Polybenzoxazines are known to have superior thermal stability. Especially, the use of aromatic aldehydes instead formaldehyde for synthesis benzoxazines monomers could improve this However, increase in content monomer can prevent processability. The objective article is understand relationships between conformation an dialdehyde and its properties. Two benzoxazine were synthesized, based on sal...

Aminomethylation of trifunctional 2.5-dihydroxyacetophenone (2.5-DHA) and 2.4-dihydro¬xy¬aceto-phenone (2.4-DHA) by free primary secondary amines in the presence formaldehyde has been conducted for first time. It established that 2.5-DHA is aminomethylated with heterocyclic - piperidine morpholine aqueous solution alcohol medium at 500C. The reaction proceeds simultaneously via all three functi...

A series of benzoxazine monomer supramolecules with different substituted groups on their benzene ring was prepared with a Mannich reaction and characterized by FTIR, 1H-NMR and MS. The obtained products were 3,4-dihydro-3-(2'-hydroxyethylene)-6-methyl-2H-benzoxazine (BM1), 3,4-dihydro-3-(2'-hydroxyethylene)-6-ethyl-2H-benz-oxazine (BM2), and 3,4-dihydro-3-(2'-hydroxyethylene)-6-methoxy-2H-benz...

Hydrophobicity and oleophobicity are highly desirable properties for materials that are used in a wide range of applications. In this context, poly(tetrafluoroethylene) (teflon) is considered to be the “benchmark” low-surfacefree-energy material as it combines water repellence with other desirable properties. Unfortunately, the use of teflon comes with certain disadvantages, such as those resul...