caa a22 4500 46578772X CHVBK 20180323112014.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00983973 doi (NATIONALLICENCE)springer-10.1007/BF00983973 Metathesis degradation of natural rubber [Elektronische Daten] [A. Alimuniar, M. Yarmo, M. Rahman, S. Kohjiya, Y. Ikeda, S. Yamashita] Summary: Metathesis reaction of natural rubber was carried out using tungusten hexachloride and tetramethyl tin in chlorobenzene. The rubber had to be purified by several times precipitations before the reaction. Molecular weight decreased very much with the progress of reaction and with the increase of temperature. However, NMR studies indicated considerable decreases of carbon-carbon double bonds, which can not be explained by simple metathesis reaction. Some other reactions which consumed unsaturation have to be taken into account to elucidate the exact structure of resultant oligomers. Springer-Verlag, 1990 Alimuniar A. Department of Chemistry, Universiti Kebangsaan Malaysia, Bangi, 43600 UKM, Selangor, Malaysia aut Yarmo M. Department of Chemistry, Universiti Kebangsaan Malaysia, Bangi, 43600 UKM, Selangor, Malaysia aut Rahman M. Department of Chemistry, Universiti Pertanian Malaysia, 43400 UPM, Serdang, Selangor, Malaysia aut Kohjiya S. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut Ikeda Y. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut Yamashita S. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut Polymer Bulletin Springer-Verlag 23/1(1990-01-01), 119-126 0170-0839 23:1<119 1990 23 289 https://doi.org/10.1007/BF00983973 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00983973 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alimuniar A. Department of Chemistry, Universiti Kebangsaan Malaysia, Bangi, 43600 UKM, Selangor, Malaysia aut NATIONALLICENCE 700 1- Yarmo M. Department of Chemistry, Universiti Kebangsaan Malaysia, Bangi, 43600 UKM, Selangor, Malaysia aut NATIONALLICENCE 700 1- Rahman M. Department of Chemistry, Universiti Pertanian Malaysia, 43400 UPM, Serdang, Selangor, Malaysia aut NATIONALLICENCE 700 1- Kohjiya S. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut NATIONALLICENCE 700 1- Ikeda Y. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut NATIONALLICENCE 700 1- Yamashita S. Department of Material Science, Kyoto Institute of Technology, 606, Matsugasaki, Kyoto, Japan aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/1(1990-01-01), 119-126 0170-0839 23:1<119 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer