Brian T Devlin

US Patent:

6984693, Jan 10, 2006

Filed:

Apr 30, 2004

Appl. No.:

10/837383

Inventors:

Laura Ann Lewin - Greenville DE, US
Brian Patrick Devlin - Berwyn PA, US
James Lamonte Adams - Glenside PA, US

Assignee:

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

International Classification:

C08L 75/04

US Classification:

525125, 525131, 528 80, 4284231, 4284258, 4273855

Abstract:

A two-stage cure coating composition of a binder and a crosslinking component; the binder comprises and acrylic polymer having a weight average molecular weight of 3,000 to 50,000 and hydroxyl moieties in the range of 7. 0 to 40. 0 weight; wherein at least 40. 0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate; the crosslinking component comprises an organic polyisocyanate; and the first stage curing of a finish of the composition forms a water spot free finish within 90 minutes of application and the composition has a pot life of less than a 2 second rise in Zahn cup viscosity in 150 minutes; and the invention also is directed to a method of producing a finish on a substrate utilizing the coating composition.

US Patent:

20060051594, Mar 9, 2006

Filed:

Oct 12, 2005

Appl. No.:

11/248802

Inventors:

Laura Lewin - Greenville DE, US
Brian Devlin - Berwyn PA, US
Donald Paquet - Troy MI, US
James Adams - Glenside PA, US

International Classification:

C07C 69/52
B32B 27/40

US Classification:

428423100, 560190000

Abstract:

An acrylic oligomer useful in a two stage curing coating composition having a weight average molecular weight of 100 to 3000, a polydispersity of 1.01 to 1.7 and one or more reactive functionalities reactive with isocyanate groups and having 7.0 to 40.0 weight percent, based on the weight of the acrylic oligomer, of hydroxyl moieties wherein at least 40.0 to 70.0 weight percent of the hydroxyl moieties are provided by hydroxy butyl acrylate and the remaining hydroxyl moieties are provided by fast reacting hydroxyl constituents of hydroxy ethyl acrylate, hydroxy ethyl methacrylate or any mixtures thereof and by slow reacting hydroxyl constituents of secondary hydroxyl containing hydroxy propyl acrylate and secondary hydroxyl containing hydroxy propyl methacrylate and any mixtures thereof.

US Patent:

52906337, Mar 1, 1994

Filed:

Jun 7, 1993

Appl. No.:

8/072366

Inventors:

Brian P. Devlin - Audubon PA
Joseph A. Antonelli - Riverton NJ
Christopher Scopazzi - Wilmington DE

Assignee:

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

International Classification:

C08L 5100
C08L 7500

US Classification:

4284231

Abstract:

A coating composition comprising a hydroxy functional graft copolymer characterized by macromoners attached at a terminal point to a polymeric backbone. The composition further comprises a polyisocyanate curing agent. Such compositions provide an improved balance of pot life and cure properties.