Description

Poly(α-Methylstyrene) (CAS NO 25014-31-7) is a high-performance thermoplastic polymer derived from the monomer α-methylstyrene. This material is valued for its excellent heat resistance, high glass transition temperature, and compatibility with other polymers, making it a crucial modifier and processing aid. It is primarily sought by manufacturers in the plastics, adhesives, and coatings industries who require enhanced thermal stability and flow properties in their formulations. Its utility extends to applications demanding precise control over melt viscosity and final product performance.

Application

• As a heat resistance modifier and processing aid for engineering plastics like ABS, PC, and nylon.
• In the formulation of high-temperature adhesives and sealants.
• As a viscosity index improver and tackifier in specialty coatings and inks.
• For the production of plasticizers and resin modifiers to enhance polymer blend properties.
• In the synthesis of copolymers for improved mechanical and thermal characteristics.
• As a compatibilizer in polymer alloys and blends.
• For research and development of advanced composite materials.

Basic Information

Product Name	Poly(α-Methylstyrene)
CAS No.	25014-31-7
Molecular Formula	(C9H10)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(α-Methylstyrene); Poly(1-methyl-1-phenylethylene); α-Methylstyrene polymer; Poly(AMS); PAMS; Poly(1-phenylethylene); Poly(vinyltoluene) homopolymer (related); AMS polymer
EINECS	246-562-0

Quality Control

Our Poly(α-Methylstyrene) is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including molecular weight distribution, glass transition temperature, and purity to ensure consistent performance and reliability in your applications. Certificates of Analysis (COA) detailing all 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 (15-25°C). Keep away from heat sources and open flame. For long-term storage, consider an inert atmosphere to maintain optimal properties.

Specification

Item	Specification
Appearance	White to off-white beads or powder
Identification (IR)	Conforms
Assay (as Polymer)	> 98.0 %
Glass Transition Temp (Tg)	> 170 °C
Weight Average Molecular Weight (Mw)	Contact for details
Moisture Content	< 0.5 %
Residual Monomer	< 0.1 %

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