US2004072926A1PendingUtilityA1

Coating composition for inkjet printing

37
Priority: Oct 9, 2002Filed: Oct 9, 2002Published: Apr 15, 2004
Est. expiryOct 9, 2022(expired)· nominal 20-yr term from priority
Inventors:Robert GibbisonAndrew MintSarah Orton
B41M 5/5218B41M 5/5254B41M 5/52
37
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

An inkjet-receptive coating composition for efficacious inkjet printing which is a synergistic composition of swellable, water-insoluble polyvinylpyrrolidone particles and microporous (fumed) silica particles.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An inkjet-receptive coating composition for efficacious, water- resistant inkjet printing comprising: 
 (a) (i) swellable, water-insoluble polyvinylpyrrolidone (PVPP) particles and (ii) microporous silica, and (b) a binder for said particles.    
     
     
         2 . A composition according to  claim 1  wherein, by weight, (a) is 2-5% and (b) is 5-15%, of the composition.  
     
     
         3 . A composition according to  claim 1  wherein (b) is a polymer.  
     
     
         4 . A composition according to  claim 3  wherein (b) is polyvinyl alcohol.  
     
     
         5 . A composition according to  claim 1  which is a microporous composition.  
     
     
         6 . A composition according to  claim 1  wherein (ii) is fumed silica.  
     
     
         7 . A composition according to  claim 1  including (c) water.  
     
     
         8 . A composition according to  claim 7  at a solids content of 18%.  
     
     
         9 . A composition according to  claim 1  wherein the weight ratio of (i) to (ii) is 10-70:30-90.  
     
     
         10 . A composition according to  claim 9  wherein said weight ratio is 30-50:50-70.

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