Description

Poly(Styrene-Co-α-Methylstyrene) is a high-performance thermoplastic copolymer engineered to deliver enhanced thermal stability and processability compared to standard polystyrene. This material matters for applications requiring a higher heat deflection temperature and improved dimensional stability under thermal stress. It is needed by manufacturers in the plastics compounding, specialty adhesives, and advanced polymer formulation industries seeking to upgrade the performance profile of their products.

Application

This copolymer is utilized across various industrial sectors where enhanced thermal properties are critical:

• As a modifier in engineering plastic blends to improve heat resistance.
• In the formulation of high-temperature adhesives and hot-melt systems.
• For the production of specialty films and sheets requiring dimensional stability.
• As a base resin in compounding for electrical components with thermal demands.
• In the manufacture of impact-resistant and heat-stable polymer alloys.
• For research and development of novel polymeric materials with tailored glass transition temperatures (Tg).

Basic Information

Product Name	Poly(Styrene-Co-α-Methylstyrene)
CAS No.	9011-11-4
Molecular Formula	(C8H8·C9H10)x
Molecular Weight	Varies by grade and composition
Synonyms	Styrene/α-Methylstyrene Copolymer; α-Methylstyrene-Styrene Copolymer; Poly(styrene-co-α-methylstyrene); SAN (Styrene Acrylonitrile) related copolymer; AMS-Styrene Resin; Thermoplastic Copolymer Resin; Polystyrene-co-(α-methylstyrene); High Heat Styrenic Copolymer
EINECS	Contact for details

Quality Control

Our Poly(Styrene-Co-α-Methylstyrene) is produced under a stringent quality management system. Each batch undergoes rigorous testing for key parameters including composition, molecular weight distribution, thermal properties, and purity to ensure consistency and performance. Certificates of Analysis (COA) detailing these specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from heat sources and open flames. For long-term storage, consider conditions to prevent moisture absorption and physical compaction.

Specification

Item	Specification
Appearance	White to off-white beads or powder
Identification (IR)	Conforms to structure
Composition (α-Methylstyrene Content)	Varies by grade (e.g., 10-50%)
Glass Transition Temperature (Tg)	105°C - 130°C (Typical)
Residual Monomer	< 0.5%
Moisture Content	< 0.5%
Melt Flow Index (MFI)	Varies by grade

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