Abstract:
A composition which comprises (a) a salt of monovalent metal (M) of a carboxylic acid in which the COOH group is attached to a ring atom of a fused ring system and (b) a grease which is a non-soap thickened oil which may be a mineral oil or a synthetic oil such as a silicone oil. The metal (M) may be sodium. The fused ring system is preferably a fused aromatic hydrocarbon ring system such as naphthalene and may include further substituents, for example an -OH group, in addition to the COOH group. If the acid contains both OH and COOH groups, these can be attached to adjacent atoms of the fused ring system. Sodium 2-naphthoate and sodium 3-hydroxy-2-naphthoate have been found to be particularly suitable. The grease has improved corrosion resistance and the addition of the metal compound does not result in destructing of the grease.
Abstract:
1-Thiocyanato-8-substituted naphthalene compounds and their use as biocides, especially for protecting aqueous media against infection by micro-organisms.
Abstract:
A composition containing a substituted cyclic anhydride and a hydroxy-oxime. The cyclic anhydride may be a succinic anhydride derivative such as dodecenyl succinic anhydride or a polymer containing cyclic anhydride groups such as polyisobutenyl succinic anhydride. The oxime may be 2-hydroxy-5-nonylbenzaldoxime or 2-hydroxy-5-nonylacetophenone oxime. The composition may be used to inhibit corrosion of metals, particularly iron. The composition may also include further components which are effective to reduce metal corrosion.
Abstract:
Novel ammonium salts of organo-oxyphosphorus acids, organo-thiophosphorus acids and their esters and to the use thereof as additives for lubricants, especially for providing protection against extreme pressure and corrosion, to compositions containing these novel salts, a method for lubricating metal surfaces in frictional contact, and a metal surface treated with the salt or lubricant composition.
Abstract:
A composition comprises a poly(oxyalkylene)glycol derivative and a long chain anhydride and optionally a hydroxy-oxime. The long chain anhydride can be an alk(en)yl succinic anhydride in which the alk(en)yl group contains at least six carbon atoms. The optional hydroxy-oxime can be an alkyl-substituted benzaldoxime. The composition has improved corrosion resistance and can provide protection of a metal even in the form of a thin film.
Abstract:
A composition which comprises (a) a salt of a metal (M) of a hydroxycarboxylic acid in which the OH and COOH groups are attached to the ring atoms of a fused ring system and (b) a surface coating compound or composition. The metal (M) is at least divalent and may be magnesium, calcium, barium or particularly zinc. The fused ring system is preferably a fused aromatic hydrocarbon ring system such as naphthalene. The OH and COOH groups can be attached to adjacent carbon atoms of fused hydrocarbon ring system. Zinc 3-hydroxy-2-naphthoate has been found to be particularly suitable. The composition may also include a metal oxide and/or a metal phosphate. Component (b) can be a film forming binder system, a natural oil or a grease. The composition can be coated onto the surface of a metal. The coated metal shows improved resistance to corrosion.
Abstract:
This invention relates to a process for coating a surface of a metal I, such as iron, steel, zinc, copper, tin or aluminum with a hydroxy oxime complex of metal II which may be lead of zinc. The complex can be incorporated in a surface coating composition.
Abstract:
A method for the inhibition of corrosion of metals involves treatment of the metal surface with a polyester having a functional terminal group such as an amine. The polyester may be used together with other corrosion inhibitors, a useful combination being the polyester together with a hydroxy-oxime. The corrosion inhibiting material may be incorporated into a surface coating composition such as paint which is then applied to the metal surface.
Abstract:
A process which comprises contacting the surface of a metal with an alkyl or acyl substituted catechol.The contacting may be effected using the substituted catechol alone or in a suitable medium for example as a solution or emulsion. The contacting is effective in providing corrosion inhibition even with lightly rusted iron surfaces.
Abstract:
The invention relates to a process for contacting a surface of a metal I such as iron, steel, zinc, cooper, tin or aluminum with a hydroxy oxime complex of metal II which may be zinc or lead. Said complex may be incorporated in a surface coating composition.