Abstract: An environmentally acceptable composition and process imparts improved corrosion resistance and paint adhesion to a conversion coated surface of zinc or zinc alloy. The coated surface is post-treated with an aqueous composition containing a thiourea compound and a vegetable tannin.

Abstract: An aqueous bath and process for the electrodeposition of bright, high-leveling nickel-iron alloy deposits on a conductive substrate comprising controlled effective amounts of nickel ions, iron ions, a bath soluble tartrate complexing agent, a reducing mono or disaccharide, ascorbic and/or isoascorbic acid, a buffering agent, a mixture of primary and secondary nickel brightening agents and hydrogen ions to provide a pH of about 2.6 to about 4.5.

Abstract: An acid zinc electroplating bath and bright zinc plating process employing said bath which contains an effective amount of a controlled mixture of brightening agents including a bath soluble polyacrylamide polymer and N-substituted polyacrylamide derivatives thereof as well as copolymers thereof as a primary brightener in combination with a secondary brightener comprising boric acid and Group I and II metal salts thereof and/or thiourea and N-substituted derivatives thereof as well as selected adducts thereof. The acid zinc electroplating bath incorporating the mixture of primary and secondary brightening agents is economical and versatile in use and produces a ductile plating deposit having a lustrous appearance.

Abstract: Disclosed is a single-application non-electrolytic method for the treatment of bare metal surfaces to form a corrosion-resistant coating. The clean metal surfaces are treated with an aqueous composition containing a melamine-formaldehyde resin and a vegetable tannin. The resulting dried coating exhibits superior qualities for a single-application coating process when used as a paint base and the process does not require the use of environmentally objectionable chromium compounds. Application to ferrous, zinc or aluminum surfaces may be by any known technique designed to provide a deposited layer of desired uniformity.

Abstract: A non-cyanide acid or substantially neutral zinc electroplating bath and zinc plating process employing said bath which contains an effective amount of a brightening and leveling agent, and which comprises a bath soluble quaternary compound formed by the reaction of heterocyclics with an alkylating agent selected from the group consisting of dialkyl sulfates, alkyl alkane sulfonates and alkyl arene sulfonates. The versatility and effectiveness of the brightening and leveling agent of this invention enables improved processing of a wide variety of articles, thereby requiring only minimal amounts of the additive agent to produce brilliant and smooth zinc deposits.

Abstract: An improved solution and process for depositing bright zinc coatings employing an aqueous solution containing zinc ions and an effective amount of a brightening agent comprising a bath soluble cationic alkylated condensation polymer obtained by alkylating a condensation polymer of an epihalohydrin and a heterocyclic compound containing at least 2 nitrogen atoms with a trialkyl ammonio-halo-alkyl halide salt.

Abstract: An aqueous acidic composition free of hexavalent chromium is employed to treat a metal surface. The composition contains trivalent chromium, phosphate ion and dispersed silica.

Abstract: An aqueous acidic trivalent chromium electroplating solution and process for depositing chromium platings employing a bath containing trivalent chromium, a complexing agent, a reducing agent and a controlled effective amount of an anionic or nonionic surface active agent selected from the class of organic mono- or di- or tri-ester phosphates which contributes to improve operating characteristics and efficiency of the electroplating bath and enhances the uniformity of the chromium deposit.

Abstract: A chromium-free treatment for aluminum imparts corrosion resistance and paint receptivity to the surface. The process is sequential and includes a first contact with an aqueous alkaline solution (pH above 10) containing complexed iron ion, water rinsing, and then contact with an aqueous acidic organic tannin-containing composition.

Abstract: A water emulsifiable lubricant and coolant for the cold forming of metal, as in the forming and stamping of sheet metal parts and in the drawing of wire. The composition has superior lubricant and coolant properties and also imparts some degree of corrosion protection for the part after forming. The composition contains oleic acid, an ethanolamine, a mixture of mineral oils or a mixture of mineral oil with a wax, and a mixture of emulsifiers. The emulsion is stable at various strengths and at pH values ranging from 7.0 to 9.5, thus being useful with various plated or coated metals, as well as with uncoated metals.An example of the lubricant is as follows:Lubricant(a) water base(b) oleic acid(c) ethanolamine(d) heavy mineral oil(e) dialkylphenoxypoly (ethyleneoxy) ethanol(f) sodium salt of alkylpolyoxyethylene phosphate ester, and(g) a member selected from the group consisting of light mineral oil, paraffin wax, oxazoline wax.

