A Comparative Study of Slurry and Gas Phase Polymerization of Propylene Using a Highly Active and Isospecific Catalyst고활성, 고입체규칙성 촉매에 의한 슬러리상 및 기상 프로필렌 중합의 비교연구

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A comparative study has been made for propylene polymerization in gas phase and slurry phase reactors using a new MgCl2-supported TiCl4 catalyst prepared by the reaction of Mg(OEt)2 with Ti(OBu)4, phthalic anhydride, and TiCl4. The experimental results obtained from polymerizations combined with AlEt3/phenyltriethoxy silane (PTES) showed that the rate of polymerization was lower for gas phase than for slurry phase within an experimental temperature range (25-60℃), even if rate-time profiles obeyed first-order deactivation for both cases except the gas phase polymerization at 60℃. The change of polymerization rate according to the variation of polymerization medium could be confirmed by a specially designed polymerization. The apparent activation energy of slurry phase polymerization (10.3 kcal/mol over a temperature of 25-60℃) was much larger than that of gas phase (4.3 kcal/mol over a temperature range of 25-50℃), and the differences could be explained by referring the formation process of polymerization centers. The change of isotacticity(II) of polymer was negligible without regard to the process and temperature of polymerization compared with the large differences of activity.
Publisher
한국고분자학회
Issue Date
1991-10
Language
English
Citation

폴리머, v.15, no.5, pp.514 - 521

ISSN
0379-153X
URI
http://hdl.handle.net/10203/66336
Appears in Collection
CBE-Journal Papers(저널논문)
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