Bruce C Monroe

US Patent:

45657696, Jan 21, 1986

Filed:

Nov 21, 1984

Appl. No.:

6/673924

Inventors:

Thomas E. Dueber - Wilmington DE
Bruce M. Monroe - Wilmington DE

Assignee:

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

International Classification:

G03C 169

US Classification:

430281

Abstract:

Photopolymerizable composition consisting essentially of (A) at least one ethylenically unsaturated monomeric compound, (B) at least one 2,4,5-triarylimidazolyl dimer, (C) sensitizing amount of at least one polymeric sensitizer, weight average molecular weight 10,000 to 300,000, which is the reaction product of (1) a reactive photosensitizer and (2) a reactive polymer as defined herein, and (D) optionally an organic polymeric binder. The compositions are useful in photoresists, chemical milling, toning films and printing plates.

US Patent:

52601498, Nov 9, 1993

Filed:

Oct 16, 1991

Appl. No.:

7/777599

Inventors:

Bruce M. Monroe - Wilmington DE
William K. Smothers - Hockessin DE

Assignee:

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

International Classification:

G03H 104

US Classification:

430 1

Abstract:

Solid photopolymerizable compositions and photosensitive elements are provided that are useful in preparing optical elements, and especially holograms. The composition contains a polymeric binder, a liquid ethylenically unsaturated monomer, and a photoinitiator system. Typical compositions have a refractive index modulation of at least 0. 005 when measured per the specified test.

US Patent:

49872303, Jan 22, 1991

Filed:

Dec 8, 1989

Appl. No.:

7/447721

Inventors:

Bruce M. Monroe - Wilmington DE

Assignee:

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

International Classification:

C07D45102

US Classification:

546 94

Abstract:

A new class of sensitizers for photopolymerizable compositions is disclosed derived from cyclic ketones and tricyclic aminoaldehydes. A preferred compound is cyclopentanone, 2,5-bis[2,3,6,7-tetrahydro-1H,5H-benzo[i,j]quinolizin-9-methylene] ##STR1##.

US Patent:

50988034, Mar 24, 1992

Filed:

Feb 14, 1990

Appl. No.:

7/480352

Inventors:

Bruce M. Monroe - Wilmington DE
William K. Smothers - Hockessin DE

Assignee:

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

International Classification:

G02B 532

US Classification:

430 1

Abstract:

Solid photopolymerizable compositions and photosensitive elements are provided that are useful in preparing optical elements, and especially holograms. The compositions contains a polymeric binder, a liquid ethylenically unsaturated monomer, and a photoinitiator system. Typical compositions have a refractive index modulation of at least 0. 005 when measured per the specified test.

US Patent:

49421123, Jul 17, 1990

Filed:

Jan 15, 1988

Appl. No.:

7/144355

Inventors:

Bruce M. Monroe - Wilmington DE
William K. Smothers - Hockessin DE

Assignee:

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

International Classification:

G03C 170
G03C 168

US Classification:

430282

Abstract:

Solid photopolymerizable compositions and photosensitive elements are provided that are useful in preparing optical elements, and especially holograms. The composition contains a polymeric binder, a liquid ethylenically unsaturated monomer, and a photoinitiator system. Typical compositions have a refractive index modulation of at least 0. 005 when measured per the specified test.

US Patent:

50967908, Mar 17, 1992

Filed:

Jul 16, 1990

Appl. No.:

7/552550

Inventors:

Bruce M. Monroe - Wilmington DE

Assignee:

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

International Classification:

G03H 100
G03F 7020

US Classification:

430 1

Abstract:

A new class of sensitizers for photopolymerizable compositions is disclosed derived from cyclic ketones and tricyclic aminoaldehydes. A preferred compound is cyclopentanone, 2. 5-bis[(2,3,6,7-tetrahydro-1H, 5H-benzo [i,j]quinolizin-9-yl)methylene]- ##STR1##.