Technical documentation

An adhesive cement is prepared by coating an aluminosilicate glass ionomer with an acid polymerization inhibitor of pKa between 2-3.5, and then mixing the treated glass with cyanoacrylate monomer and water. The glass is treated by dissolving the acid, typically tartaric, tartronic, malic, maleic or mellitic acid in methanol and adding the glass powder to form a slurry, then evaporating the methanol.

New organogelator, N,N′-bis(3,4,5-tridodecyloxy)benzoylurea (1), gelled organic liquid such as alcohol, hydrocabons, ethyl acetate, salad oil, terpenes, and essential and perfume oil at low concentration of gelator. The terpene and perfume gels show good release of the volatile components for a long time.

Arjunolic acid, a triterpenoid, renewably resourced from Terminalia arjuna saw- dust, has the potential of being used as a structural molecular framework in supramolecular chemistry and nanoscience. The nanosized chiral triterpenoid on derivatization could immo- bilize varieties of organic solvents at low concentrations. The low-molecular-mass organic compounds self-assembled in organic media to form fibrous network structures having fibers of nano- to micrometer diameters. A dual-component supramolecular gelation has been demonstrated, exhibiting interesting thermochromic property.

Five 1-O-methyl-4,6-O-ben- zylidene derivatives of the monosac- charides d-glucose, d-galactose, and d- mannose were synthesized. The b-iso- mer of the d-glucose derivative was sparingly soluble in most organic sol- vents, whereas the a-isomer of the d- mannose derivative was soluble in many organic solvents. The a-isomer of the d- glucose derivative and the a- and b- isomers of the d-galactose derivative acted as versatile gelators of various organic solvents ; this indicates that sac- charides are useful as potential tem- plates for the molecular design of chiral gelators.