| CAS No.: | 9003-27-4 |
|---|---|
| Formula: | C4h8 |
| EINECS: | 618-360-8 |
|
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The details of Manufacturer Supply CAS 9003-27-4 Pib/Polyisobutene NW1300/1400/ Suppliers from China
Product Name: Polyisobutene
CAS: 9003-27-4
MF: C4H8
MW: 56.10632
EINECS: 618-360-8
Melting point 54-56 °C
Boiling point 300 °C
density 0.92 g/mL at 25 °C (lit.)
refractive index n20/D 1.51
form slab/chunk
Specification of Manufacturer Supply CAS 9003-27-4 Pib/Polyisobutene NW1300/1400/Suppliers from China
| Item | Specification | Result |
| Appearance | Colorless , No impurities |
Pass |
| Molecular Weight | 2400min | 2943 |
| Color(PT-CO) | ≤45 | 10 |
| Flash Point(Closed Cup), ºC | ≥180 | 200 |
| Density, kg/m3 | 908.3 | 908.3 |
| Viscosity 100ºC , mm2/s | 4500-4900 | 4742 |
| Water ,wppm | ≤50 | 27 |
| Acid Number, mgKOH/g | ≤0.02 | 0.003 |
Application of Manufacturer Supply CAS 9003-27-4 Pib/Polyisobutene NW1300/1400/ Suppliers from China
Polyisobutene (hydrogenated) is an emollient.
Polyisobutene , 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 Polyisobutene , by cationic vinyl polymerization.
It 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 Polyisobutene will hold air, it is used to make things like the inner tubes, liner layers of tires, and the inner liners of basketballs.
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