Dienes

Polymers made from diene monomers are usually quite flexible and are used as elastomers. This group includes natural rubber and related materials, as well as the large number of synthetic polymers made with diene monomers. Residual unsaturation in these polymers is often used to cross-link (vulcanize) the materials to improve their physical properties.

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180912 Poly(acrylonitrile-co-butadiene) acrylonitrile 37-39 wt. %
418870 Poly(acrylonitrile-co-butadiene), dicarboxy terminated average Mn ~3,800, acrylonitrile 8-12 wt. %
181382 Polybutadiene average Mw ~200,000
434779 Polybutadiene average Mn 1,530-2,070 by VPO
383694 Polybutadiene average Mn ~5,000
181374 Polybutadiene, cis average Mw 200,000-300,000
200433 Polybutadiene, phenyl terminated average Mn ~1,800
200484 Polybutadiene, phenyl terminated average Mn ~1,500
466867 Polybutadiene, predominantly 1,2-addition approx. 90% 1,2-vinyl
205400 Polychloroprene 85% trans, 10% cis
205397 Polychloroprene 85% trans, 10% cis
182141 Polyisoprene, cis 97% cis-1,4
431257 Polyisoprene, cis average Mw ~38,000 by GPC, made from natural rubber
431265 Polyisoprene, cis average Mw ~35,000 by GPC, made from synthetic rubber
182168 Polyisoprene, trans pellets, 99+% trans-1,4
460060 Polyisoprene-graft-maleic anhydride average Mw ~25,000