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Isobutylene-isoprene rubber HR

ACRONYMS PIB, HR (isobutylene isoprene rubber), ClIIR (chlorinated HR), BrIIR (brominated IIR) ... [Pg.600]

Synonyms 1,3-Butadiene-2-methyl polymer with 2-methyl-l-propene Butyl rubber HR Isobutylene/isoprene copolymers 3-Methyl-1,3-butadiene polymer with 2-methyl-1 -propene Poly (isobutylene-co-isoprene) Definition Copolymer of isobutylene and isoprene monomers Formuia (CsHs C4H8),... [Pg.1157]

Halobutyl rubber (HIIR) is used primarily in tire innerliner and white sidewalls. These elastomers are best for tire air retention owing to lower air permeability as well as aging and fatigue resistance. The chlorinated (CIIR) and brominated (BUR) versions of isobutylene isoprene rubber (HR) can be blended with other elastomers to improve adhesion between HIIR compounds and those based on general purpose elastomers, and improve vulcanization kinetics [16]. [Pg.410]

Figure 12.88 Production process for isobutylene-isoprene rubber (HR, butyl rubber)... Figure 12.88 Production process for isobutylene-isoprene rubber (HR, butyl rubber)...
Butyl rubber - A copolymer of isobutylene and isoprene rubber ASTM designation HR butyl rubber is the common name for such materials. [Pg.264]

IBACOS integrated building and construction so- HR butyl rubber (isobutylene-isoprene... [Pg.598]

Butyl rubber (HR). A synthetic rubber, a copolymer of isobutylene with 2 to 5% of isoprene. HR rubber-goods are resistant to hot steam, oxygen, and ozone their gas-permeability is low. Examples of applications hose of tyres, air bags. Trade names Hycar Butyl (USA), Polysar Butyl (USA). [Pg.14]

Butyl rubber (HR) is an isobutylene-based rubber which includes copolymers of isobutylene and isoprene, halogenated butyl rubbers, and isobutylene/p-methylstyrene/bromo-p-methylstyrene terpoly-mers. HR can be slurry polymerized from isobutylene copolymerized with small amounts of isoprene in methyl chloride diluent at -130 to - 148°F (-90 to - 100°C). Halogenated butyl is produced by dissolving butyl rubber in a hydrocarbon solvent and introducing elemental halogen in gas or liquid state.Cross-linked terpolymers are formed with isobutylene + isoprene + divinylbenzene. [Pg.227]

Butyl rubber (HR) contains isobutylene as the parent material to which small proportions of butadiene or isoprene are added. Commercial butyl rubber may contain 5% butadiene as a copolymer. Chlorobutyl rubber (CIIR) is chlorinated isobutylene-isoprene. Both rubbers have the same general properties except that chlorobutyl rubber has a slightly higher allowable operating temperature. [Pg.156]

Natural rubber or polyisoprene (NR or IR) Ethylene propylene diene rubber (EPDM) Isobutylene-isoprene (butyl) rubber (HR)... [Pg.64]

See other pages where Isobutylene-isoprene rubber HR is mentioned: [Pg.2]    [Pg.1194]    [Pg.416]    [Pg.551]    [Pg.164]    [Pg.7284]    [Pg.34]    [Pg.72]    [Pg.102]    [Pg.116]    [Pg.138]    [Pg.163]    [Pg.175]    [Pg.184]    [Pg.224]    [Pg.243]    [Pg.311]    [Pg.327]    [Pg.596]    [Pg.119]    [Pg.127]    [Pg.2]    [Pg.1194]    [Pg.416]    [Pg.551]    [Pg.164]    [Pg.7284]    [Pg.34]    [Pg.72]    [Pg.102]    [Pg.116]    [Pg.138]    [Pg.163]    [Pg.175]    [Pg.184]    [Pg.224]    [Pg.243]    [Pg.311]    [Pg.327]    [Pg.596]    [Pg.119]    [Pg.127]    [Pg.873]    [Pg.48]    [Pg.138]    [Pg.426]    [Pg.66]    [Pg.174]    [Pg.7331]    [Pg.109]    [Pg.220]    [Pg.91]    [Pg.110]    [Pg.811]    [Pg.148]    [Pg.72]    [Pg.11]   


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Isobutylene

Isobutylene rubber

Isobutylene-Isoprene Rubbers

Isobutylene-isoprene

Isoprene rubber

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