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Rubber Product Guide - Over 400 products for rubber compounding! VAROX® crosslinking agent Peroxides for the Rubber and Plastics Industries Brochure Filler Minerals Reference - A Guide to Filler Properties and Uses Vanderbilt Report:"Wollastonite in Polypropylene - Size, Shape and Surface Modification" Non-Black Fillers For RubberPolymer Information: EXXON™ Butyls EXXON™ Halogenated Butyls (Bromobutyl and Chlorobutyl) EXXON™ Star-branched Butyls Hypalon® chlorosulfonated polyethylene Neoprene polychloroprene[select 'Polymers' on the right hand navigation] Nipol® IR polyisoprene Vistalon™ Viton® fluoroelastomers[select 'Polymers' on the right hand navigation] |
EXXON™ Halogenated Butyl Polymers
As EXXON Bromobutyl and EXXON Chlorobutyl both contain the predominantly saturated backbone of Butyl, these polymers have many of the attributes of the parent elastomer, Butyl:
EXXON Bromobutyl and EXXON Chlorobutyl standard 75 lb. bales are provided with either of these wraps:
Chemical Resistance GuideEXXON Bromobutyl Polymers EXXON Bromobutyl is structurally similar to EXXON Chlorobutyl and, like Chlorobutyl it has a broader vulcanization latitude than butyl due to its reactive functionality. In relation to Chlorobutyl, Bromobutyl provides an additional level of crosslinking reactivity based upon its lower C-Br bond energy, compared to the C-Cl bond. This results in compounds with faster cure rates that can utilize a wider assortment of curative systems. As a result, Bromobutyl provides an even higher level of co-curing compatibility with general purpose elastomers than Chlorobutyl.
Click to view EXXON Bromobutyl Polymers web page EXXON Chlorobutyl Polymers Chlorobutyl can be vulcanized with certain curative systems to provide improved properties at elevated temperatures in comparison to Butyl. It also enables a degree of covulcanization with general purpose rubbers which Butyl cannot achieve. Due to the relative reactivity of carbon-halogen bonds, Chlorobutyl reacts more slowly than Bromobutyl, so it possesses a more predictive cure response with additional scorch and processing safety, and less sensitivity to mixing, processing, and storage conditions.
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R.T. Vanderbilt Company, Inc. 30 Winfield Street Norwalk, CT 06856 800.243.6064 e-mail: Rubber Sales Inquiry
fax:203.853.1452 |