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Hydrogenation of natural rubber with Ru[CHCH(Ph)]Cl(CO)(PCy 3 ) 2 as a catalyst
Author(s) -
Tangthongkul Rungnapa,
Prasassarakich Pattarapan,
Rempel Garry L.
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.21922
Subject(s) - catalysis , natural rubber , ethylene , chemistry , copolymer , hydrogen , polymer chemistry , vulcanization , polymer , organic chemistry , materials science
Ru[CHCH(Ph)]Cl(CO)(PCy 3 ) 2 (where PCy 3 is tricyclohexylphosphine) functions as an efficient catalytic system for the hydrogenation of natural rubber. Furthermore, the addition of an acid plays an important role in promoting the hydrogenation process. The quantitative hydrogenation of natural rubber results in a polymer akin to an alternating ethylene–propylene copolymer. Kinetic studies have been carried out via the monitoring of the amount of hydrogen consumed: first‐order behavior has been observed with respect to the carbon–carbon double‐bond concentration, catalyst concentration, and hydrogen pressure, and an inverse dependence on the added PCy 3 concentration has been found. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 2399–2406, 2005