Polyisobutene
Sample of polyisobutene with a molecular weight of ~1,000,000[1]
Names
Other names
Polyisobutylene; Poly(isobutene); Poly(isobutylene); PIB
Identifiers
ChEBI
ECHA InfoCard 100.108.750 Edit this at Wikidata
UNII
Properties
(C4H8)n
Molar mass Variable
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Polyisobutene (polyisobutylene) is a class of organic polymers prepared by polymerization of isobutene. The polymers often have the formula Me3C[CH2CMe2]nH (Me = CH3). They are typically colorless gummy solids.

Cationic polymerization, initiated with a strong Brønsted or Lewis acid, is the typical method for its production. The molecular weight (MW) of the resulting polymer determines the applications. Low MW polyisobutene, a mixture of oligomers with Mns of about 500, is used as plasticizers. Medium and high MW polyisobutenes, with Mn ≥ 20,000, are components of commercial adhesives.[2]

See also

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References

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  1. ^ OPPANOL B 100 by BASF
  2. ^ Kenneth S. Whiteley; T. Geoffrey Heggs; Hartmut Koch; Ralph L. Mawer; Wolfgang Immel (2005). "Polyolefins". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a21_487.

📚 Artikel Terkait di Wikipedia

Butyl rubber

isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene,

PIB

(PiB), chemical used in studying Alzheimer's Disease Polyisobutylene or polyisobutene, a synthetic rubber Píib or pib, a Mayan earth oven Permanent interest

Ineos

IA (isoamylene/TAME), linear alpha olefins, poly alpha olefins, polyisobutene, Technikum (cyclopentane, CP70, methylpropadiene) Oxide Acetate, acetate

Hydraulic fluid

silicones, alkylated aromatic hydrocarbons, polyalphaolefins (PAO) (e.g. polyisobutenes), NaK-77, a eutectic alloy of sodium and potassium, can be used as a

Alkenylsuccinic anhydrides

lubricants and fuels. and deposit-control agents There are two types of polyisobutene used for this purpose, and they are commonly known as conventional and

Plasma polymerization

acrylate, polymethyl methacrylate, polyvinyl acetate, polyisoprene, polyisobutene, and polyethylene. Nearly all polymers created by this method have excellent

Anechoic tile

the original on 9 June 2010. Retrieved 17 December 2010. "Oppanol – polyisobutenes". BASF – The Chemical Company. Retrieved 10 June 2013.{{cite web}}: