Description

Hydroxyl-Terminated Polybutadiene CAS NO 69102-90-5 is a reactive liquid polymer featuring a polybutadiene backbone with terminal hydroxyl (-OH) groups. This unique structure provides excellent flexibility, low-temperature properties, and compatibility with various isocyanates, making it a crucial intermediate for high-performance polyurethane systems. It is essential for manufacturers in the aerospace, automotive, adhesive, and sealant industries seeking to enhance the toughness and resilience of their products.

Application

• Polyurethane Elastomers and Coatings: Serves as a key polyol component for producing flexible, abrasion-resistant, and hydrolytically stable PU elastomers, coatings, and binders.
• Rocket Propellant Binders: Widely used as a binder in composite solid propellants due to its high energy content and good mechanical properties at low temperatures.
• Adhesives and Sealants: Imparts flexibility, adhesion, and moisture resistance to high-performance structural adhesives, potting compounds, and sealants.
• Polymer Modification: Acts as a reactive modifier for epoxy resins and other polymers to improve impact resistance and reduce brittleness.
• Waterproofing Membranes: Used in the formulation of durable, flexible waterproofing coatings and membranes for construction applications.
• Automotive Parts: Found in the production of flexible automotive components such as bushings, gaskets, and vibration dampeners.

Basic Information

Product Name	Hydroxyl-Terminated Polybutadiene
CAS No.	69102-90-5
Molecular Formula	(C4H6O)n•H2O
Molecular Weight	Contact for details
Synonyms	HTPB; HO-terminated polybutadiene; Polybutadiene, hydroxyl-terminated; Liquid hydroxyl-terminated polybutadiene; Butadiene homopolymer, hydroxyl-terminated; R-45M; Poly bd; 1,3-Butadiene homopolymer, hydroxyl-terminated; Hydroxyl-terminated butadiene polymer
EINECS	Contact for details

Quality Control

Our Hydroxyl-Terminated Polybutadiene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency in hydroxyl value, viscosity, molecular weight, and moisture content, meeting the stringent requirements of the aerospace and defense sectors. Certificates of Analysis (COA) are provided with every shipment, and we support compliance with relevant 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; for long-term storage, it is recommended to keep under an inert atmosphere (e.g., nitrogen) to prevent degradation and cross-linking. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity (cP @ 30°C)	Contact for details
Moisture Content (%)	≤ 0.05
Molecular Weight (Mn)	Contact for details
Functionality	~ 2.2 - 2.6
Identification (IR)	Conforms

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