Description

Polybutadiene, Phenyl Terminated is a specialized liquid polymer featuring reactive phenyl groups at the chain ends. This unique termination provides enhanced compatibility with aromatic systems and modifies the polymer's reactivity profile, making it a valuable intermediate for advanced material synthesis. It is primarily utilized in the formulation of high-performance elastomers, adhesives, and as a modifier in epoxy and other resin systems to improve toughness and thermal properties.

Application

• Elastomer and Rubber Modification: Acts as a reactive liquid polymer to improve the impact resistance, flexibility, and low-temperature performance of polyurethanes, epoxies, and other thermosets.
• Adhesive and Sealant Formulations: Serves as a key component in high-strength, flexible adhesives and sealants, particularly where compatibility with aromatic compounds is required.
• Polymer Synthesis and Chain Extension: Used as a macromonomer or telechelic polymer for synthesizing block copolymers, graft polymers, and other advanced polymeric architectures.
• Resin and Composite Toughening: Incorporated into epoxy, vinyl ester, and other brittle resin matrices to induce phase separation and significantly enhance fracture toughness without compromising thermal stability.
• Coating Additives: Functions as a flexibilizer and impact modifier in protective and industrial coatings to prevent cracking and improve durability.
• Pressure-Sensitive Adhesives (PSAs): Modifies the viscoelastic properties of PSAs to balance tack, peel strength, and shear resistance.

Basic Information

Product Name	Polybutadiene, Phenyl Terminated
CAS No.	25038-44-2
Molecular Formula	Typically C4nH6n+2 (with phenyl end groups)
Molecular Weight	Variable (Typically 1,000 - 5,000 g/mol). Contact for details on specific grades.
Synonyms	Phenyl-Terminated Polybutadiene; Polybutadiene Diol, Phenyl Terminated; 1,3-Butadiene homopolymer, phenyl-terminated; Hydroxyl-Terminated Polybutadiene (Phenyl); HTPB (Phenyl); Liquid Polybutadiene Rubber (Phenyl); Telechelic Polybutadiene (Phenyl); Butadiene Polymer, Phenyl End-Capped
EINECS	Contact for details

Quality Control

Our Polybutadiene, Phenyl Terminated is manufactured under controlled conditions to ensure batch-to-batch consistency. Quality is verified through a series of analytical tests including determination of hydroxyl value, viscosity, molecular weight distribution (GPC), and infrared spectroscopy for structural confirmation. A Certificate of Analysis (COA) detailing specific results for each lot is provided to guarantee the product meets agreed specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere) and is compatible with strong acids and organic solvents. Keep away from heat, sparks, and open flame. For long-term storage, purging the headspace with an inert gas such as nitrogen is recommended to maintain product integrity.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cPs)	Contact for details
Molecular Weight (Mn, GPC)	Contact for details
Moisture Content (KF)	< 0.1%
Identification (IR)	Conforms to structure

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.