carboxylic acids are the type of polymers that have the ester functional group.
carboxylic acids are the type of polymers that have the ester functional group.
what type of polymers have the ester functional group?
carboxylic acids
section::::cyanate ester resins.









































the reaction of bisphenols or multifunctional phenol novolac resins with cyanogen bromide or chloride leads to cyanate functional monomers which can be converted in a controlled manner into cyanate ester functional prepolymer resins by chain extension or copolymerization. when postcured, all residual cyanate ester functionality polymerises by cyclotrimerisation leading to tightly crosslinked polycyanurate networks with high thermal stability and glass transition temperatures up to 752 °f (400 °c) and wet heat stability up to around 400 °f (200 °c).
thermoset polymer matrix
active ester









































in organic chemistry, an active ester is an ester functional group that is highly susceptible toward nucleophilic attack. activation can be imparted by modifications of the acyl or the alkoxy components of a normal ester, say ethyl acetate. typical modifications call for electronegative substituents. active esters are employed in both synthetic and biological chemistry. 









































section::::reactivity.
active ester