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Modifies short and medium alkyd resins using perfluori‐nated urethane toluene isocyanate (PFUTI), and incorporates the modified resins in a set of paint formulations containing different ratios of zinc phosphate as an inhibitive pigment. Achieves promising results and illustrates corrosion‐protective properties in various paint formulations and also a paint formulation free of the inhibitive pigment. Shows enhancement of the corrosion protection efficiencies by the improvement in the hydrophobicity of alkyd resin modified with PFUTI. In view of these results, minimizes or neglects the most expensive inhibitive pigments from an economical standpoint.

Short and medium alkyd resins were modified using perfluorinated urethane toluene isocyanate (PFUTI). The modified resins were incorporated in a set of paint formulations containing different ratios of zinc phosphate as an inhibitive pigment. Promising results were achieved and corrosion protective properties were illustrated in various paint formulations and also in a paint formulation free of the inhibitive pigment. The corrosion protection efficiencies were enhanced by the improvement in the hydrophobicity of alkyd resin modified with perfluorinated toluene isocyanate (PFUTI). These results encourage us to minimize or neglect the most expensive inhibitive pigments from the economic point of view.

Results and discussion Adsorption isotherms of stearic acid on the surface of manganese ore samples:

This article has been withdrawn as it was published elsewhere and accidentally duplicated. The original article can be seen here: 10.1108/eb043004. When citing the article, please cite: S.M. El-Sawy, F.A. Abdel Mohdy, M.A. Abd El-Ghaffar, (1993), “Highly efficient anticorrosive water-borne paints”, Pigment & Resin Technology, Vol. 22 Iss: 1, pp. 4 - 11.

The corrosion protective properties of the primer films prepared from Egyptian manganese ore (high and medium grades) and epoxy resin have been determined by immersing coated films in artificial sea water for 28 days. The good corrosion protective properties indicate that the Egyptian manganese ore can be satisfactorily used in anticorrosive primer formulations for steel surface protection.

The adsorption of stearic acid molecules onto the surface of the Egyptian manganese ore (high and medium grades, H.G. & M.G.) was followed by adsorption isotherm determination and the sedimentation properties of the ore in apolar medium. It was found that the sedimentation properties depend on the adsorbed amount in the isotherm, the most stable dispersion for the ore in the organic medium was detected at monolayer surface coverage of stearic acid molecules on the surface of the ore.

Highly coloured, thermally stable metal free, copper, cobalt and nickel of the hexadecachloro‐ and hexadecabromo‐phthalocyanine were synthesized by the urea fusion technique in the dry method. The structure of these compounds was confirmed via spectrophotometric measurements such as ultraviolet‐visible, nuclear magnetic resonance and infrared spectra. Evaluates the pigmentary properties of these compounds according to standard international methods. From the results reveals that these compounds have outstanding properties which allow them to be excellent pigments for various applications.

The purpose of the paper is to examine the synthesis of polyaniline (PAn) and poly(m‐toluidine) (PmT) via an inverse emulsion polymerisation pathway and evaluate of the synthesised polymers as corrosion inhibitors for steel protection in surface coatings.

PAn and PmT were prepared by inverse emulsion polymerisation using ammonium persulphate as an initiator and sodium dodecylbenzene sulphonate (SDBS) as an emulsifier. Spectrophotometric measurements were conducted to characterise the prepared polymers. Latex paint formulations were prepared and dry paint films were evaluated for their physical, mechanical and corrosion protection performance.

The prepared conducting polymers of PAn and PmT are good candidates for enhancing the corrosion protection of steel. They showed good performance as corrosion inhibitors in latex paints without bad side effects on the physico‐mechanical properties of paint films.

Recent advances in corrosion protection of steel by coatings via inverse emulsion polymerisation of aniline and m‐toluidine have improved performance of anti‐corrosive water‐borne paints. Using formulations based on this new technology, offer uncompromised high performance eco‐friendly anti‐corrosive water‐borne systems that answer the future industrial demands from the economical and environmental points of view.

PAn and PmT prepared by inverse emulsion polymerisation showed promising results as corrosion inhibitors for steel protection. The polymerisation process was conducted in water (emulsion polymerisation) and the polymer lattices were incorporated in water borne paints from ecological and economical points of view.

Itaconic acid was reacted with phenylene diamine (ortho, meta and para) and o‐tolidine in boiling dekalin, using Dean and Stark apparatus. The polymers prepared were evaluated for their suitability as antioxidants for natural rubber vulcanizates. The amide polymers prepared showed high efficiency as antioxidants for rubber vulcanizates, exceeding the performance of commercial antioxidants. In addition, the results obtained are encouraging and support the use of these polymers from both the environmental and economical points of view.

Metal free biphthalocyanine was prepared by the urea fusion method, the structure was elucidated by analytical data, infrared, proton nmr and mass spectra.