caa a22 4500 465788513 CHVBK 20180323112016.0 cr unu---uuuuu 170327e19900201xx s 000 0 eng 10.1007/BF00338500 doi (NATIONALLICENCE)springer-10.1007/BF00338500 Copolymerization kinetics obtained by stopped-flow polymerization [Elektronische Daten] [Kyung-Suk Kang, Kyung-Jun Chu, Ho-Sik Chang, Son-Ki Ihm] Summary: Ethylene-propylene copolymerization was carried out over MgCl2-supported TiCl4 catalyst with two different reaction schemes; i.e., stopped-flow copolymerization (SFC) and continuously-purged copolymerization (CPC). The reactivity ratios for each monomer was evaluated by Fineman-Ross and Kelen-Tüdôs methods. It was found that the SFC resulted in smaller value of ethylene reactivity ratio(rE) and larger value of propylene reactivity ratio(rp) than the CPC. This seems to be attributed to the different extent of interaction between catalytic titanium sites and aluminum alkyls, i.e. active site formation and its over-reduction. Springer-Verlag, 1990 Kang Kyung-Suk Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut Chu Kyung-Jun Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut Chang Ho-Sik Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut Ihm Son-Ki Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut Polymer Bulletin Springer-Verlag 23/2(1990-02-01), 191-197 0170-0839 23:2<191 1990 23 289 https://doi.org/10.1007/BF00338500 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00338500 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kang Kyung-Suk Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut NATIONALLICENCE 700 1- Chu Kyung-Jun Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut NATIONALLICENCE 700 1- Chang Ho-Sik Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut NATIONALLICENCE 700 1- Ihm Son-Ki Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Cheongryang, P.O. Box 131, Seoul, Korea aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/2(1990-02-01), 191-197 0170-0839 23:2<191 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer