Henkel Corporation

Henkel Ag & Company, Kgaa

Amchem Products, Inc.

Henkel Kgaa

Gerhard Collardin Gmbh

Bashir M Ahmed

Omar Lufti Abu-Shanab

William E Fristad

Manesh Nadupparambil Sekharan

William G Kozak

Nicholas Herdzik

Christopher G Weller

Derek W Smith

Brian J Marvin

Michael Inch

Omar Lutfi Abu-Shanab

Shawn E Dolan

John D McGee

Wilbur S Hall

Barry P Gunagan

Libin Du

Xueting Qiu

Girdhari Kumar

Joseph C Donovan

Lutz Schellenberg

Thomas R Hopkins

Christina M Haas

Matthias Hamacher

Umesh D Harkal

Tsehaye N Eyassu

Kristina M Tkacz

Carlos Gonzales

Robert G Hart

Marc Gomez

Rohitha M Jayasuriya

Manesh Nadupparambil Sekharen

Douglas A Brown

Derek A Hickey

Ryan M Cooke

Ming Siong Kam

Brian Marvin

Nadupparambil Sekharan Manesh

Pen-type hazardous material applicators are provided useful in applying metal pretreatment material to intricate geometries, such as blind holes, through holes, rivets, crevices, chamfers, counterbores, countersinks and other difficult to access surfaces are provided.

Applicator for hazardous materials

Autodeposition coating compositions that deposit uncured coatings, on metallic surfaces of a substrate, which are curable at oven temperatures of less than 130&#xb0; C., are provided as well as autodeposition methods, compositions and components for depositing such autodeposition coatings. More particularly, the invention relates to autodeposition coatings that cure at temperatures lower than conventional autodeposition coatings, while achieving chemical and corrosion performance comparable to higher temperature cure autodeposition coatings, as well as being directed to autodeposition coating compositions possessing improved storage stability and coating thermal stability, and articles of manufacture having cured and uncured autodeposited coatings deposited thereon.

Low bake autodeposition coatings

This invention relates to an autodeposition bath composition comprising a nitrogen containing compound, said bath being suitable for generating a uniform autodeposition coating on two or more of ferrous, aluminum, magnesium and zinciferous multi-metal substrate surfaces, treated either sequentially or simultaneously. The invention also provides autodeposition concentrate compositions for use in the bath, methods of making and using the concentrate and bath, as well as metal articles comprising an autodeposition coating according to the invention.

Single bath autodeposition coating for combination metal substrates and methods therefor

A coated article comprising a metal surface, a first layer of an uncured autodeposition coating and a second uncured paint layer deposited sequentially on the surface without intermediate curing of the autodeposition coating, a process of co-curing said autodeposition coating and paint layer or layers, and a cured coated article having chemical bonds between the cured autodeposition coating layer and at least the cured paint layer immediately adjacent to the cured autodeposition coating layer.

Co-cure process for autodeposition coating

A method for coating a metal substrate with a white, off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

Off-white and gray autodeposition coatings

Coating bath compositions and processes useful in depositing organic polymeric coatings on metal substrates at low voltages are provided, the baths comprising one or more dispersed organic film forming polymers; and an etchant; wherein the principle film forming polymer is stabilized in the bath by the presence of anionic surfactant, but can be readily anodically deposited under low voltage. The invention also relates to processes of depositing a coating and metal substrates coated using the baths and processes of the invention.

Electrodeposition of an autodepositable polymer

A method for coating a metal substrate with a white to off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

A composition for coating a metal substrate with a white to off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

The susceptibility to heat degradation of an autodeposited coating in which the principal organic constituents are copolymers of vinylidene chloride in which vinylidene chloride residues constitute at least half the weight of the total binder phase in the autodeposited coating is improved if the wet autodeposited coatings are rinsed, before being later dried and cured, with a water-based liquid rinse that comprises dissolved phosphate ions in a concentration that corresponds stoichiometrically to at least 0.5 g/l of tripolyphosphate ions. The water-based liquid rinse preferably has a strongly alkaline pH and also comprises dissolved organic molecules that are effective chelating agents for dissolved iron cations by reason of having in each molecule at least two carboxyl, carboxylate, and/or other hydroxy moieties.

Autodeposited coating with improved thermal stability and composition

The use of selected cation exchange resins to remove dissolved multivalent cations ions such as iron, zinc, and chromium from used autodeposition compositions permits reuse of the autodeposition compositions without the need for added surfactant and without developing any undesirable graininess or other texture in the coatings formed. Iminodiacetate cation exchange resins are very effective for removing iron ions when they are the only multivalent ions to be removed, and can be efficiently regenerated with 0.5 to 4% by weight aqueous hydrofluoric acid. By proper choice of other cation exchange resins and operating conditions, zinc can be selectively extracted from autodeposition baths containing both iron and zinc, and either iron or zinc can be selectively displaced from the loaded ion exchange resin.

Process for separating multivalent metal Ions from autodeposition

A reaction rinse containing strong alkali, betaine surfactants, and a complexing agent for iron enhances the gloss of a dried and cured autodeposited coating that is contacted with the reaction rinse while still wet, particularly if the autodeposited coating consists predominantly of a copolymer of vinylidene chloride.

Spotting resistant gloss enhancement of autodeposition coating

Apparatus for use in an ion exchange unit or column comprising a riser pipe, a port coupled to one end of said pipe, a first rigid cylinder having apertures therein mounted concentrically on the pipe, a port coupled to the space between the pipe and said cylinder, a mesh sleeve concentrically mounted about the cylinder, a sieve mounted about the mesh sleeve, a second rigid cylinder concentric with the pipe and near its outer end, a second mesh sleeve mounted about said second rigid cylinder and a sieve bag containing the second mesh sleeve. The aperture size in said sieve material is only sufficiently fine to prevent the passage of ion exchange resin beads.

Sieve system for an ion exchange column

An apparatus and method is provided for automated periodic removal of metal ions and contaminants from a chemical bath comprising a latex solution containing charged latex particles and having an acidic pH, used for forming a coating by autodeposition. The system includes a tank containing a chemical bath, an ion exchange column for removing the metal ion contaminants, circulating pump, metal composition sensors, and equipment for regeneration of the ion exchange column. The system particularly includes a filter located at the inlet to the ion exchange column for removing solid particulates, including coagulated latex and debris from the coating solution, while permitting the uncoagulated latex particles to pass through to the ion exchange column.

Apparatus and method for maintaining a stable bath for an autodeposition

The quality of coating in autodeposition from solutions in which the coating is predominantly derived from epoxy resins can be improved in two ways, which can be used jointly or separately: A blocked isocyanate is used as cross linking agent for the epoxy resin, and a surfactant that prevents the occurrence of phase separation during drying of the coating is used. Preferably the surfactant is a fluoroaliphatic polymer ester.

Growing community of inventors

Rochester, MI, United States of America

Bashir M Ahmed