Torlon® 4000T is a neat resin polyamide-imide (PAI) coarse powder designed for compounding with other polymers and specialty additives. It is the base resin utilized in all Torlon injection molded compounds. Its powder form enables designers to enhance custom compounds and specialty applications with the well-known properties of Torlon polyamide-imide, from its unstoppable performance under extreme conditions to excellent resistance against wear, creep and chemicals. A fine-particle powder version, Torlon® 4000TF, is also available, which is particularly well suited for compression molded parts. A water soluable analog of Torlon® 4000T is available as Torlon® AI-50. Torlon® 4000T has been shown to be useful in blends with polyphenylsulfone (PPSU), polyethersulfone (PES), polysulfone (PSU), polyetheretherketone (PEEK), high-temperature sulfone resins, self-reinforced polyphenylene, polybenzimidizole (PBI), polyimide (PI), polyetherimide (PEI), and polyphenylene sulfide (PPS). Besides blending with other polymers to enhance properties, Torlon® 4000T powder may be compounded with a wide variety of performance fillers, reinforcements, specialty additives and colorants to meet the desired need. The resultant compound may then be injection molded or extruded into film, shapes or fiber. In addition to molded components, Torlon® PAI powders are suitable for use in other high performance forms. For example, these powders are soluble in dipolar aprotic solvents such as N-methyl pyrrolidone (NMP), dimethylacetamide (DMAC), dimethylsulfoxide (DMSO) and dimethylformamide (DMF). Solutions of these systems can be sprayed into coatings, cast into films, spun into fibers and cast or spun into specialty membranes. High strength, high temperature capable adhesives can be also formulated from Torlon® PAI powders. Torlon® PAI powders may be incorporated into epoxy and other thermoset systems to provide additional strength, ductility and heat resistance. Torlon® 4000T powders are available in 3 viscosity grades, which are defined by the inherent viscosity (IV) ranges shown in the accompanying data. 
  • Low viscosity: 4000T-LV 


  • Global Business Unit
    Specialty Polymers
  • Brand
  • Synonyms


Segments Applications
Printing, Inks & Adhesives Adhesives
Chemical Industry Chemical Engineering
Industrial Equipment Industrial Equipment Parts | Pipes, Pumps, Fittings & Valves
Segments Applications
Electrification Battery Systems
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Energy savings Cooling & Heating systems | Thermal insulation
Resource Efficiency Electricity Generation | Plumbing & Heating
Protection & Safety Fire Protection | Mastics & Sealants
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Process Efficiency Fab Process Equipment
Enhanced Design & Connectivity Semiconductors & memory
Safety Wire & Cable
Segments Applications
Household Goods Power Tools & Garden
Sports & Leisure Sports & Leisure
Textiles & Fibers Textiles & Fibers

Chemical categories

Chemical category Chemical family Chemical product
Specialty Polymers Polyamide-imides PAI (Polyamide-imide)

Region of commercial availability

  • Asia / Pacific
  • Europe / Middle East / Africa
  • North America
  • Latin America

Download documentation for Torlon® 4000T