Bromobutyl (Bromo-Isobutene-Isoprene Rubber) (BIIR) from ExxonMobil Chemical

As EXXON Bromobutyl has the predominantly saturated backbone of butyl, it has many of the attributes of the butyl molecule:

Low permeability to air, gases and moisture

Vibration damping

Low glass transition temperature

Resistance to ageing and to weathering from atmospheric exposure

Wide vulcanization versatility

Fast cure rates

Processing safety: no nitrosamines or nitrosamines precursors

ExxonMobil Chemical offers a range of polymer viscosities and cure responses, reflecting adjustments in functionality and additives content. EXXON Bromobutyl is structurally similar to EXXON Chlorobutyl.

Click to view EXXON Bromobutyl Polymers web page

  Chemical Resistance Guide

          EXXON BROMOBUTYL 2222 RFU
          EXXON BROMOBUTYL 2244 RFU
          EXXON BROMOBUTYL 2255 RFU
Halobutyl rubbers offer greater cure compatibility in blends with diene polymers. Other properties similar to butyl rubber. BROMOBUTYL grades are faster curing than CHLOROBUTYL grades.

Chlorobutyl (Chloro-Isobutene-Isoprene Rubber) (CIIR) from ExxonMobil Chemical Company

Halobutyl rubbers offer greater cure compatibility in blends with diene polymers. Other properties similar to butyl rubber. BROMOBUTYL grades are faster curing than CHLOROBUTYL grades.

Click to view EXXON Chlorobutyl web page.

          EXXON CHLOROBUTYL 1066 EVA
          EXXON CHLOROBUTYL 1066 RFU
          EXXON CHLOROBUTYL 1068 RFU

EXXON is a trademark of ExxonMobil Chemical Corporation.