Title:
STABILIZED p-PHENYLENEDIAMINE-TYPE PHOTOGRAPHIC COLOR DEVELOPERS IN FREE BASE FORM
Document Type and Number:
WIPO Patent Application WO2002033486
Kind Code:
A3
Abstract:
A stabilized p-phenylenediamine color developer solution having about 10 to 40 weight percent of a p-phenylenediamine free base color developer, about 40 to 70 weight percent of a hydroxy-containing organic solvent for the p-phenylenediamine free base color developer, and about 1 to 40 weight percent of a preservative for the p-phenylenediamine free base color developer,wherein the weight percentages are based on the total weight of the stabilized solution. Another aspect are processes for making stabilized p-phenylenediamine color developer solutions. Another embodiment is a p-phenylenediamine free base color developer, and from about 1 to 50 weight percent of a preservative for the p-phenylenediamine free base color developer, wherein the weight percentages are based on the total weight of the composition. Another aspect is a process for making the stabilized solid p-phenylendiamine color developer.
Inventors:
HUDNALL PHILLIP MONTGOMERY
Application Number:
PCT/US2001/049868
Publication Date:
October 31, 2002
Filing Date:
October 19, 2001
Export Citation:
Assignee:
EASTMAN CHEM CO (US)
International Classes:
G03C5/305; G03C7/407; G03C7/413; G03C5/26; (IPC1-7): G03C7/413; G03C5/26
Foreign References:
| US5914221A | 1999-06-22 | |||
| EP0980024A2 | 2000-02-16 | |||
| US6017687A | 2000-01-25 | |||
| EP1156365A1 | 2001-11-21 |
Download PDF:
Previous Patent: IMPROVED CRYSTAL MOUNTING IN SOLID STATE LASER SYSTEMS
Next Patent: COMPOSITIONS FOR MICROLITHOGRAPHY
Next Patent: COMPOSITIONS FOR MICROLITHOGRAPHY