What are the properties of polyisobutylene? (CAS 9003-27-4)
PIB possesses numerous excellent properties, such as good thermal stability, easy emulsification, and non-irritating characteristics. It is colorless, odorless, and non-toxic, a high-purity liquid isomerized straight-chain alkane suitable for use in the cosmetics industry.
what is the purpose of polyisobutylene?(CAS 9003-27-4)
Lubricant Additives
Polyisobutylene (CAS 9003-27-4) serves as a viscosity index improver in lubricants, enhancing viscosity and lubricating properties to effectively reduce mechanical wear and extend equipment lifespan.
Rubber and Plastic Products
In rubber and plastic products, polyisobutylene pib functions as a plasticizer and softener, improving product flexibility and cold resistance. It also enhances processing performance and reduces production costs.
Cosmetics Industry
Polyisobutylene (pib) functions as a thickener in cosmetics, enhancing product stability and spreadability. Furthermore, it improves moisturizing effects, leaving skin smoother and more refined.
Pharmaceutical Industry
In pharmaceutical applications, Polyisobutylene (pib) serves as a base for ointments and tablets, facilitating even skin application and controlled drug release to enhance therapeutic efficacy.
Other Applications
Furthermore, pib is utilized in coatings, sealants, and insulating materials to improve product abrasion resistance, corrosion resistance, and electrical insulation properties.

Is polyisobutylene used in cosmetics? (CAS 9003-27-4)
Properties of Polyisobutylene
Polyisobutylene is a polymeric compound formed by the polymerization of isobutylene monomers. Its characteristics make it an ideal ingredient for cosmetics:
- Chemical inertness: Does not react with common ingredients, offering high stability and suitability for sensitive skin products.
- Strong adhesion: Forms a uniform film to enhance makeup longevity.
- Low allergenicity: Certified under EU Regulation EC 1223/2009, ensuring high safety.
Applications of Polyisobutylene in Cosmetics
Applications in Skincare Products
- Moisturizer: Forms a water-locking film to reduce moisture evaporation, commonly found in face creams (typically at 1%-5% concentration).
- Thickener: Improves lotion texture; one study showed a 40% increase in viscosity for formulations containing 3% PIB.
Functions in Color Cosmetics
- Lipsticks and Mascaras: Improves adhesion and water resistance; tests indicate PIB-enhanced mascaras exhibit 60% greater water resistance.
- Foundation: Enhances spreadability and prevents caking.
Supportive Role in Hair Care Products
- Hair Waxes and Conditioners: Delivers shine without stickiness.
Is polyisobutylene safe for skin?(CAS 9003-27-4)
Due to its inertness and resistance to chemical changes, polyisobutene is considered a safe ingredient. It does not cause allergic reactions or irritation, making it suitable even for sensitive skin.

