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  2. Butyl rubber - Wikipedia

    en.wikipedia.org/wiki/Butyl_rubber

    Butyl rubber gloves. Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C 4 H 8) n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is ...

  3. Elastomer - Wikipedia

    en.wikipedia.org/wiki/Elastomer

    Chloroprene rubber (CR), polychloroprene, neoprene; Butyl rubber (copolymer of isobutene and isoprene, IIR) Halogenated butyl rubbers (chloro butyl rubber: CIIR; bromo butyl rubber: BIIR) Styrene-butadiene rubber (copolymer of styrene and butadiene, SBR) Nitrile rubber (copolymer of butadiene and acrylonitrile, NBR), also called Buna N rubbers

  4. Synthetic rubber - Wikipedia

    en.wikipedia.org/wiki/Synthetic_rubber

    Examples include Viton rubber, EPDM and butyl rubber. A new class of synthetic rubber is the thermoplastic elastomers which can be moulded easily unlike conventional natural rubber vulcanized rubber. Their structure is stabilized by cross-linking by crystallites in the case of polyurethanes or by amorphous domains in the case of SBS block ...

  5. Isobutylene - Wikipedia

    en.wikipedia.org/wiki/Isobutylene

    Polymerization of isobutylene produces butyl rubber (polyisobutylene or PIB). Antioxidants such as butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) are produced by Friedel-Crafts alkylation of phenols with isobutylene. tert-Butylamine is produced commercially by amination of isobutylene using zeolite catalysts: [6]

  6. Nitrile rubber - Wikipedia

    en.wikipedia.org/wiki/Nitrile_rubber

    Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. [1] Trade names include Perbunan, Nipol, Krynac and Europrene. This rubber is unusual in being resistant to oil, fuel, and other chemicals.

  7. Cationic polymerization - Wikipedia

    en.wikipedia.org/wiki/Cationic_polymerization

    Butyl rubber gloves. Butyl rubber, in contrast to PIB, is a copolymer in which the monomers isobutylene (~98%) and isoprene (2%) are polymerized in a process similar to high molecular weight PIBs. Butyl rubber polymerization is carried out as a continuous process with AlCl 3 as the initiator. Its low gas permeability and good resistance to ...

  8. List of gasoline additives - Wikipedia

    en.wikipedia.org/wiki/List_of_gasoline_additives

    Butyl rubber (as polyisobutylene succinimide, detergent to prevent fouling of diesel fuel injectors) Ferrous picrate, used in diesel fuel to increase fuel conversion efficiency and reduce emissions; Two-stroke oil, for lubrication of small engines reliant on crankcase compression; Upper cylinder lubricant, extensively advertised but of unproven ...

  9. Polybutadiene - Wikipedia

    en.wikipedia.org/wiki/Polybutadiene

    Polybutadiene rubber is seldom used alone, but is instead mixed with other rubbers. Polybutadiene is difficult to band in a two roll mixing mill. Instead, a thin sheet of polybutadiene may be prepared and kept separate. Then, after proper mastication of natural rubber, the polybutadiene rubber may be added to the two roll mixing mill.

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