Polyisobutylene
Polyisobutylene (CAS: 9003-27-4, Formula: [CH2C(CH3)2]n) is a synthetic hydrophobic polymer known for its exceptional impermeability to gases and excellent dielectric properties. With an average molecular weight typically in the hundreds of thousands, it is supplied by Tech Serve Solutions as chunks. Its versatile characteristics make it valuable in various industrial applications requiring lubrication, sealing, or dielectric insulation.
![Polyisobutylene ([CH2C(CH3)2]n) — chemical structure, CAS 9003-27-4; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F9003-27-4.png&w=3840&q=75)
Adhesives and Sealants
Polyisobutylene's tackiness and low volatility make it a useful component in formulating adhesives and sealants. It contributes to flexibility and adhesion to various substrates.
Lubricants and Greases
Its lubricating properties and resistance to oxidation allow polyisobutylene to be used as a base oil or additive in greases and lubricants, particularly in demanding environments.
Dielectric Applications
The excellent electrical insulating capabilities of polyisobutylene make it suitable for use in dielectric fluids and as an insulating material in electrical components.
Elastomers and Plastics Modification
It can be blended with other polymers to improve their processing characteristics, flexibility, and barrier properties, enhancing the performance of final products.
| Linear formula | [CH2C(CH3)2]n |
|---|---|
| Form | chunks |
| Density | 0.92 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5045 |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Mol Wt | average Mn ~200,000 by GPC/MALLSaverage Mv ~420,000average Mw ~500,000 |
|---|---|
| Transition Temp | Tg −64 °C |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Polyisobutylene used for?
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Polyisobutylene (CAS: 9003-27-4) is used in applications such as adhesives, sealants, lubricants, dielectric fluids, and as a modifier for other polymers due to its hydrophobic nature, gas impermeability, and dielectric properties.
What are the CAS number and formula for Polyisobutylene?
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The CAS number for Polyisobutylene is 9003-27-4, and its linear formula is [CH2C(CH3)2]n.
What grade and purity does Tech Serve Solutions supply for Polyisobutylene?
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Tech Serve Solutions supplies Polyisobutylene with specified average molecular weights (e.g., Mn ~200,000, Mv ~420,000, Mw ~500,000) in chunk form. This is a technical/research grade product and is not represented as USP, BP, or EP grade.
What safety precautions should be taken when handling Polyisobutylene?
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When handling Polyisobutylene, it is recommended to use appropriate personal protective equipment, including eyeshields and gloves. The WGK (German water hazard class) is 3, indicating it is hazardous to water.
How is Polyisobutylene packed and shipped?
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Polyisobutylene is supplied in chunk form and can be packed and exported by Tech Serve Solutions according to customer requirements and international shipping regulations.
How can I request a sample or quote for Polyisobutylene?
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To request a sample or a quotation for Polyisobutylene, please contact our sales department through the website or by phone, providing your specific requirements.
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