Description

2-Propenenitrile-1,3-Butadiene, Carboxy Terminated-Bisphenol A Diglycidyl Ether Polymer is a specialized reactive polymer designed for high-performance applications. This engineered material combines the toughness of nitrile rubber with the cross-linking potential of an epoxy-terminated backbone, offering superior adhesion, chemical resistance, and mechanical property enhancement. It is essential for formulators and manufacturers in the advanced composites, adhesives, and coatings industries seeking to upgrade the durability and performance of their products.

Application

• Toughening Agent for Epoxy Resins: Primary use as a reactive modifier to significantly improve the fracture toughness, impact resistance, and fatigue performance of epoxy matrices in advanced composites for aerospace and automotive sectors.
• High-Performance Structural Adhesives: Key component in formulations requiring exceptional peel strength, environmental durability, and adhesion to diverse substrates including metals, plastics, and composites.
• Advanced Matrix Resins for Composites: Used in the synthesis of novel thermoset polymers for high-strength, lightweight composite materials in sporting goods, wind energy, and marine applications.
• Protective and Anti-Corrosion Coatings: Enhances the flexibility, chemical resistance, and adhesion of industrial and marine protective coating systems.
• Electronic Encapsulants and Underfills: Provides stress relief and improved reliability in electronic packaging by modifying epoxy encapsulants to reduce coefficient of thermal expansion (CTE) and internal stresses.
• Fiber-Reinforced Plastic (FRP) Modification: Improves the interlaminar shear strength and damage tolerance of carbon fiber and glass fiber reinforced polymers.

Basic Information

Product Name	2-Propenenitrile-1,3-Butadiene, Carboxy Terminated-Bisphenol A Diglycidyl Ether Polymer
CAS No.	68648-83-9
Molecular Formula	Contact for details
Molecular Weight	Varies by grade and polymerization degree
Synonyms	CTBN-modified Epoxy Resin; Carboxyl-Terminated Butadiene-Acrylonitrile Epoxy Adduct; Epoxy-Terminated CTBN; Reactive Liquid Polymer (RLP); ATBN Epoxy Adduct; Nitrile Rubber Modified Epoxy; Toughening Agent for Epoxy; Thermoset Toughener
EINECS	Contact for details

Quality Control

Our 2-Propenenitrile-1,3-Butadiene, Carboxy Terminated-Bisphenol A Diglycidyl Ether Polymer is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance characteristics such as epoxy equivalent weight (EEW), carboxyl content, acrylonitrile content, and viscosity. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This product is hygroscopic (moisture-sensitive); prolonged exposure to atmospheric humidity must be avoided to prevent premature reaction or property degradation. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Viscous liquid, amber to brown
Epoxy Equivalent Weight (EEW)	Contact for details
Carboxyl Content	Contact for details
Acrylonitrile Content	~18-26% (typical)
Viscosity @ 25°C	Varies by grade
Color (Gardner)	≤ 12
Volatile Content	≤ 1.0%

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