Abstract: An aqueous acidic oxidant-free zinc phosphate solution contains tartaric acid, citric acid and/or a salt of either. At a pH of about 3.5 to 4.7, the solution produces a microcrystalline coating of zinc phosphate on iron or steel. The solution preferably contains nickel ion also.

Abstract: An apparatus and a process for conveying articles on an elongated rail formed with a plurality of ports therein, which are disposed in communication with a plenum connected to a supply of pressurized fluid for discharge through said ports for supporting and conveying an article along said rail on a cushion of fluid. In accordance with one embodiment of the invention, each of the ports incorporates an apertured disc incorporating deflection means thereon for controlling the quantity and fluid flow pattern discharged from each port. In accordance with another embodiment of the invention, the apparatus is of a modular construction comprising individual sections, each comprising a rail enclosed within a housing including duct work for recovering a controlled proportion of the fluid discharged from the rail and effecting a recirculation thereof through the fluid supply means for reuse.

Abstract: An improved process for forming a zinc phosphate coating on a zinc surface comprises contacting the surface with an aqueous nitrate and ammonia-free solution containing zinc, phosphate, nickel or cobalt, and hydrogen peroxide.

Abstract: Disclosed is a composition and process useful for improving the corrosion resistance and/or paint adhesion of an aluminum surface. The composition is an aqueous acidic one containing an organic film-forming polymer and a titanium compound in a weight ratio of polymer : Ti of 100 : 1 to 1 : 10. The aluminum surface is contacted with the composition at a temperature not in excess of 70.degree. C.

Abstract: The present invention is directed to an aqueous bath for the electrodeposition of bright metal deposits, and is more particularly concerned with a bath composition which provides upon the basis metal an electrodeposit having improved brightness, superior adhesion to the substrate, and as well, a condition of ductility markedly better than that obtained from certain prior art baths. The electroplating bath composition of this invention includes therein a sulfamalkylated polyamine which is a reaction product containing nitrogen substituted alkyl sulfamate units represented by the general formulae: ##STR1## WHERE M = H, Li, Na, K or NH.sub.4,R = aryl, alkyl of 1 - 4 carbons,N = 2 to 3,M = 0 to 3, andX = 7 to 2400.

Abstract: A novel acidic etching bath composition is disclosed consisting of an acid e.g. sulphuric acid and an unsaturated alcohol e.g. but-2-ene-1,4,-diol, allyl alcohol, propargyl alcohol or but-2-yne-1,4-diol. Etching plating and enamelling procedures are disclosed for producing enamel coatings with improved adhesion to steel substrates.

Abstract: Disclosed is a corrosion inhibitor for metal surfaces. The surface is contacted with an alkaline aqueous solution containing a reaction product of an aliphatic carboxylic acid, a polyhydroxy carboxylic acid and an alkanol amine.

Abstract: Disclosed is a process for cleaning and treating an aluminum surface to improve the corrosion resistance and paint receptivity of the surface. The treating composition is an aqueous vegetable tannin composition, and the cleaning composition is an aqueous acidic fluoride containing cleaner.

Abstract: Disclosed is a process wherein a conversion coated zinc or zinc alloy surface is post-treated with an aqueous solution comprising at least 0.02 g/l titanium ion and at least 0.1 g/l of an adjuvant selected from phosphoric acid, phytic acid, tannin, the salts and esters of the foregoing, and hydrogen peroxide.

Abstract: A composition and method for electrodepositing ductile, bright, well leveled copper deposits from an aqueous acidic copper plating bath having dissolved therein from about 0.04 to about 1000 milligrams per liter of a poly (alkanol quaternary ammonium salt) formed as the reaction product of a polyalkanolamine with an alkylating or quaternization agent. The polyalkanolamine constituent typically is formed as the reaction product of a polyalkylenimine (e.g. polyethylenimine) with an alkylene oxide.