MIXTURE OF 3,1-BENZOXAZINES AND FLUORANES

摘要

The invention relates to mixtures of a) at least one 3,1-benzoxazine of the formula <IMAGE> (I) and b) at least one fluorane of the formula <IMAGE> (II) wherein the radicals of the abovementioned formulae have the meaning given in the description, and their use as color-forming agents for pressure- and heat-sensitive recording materials and to such recording materials.