David G Bramer

US Patent:

7173071, Feb 6, 2007

Filed:

May 4, 2004

Appl. No.:

10/838473

Inventors:

Joseph Suhadolnik - Yorktown Heights NY, US
Mervin Wood - Mobile AL, US
Ramanathan Ravichandran - Suffern NY, US
Walter Renz - Brookfield CT, US
Andrea Roberts - Wingdale NY, US
Nancy Cliff - Ringwood NJ, US
Eugene Sitzman - Hartsdale NY, US
David Bramer - Putnam Valley NY, US

Assignee:

Ciba Specialty Chemicals Corporation - Tarrytown NY

International Classification:

C08J 3/28
C08K 5/3475
C08F 2/50
C09D 4/02
C09D 175/16

US Classification:

522 18, 522 75, 522 96, 427519

Abstract:

Photo-curable coating formulations which comprise a durable and/or red-shifted reactable hydroxyphenylbenzotriazole ultraviolet light absorber (UVA) are effectively photocured employing a combination of α-hydroxy ketone and bisacylphosphine oxide photoinitiators. The reactable UVA's are reacted into the coating upon curing. The combination of the photoinitiators bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 1-hydroxycyclohexylphenylketone is especially effective for this purpose.

US Patent:

20030139499, Jul 24, 2003

Filed:

Nov 22, 2002

Appl. No.:

10/302110

Inventors:

Joseph Suhadolnik - Yorktown Heights NY, US
Mervin Wood - Poughquag NY, US
Ramanathan Ravichandran - Suffern NY, US
Walter Renz - Brookfield CT, US
Andrea Smith - Wingdale NY, US
Nancy Cliff - Ringwood NJ, US
Eugene Sitzmann - Hartsdale NY, US
David Bramer - Putnam Valley NY, US

International Classification:

C08K005/34
C08G002/00

US Classification:

524/091000, 522/007000

Abstract:

Photo-cureable coating formulations which comprise a durable and/or red-shifted hydroxyphenylbenzotriazole ultraviolet light absorber (UVA) are effectively photocured employing a combination of -hydroxy ketone and bisacylphosphine oxide photoinitiators. The combination of the photoinitiators bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 1-hydroxycyclohexylphenylketone is especially effective for this purpose.

US Patent:

20050123691, Jun 9, 2005

Filed:

Jan 13, 2005

Appl. No.:

11/035162

Inventors:

Joseph Suhadolnik - Yorktown Heights NY, US
Mervin Wood - Poughquag NY, US
Ramanathan Ravichandran - Suffern NY, US
Walter Renz - Brookfield CT, US
Andrea Smith - Wingdale NY, US
Nancy Cliff - Ringwood NJ, US
Eugene Sitzmann - Hartsdale NY, US
David Bramer - Putnam Valley NY, US

International Classification:

B05D003/00

US Classification:

427532000

Abstract:

Photo-cureable coating formulations which comprise a durable and/or red-shifted hydroxyphenylbenzotriazole ultraviolet light absorber (UVA) are effectively photocured employing a combination of α-hydroxy ketone and bisacylphosphine oxide photoinitiators. The combination of the photoinitiators bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 1-hydroxycyclohexylphenylketone is especially effective for this purpose.

US Patent:

20050165141, Jul 28, 2005

Filed:

Jan 21, 2005

Appl. No.:

11/040716

Inventors:

Jean-Pierre Wolf - Maisprach, CH
Stephen Ilg - Giebenach, CH
Jean-Luc Birbaum - Binningen, CH
Eugene Sitzman - Hartsdale NY, US
David Bramer - Putnam Valley NY, US
Greg Losapio - Mohegan Lake NY, US

International Classification:

C08K005/34
C08K005/49

US Classification:

524099000, 524115000

Abstract:

Disclosed are cationic photocurable compositions with improved shelf life stability. The thermally stable compositions comprise at least one cationically polymerizable compound, for example an epoxy compound, at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers. Also disclosed is a cationic photoinitiator composition comprising at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers.

US Patent:

20070225395, Sep 27, 2007

Filed:

May 14, 2007

Appl. No.:

11/803274

Inventors:

Jean-Pierre Wolf - Maisprach, CH
Stephen Ilg - Giebenach, CH
Jean-Luc Birbaum - Binningen, CH
Eugene Sitzman - Hartsdale NY, US
David Bramer - Putnam Valley NY, US
Greg Losapio - Mohegan Lake NY, US

International Classification:

C08F 2/46

US Classification:

522036000, 522067000

Abstract:

Disclosed are cationic photocurable compositions with improved shelf life stability. The thermally stable compositions comprise at least one cationically polymerizable compound, for example an epoxy compound, at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers. Also disclosed is a cationic photoinitiator composition comprising at least one onium salt photoinitiator and at least one compound selected from the group consisting of the organic phosphorus stabilizers and the hindered nitroxyl stabilizers.