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Assignee: Parker Chemical Company


Location: MadisonHeights, MI
No. of patents: 25

NumberTitleIssue Date
4812175Passivation process and copmposition for zinc-aluminum alloys
An aqueous acidic treating solution and process for forming a chromium-containing passivate coating on the surface of zinc or zinc-aluminum alloys to enhance bare corrosion resistance and inhibit discoloration thereof upon exposure to ambient environments...
03/14/1989
4726848Chlorinated hydrocarbon protective and/or decorative coating stripping composition and method
Described is a composition capable of stripping protective and/or decorative coatings from a substrate comprising: a major amount of a chlorinated hydrocarbon having from one to four carbon atoms; a minor amount of a carboxylic acid accelerator useful for acce...
02/23/1988
4722753Alkaline resistant phosphate conversion coatings
A method for increasing the resistance to alkaline dissolution of a phosphate conversion coating on a corrodible metal surface by an improved zinc phosphate conversion coating together with articles coated by this method are disclosed. The substrate is ex...
02/02/1988
4713121Alkaline resistant phosphate conversion coatings
A method for increasing the resistance to alkaline dissolution of a phosphate conversion coating on a corrodible metal surface by an improved zinc phosphate conversion coating together with articles coated by this method are disclosed. The substrate is ex...
12/15/1987
4647316Metal base coating composition comprising chromium, silica and phosphate and process for coating metal therewith
Disclosed is an aqueous metal treatment composition comprising: (a) a hexavalent chromium compound; (b) a compound selected from the group consisting of silica and silicates and mixtures thereof and (c) phosphate. Preferably, the composition also comprise...
03/03/1987
4617068Composition and process for treatment of ferrous substrates
A composition and process for treating ferrous substrates including black plate container bodies to inhibit in-process corrosion or rusting of the surfaces thereof by contacting the ferrous substrate with aqueous acidic composition containing controlled e...
10/14/1986
4612060Process for controlling zinc phosphate treating solutions
A process for controlling the zinc or zinc and nickel content of a zinc phosphate conversion coating solution employs the addition of EDTA and titration with calcium ion using a calcium ion electrode. Preferably to a second sample is added EDTA and a thio...
09/16/1986
4599116Alkaline cleaning process
An aqueous alkaline cleaning composition and process for cleaning aluminum container surfaces in a manner to inhibit objectionable white-etch staining during prolonged cleaning cycles and brown oxide discoloration during prolonged rinse cycles in which th...
07/08/1986
4597888Cleaner for steel cans
An alkaline cleaner particularly useful for cleaning steel cans containing an alkali metal silicate, an alkali metal phosphate, a sequestering agent, an ethoxylated linear alcohol and a chloride derivative of a polyethoxylated phenol or a polyethoxylated ...
07/01/1986
4597806Process for maintaining the zinc content in zinc phosphate baths
In a process for maintaining a given zinc content in nickel-containing zinc phosphate baths, (a) nickel is precipitated in a bath sample by addition of dimethylglyoxime, a soluble copper complex compound is added and the liquid is then titrated against a ...
07/01/1986
4595424Method of forming phosphate coating on zinc
Disclosed is an improved method for coating a zinc surface comprising treating said surface with an aqueous, acidic solution containing: (a) about 0.5 to about 4 percent phosphate ion; (b) an ion selected from the group consisting of zinc ions, manganese ions, ...
06/17/1986
4559087Process for phosphating metals
In a process for phosphating composite metals containing steel and zinc surfaces using phosphating solutions based on zinc phosphate by the dipping process, in order to achieve satisfactory formation of the phosphate layer, the composite metals are subjec...
12/17/1985
4539051Process for producing phosphate coatings
An improved process for activating metal surfaces prior to a phosphating treatment whereby relatively thin, dense, fine-sized and uniform crystalline adherent phosphate coatings are produced providing superior corrosion protection and paint adherence when...
09/03/1985
4533639Test method for phosphate coatings
A method for determining the coating weight and composition of a zinc phosphate coating on a ferrous metal surface comprises stripping the coating from a known area using an aqueous solution of sodium hydroxide and triethanolamine, thereafter measuring th...
08/06/1985
4532309Water-based epoxy resins stable to hydrolysis
A stable water soluble epoxy resin suitable for use as a coating material is made by grafting an acid functional vinyl monomer onto unsaturated functional sites on an epoxy resin backbone....
07/30/1985
4517029Process for the cold forming of iron and steel
Iron and steel articles to be subjected to a cold forming operation are treated with a phosphatizing solution to form a zinc phosphate film on the surface, which film contains from about 5 to 80% by weight of the total film of zinc calcium phosphate. Ther...
05/14/1985
4517028Treatment of metal with derivative of poly-alkenylphenol
A metal surface is treated by contacting the surface with a solution comprising an effective amount of a soluble or dispersible treatment compound selected from the group consisting of a polymer having the following general formula, acid salts thereof, an...
05/14/1985
4509992Processes and compositions for the treatment of aluminum surfaces
A composition for forming paint-base coatings on aluminum comprising an aqueous solution having a pH of from about 9 to about 12.5 and containing an effective coating forming amount of a complexing agent which has at least one of a nitrogen atom with a lo...
04/09/1985
4498935Zinc phosphate conversion coating composition
An aqueous acidic zinc phosphate coating composition for treating a metal surface to provide a conversion coating thereon, the composition comprising chlorate anion and an aromatic nitro anion in a weight ratio of less than 2:1 to about 1:10....
02/12/1985
4496374Compound and process for denaturing high solids paints
An improved composition and process for denaturing or "killing" captured high-solids paint particles in aqueous wash solutions employed in gas scrubbing devices such as paint spray booths for extracting entrained particulated contaminants from the exhaust...
01/29/1985
4496404Composition and process for treatment of ferrous substrates
A composition and process for treating ferrous substrates including black plate container bodies to inhibit in-process corrosion or rusting of the surfaces thereof by contacting the ferrous substrate with aqueous acidic composition containing controlled e...
01/29/1985
4478647Process for the treatment of spent pickling paste
A process for treating spent fluoride-containing pickling paste on metal surfaces by applying to the spent pickling paste on the metal surface an aqueous treating paste composition comprising calcium carbonate having a particle size not in excess of about...
10/23/1984
4465816Stable water-borne epoxy resin
A stable, water soluble epoxy resin suitable for use as a coating material is made by grafting a thio-acid onto an unsaturated functional site on an epoxy resin backbone....
08/14/1984
4457790Treatment of metal with group IV B metal ion and derivative of polyalkenylphenol
A treatment solution for contacting a metal surface comprises: from about 0.001% to about 1.0% of a metal ion selected from the group consisting of titanium, zirconium and hafnium and mixtures thereof; and an effective amount of a soluble or dispersible treatment c...
07/03/1984
4433015Treatment of metal with derivative of poly-4-vinylphenol
An aqueous solution comprising an effective amount of a water soluble or water dispersible compound selected from the group consisting of a polymer having the following general formula, acid salts thereof and mixtures thereof: ##STR1## where: n=...
02/21/1984
 
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