Nexam Chemical offers a series of crosslinkers to be used in the formulation of reactive oligomers/polymers with a restricted molecular weight and latent cross-linking units. These intermediates can be easily processed and properties associated with high molecular weight structures can be reclaimed upon a curing step.
The classical high curing activation temperature associated with this technology has restricted its use to processing improvements of resins with very high thermal stability. This limitation is now addressed in our NEXIMID® portfolio, where proper structural design has resulted in a series of cross-linkers covering a broad range of activation temperatures. As a result, highly thermoplastic formulations with lower thermal stability can benefit from this technology, broadening the focus from processing improvement of polyimides to rising performance of different kind of materials.
Co-monomers for polyimides. Nexam Chemical offers two high-purity di-anhydrides suitable for polymer synthesis: NEXIMID 800 (6FDA) and NEXAMITE B02 (PMDA). In addition, NEXIMID 700 a formulation of trans-1,4-cyclohexyl diammonium acetate, is offered to address the difficult incorporation of cycloaliphatic trans-1,4-cyclohexanediamine into polyimide formulations.