IsoCoat 401 – Aromatic Polyamide-imide

IsoCoat 401 is an aqueous aromatic polyamide-imide solution which can be utilized for producing coatings where excellent chemical and thermal resistance is required.

Coatings produced from IsoCoat 401 provide:

  • Excellent thermal stability (polymer will typically withstand temperature excursions up to 240ºC)
  • High level of chemical resistance
  • Good abrasion resistance
  • FDA compliance

IsoCoat 401 Product Data

Appearance Viscous Green/Brown Liquid
Viscosity 8000-11000 mPas @ 23°C
Non-volatiles 28 – 30 %
Density ~1.05 g/mL @ 23°C
pH 8.5-10.2

These figures are given as a guide. Full specifications available on request.


IsoCoat 401 is typically used in the following applications:

  • Temperature resistant coatings
  • Binder for high temperature resistant fiber reinforced plastics
  • Bonding agent for high temperature applications up to 240°C
  • FDA compliant coatings

The excellent chemical resistance of these polymers leads to applications in container coatings, “non-stick” cookware,  electronics, and other areas. Coatings can be produced from IsoCoat 401 that meet requirements of FDA regulations 177.2450 and can therefore be used in the manufacture of cookware coatings.

Further Dilution

Use de-mineralized or distilled water as required.


IsoCoat 401 is supplied as a solution; care must be taken to enable the solvent to be removed slowly to avoid blistering of the film. During curing, the temperature of the object should be increased slowly up to the final cure temperature to avoid blistering of the coating due to final release of solvent. Final cure temperature of >220°C is required. It is advised not to mix used material with unused product for storage, although topping-off the process tank with fresh material is acceptable.


In the original sealed container these products have a shelf life of 18 months when stored below 35°C. Solution viscosity may change over time from the value reported on COA. The rate of change depends upon solvent, % solids and storage conditions. The change in viscosity does not affect polymer performance and the material can be used with no performance loss.


Information on the safe handling of this material is available on the relevant Material Safety Data Sheet (MSDS). Further information is available on request.

Regulatory Information

Specific local inquiries should be directed to Cymer, LLC. To the best of our knowledge this product meets the definition of a polymer under REACH, and its components are preregistered as substances. The material, or components, is either on the TSCA inventory list or is exempt from the requirement to be listed.


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