The Preparation of Polytriazole Resins

Crosslinkable polytriazole resins have been prepared by prepolymerization of multifunctional azides with multifunctional alkynes. A variety of multifunctional azide (A. or A., i = 2, 3) and alkyne monomers (Bj, j = 3,4 or B. j = 2, k = 1,2,3. 5) used in the synthesis or preparation of the polytriazole resins are also listed in Table 8.1. The produced polytriazole resins made from the multifunctional azide (A or Ay and alkyne monomers (B., or B ) are separately designated as AjBj or A. B.or A.Bj or A. B.. The crosslinkable polytriazole resins could be cured at 70°C for 12 h. Thereafter, the solid resins were further postcured at 120°C for 2 h, 150°C for 2 h, and 180°C for 2 h to obtain well-cured resins. 

5-tris(azidomethyl)-2,4,6-trimethyl- benzene(Aj) CH2N3 N3H2C y CH2N3 CH3 4,4 -dipropargyloxydiphenylpropane (B ) 

A3B3 1, 3, 5-tris(azidomethyl)-2,4, 6-trimethyl-benzene(A,) N,N-dipropargyl-4-propargyloxyaniline (B ) 

Note T stands for a top temperature for the exothermal peak on a DSC curve. 

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