METATHESIS DEGRADATION OF NATURAL-RUBBER

被引:25
作者
ALIMUNIAR, A
YARMO, MA
RAHMAN, MZA
KOHJIYA, S
IKEDA, Y
YAMASHITA, S
机构
[1] UNIV AGR MALAYSIA,DEPT CHEM,SERDANG,MALAYSIA
[2] KYOTO INST TECHNOL,DEPT MAT SCI,KYOTO 606,JAPAN
关键词
D O I
10.1007/BF00983973
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
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. © 1990 Springer-Verlag.
引用
收藏
页码:119 / 126
页数:8
相关论文
共 19 条
[1]  
ALIMUNIAR A, 1988, 2ND JSPS VCC SEM CHE, P146
[2]   REACTIONS ON ZIEGLER-NAPTA CATALYSTS .2. GAS CHROMATOGRAPHIC POLYMER ANALYSIS AFTER METATHESIS DEGRADATION [J].
AST, W ;
HUMMEL, K .
NATURWISSENSCHAFTEN, 1970, 57 (11) :545-&
[3]  
BRYDSON JA, 1978, RUBBER CHEM, pCH7
[4]   OLEFIN METATHESIS REACTION [J].
CALDERON, N .
ACCOUNTS OF CHEMICAL RESEARCH, 1972, 5 (04) :127-&
[5]   RING-OPENING POLYMERIZATION OF UNSATURATED ALICYCLIC COMPOUNDS [J].
CALDERON, N ;
OFSTEAD, EA ;
JUDY, WA .
JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY, 1967, 5 (9PA1) :2209-&
[6]  
Cunneen J. I., 1970, ENCY POLYM SCI TECHN, V12, P304
[7]  
EDWARDS JH, 1984, POLYMER, V27, P1281
[8]   SOME NEW ASPECTS OF POLYMER DEGRADATION BY OLEFIN METATHESIS [J].
HUMMEL, K ;
STELZER, F ;
HEILING, P ;
WEDAM, OA ;
GRIESSER, H .
JOURNAL OF MOLECULAR CATALYSIS, 1980, 8 (1-3) :253-262
[9]  
HUMMEL K, 1982, KAUT GUMMI KUNST, V36, P731
[10]  
IKEDA H, 1977, ACS SYM SER, V59, pCH21