"' Butyl rubber "'is a synthetic rubber, a copolymer of isobutylene with isoprene.
12.
When the pressure was released, McIntire discovered that the styrene had formed a polymer but the isobutylene had not.
13.
But-1-ene is a linear or normal alpha-olefin and isobutylene is a branched alpha-olefin.
14.
The DCC uses vacuum gas oil ( VGO ) as a feedstock to produce primarily propylene, isobutylene, and isoamylene.
15.
Polybutene is another copolymer, containing roughly 80 % isobutylene and 20 % other butenes ( usually 1-butene ).
16.
It is currently prepared industrially by the reaction of isobutylene with hydrogen sulfide over a clay ( silica alumina ) catalyst.
17.
The PID is usually calibrated using isobutylene, and other analytes may produce a relatively greater or lesser response on a concentration basis.
18.
The propylene, butylene and isobutylene are also valuable feedstocks for certain petroleum refining processes that convert them into high-octane gasoline blending components.
19.
Synthetic polymers such as acrylic are manufactured from chemical feedstocks such as acetone, hydrogen cyanide, ethylene, isobutylene, and other petroleum derivatives.
20.
Isobutylene diketone ? ( Or isobutylene dicarboxylic acid for the acid version ? ) talk ) 21 : 37, 10 January 2010 ( UTC)
