1,3-Butadiene, 2-methyl-, polymer with 2-methyl-1-propene

1,3-butadiene,2-methyl-,polymers,polymer with 2-methyl-1-propene ; pb 600 ; pb 400 ; isoprene, polymer with 2-methylpropene (8ci) ; 2-methyl-1,3-butadiene polymer with 2-methyl-1-propene ; lanxess butyl 402 ; pb 100 (polymer) ; butylrubber ; fine particle rubber ; isobutylene-isoprene elastomer ; lm butyl md 504 ; butyl rubberisobutylene-isoprene copolymers are indexed here ; lanxess butyl ; lm butyl ; brominated butyl rubbervalid heading during volumes 126-130 (1997-june1999) only ; pb 100 ; butyl rubber ; isobutylene/isoprene copolymer ; lanxess butyl 100 ; poly(isobutylene-co-isoprene)