Robert H Matheson

US Patent:

7740911, Jun 22, 2010

Filed:

Oct 5, 2006

Appl. No.:

11/543621

Inventors:

Isidor Hazan - Miami Beach FL, US
Jeffery W. Johnson - Rochester MI, US
Robert R. Matheson - West Bloomfield MI, US
Delson J. Trindade - Rochester Hills MI, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C09D 3/02

US Classification:

4273855, 4273722, 427402

Abstract:

This invention relates to a method for forming a multi-layer coating, comprising sequentially applying a layer of primer coating composition, a layer of base coat composition, and a layer of clear coat composition on an automotive substrate in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer surfacer comprises a film forming binder, a volatile organic liquid carrier, and pigment(s); and the binder contains about (a) 40 to 95% by weight of a caprolactone-modified highly branched acrylic polymer having a hydroxyl and/or carboxyl monomer content, all or part of which has been reacted with caprolactone, of about 1 to 65% by weight and a weight average molecular weight of about 10,000 to 150,000; and (b) 5 to 60% by weight of an aminoplast resin crosslinking agent. The composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting cured multi-layered coating has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.

US Patent:

7867569, Jan 11, 2011

Filed:

Oct 5, 2006

Appl. No.:

11/543663

Inventors:

Isidor Hazan - Miami Beach FL, US
Jeffery W. Johnson - Rochester MI, US
Robert R. Matheson - West Bloomfield MI, US
Delson Jayme Trindade - Rochester Hills MI, US
Peter William Uhlianuk - Romeo MI, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

B05D 3/02

US Classification:

4273855, 4273722, 427402

Abstract:

This invention relates to a method for forming a multi-layer coating on a vehicle body, comprised of applying primer coating, base coating, and clear coat layers in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer layer comprises a film-forming binder comprising two acrylic polymers, the first being a caprolactone-modified branched acrylic polymer and the second being a caprolactone-modified linear acrylic polymer; and a crosslinking agent selected from aminoplast resin, blocked polyisocyanates, or mixtures thereof, wherein the composition is, essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.

US Patent:

8062761, Nov 22, 2011

Filed:

Dec 3, 2010

Appl. No.:

12/959423

Inventors:

Isidor Hazan - Miami Beach FL, US
Jeffery W. Johnson - Rochester MI, US
Robert R. Matheson - West Bloomfield MI, US
Delson J. Trindade - Rochester Hills MI, US
Peter W. Uhlianuk - Romeo MI, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

B05D 3/02

US Classification:

428520, 4284747, 525408

Abstract:

This invention relates to a method for forming a multi-layer coating on a vehicle body, comprised of applying primer coating, base coating, and clear coat layers in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer layer comprises a film-forming binder comprising two acrylic polymers, the first being a caprolactone-modified branched acrylic polymer and the second being a caprolactone-modified linear acrylic polymer; and a crosslinking agent selected from aminoplast resin, blocked polyisocyanates, or mixtures thereof, wherein the composition is, essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.

US Patent:

20070190312, Aug 16, 2007

Filed:

Oct 5, 2006

Appl. No.:

11/543691

Inventors:

Isidor Hazan - Miami Beach FL, US
Jeffery Johnson - Rochester MI, US
Robert Matheson - West Bloomfield MI, US
Delson Trindade - Rochester Hills MI, US

International Classification:

B32B 5/16
B05D 3/02
B05D 7/00
B32B 27/30
C09D 5/02

US Classification:

428323000, 524501000, 427402000, 427372200, 428520000, 428522000

Abstract:

This invention relates to a method for forming a multi-layer coating, by sequentially applying a primer surfacer, a base coat composition, and a clear coat composition on an automotive substrate in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer surfacer comprises: a film forming binder, a volatile organic liquid carrier, and pigment(s); and the binder contains about: 40 to 95% by weight of a highly branched acrylic polymer having a hydroxyl, carboxyl and/or other crosslinkable functional group monomer content of about 1 to 65%; and 5 to 60% by weight of an aminoplast resin crosslinking agent. The composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.