EFFECT OF INTERNAL AND EXTERNAL LEWIS BASES ON PROPYLENE/1-BUTENE COPOLYMERISATION WITH MAGNESIUM CHLORIDE-SUPPORTED ZIEGLER-NATTA CATALYSTS
Sacchi, MC; Shan, C; Forlini, F; Tritto, I; Locatelli, P
| HERO ID | 1313011 |
|---|---|
| In Press | No |
| Year | 1993 |
| Title | EFFECT OF INTERNAL AND EXTERNAL LEWIS BASES ON PROPYLENE/1-BUTENE COPOLYMERISATION WITH MAGNESIUM CHLORIDE-SUPPORTED ZIEGLER-NATTA CATALYSTS |
| Authors | Sacchi, MC; Shan, C; Forlini, F; Tritto, I; Locatelli, P |
| Abstract | The effect of internal and external bases on the copolymerisation of propylene with 1-butene was investigated. Catalytic systems used were magnesium chloride/titanium tetrachloride-triethylaluminium, magnesium chloride/titanium tetrachloride-triethylaluminium/tetramethylpiperidine(TMP), magnesium chloride/titanium tetrachloride-triethylaluminium /triethoxyphenylsilane(TPS), magnesium chloride/diisobutyl phthalate(DIBP)/titanium tetrachloride-triethylaluminium/TMP and magnesium chloride/DIBP/titanium tetrachloride-triethylaluminium /TPS. A series of copolymers of different compositions was produced using each catalytic system and the copolymers obtained were fractionated by sequential extraction with boiling solvents and the fractions characterised by means of carbon-13 NMR. The effect of the Lewis bases on the fraction distribution and on composition and the number-average sequence lengths of all fractions were analysed. 15 refs. |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | SEQUENCE LENGTH; STEREOSPECIFIC POLYMERIZATION; SUPPORTED CATALYST; FRACTIONATION; NMR SPECTROSCOPY; BUTENE COPOLYMER; THERMOPLASTIC; TABLES; ITALY; OLEFIN COPOLYMER; PLASTIC; EXTRACTION; STEREOSPECIFIC POLYMERISATION; EUROPEAN COMMUNITY; ZIEGLER-NATTA CATALYST; SOLVENT; DATA; POLYMERIZATION CATALYST; PROPYLENE COPOLYMER; TECHNICAL; COPOLYMER COMPOSITION; POLYMERISATION CATALYST; NUCLEAR MAGNETIC RESONANCE; LEWIS BASE; WESTERN EUROPE |