Polybutadiene [MW 3,000], also known as PBR, is a low molecular weight synthetic rubber polymer supplied as a liquid. This high-vinyl polybutadiene is used in elastomer formulation, adhesives, sealants, polymer blends, impact modification studies, and rubber or plastics research.
Synonyms / related names: PBR; polybutadiene; butadiene polymer; high-vinyl polybutadiene.
With a molecular weight of approximately 3,000 and viscosity of 65,000 cps at 45°C, this liquid polybutadiene is useful in formulation work where flexibility, elastomeric behavior, hydrophobicity, and processability are important. The vinyl-1,2 content of 80% should be considered when evaluating cure behavior, compatibility, and final polymer properties.
Researchers, formulators, and industrial users may use polybutadiene [MW 3,000] in adhesive and sealant systems, polymer blends, impact-modified plastics research, elastomer development, coatings, and specialty materials formulation.
Key Properties
- Low molecular weight synthetic rubber polymer
- CAS Number: 9003-17-2
- Product Number: 06081
- Synonym: PBR
- Linear Formula: [-CH2CH=CHCH2-]
- Molecular Weight: ~3,000
- Liquid high-vinyl polybutadiene
- Vinyl-1,2 content: 80%
- Viscosity: 65,000 cps @ 45°C
- Refractive Index: 1.5
- Density: 0.89
Applications
Adhesives & Sealants
Polybutadiene [MW 3,000] may be used in adhesive and sealant formulation work where flexibility, rubbery behavior, and impact resistance are important performance considerations.
Polymer Blends & Impact Modification
This liquid polybutadiene may be evaluated in polymer blends and impact-modification studies involving compatible plastics, elastomers, and specialty polymer systems.
Elastomer & Rubber Formulation
PBR may be used in elastomer and rubber formulation research where low molecular weight polybutadiene, vinyl content, and processing behavior influence final material properties.
Coatings & Specialty Materials
Polybutadiene may be evaluated in coatings and specialty materials research where flexibility, hydrophobicity, and elastomeric film or matrix behavior are relevant.
Compatibility & Formulation Considerations
- Low molecular weight liquid polymer supports flexible formulation and processing studies
- Vinyl-1,2 content can influence cure behavior, reactivity, and final polymer properties
- Compatibility depends on resin package, plasticizers, fillers, curing system, additives, and processing conditions
- Final properties depend on formulation design, cure chemistry, temperature, substrate, and end-use requirements
- Evaluate compatibility with plastics, elastomers, solvents, fillers, and additives before scale-up
Final performance should be confirmed under the user’s specific formulation and processing conditions, including concentration, mixing order, cure schedule, additive package, substrate, and intended application.
Preparation Tips
- Warm or mix as appropriate to support uniform handling of the viscous liquid
- Use clean equipment to reduce contamination during formulation
- Measure carefully when incorporating into adhesive, sealant, blend, or elastomer systems
- Confirm compatibility with selected curing agents, fillers, resins, and plasticizers before use
- Run small-scale processing and cure trials before production or process transfer
Handling & Storage
- Store at room temperature
- Exercise normal care during handling
- Keep container tightly closed when not in use
- Use good ventilation and standard laboratory or industrial safety practices
- Wear protective gloves and safety glasses when appropriate
- Refer to the Safety Data Sheet before handling
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FAQ
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1. What is Polybutadiene [MW 3,000] used for?
Polybutadiene [MW 3,000] is used in adhesives, sealants, polymer blends, impact modification studies, elastomer formulation, coatings, and specialty rubber or plastics research.
2. What is the molecular weight of this polybutadiene product?
The molecular weight is approximately 3,000.
3. What is the vinyl-1,2 content?
This material has a vinyl-1,2 content of 80%, which can influence cure behavior, compatibility, and final polymer properties.
4. What is the viscosity of Polybutadiene [MW 3,000]?
The viscosity is 65,000 cps at 45°C.
5. How should Polybutadiene [MW 3,000] be stored?
Store Polybutadiene [MW 3,000] at room temperature. Review the Safety Data Sheet for complete storage, handling, and personal protective equipment guidance.
Safety & Documentation
Polybutadiene [MW 3,000] should be handled using normal precautions and standard laboratory or industrial safety practices. Refer to the Safety Data Sheet (SDS) and product specification for complete handling, storage, hazard, and technical information.
