZATION WITH TRIS(2-METHYL-1,3-BUTANDIONATO)VANADIUM/DIETHYL ALUMINIUM CHLORIDE
Imanishi, K; Ishihara, T; Horii, M; Wakabayashi, H; Ozaki, H; Ueki, S; Murata, M
| HERO ID | 1313053 |
|---|---|
| In Press | No |
| Year | 2002 |
| Title | EFFECT OF AN ELECTRON DONOR ON THE LIVING POLYMERIZATION WITH TRIS(2-METHYL-1,3-BUTANDIONATO)VANADIUM/DIETHYL ALUMINIUM CHLORIDE |
| Authors | Imanishi, K; Ishihara, T; Horii, M; Wakabayashi, H; Ozaki, H; Ueki, S; Murata, M |
| Journal | Kobunshi Ronbunshu |
| Abstract | The effect of electron donors on the catalytic composition of the catalyst system (I) consisting of a soluble vanadium complex tris(2-methyl-1,3-butandionato)vanadium/diethyl aluminium chloride, with the aim of increasing the number of active sites was studied. The rate of formation of these sites was greatly accelerated by addition of an ester or ether, the effect being dependent on the electron donor oxygen atom charge density (as calculated by MOPAC). The maximum charge density activation occurred at a charge density of -0.34, irrespective of the type of donor oxygen. Analysis of the stereoregularity of the polymers obtained indicated that the additives had no effect on the nature of the active sites but did increase their number. 5 refs. |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | POLYPROPYLENE; ACTIVE SITE; POLYMERISATION CATALYSTS; PROPYLENE POLYMER; MOLECULAR STRUCTURE; JAPAN; NMR SPECTROSCOPY; THERMOPLASTIC; TABLES; PP; NMR SPECTRUM; GRAPH; LIVING POLYMERIZATION; PLASTIC; POLYMERIZATION; ELECTRON DONOR; LIVING POLYMERISATION; POLYPROPENE; NMR SPECTRA; COMPANY; POLYMERISATION; STEREOREGULARITY; CATALYST; DATA; INSTITUTION; POLYMERIZATION CATALYST; TECHNICAL; COMPANIES; POLYMERISATION CATALYST; NUCLEAR MAGNETIC RESONANCE; PROPENE POLYMER |