Description

Polymaleimide CAS NO 25721-74-8 is a high-performance polymer derived from maleimide monomers, characterized by its excellent thermal stability and chemical resistance. This compound is a critical material for advanced manufacturing processes requiring durable, high-temperature polymers. It is primarily sought after by industries involved in the production of specialty resins, high-performance composites, and electronic materials.

Application

• High-Temperature Resins: Used as a key component in the formulation of polyimide and bismaleimide resins for aerospace and automotive composites.
• Electronic Encapsulation: Serves as a precursor for dielectric materials and protective coatings in semiconductor and microelectronic devices.
• Adhesive & Matrix Systems: Employed in the synthesis of high-strength, heat-resistant structural adhesives and composite matrix systems.
• Flame Retardant Additives: Acts as a reactive intermediate to enhance the flame-retardant properties of plastics and textiles.
• Crosslinking Agent: Utilized to improve the thermal and mechanical properties of various polymers through crosslinking reactions.
• Specialty Coatings: Formulated into coatings that require exceptional resistance to chemicals, heat, and wear for industrial equipment.

Basic Information

Product Name	Polymaleimide
CAS No.	25721-74-8
Molecular Formula	(C4H3NO2)n
Molecular Weight	Contact for details
Synonyms	Poly(maleimide); Maleimide polymer; Poly(N-methanoylethenamine); Poly(1H-pyrrole-2,5-dione); PMI; Bismaleimide oligomer (BMI); Polyimide precursor; Thermosetting polyimide resin
EINECS	Contact for details

Quality Control

Our Polymaleimide is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive quality assurance, with products tested against relevant industry specifications. Certificates of Analysis (COA) detailing purity, molecular weight distribution, and other critical parameters are available for every shipment 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). The product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	Yellow to light brown powder or granules
Identification (IR)	Conforms to structure
Assay (as Polymaleimide)	≥ 95.0%
Melting Point / Glass Transition Temp (Tg)	Contact for details
Volatile Matter	≤ 2.0%
Solubility	Soluble in polar aprotic solvents (e.g., DMF, NMP)

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