Polyisobutylene CAS# 9003-27-4
Polyisobutylene CAS# 9003-27-4 - Image 2
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Polyisobutylene CAS# 9003-27-4

Polyisobutylene is composed of long-chain hydrocarbon formed by polymerization of isobutene, and is extremely stable under normal conditions. It is transparent non-noxious high-consistency semi-solid polymer free of impurities.
The physical properties of polyisobutene are very dependent on molecular weight. Polymers with average molecular weight (Mw) of about 15 000 are sticky viscous liquids whilst those with molecular weight of 100000-200000 are rubber-like, resembling unmilled crepe rubber.

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Polyisobutylene CAS# 9003-27-4

Product Name: Polyisobutylene
Synonyms: isobutenehomopolymer;isobutenepolymer;isobutylenehomopolymer;POLYISOBUTYLENE(C12-C20);maxvis2000;napvis30;oktol;oppanolb
CAS: 9003-27-4
MF: C4H8
MW: 56.10632
EINECS: 618-360-8
Product Categories: Butene and Higher;Poly(isobutylene);Alphabetic;Organic Soluble Polymers;P;POLB – POLYPolymer Standards;Polymers;Butene and Higher Organic Electronics and Photonics;Dielectric Materials;Hydrophobic Polymers;Olefins;Organic Conductors and Photovoltaics: OFET and OPV Materials;Butene and Higher;Dielectric Materials;Hydrophobic Polymers;Materials Science;Organic and Printed Electronics;Organic Field Effect Transistor (OFET) Materials;Polymer Science;9003-27-4
Mol File: 9003-27-4.mol
Polyisobutylene Structure
Polyisobutylene Chemical Properties
Melting point 54-56 °C
Boiling point 300 °C
density 0.92 g/mL at 25 °C (lit.)
Tg -61
Tg -62
Tg -64
Tg -75
refractive index n20/D 1.51
Fp >212
Fp >482
form slab/chunk
Stability: Stability Combustible. Incompatible with strong oxidizing agents.
InChI InChI=1S/C4H8/c1-4(2)3/h1H2,2-3H3
InChIKey VQTUBCCKSQIDNK-UHFFFAOYSA-N
SMILES C=C(C)C
EPA Substance Registry System Polyisobutylene (9003-27-4)

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