George T Vaughn

US Patent:

54589550, Oct 17, 1995

Filed:

Oct 21, 1993

Appl. No.:

8/140340

Inventors:

George D. Vaughn - Chesterfield MO
Patrick J. Kinlen - Fenton MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

428212

Abstract:

Metal/polymer laminates prepared from essentially insoluble anionomeric polymer film layer with catalytic metal, e. g. palladium, exchanged into surface acid groups which can be reduced to provide catalytic metal clusters for catalyzing electroless deposition of metal which is resistant to removal by adhesive tape. Anionomeric polymer films are coated from solutions, emulsions or dispersions of sulfonated or carboxylated polyesters or sulfonated, phosphonated or carboxylated perfluorocarbon polymer, dried and heat treated, e. g. at 120. degree. -180. degree. C. , to render the coating insoluble.

US Patent:

50875108, Feb 11, 1992

Filed:

Mar 22, 1990

Appl. No.:

7/497960

Inventors:

Edward F. Tokas - Creve Coeur MO
George D. Vaughn - Ballwin MO
David L. Taylor - St. Louis MO
Albert W. Morgan - Chesterfield MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

428209

Abstract:

Electrolessly deposited metal holograms comprising a polymeric substrate having a holographic relief-patterned surface and a metal reflective layer electrolessly deposited to conform to and reproduce the holographic relief patterned. Light incident to the metal surface is reflected to provide an holographic reproduction of an holographic image inherent in said relief-patterned polymeric substrate.

US Patent:

51586045, Oct 27, 1992

Filed:

Jul 1, 1991

Appl. No.:

7/724093

Inventors:

Albert W. Morgan - Chesterfield MO
George D. Vaughn - Ballwin MO
Douglas H. Teramura - Creve Coeur MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C23C 1834
C23C 1840

US Classification:

106 123

Abstract:

Viscous aqueous electroless plating solutions comprising ionic depositable metal species such as copper or nickel, metal complexing agent such as EDTA, metal reducing agent such as formaldehyde or hypophosphite and thickener such as xantham gum, silica or carboxymethylcellulose have a viscosity greater than 50 cp, for instance up to 20,000 cp. The viscous solutions are useful for electrolessly depositing metal onto moving or inclined catalytic substrates and as a component of kits for applying electrolessly deposited metal images to such surfaces.

US Patent:

52272230, Jul 13, 1993

Filed:

Jun 7, 1991

Appl. No.:

7/713246

Inventors:

Albert W. Morgan - Chesterfield MO
George D. Vaughn - Ballwin MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

428209

Abstract:

Methods for fabricating two-dimensional imaged metal articles on webs by electroless deposition of metal onto a catalytic pattern rotogravurely printed onto moving webs travelling at linear speeds of up to 500 meters/minute using low viscosity catalytic ink comprising polymer and compound, complex or colloid of a Group 1B or Group 8 metal. Such two-dimensional imaged metal articles comprise areas or fine lines, e. g. less than 100 micrometers wide, which are useful as electrical devices such as circuit connectors, antennas and the like or as mechanical devices such as levers, gears and the like. With modification of the metal component or addition of other materials, such two-dimensional imaged metal articles can be useful a electronic devices such as diodes, resistors, capacitors and the like or as energy conversion devices such as batteries, sensors or fuel cells. The catalytic inks have appropriate rheological properties of viscosity and surface tension that permit non-sagging, non-spreading images to be printed onto a web which can travel vertically into a drying zone.

US Patent:

55173381, May 14, 1996

Filed:

Oct 20, 1992

Appl. No.:

7/963650

Inventors:

George D. Vaughn - Chesterfield MO
Charles R. Graham - St. Peters MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

G02B 532

US Classification:

357 15

Abstract:

Composite mirrors on a substrate comprising a mixture of up to 20 percent of polymer and at least 80 percent of metal clusters, e. g. of gold, palladium or silver, which have a nominal diameter less than 100 nanometers and which are agglomerated in a layer conforming to the surface of the substrate. Composite mirrors are produced by coating a substrate with a solution comprising at least 80 percent solvent, e. g. water and alcohol, and up to 20 percent of a mixture of up to 20 percent polymer, e. g. methylcellulose, and at least 80 percent metal, present as a salt of volatiles-forming anion, e. g. silver lactate or palladium acetate; dry films of polymer and salt are exposed to heat or ultraviolet light to convert the salt to metal clusters. Polymeric mirrors are especially useful for making reflection holograms on polymeric surfaces embossed with a latent holographic image in a relief pattern.

US Patent:

54036496, Apr 4, 1995

Filed:

Jul 13, 1993

Appl. No.:

8/091145

Inventors:

Albert W. Morgan - Chesterfield MO
George D. Vaughn - Ballwin MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

428209

Abstract:

Methods for fabricating two-dimensional imaged metal articles on webs by electroless deposition of metal onto a catalytic pattern rotogravurely printed onto moving webs travelling at linear speeds of up to 500 meters/minute using low viscosity catalytic ink comprising polymer and compound, complex or colloid of a Group 1B or Group 8 metal. Such two-dimensional imaged metal articles comprise areas or fine lines, e. g. less than 100 micrometers wide, which are useful as electrical devices such as circuit connectors, antennas and the like or as mechanical devices such as levers, gears and the like. With modification of the metal component or addition of other materials, such two-dimensional imaged metal articles can be useful a electronic devices such as diodes, resistors, capacitors and the like or as energy conversion devices such as batteries, sensors or fuel cells. The catalytic inks have appropriate rheological properties of viscosity and surface tension that permit non-sagging, non-spreading images to be printed onto a web which can travel vertically into a drying zone.

US Patent:

50827340, Jan 21, 1992

Filed:

Nov 13, 1990

Appl. No.:

7/609718

Inventors:

George D. Vaughn - Ballwin MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

4284111

Abstract:

Metal coated articles where the metal is electrolessly deposited onto catalytic films prepared by thermally activating catalytically inert films formed from an aqueous solution comprising polymer, e. g. cellulosic, vinyl alcohol or oxyolefin polymers, and catalytic metal of Group 8, e. g. palladium. Copper electrolessly deposited on activated films exhibits high ductility similar to electrolytic copper, e. g. at least about 8 percent ductility.

US Patent:

52758613, Jan 4, 1994

Filed:

Jan 9, 1992

Appl. No.:

7/820450

Inventors:

George D. Vaughn - Ballwin MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B32B 900

US Classification:

428 76

Abstract:

Electromagnetic radiation shielding textile material comprising metal-coated fabric adapted to be applied with overlapping seams at least 4 cm wide to provide at least 80 dB of far-field shielding against electromagnetic radiation between 0. 1 and 10 gigahertz. Fabric, e. g. non-woven nylon fabric, coated with at least one layer of electrolessly-deposited metal, e. g. at least 15 g/m. sup. 2 copper, is useful as backing for wallpaper which can provide effective far-field shielding of electromagnetic radiation.