US2012248389A1PendingUtilityA1

Stable, water-soluble near infrared dyes

49
Individually held — no corporate assignee on recordPriority: Mar 19, 2008Filed: Jun 15, 2012Published: Oct 4, 2012
Est. expiryMar 19, 2028(~1.7 yrs left)· nominal 20-yr term from priority
Inventors:Murray S. Cohen
C09B 67/0013C09B 67/009C07C 229/18
49
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Claims

Abstract

The synthesis of stable, water-soluble tris and tetrakis aminium dyes. More particularly, carboxylic-acid modified tris and tetrakis dye intermediates, as well as salts and near-infrared dyes formed therefrom, as well as compositions including the dyes.

Claims

exact text as granted — not AI-modified
1 - 10 . (canceled) 
     
     
         11 . A compound of the formula: 
       
         
           
           
               
               
           
         
         where R is dimethylene or where R has the formula R 3 CH 2 CH 2 — and R 3  is methylene or a C 2  to C 10  polymethylene group of the formula —(CH 2 ) n — where 2≦n≦10. 
       
     
     
         12 . A compound of  claim 11  which has the formula: 
       
         
           
           
               
               
           
         
       
     
     
         13 . A salt produced from the compound of  claim 11 , the salt having the formula: 
       
         
           
           
               
               
           
         
         wherein R 1 ═Na + , K + , NH 4   + , (CH 3 ) 4 N + , (CH 3 ) 3 NH + , (R 2 ) 3 NH +  or R 2 NH 4   + , and R 2 ═CH 3 (CH 2 ) n , wherein n=2 to 10. 
       
     
     
         14 . A monovalent dye salt produced from the salt of  claim 13 , the dye having the formula: 
       
         
           
           
               
               
           
         
         wherein X═NO 3   − , SbF 6   − , PF 6   − , BF 4   − , I − , Cl − , Br −  or CH 3 SO 3   − . 
       
     
     
         15 . A divalent dye salt produced from the salt of  claim 13 , the dye having the formula: 
       
         
           
           
               
               
           
         
         wherein X═NO 3   − , SbF 6   − , PF 6   − , BF 4   − , I − , Cl − , Br −  or CH 3 SO 3   − . 
       
     
     
         16 - 23 . (canceled) 
     
     
         24 . A water-soluble polymeric composition comprising a blend of the dye of  claim 14  and a water-soluble polymer. 
     
     
         25 . An aqueous composition comprising the dye of  claim 14 , a water-soluble polymer and water. 
     
     
         26 . A water-soluble polymeric composition comprising a blend of the dye of  claim 15  and a water-soluble polymer. 
     
     
         27 . An aqueous composition comprising the dye of  claim 15 , a water-soluble polymer and water.

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