Abstract
In order to understand the structural basis of the observed properties of benzoxazine materials, the technique of quantitative structure-property relationships can be applied to sets of monomers or polymers and the understanding gained can then be used to design new monomers or polymers with the desired properties. In the chapter, this technique is applied to some datasets to predict char yield and glass transition temperature, and to illustrate that, despite the limited nature of the datasets currently available, useful predictions can be made.