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Halogenated Rubbers

Halogenated Butyl Rubber. Halogenation at the isoprene site ia butyl mbber proceeds by a halonium ion mechanism leading to a double-bond shift and formation of an exomethylene alkyl haUde. Both chlorinated and brominated mbber show the predominate stmcture (1) (>80%), by nmr, as described eadier (33,34). Halogenation of the unsaturation has no apparent effect on the isobutylene backbone chains. Cross-linked samples do not crystallize on extension due to the chain irregularities introduced by the halogenated isoprene units. [Pg.484]

The standard polymers used for rubber linings consist of materials that are cross-linkable macromolecules which, on mixing with suitable reactants that form strong chemical bonds, change from a soft deformable substance into an elastic material. These polymers include natural rubber and its corresponding synthetic, c/s-polyisoprene, styrene-butadiene rubber, polychloroprene, butyl rubber, halogenated butyl rubbers, acrylonitrile-... [Pg.938]

Butyl rubber, halogenated butyl rubber linings and ethylene propylene rubber linings have excellent chemical resistance at temperatures up to 120°C. There are cases where butyl rubber linings have been subjected to temperatures down to —65°C without deterioration. Linings based on these polymers do not exhibit good abrasion resistance, which can only be rated as fair. [Pg.944]

Natural rubber Styrene-butadiene rubber Polybutadiene Polyisoprene Nitrile rubber Halogenated nitrile rubber Ethylene-propylene rubber EPDM... [Pg.440]

ISO 7663, 1995. Rubber, Halogenated Isobutene-Isoprene (BUR and CIIR) - Evaluation procedure. [Pg.91]

Figure 11 General scheme for butyl rubber halogenation and observed structures... Figure 11 General scheme for butyl rubber halogenation and observed structures...
Polybutadiene Natural rubber Halogenated butyl Polypropylene... [Pg.4]

Characteristic Natural rubber (Halogen-) Butylrubber Silicone rubber Ethylene-Propylene rabher... [Pg.509]

This recommendation does not apply when the incineration system is designed for the processing of a specific waste feed (e.g. ion exchange resin, rubber, halogenated plastics). [Pg.15]

Chlorinated polyethylene Styrene-butadiene rubber (SBR) Polybutadiene Natural rubber Halogenated butyl Polypropylene... [Pg.48]

Vulcanization rates are higher than for normal butyl rubber because the presence of allylic halide increases the reactivity of the unsaturated sites. Brominated butyl rubber shows higher vulcanization rates than chlorinated butyl rubber. Halogenated butyl rubbers can be vulcanized with various reagents, e.g. diamines, dihydroxy aromatic compounds and zinc oxide. [Pg.72]

See other pages where Halogenated Rubbers is mentioned: [Pg.72]    [Pg.487]    [Pg.309]    [Pg.699]    [Pg.563]    [Pg.571]    [Pg.16]    [Pg.365]    [Pg.686]    [Pg.1013]    [Pg.337]    [Pg.410]    [Pg.315]    [Pg.3]    [Pg.115]    [Pg.361]    [Pg.911]    [Pg.207]    [Pg.71]   
See also in sourсe #XX -- [ Pg.25 ]



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