NOVELTY - p-Phenylenediamine based triazine dendrimer (A) is new.    USE - (A) is useful in drug delivery, cancer therapy, catalysis, wastewater treatment and drug solubilization, and in the preparation of encapsulated nanoparticles (claimed). No biological data given.    ADVANTAGE - (A) can be easily and rapidly prepared with high yield and without involving any protection/deprotection or manipulations of functional groups and using toxic and hazardous chemicals in a cost effective and eco-friendly manner.    DETAILED DESCRIPTION - p-Phenylenediamine based triazine dendrimer of formula (A) is new.A1 = (4,6-bis(bis(2-((4,6-bis(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)oxy)ethyl)amino)-1,3,5-triazin-2-yl) of formula (a).    INDEPENDENT CLAIMS are included for:    (1) 2-((4-((4-((4,6-bis(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amino)phenyl)amino)-6-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)-(2-hydroxyethyl)amino)ethanol (I);    (2) N6-(4-((4,6-bis(bis(2-((4,6-dichloro-1,3,5-triazin-2-yl)oxy)ethyl)amino)-1,3,5-triazin-2-yl)amino)phenyl)-N2,N2,N4,N4-tetrakis(2-((4,6-dichloro-1,3,5-triazin-2-yl)oxy)ethyl)-1,3,5-triazine-2,4,6-triamine (II);    (3) 2-((4-(2-((4-((4-((4,6-bis(bis(2-((4,6-bis(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)oxy)ethyl)amino)-1,3,5-triazin-2-yl)amino)phenyl)amino)-6-(bis(2-((4,6-bis(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)oxy)ethyl)amino)-1,3,5-triazin-2-yl)-(2-((4,6-bis(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)oxy)ethyl)amino)ethoxy)-6-(bis(2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)-(2-hydroxyethyl)amino)ethanol (III);    (4) p-phenylenediamine based triazine G2.5 dendrimer of formula (IV);    (5) (N,N'-bis(4,6-dichloro-1,3,5-triazin-2-yl)benzene-1,4-diamine) (IP);    (6) the preparation of (A);    (7) a process-I for the preparation of (IV) comprising reacting p-phenylenediamine and triazine trichloride in presence of a base and a solvent to give (IP), reacting (IP) with diethanolamine to give (I), reacting (I) with triazine trichloride in presence of a base and a solvent to give (II), reacting (II) with diethanolamine to give (III), and reacting (III) with triazine trichloride in presence of a base and a solvent;    (8) a process-II for the preparation of (III) comprising reacting p-phenylenediamine and triazine trichloride in presence of a base and a solvent to give (IP), reacting (IP) with diethanolamine to give (I), reacting (I) with triazine trichloride in presence of a base and a solvent to give (II), and reacting (II) with diethanolamine to give (III);    (9) a process-III for the preparation of (II) comprising reacting p-phenylenediamine and triazine trichloride in presence of a base and a solvent to give (IP), reacting (IP) with diethanolamine to give (I) and reacting (I) dendrimer with triazine trichloride in presence of a base and a solvent;    (10) a process-IV for the preparation of (I) comprising reacting p-phenylenediamine and triazine trichloride in presence of a base and a solvent to give (IP), and reacting (IP) with diethanolamine; and    (11) a process-V for the preparation of (IP) comprising reacting p-phenylenediamine and triazine trichloride in presence of a base and a solvent.    B1 = (4,6-bis(bis(2-((4,6-dichloro-1,3,5-triazin-2-yl)oxy)ethyl)amino)-1,3,5-triazin-2-yl) of formula (b).