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Reports on the preparation of some organic corrosion inhibitors, carried out by the reaction of epoxidized linseed oil free fatty acids with different aliphatic amines under the effect of γ‐ray irradiation. Notes that chemical and instrumental methods were used for identification of the reaction products and that the prepared inhibitors were tested for corrosion protection of steel surfaces by incorporating them in some chlorinated rubber varnishes. Reports that the physical, chemical and corrosion protective properties of the varnish films were studied. Concludes that the prepared inhibitors can be used in small quantities to provide varnishes of excellent adhesion and superior protective properties. Contends, also, that increase of the radiation dose during preparation of the inhibitors and/or during the drying process of the varnish films increases the protective properties of the formed films.

Introduction The application of organic coatings is the most extensive way of protecting metal products from corrosion. Developments of organic coatings and their applications are subject to the effects of many factors at present. The most important among these factors are ecological requirements aimed at the protection of the living and working environments, and the lack of raw materials and energy.

Introduction Over the last few years there have been several trials to replace inorganic corrosion inhibitors, which in organic coatings are pigments, with materials which are, in principle, organic corrosion inhibitors. This coincides primarily with the toxic properties of the anti‐corrosive pigments employed and also with the scarcity of raw materials for their production.

Over the last few years there have been several trials to replace inorganic corrosion inhibitors, which in organic coatings are pigments, with materials which are, in principle, organic corrosion inhibitors. This coincides primarily with the toxic properties of the anti‐corrosive pigments employed and also with the scarcity of raw materials for their production.

This article has been withdrawn as it was published elsewhere and accidentally duplicated.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.

This article has been withdrawn as it was published elsewhere and accidentally duplicated. The original article can be seen here: 10.1108/eb007183. When citing the article, please cite: S.M. El-Sawy, M.A. Abou-Khalil, N.A. Ghanem, A.A. Ismail, (1982), “Some electrochemical and water uptake measurements of laboratory prepared barium metaborate-based paints”, Anti-Corrosion Methods and Materials, Vol. 29 Iss: 1, pp. 4 - 8.

The application of organic coatings is the most extensive way of protecting metal products from corrosion. Developments of organic coatings and their applications are subject to the effects of many factors at present. The most important among these factors are ecological requirements aimed at the protection of the living and working environments, and the lack of raw materials and energy.

Barium metaborate as a new less toxic anti‐corrosive pigment was tested for protection against corrosion in an atmospheric exposure testing station set in Egypt on Alexandria seashore. Seventy paints were prepared, based on six grades of laboratory prepared barium metaborate pigments. The paints could be classified into three groups according to the type of the binder; each group comprises seven subgroups according to the pigment grade used. The paints were tested first in the laboratory and then in actual environment. Commercial barium metaborate (Busan 11‐M1) based paints were prepared and used as a blank. High corrosion protection properties are obtained for up to nine years exposure. Results showed that mixing barium metaborate pigments with neutral binder gave better results than mixing them with acidic binder. Laboratory prepared pigments gave better results than the commercial one. It was also found that corrosion protection of these pigments increases with the increase of pigment modification.

White pine wood was impregnated with a mixture of methyl methacrylate (MMA) and N‐methacryloyloxyphthalimide and by other three mixtures prepared by mixing MMA and N‐methacryloyloxytetrabromo‐phthalimide. Water uptake of treated wood was found to be 54 per cent after water‐soaking test of 168 h and maximum antiswell efficiency was found to be 48 per cent for treated wood samples with non‐brominated comonomer mixture.

Summary The present work aims to study the inhibition mechanism of barium metaborate pigments. Six grades of barium metaborate pigments were prepared in the Laboratory of Polymers and Pigments, National Research Centre of Cairo, Egypt. The methods of preparation modification and evaluation is the main subject of a recent article. The pigments were incorporated, with other ingredients, into formulations, and the electrode potential, electrical resistance, water uptake and weight loss measurements were taken. Formulations based on a commercial pigment supplied by an international company were prepared and used as blanks.