Description

Ethylene/Methacrylic Acid Ionomer, Sodium Ion is a specialized copolymer where a portion of the methacrylic acid groups are neutralized with sodium ions, creating a unique ionic polymer structure. This material is valued for its exceptional combination of toughness, clarity, and adhesion to various substrates, including metals and polar polymers. It is a critical performance material for industries requiring durable, transparent, and chemically resistant components, such as packaging, sporting goods, and automotive applications.

Application

• Multi-Layer Food Packaging Films: Used as a tie-layer or sealant layer due to its excellent adhesion to aluminum foil, nylon, and polyethylene, providing strong, durable seals with good clarity.
• Golf Ball Covers: Provides exceptional cut resistance, durability, and consistent performance, contributing to the "feel" and flight characteristics of high-performance golf balls.
• Automotive Components: Employed in bumper covers, trim, and other parts requiring paintability, impact resistance, and weatherability.
• Footwear: Used in components like ski boots and cleats where a balance of stiffness, low-temperature flexibility, and abrasion resistance is needed.
• Thermoformed Packaging: Suitable for blister packs and clamshells requiring high clarity, toughness, and formability.
• Adhesives and Coatings: Serves as a base resin for formulations requiring adhesion to difficult substrates and resistance to oils and greases.

Basic Information

Product Name	Ethylene/Methacrylic Acid Ionomer, Sodium Ion
CAS No.	25608-26-8
Molecular Formula	(C5H8O2 · C2H4)x · xNa
Molecular Weight	Varies (Polymer)
Synonyms	Ethylene-Methacrylic Acid Sodium Ionomer; Sodium Ionomer of Ethylene-Methacrylic Acid Copolymer; Ionomer Resin (Na); Poly(ethylene-co-methacrylic acid), sodium salt; Surlyn® (Na-type); AClyn® (Na-type); Iotek® (Na-type); Ethylene/MAA copolymer, sodium salt
EINECS	Contact for details

Quality Control

Our ionomer resins are manufactured under strict quality management systems to ensure batch-to-batch consistency in melt flow, acid neutralization level, and physical properties. Quality is verified through a suite of tests including FT-IR for identification, titration for acid content, and standardized tests for melt index, density, and mechanical performance. Certificates of Analysis (COA) detailing lot-specific data are provided with every shipment. We can support compliance with relevant regulations for food contact and other specific applications 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). Keep away from strong oxidizing agents and excessive heat sources to prevent degradation. As a thermoplastic material, it should be stored under conditions that prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Clear to translucent pellets
Melt Flow Rate (190°C/2.16 kg)	0.5 - 30 g/10 min (Grade Dependent)
Density	0.93 - 0.97 g/cm³
Neutralization Level (as Na)	10 - 80% (Grade Dependent)
Methacrylic Acid Content	5 - 20 wt%
Tensile Strength at Yield	10 - 25 MPa
Elongation at Break	200 - 500%

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