Description

Bicyclo2.2.1Hept-2-Ene, 5-Ethenyl-, Polymer With Ethene And 1-Propene is a specialized terpolymer, also known as an ethylene-propylene-norbornene (EPN) elastomer, designed to deliver a unique balance of elasticity, thermal stability, and chemical resistance. This material matters for formulators and engineers seeking to enhance the performance of rubber and plastic compounds under demanding conditions. It is primarily needed by manufacturers in the automotive, wire & cable, and industrial polymer modification sectors for creating high-performance seals, gaskets, and impact-resistant thermoplastic blends.

Application

• Automotive Seals and Gaskets: Used as a key modifier in ethylene-propylene-diene monomer (EPDM) formulations to improve low-temperature flexibility and compression set resistance for weather-stripping and under-hood components.
• Wire and Cable Insulation/Jacketing: Imparts excellent electrical insulation properties, thermal aging resistance, and weatherability to compounds used in power cables and automotive wiring.
• Polymer Modification and Impact Improvement: Acts as an impact modifier and compatibilizer for polyolefin blends (e.g., PP/PE), enhancing toughness and elongation at break.
• Oil and Fuel-Resistant Elastomers: Incorporated into specialty rubber formulations to boost resistance to oils, fuels, and polar fluids while maintaining elasticity.
• Thermoplastic Vulcanizates (TPVs): Serves as the elastomeric phase in dynamic vulcanization processes to create high-performance, recyclable TPVs for soft-touch and sealing applications.
• Adhesives and Sealants: Provides cohesive strength, flexibility, and durability to high-performance industrial and construction adhesives.

Basic Information

Product Name	Bicyclo2.2.1Hept-2-Ene, 5-Ethenyl-, Polymer With Ethene And 1-Propene
CAS No.	27155-45-9
Molecular Formula	(C9H12·C2H4·C3H6)x
Molecular Weight	Varies (Polymer)
Synonyms	Ethylene-Propylene-5-Vinyl-2-Norbornene Terpolymer; EPN Rubber; EPDM with 5-Vinyl-2-Norbornene; 5-Ethenylbicyclo[2.2.1]hept-2-ene polymer with ethene and propene; VNB-EPDM; Ethylene Propylene Vinyl Norbornene Terpolymer; ENB Alternative Polymer; Amorphous Ethylene-Propylene Copolymer modified with Vinyl Norbornene
EINECS	Contact for details

Quality Control

Our ethylene-propylene-norbornene (EPN) terpolymer is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for key parameters including monomer content, Mooney viscosity, and thermal stability to ensure consistent performance and compliance with industry specifications. Certificates of Analysis (COA) detailing lot-specific results are available upon request to support your quality assurance and regulatory needs.

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). Keep away from heat sources and open flame. For long-term storage, consider using an inert atmosphere to prevent oxidative degradation.

Specification

Item	Specification
Appearance	White to off-white granules or pellets
Mooney Viscosity (ML 1+4 @ 125°C)	20 - 80 (Grade dependent)
Ethylene Content	45 - 75 wt%
5-Vinyl-2-Norbornene Content	1 - 10 wt%
Ash Content	≤ 0.5 %
Volatile Matter	≤ 1.0 %

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