- Name: Polyisobutylene
- CAS No.: 9003-27-4
- Appearance: Transparent, without impurities liquid
- Purity/Assay: 100%
- Package: 180kg/Drum
- Capacity: 3000MT/year
Polyisobutylene CAS 9003-27-4
Description
Polyisobutylene PIB
Quick Details
Chemical Name: Polyisobutylene
Synonyms: Isobutene polymer; Isobutylene homopolymer; 2-Methylpropene polymer
CAS No.: 9003-27-4
Molecular Formula: C4H8
Molecular Weight: 500-100000
Polyisobutylene Structure:
Purity: 100%
PIB Typical Properties
| Item | Standard |
| Appearance | Clear, Viscous liquid |
| Color, APHA | 40 |
| Specific Gravity @15.6 Deg C | 0.88-0.89 |
| Viscosity@100 Deg C, cSt | 200-260 |
| Flash point(COC), Deg C(Min) | 190 |
| Mw(Number average) | 900-1000 |
| Neutralisation Value(Max),mg of KOH/g | 0.02 |
| Water Content (Max),ppm | 40 |
Usage
1. Lubricants
PIB is widely used in lubricant for modifying / improving the viscosity of the
lubricant
2. Adhesives & Sealants
PIB addition in Pressure-sensitive adhesives (PSAs) and hot-melt adhesives (HMAs) helps to increase Bond strength. Polybutene addition attributes to modification of properties like:
Tack, Softness, Bond strength, Cohesive strength and Water resistance of adhesives
It also helps in improving the quick stick and peel strength of elastomers. Below are some applications in adhesives & sealants
Surgical tapes
Industrial tapes
Adhesives for paper laminates, labels and tapes
Masking and friction tapes
Butyl tapes used in automobile segment
3. Polymer modification
Polybutene is often used in polymer modification processes. Polymer modified with polyisobutylenes can have
Higher melt flow rates
Greater elongation and
Improved impact strengths.
4. Rubber modification
For a wide variety of vulcanized elastomers like natural rubber, butyl rubber, polyisoprene and
SBR. Polyisobutylenes are used as extenders and plasticizers. These compounds show
Excellent tensile strength
Elongation
5. Construction Chemicals
Polyisobutylenes can be used to modify the binding agents in asphalts used in tunnel
construction Usage of polybutylenes gives water resistant property in water proofing membrane.
PIB Packaging and Shipping
Packing: 180kg/Drum
Delivery: Sea or air
PIB Storage
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.