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- Butyl_rubber abstract "Butyl rubber 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, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, having two methyl groups substituted on every other carbon atom. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor.Butyl rubber has excellent impermeability, and the long polyisobutylene segments of its polymer chains give it good flex properties. The formula for PIB is:–(–CH2–C(CH3)2–)n–The formula for IIR is: It can be made from the monomer isobutylene or CH2=C(CH3)2 only via cationic addition polymerization.A synthetic rubber, or elastomer, butyl rubber is impermeable to air and used in many applications requiring an airtight rubber. Polyisobutylene and butyl rubber are used in the manufacture of adhesives, agricultural chemicals, fiber optic compounds, ball bladders, caulks and sealants, cling film, electrical fluids, lubricants (2 cycle engine oil), paper and pulp, personal care products, pigment concentrates, for rubber and polymer modification, for protecting and sealing certain equipment for use in areas where chemical weapons are present, as a gasoline/diesel fuel additive, and even in chewing gum. The first major application of butyl rubber was tire inner tubes. This remains an important segment of its market even today.".
- Butyl_rubber thumbnail Butyl_rubber_gloves.JPG?width=300.
- Butyl_rubber wikiPageExternalLink D286.pdf.
- Butyl_rubber wikiPageExternalLink pib.htm.
- Butyl_rubber wikiPageExternalLink Polyisobutylene-150.html.
- Butyl_rubber wikiPageID "2133681".
- Butyl_rubber wikiPageRevisionID "595020133".
- Butyl_rubber hasPhotoCollection Butyl_rubber.
- Butyl_rubber subject Category:Elastomers.
- Butyl_rubber subject Category:Fuel_additives.
- Butyl_rubber subject Category:Organic_polymers.
- Butyl_rubber subject Category:Thickening_agents.
- Butyl_rubber comment "Butyl rubber 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, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene.".
- Butyl_rubber label "Butyl rubber".
- Butyl_rubber label "Butylkautschuk".
- Butyl_rubber label "Бутилкаучук".
- Butyl_rubber label "丁基橡胶".
- Butyl_rubber sameAs Butylkautschuk.
- Butyl_rubber sameAs m.06p9dy.
- Butyl_rubber sameAs Q145000.
- Butyl_rubber sameAs Q145000.
- Butyl_rubber wasDerivedFrom Butyl_rubber?oldid=595020133.
- Butyl_rubber depiction Butyl_rubber_gloves.JPG.
- Butyl_rubber isPrimaryTopicOf Butyl_rubber.