6025-08-7

Novel triply hydrogen bonded suprastructures based on [M-(tdpd) 2(L)2]2- (H2tdpd= 1,4,5,6-tetrahydro-5,6-dioxo-2,3-pyrazinedicarbonitrile, L = solvent) and melamine-analogous cations have been synthesized and characterized. The use of anions containing two AAA sets from [M-(tdpd)2(L)2] 2 together with cations containing one ODD set (A = hydrogen-bond acceptor, D = hydrogen-bond donor) leads to the formation of complementary triply hydrogen bonded modules in the solid state. In all cases, the building module is further extended via additional hydrogen-bonding in teractions to produce a tape, and tapes are assembled into sheets. These results show that a hydrogen-bonded module consisting of different kinds of building blocks, one of which is a metal complex that includes hydrogen-bond acceptor sites and the other is a hydrogen-bond donor molecule, will be attractive for constructing metal-containing supramolecular systems by the self-assembly technique.

A process for making solid colored particles by preparing a reaction solution in water comprising formaldehyde, urea, a cyclic polyamine functional triazine compound, and acid. A dye can be incorporated into the reaction solution if a color other than white is desired. Particles are formed having an average particle size between 1 and 70 microns without the need to resort to crushing to break up agglomerates. Particles made by this process provide excellent color and are easily washable from a substrate when incorporated into a washable formulation. Additionally, it has been found that the incorporation of colored microcapsules of average size of 1-70 microns where the color is located primarily on or in the shell of the microcapsule also provides excellent washable compositions when incorporated into a washable formulation.