content_image/931181.jpg content_image/931182.jpg content_image/931154.jpg content_image/931178.jpg content_image/931177.jpg content_image/931173.jpg
# c12) United States Patent 

# Shukla et al. 

# (54) ARTICLES HAVING REDUCIBLE SILVER ION COMPLEXES OR SILVER METAL 

(71) Applicant: Eastman Kodak Company, Rochester, NY (US) 

(72) Inventors: Deepak Shukla, Webster, NY (US); Mark R. Mis, Rush, NY (US); Thomas Robert Welter, Webster, NY (US); Kevin P. Klubek, West Henrietta, NY (US); Kevin M. Donovan, Bergen, NY (US) 

(73) Assignee: EASTMAN KODAK COMPANY, Rochester, NY (US) 

( *) Notice: Subject to any disclaimer, the term ofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 322 days. This patent is subject to a terminal dis› claimer. 

(21) Appl. No.: 15/231,823 

(22) Filed: Aug. 9, 2016 

## (65) Prior Publication Data 

US 2018/0049320 Al Feb. 15, 2018 

(51) Int. Cl. 

<img src='content_image/931181.jpg'>

(52) U.S. Cl. CPC ........... H0SK 11092 (2013.01); H05K 3/1275 (2013.01); H05K 2203/0514 (2013.01); H05K 220311157 (2013.01) 

(58) Field of Classification Search None See application file for complete search history. 

(Continued) 

<img src='content_image/931182.jpg'>

<img src='content_image/931154.jpg'>

# (IO) Patent No.: US 10,356,899 B2 

# (45) Date of Patent: *Jul. 16, 2019 

## (56) References Cited 

<img src='content_image/931178.jpg'>

## FOREIGN PATENT DOCUMENTS 

<img src='content_image/931177.jpg'>

Koen Binnemans et al., "Structure and Mesomorphism of Silver Alkanoates," Chem. Mater. 2004, 16. 2021-2027. 

Primary Examiner - John J Figueroa (74) Attorney, Agent, or Firm - J. Lanny Tucker 

## (57) ABSTRACT 

A precursor article has a substrate and a photosensitive thin film or a photosensitive thin film pattern on a supporting side. The photosensitive thin film and each photosensitive thin film patterns comprises a non-hydroxylic-solvent soluble silver complex that is represented by the following formula (I): 

<img src='content_image/931173.jpg'>

wherein L represents an a-oxy carboxylate; P represents a 5- or 6-membered N-heteroaromatic compound; a is 1 or 2; b is 1 or 2; and c is 1, 2, 3, or 4, provided that when a is 1, b is 1, and when a is 2, bis 2. A photosensitizer that can either reduce the reducible silver ion or oxidize the a-oxy car› boxylate having a reduction potential can also be present. Such precursor articles can be irradiated with UV-visible radiation to reduce the silver ions to provide electrically› conductive metallic silver in thin films or thin film patterns in product articles or devices. 

US010356899B2 

## U.S. PATENT DOCUMENTS 

(Continued) 

## OTHER PUBLICATIONS 

(Continued) 

## 17 Claims, 4 Drawing Sheets 

