The synthesis and characterization of some complexes of Cu(II), Co(II), Ni(II), and Cd(I1) with paminoacetophenone benzoyl hydrazone (AABH) were prepared. Elemental analyses, molar conductivities, pH-titrations, magnetic measurements and spectral (IR, UV, NMK and MS) studies have been used to elucidate the structure of the metal complexes. The IR spectra show that the ligand coordinates in the keto and/or enol forms. The formation constants of the Cu(II), Co(II), Ni(I1) and Cd(I1) complexes in solution were studied potentiometrically and spectrophotometrically. Spectral studies in solution show that the ligand could be used for the microdetermination of Cu(lI), Co(I1) and Ni(I1) ions within a concentration up to 44.4, 34.7 and 53.2 ppm of metals, respectively. The antimicrobial activity of AABH and its Cu(ll), Co(II), Ni(II), and Cd(1I) complexes illustrates that all of the complexes have antimicrobial activity except the complexes of Cu(I1) and Co(I1) which seemed inert against Escherichia coli. a In memory of the late Professor M. A. Khattab.1365

Lithographic resist materials based on copolymers and/or terpolymers have been synthesised. These materials are comprised of one component to induce water solubility, such as Nvinyl pyrrolidinone (NVP) or N, Ndimethyl acrylamide (DMAC); and another material to give the photoactive response, in this case allyl glycidyl ether (AGE) or glycidyl methacrylate (GMA). Copolymers and terpolymers of various compositions have been prepared by free radical copolymerization. Cationically initiated photocrosslinking was induced using mixed arylsulphonium hexaflouroantimonate (MAS+-SbF6) as a photoacid generating (PAG) species.

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Styrene–butadiene rubber (SBR) was treated with decabromobiphenyl oxide (DBBO) and/or aluminum hydroxide [Al(OH)3] as a flame retardant. The flammability of the resulting system was determined by the limiting oxygen index method. The effect of the added flame retardants on the maximum torque (MH), curing rate, and tensile properties was also evaluated. The results showed, particularly, that DBBO was a more effective flame retardant than was Al(OH)3. On the other hand, this brominated compound reduced the modulus of elasticity while its effect on the maximum torque was insignificant. Moreover, the addition of DBBO was found to decrease the curing rate of SBR. In contrast, Al(OH)3 significantly increased the maximum torque and also markedly reduced the modulus of elasticity. Moreover, the effect of the treatment with Al(OH)3 on the curing rate was found to be insignificant. The flammability measurement of the SBR treated with different mixtures of the two flame retardants indicated that the two compounds reacted slightly antagonistically. The addition of Al(OH)3 to DBBO in a mixture that was applied to SBR remedied some negative impacts on the mechanical properties when DBBO was added separately to the rubber. The value of the maximum torque of SBR increased and the curing rate slightly increased as well. Meanwhile, the values of the modulus of elasticity were not affected. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2134–2139, 2000

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