Flame-Resistant, Low-Temperature Curing Cyanate-Based Resins with Improved Properties

摘要

A prepolymer is prepared from a starting material a) of one or more bifunctional or polyfunctional organic cyanates; and a starting material b) of one or more bifunctional or polyfunctional aromatic alcohols and/or one or more bifunctional or polyfunctional aliphatic alcohols substituted in the aliphatic group with at least one fluorine atom, wherein the starting materials a) and b) are present in a weight ratio ensuring a molar ratio of the OCN groups to the OH groups between 95:5 and 70:30 in the starting materials a) and b). The prepolymer has a degree of crosslinking that is below the gel point of the prepolymer.