Polyisobutylene

Base Information

• Chemical Name: Polyisobutylene
• CAS No.: 9003-27-4
• Molecular Formula: (C4H8)n
• Molecular Weight: 56.10632
• Hs Code.: 39022000
• Mol file: 9003-27-4.mol

Synonyms:Propene, 2-methyl-, polymers;1-Propene,-2-methyl-, homopolymer;2-Methyl-1-propene, homopolymer;Polyisobutene;2-Methylpropene polymer;HSDB 1260;Isobutene homopolymer;Isobutene polymer;Isobutylene homopolymer;Maxvis 2000;UNII-4GAS6381TX;

Chemical Property of Polyisobutylene

Chemical Property:

• Appearance/Colour: Colorless to light yellow viscoelastic material
• Melting Point: 54-56 °C
• Refractive Index: n20/D 1.51
• Boiling Point: 300 °C
• PSA: 0.00000
• Density: 0.92 g/mL at 25 °C(lit.)
• LogP: 1.70180

Purity/Quality:

99%, ^*data from raw suppliers

POLYISOBUTYLENE 95.00% ^*data from reagent suppliers

Safty Information:

• Safety Statements: 24/25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Uses: polyisobutene (hydrogenated) is an emollient.Polyisobutylene, sometimes called butyl rubber, and other times PIB, is a vinyl polymer. It's very similar to polyethylene and polypropylene in structure, except that every other carbon is substituted with two methyl groups. It is made from the monomer isobutylene, by cationic vinyl polymerization.Polyisobutylene is a synthetic rubber, or elastomer. It's special because it's the only rubber that's gas impermeable. That is, it's the only rubber that can hold air for long periods of time. You may have noticed that balloons will go flat after a few days. This is because they are made of polyisoprene, which is not gas impermeable. Because polyisobutylene will hold air, it is used to make things like the inner tubes, liner layers of tires, and the inner liners of basketballs.

Technology Process of Polyisobutylene

There total 2 articles about Polyisobutylene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

isobutene (115-11-7,15220-85-6) → polyisobutene (9003-27-4)

Guidance literature:

With 1,4-bis(o-chloroisopropyl)benzene; triethoxyphenylsilane; titanium tetrachloride; In hexane; dichloromethane; isopropyl alcohol; at -78 - 20 ℃; for 2h;

Reference yield:

→ polyisobutene (9003-27-4)

Guidance literature:

upstream raw materials:

isobutene

Refernces

• 1、 -. "SUBSTITUTED CYCLOALKANES, AND USE THEREOF AS CATIONIC POLYMERIZATION INITIATORS". Page/Page column 16; 17. . Retrieved 2010/02/11.