Description

Carboxy-Terminated Polybutadiene,Glycidyl Methacrylate Diester is a specialized reactive oligomer that combines the flexible polybutadiene backbone with terminal carboxyl groups and glycidyl methacrylate functionality. This unique structure provides excellent adhesion, flexibility, and crosslinking potential, making it a critical component in high-performance formulations. It is essential for industries requiring advanced polymer modification, such as adhesives, coatings, and composite materials.

Application

• Toughening Agent for Epoxy Resins: Used to improve the fracture toughness and impact resistance of epoxy systems in structural adhesives and composite matrices.
• Adhesive Formulations: Serves as a key reactive modifier in high-strength, flexible structural and pressure-sensitive adhesives.
• Advanced Coatings: Incorporated into coating formulations to enhance flexibility, chemical resistance, and adhesion to difficult substrates.
• Composite Materials: Acts as an interfacial agent or matrix modifier in fiber-reinforced plastics (FRP) and other composite systems.
• Polymer Modification: Utilized for the synthesis and modification of various polymers to introduce carboxyl and epoxy-reactive sites.
• Sealants and Encapsulants: Imparts flexibility and durability to sealants used in construction, automotive, and electronics.

Basic Information

Product Name	Carboxy-Terminated Polybutadiene,Glycidyl Methacrylate Diester
CAS No.	68649-04-7
Molecular Formula	Typically (C4H6)n modified with C7H10O3 and COOH termini
Molecular Weight	Varies by grade (typically 1000-5000 g/mol). Contact for details.
Synonyms	CTPB-GMA Diester; Glycidyl Methacrylate-Modified Carboxyl-Terminated Polybutadiene; Polybutadiene, carboxy-terminated, glycidyl methacrylate ester; Reactive Polybutadiene Oligomer; GMA-CTPB; Epoxy-Functionalized Liquid Rubber; Carboxyl-terminated butadiene polymer glycidyl methacrylate adduct
EINECS	Contact for details.

Quality Control

Our Carboxy-Terminated Polybutadiene,Glycidyl Methacrylate Diester is manufactured under a strict quality management system. Each batch is tested to ensure consistent performance in critical applications like adhesives and composites. Key parameters monitored include acid value, epoxy equivalent weight, viscosity, and molecular weight distribution. A comprehensive Certificate of Analysis (COA) is provided with every shipment to guarantee specification compliance.

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); ensure containers are sealed immediately after use to prevent moisture absorption, which can affect reactivity. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Viscous liquid, clear to amber
Acid Value	Contact for details
Epoxy Equivalent Weight (EEW)	Contact for details
Viscosity @ 25°C	Contact for details
Color (Gardner)	≤ 6
Identification (IR)	Conforms
Moisture Content	≤ 0.5%

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