Braskem America PIB 4

Braskem America PIB 4 is a non-toxic polymer derived from the polymerization of an isobutene-rich stream using specific catalysts. It mainly consists of aliphatic mono-olefins, resulting in a clear and bright product free from sediments or suspended matter. With NSF certification, PIB 4 is suitable for use in lubricants and synthetic oils, including those for food-grade and pharmaceutical-grade applications. Additionally, it serves as an emollient agent in cosmetics and acts as a plasticizer for thermoplastic resins like PE, PP, PVC, and others.

For more information regarding REACH, please visit Braskem's REACH site

INCI Name: Polyisobutene

Polymer Name: Polyisobutylene Rubber (IM)

Functions: Emollient, Intermediate, Plasticizer, Rheology Modifier

Chemical Family: Polyisobutylene Polymers (PIB), Polyolefins

Labeling Claims: Clean at Sephora, Credo Clean Standard, Impurities-free, Non-Toxic, Sustainable, Ulta Beauty's Conscious Beauty

Synonyms: 1,1-Dimethylethylene homopolymer, 2-Methyl-1-propene homopolymer, 2-Methylpropene polymer, Isobutene homopolymer, Isobutene polymer, Isobutylene homopolymer, Isobutylene polymer, Isobutylene resin, Poly(2-methylpropene)

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 37.8°C)16cStASTM D 445
Water Content80ppmASTM E 203
Flash Point125°CASTM D 92
Color70Pt-CoASTM D 1209
Molecular Weight (Mn)350DaltonsInternal - GPC
Polydispersity Index (Mw/Mn)1.14-Internal - GPC
Pour Point-55.0°CASTM D 97
Density (at 20/4°C)0.82-ASTM D 4052
Refractive Index1.46nDASTM D 1218
Chlorine Content180ppmASTM D 5808

Regulatory & Compliance

Packaging & Availability

Packaging Type
Packaging Information

PIB is supplied in 170 kg metallic drums or in isotanks.

Storage & Handling

Shelf Life
3 years
Recommended Storage & Handling Conditions
  • Polybutene polymer must be stored at temperatures under 50°C, and protected from direct sunlight, moisture and in order to avoid direct contact with the soil.
  • Shelf life: 3 (three) years from production, since the recommended storage conditions are respected.