Talk:Samuel E. Horne Jr.

Horne
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.

http://www.chemistryexplained.com/Ru-Sp/Rubber.html

AresLiam (talk) 22:12, 24 March 2014 (UTC)