Description

2-Propenenitrile, Polymer With (1-Methylethenyl)Benzene CAS NO 25747-74-4 is a high-performance copolymer of acrylonitrile and α-methylstyrene, known for its excellent thermal stability, chemical resistance, and mechanical properties. This engineered material is critical for applications demanding superior clarity, rigidity, and barrier performance compared to standard styrenic polymers. It is primarily sought by manufacturers in the packaging, automotive, and electronics industries for producing specialized components, films, and housings.

Application

• High-Temperature Food Packaging: Used in the production of rigid containers, trays, and films that require clarity and resistance to heat during filling or sterilization processes.
• Automotive Components: Serves as a material for under-the-hood parts, interior trim, and light housings where thermal stability and chemical resistance to fuels and oils are essential.
• Electronic Housings & Components: Ideal for manufacturing casings for appliances, power tools, and electrical connectors due to its good dielectric properties and dimensional stability.
• Medical Device Packaging: Utilized in blister packs and medical trays where clarity, rigidity, and a high barrier to gases and moisture are required.
• Industrial & Consumer Goods: Applied in the manufacture of battery cases, cosmetic containers, and other molded articles that benefit from its glossy finish and strength.
• Barrier Layers in Multi-layer Films: Acts as a functional layer in co-extruded films to enhance oxygen and moisture barrier properties for sensitive products.

Basic Information

Product Name	2-Propenenitrile, Polymer With (1-Methylethenyl)Benzene
CAS No.	25747-74-4
Molecular Formula	(C3H3N·C9H10)x
Molecular Weight	Polymer - varies by grade
Synonyms	Acrylonitrile-α-methylstyrene copolymer; α-Methylstyrene-acrylonitrile copolymer; AMS-AN copolymer; Poly(acrylonitrile-co-α-methylstyrene); TYRIL™ (Dow trade name); NAS (Acrylonitrile-α-methylstyrene resin); 1-Methylethenylbenzene polymer with 2-propenenitrile; Acrylonitrile-methylstyrene resin
EINECS	Contact for details

Quality Control

Our acrylonitrile-α-methylstyrene copolymer is manufactured under a stringent quality management system. Each batch is tested to ensure consistent performance in key parameters such as monomer content, molecular weight distribution, thermal properties, and color. Certificates of Analysis (COA) detailing lot-specific results 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 room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources to maintain product integrity. Ensure the storage area is free from excessive humidity to prevent any potential moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless or light yellow pellets
Acrylonitrile Content	20 - 35%
Residual Monomers	< 100 ppm (each)
Vicat Softening Temperature	110 - 125 °C
Melt Flow Rate (MFR)	1.5 - 4.0 g/10 min (220°C/10kg)
Tensile Strength	60 - 75 MPa
Yellow Index (YI)	< 5
Moisture Content	< 0.1%

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