Fusible conductive ink for use in manufacturing microfluidic analytical systems

• US 7,402,616 B2
• Filed: 09/30/2004
• Issued: 07/22/2008
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson), LifeScan IP Holdings, LLC
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: McNeilage, Alan, Maclennan, Margaret, Rodgers, James Iain, Moffat, James
• Primary Examiner(s): McClendon; Sanza L
• Application Number:
  US10/957,470
• Publication Number:
  US 20060074143A1
• Time in Patent Office: 1,391 Days
• Field of Search: 523/160, 523/161, 523/200, 523/205, 524/495, 524/496, 524/400, 524/414, 524/424, 524/404
• US Class Current: 523/160
• CPC Class Codes: C09D 11/102 containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds

Abstract

A fusible conductive ink for use in manufacturing microfluidic analytical systems includes micronised powder containing platinum and carbon, poly(bisphenol A-co-epichlorohydrin)-glycidyl end capped polymer, and a solvent. In addition, the ratio of micronised powder to poly(bisphenol A-co-epichlorohydrin)-glycidyl end capped polymer is in the range of 3:1 to 1:3. The fusible conductive inks can be employed in the manufacturing of microfluidic systems to form electrodes, electrically conductive traces and/or electrically conductive contact pads.

Claims

1. A fusible conductive ink for use in manufacturing microfluidic analytical system, the fusible conductive ink consisting essentially of:

micronised powder containing platinum and carbon;

poly(bisphenol A-co-epichlorohydrin)-glycidyl end capped polymer; and

a solvent,

wherein the ratio of micronised powder to poly(bisphenol A-co-epichlorohydrin)-glycidyl end capped polymer is in the range of 3;

1 to 1;

3.

2. The fusible conductive ink of claim 1, wherein the micronised powder contains platinum and carbon in a mass ratio of approximately 1:

9.

3. The fusible conductive ink of claim 1, wherein the solvent is Methyl Carbitol (Diethylene Glycol Monomethyl Ether).

4. The fusible conductive ink of claim 1, wherein the fusible conductive ink has a mass percent composition as follows:

18.5% micronised powder containing platinum and carbon in a 1;

9 mass ratio;

19.0% poly (bisphenol A-co-epichlorohydrin)-glycidyl end capped polymer; and

62.5% Methyl Carbitol (Diethylene Glycol Monomethyl Ether) solvent.