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.
Polyisobutene
Sample of polyisobutene with a molecular weight of ~1,000,000[1]
Polymerization is typically initiated with a strong Brønsted or Lewis acid. 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]
^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.
November 19, 2023
polyisobutene, polyisobutylene, class, organic, polymers, prepared, polymerization, isobutene, polymers, often, have, formula, me3c, ch2cme2, they, typically, colorless, gummy, solids, sample, polyisobutene, with, molecular, weight, namesother, names, polyisob. 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 Polyisobutene Sample of polyisobutene with a molecular weight of 1 000 000 1 NamesOther names Polyisobutylene Poly isobutene Poly isobutylene PIBIdentifiersCAS Number 9003 27 4 YChEBI CHEBI 53725ECHA InfoCard 100 108 750UNII 241BN7J12Y YCompTox Dashboard EPA DTXSID2036451PropertiesChemical formula C4H8 nMolar mass VariableExcept where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox references Polymerization is typically initiated with a strong Bronsted or Lewis acid 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 editButyl rubber PolybuteneReferences edit OPPANOL B 100 by BASF 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 Retrieved from https en wikipedia org w index php title Polyisobutene amp oldid 1181806910, wikipedia, wiki, book, books, library,
