Hydrogenation of Epoxidized Natural Rubber in Latex Stage

Hydroxyl groups can be introduced in hydrogenated natural rubber by hydrogenation of epoxidized natural rubber (ENR). The ENR was prepared by epoxidation of high ammonia natural rubber with peracetic acid followed by deproteinization in the latex stage. Hydrogen gas in the presence of PdCl2 as a cat...

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Bibliographic Details
Published in:KOBUNSHI RONBUNSHU 2015/03/25, Vol.72(3), pp.118-123
Main Authors: YAMAMOTO, Yoshimasa, SHIOBARA, Keiichiro, HA, Nguyen Thu, NGHIA, Phan Trung, FUKUHARA, Lina, ISHII, Hiroyuki, KAWAHARA, Seiichi
Format: Article
Language:eng ; jpn
Subjects:
Ammonia
Epoxidized Natural Rubber
Hydrogenation
Hydroxyl Group
Hydroxyl groups
Latex
Natural Rubber
Peracetic acid
Reactions (nuclear)
Spectroscopy
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Summary:Hydroxyl groups can be introduced in hydrogenated natural rubber by hydrogenation of epoxidized natural rubber (ENR). The ENR was prepared by epoxidation of high ammonia natural rubber with peracetic acid followed by deproteinization in the latex stage. Hydrogen gas in the presence of PdCl2 as a catalyst was used as the hydrogenation agent in the latex stage. The resulting product was characterized by nuclear magnetic resonance spectroscopy. Under suitable reaction conditions, 90.7% of the double bonds could be converted. The content of residual double bond was 5.6% and the hydroxyl group content was 1.5%.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.2014-0068