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While earlier attempts to produce satisfactory synthetic rubber from isoprene were unsuccessful, in 1955 American chemist Samuel Emmett Horne Jr. (b. 1924) prepared 98 percent cis -1,4-polyisoprene via the stereospecific polymerization of isoprene. Horne's product differs from natural rubber only in that it contains a small amount of cis -1,2-polyisoprene, but it is indistinguishable from natural rubber in physical properties. First produced in 1961, BR (for butadiene rubber), a rubberlike polymer that is almost exclusively cis -1,4-polybutadiene, when blended with natural or SBR rubber, has been used for tire treads.
This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to
join the project and
contribute to the discussion. For instructions on how to use this banner, please refer to the
documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography articles
This article is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of
chemistry on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.ChemistryWikipedia:WikiProject ChemistryTemplate:WikiProject ChemistryChemistry articles
This article is part of the History of Science WikiProject, an attempt to improve and organize the
history of science content on Wikipedia. If you would like to participate, you can edit the article attached to this page, or visit the
project page, where you can join the project and/or contribute to the
discussion. You can also help with the History of Science Collaboration of the Month.History of ScienceWikipedia:WikiProject History of ScienceTemplate:WikiProject History of Sciencehistory of science articles
While earlier attempts to produce satisfactory synthetic rubber from isoprene were unsuccessful, in 1955 American chemist Samuel Emmett Horne Jr. (b. 1924) prepared 98 percent cis -1,4-polyisoprene via the stereospecific polymerization of isoprene. Horne's product differs from natural rubber only in that it contains a small amount of cis -1,2-polyisoprene, but it is indistinguishable from natural rubber in physical properties. First produced in 1961, BR (for butadiene rubber), a rubberlike polymer that is almost exclusively cis -1,4-polybutadiene, when blended with natural or SBR rubber, has been used for tire treads.
