摘要 |
This invention relates to syntheses for the preparation of benzoxazine, including benzoxazine monomers and benzoxazime oligomers, from phenolic compounds, aldehyde compounds, and either primary diamine compounds, such as diamino alkylene compounds, e.g., methylene diamine, or diamino arylene compounds, e.g., phenylene diamine, using water, and optionally an organic solvent, as the reaction solvent. |