Description

Polybutadiene, Epoxy/Hydroxy Functionalized is a reactive liquid polymer featuring both epoxy and terminal hydroxyl groups on a polybutadiene backbone. This dual functionality makes it a versatile modifier and crosslinking agent, significantly enhancing the toughness, flexibility, and adhesion properties of various polymer matrices. It is primarily sought by formulators in the adhesives, sealants, coatings, and advanced composite materials industries for developing high-performance products.

Application

• Toughening Agent for Epoxy Resins: Used to improve the impact resistance and fracture toughness of cured epoxy systems for structural adhesives and composite matrices.
• Flexibilizer for Coatings and Sealants: Incorporated into polyurethane, epoxy, or acrylic formulations to impart flexibility, elongation, and low-temperature performance.
• Reactive Modifier for Elastomers: Acts as a compatibilizer and crosslinker in rubber compounding to enhance mechanical properties and adhesion to substrates.
• Adhesion Promoter: Improves the bond strength of adhesives and coatings to difficult-to-bond surfaces like metals, plastics, and treated glass.
• Intermediate for Specialty Polymers: Serves as a macromonomer or prepolymer for synthesizing block copolymers, polyurethanes, and other advanced polymeric materials.

Basic Information

Product Name	Polybutadiene, Epoxy/Hydroxy Functionalized
CAS No.	129288-65-9
Molecular Formula	Contact for details
Molecular Weight	Varies by grade (Typical range: 1,000 - 5,000 g/mol)
Synonyms	Epoxy-Hydroxy Terminated Polybutadiene; Hydroxyl-Functional Epoxidized Polybutadiene; Polybutadiene Diol, Epoxidized; EHTPB; Liquid Epoxy-Functionalized Polybutadiene Rubber; Reactive Liquid Polymer; Butadiene-Epoxy-Hydroxy Terpolymer; 1,3-Butadiene homopolymer, epoxy, hydroxy-terminated
EINECS	Contact for details

Quality Control

Our Polybutadiene, Epoxy/Hydroxy Functionalized is manufactured under a strict quality management system. Each batch is characterized for key parameters including epoxy value, hydroxyl value, molecular weight, and viscosity to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) documenting these specifications are available upon request.

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 hygroscopic (moisture-sensitive). Keep container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 4
Epoxy Value (equiv./100g)	0.05 - 0.20
Hydroxyl Value (mg KOH/g)	30 - 70
Viscosity @ 25°C (cPs)	5,000 - 50,000
Moisture Content (KF)	≤ 0.1%

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